@@QuintBUILDs Thats the problem with micro wind. A LOT of the products are truly junk. Especially at that 400 watt scale. That being said I have a 1.5 kw Chinese turbine that I reliably get over 1kw out of anywhere above 22mph. Cost me $1200 but it was well worth it.
Hey mate, I did my honours project on wind tunnel testing of these small turbines in an automotive wind tunnel taking wake measurements of them. Your explanation of the concepts is amazing. Early in my testing I came across the same automatic electrical braking at a particular voltage, which is proportionate to an upper limit of rotational speed to protect the turbine. In my testing I bypassed this electrical braking and my turbine performed significantly better as it wouldn't continuously brake when it reached a high voltage. It can reach that voltage limit quite easily if the resistance supplied is high ohm (low physical resistance on turbine). This will produce a very low power but be sufficient voltage to trip the brake.
That sounds like an awesome project Thomas! Thanks for the insight on the resistance. Keep in touch as the project progresses. I wish I could go back in time and check out your wind tunnel setup. FYI, I bought a 7200w alternator for part 3. It's HUGE! Going to really test the formulas now. I'm going to connect it directly to heating elements rather than messing with the inverter/controller too. I've got big plans for parts 4 and 5 assuming it works. :)
Awesome video! But shouldn't you be wearing short sleeves while working the lathe? Lots of accidents happen because the long sleeves get pulled into the spindle. Best regards! =)
A hammer will kill you if you are stupid enough. Any safety tip will fail if you are not aware of what's going on around you. Safety rules are mostly elimination of potential risk factors. Loose sleeves are definately one of them but it all depends on what you are doing and how experienced you are with various tools. You should put your seatbelts on when driving but it doesn't mean that you gonna die if you don't.
@@ardvark84 It doesn't. But if such a simple precaution helps lower the odds, why not put it in practice? As you said, people die from the silliest, most harmless things, so why take the extra risk?
i like the channel and get the coat is part of your brand but please for your kids if that coat isnt a tear away wear short sleeves at the lathe when you turned to talk to the camera you where moving your hands as you speak got uncomfortably close to the spindle
A fun video thankyou. I successfully use a wind turbine to power my off-grid house. Credible designs that work are actually quite sophisticated in their operation. I use a Berget XL1. At full power it produces about 42A at 25V. This output depends on the charging load and is reached at a windspeed of about 35kmh. It has worked very well for over 12 years The controller in turbines like the Bergey is a digital controller with some similarities to a solar MPPT controller. It extracts energy from the rotational inertia of the blade disc in a way to maintain optimal rpm with respect to given wind speed and the load. It does this by extracting the energy in short pulses (in the Bergey about 30 pulses per second). As the wind speed increases and depending on the load, these pulses lengthen to keep rpm in a safe and efficient operating range. At very high rpm the controller starts to short the windings (in the Bergey case into a .2 Ohm resistor) to prevent turbine overspeed. To have all this work in a balanced way it is very important to have a big battery to stabilise load voltage as this is one of the parameters the controller needs to reference many times per second. For the turbine to work at optimal efficiency against lead acid batteries, ideally the battery in Ampere Hours needs to be ten times the maximum rated current of the turbine. In the example of my Bergey that means the battery needs to be 420AH. If you install small batteries the battery voltage jumps around too much causing the controller to misfunction. In my view in the case of the small 12V 500W turbines you should have a battery of at least 100AH, and preferably much higher. You can get analogue regulators for wind turbines, these are more tolerant of fluctuating voltages but they are far less efficient because they don't optimise rpm and don't have overspeed braking. Finally the cheap turbines have flexible blades that bend (furl) to dump excess disc pressure in overload situations where rpm cannot be controlled by braking. These are a suboptimal design prone to blade tip stall and flutter. For best efficiency the blades need to be relatively stiff with furling either by turning the blade disc out of wind (the Bergey method) or by a variable pitch mechanism that fully feathers the blades to stop them rotating.
Passive induction mechanical intakes could solve most of the issues that plague wind power generation. But they need to be downsized to homeowner sizes to be viable, imho. You have a nice system.
Yeah and the battery thing is so true, like from your calculations even at full power it produces only 1050 W and just one toaster would probably take 1200 or something
This is a great video. I just happened to watch the ones related to rainfall generation. I wish I really had half your energy to build and run all these experiments. One thing worth commenting is that the wind turbine setup with a large car grille right behind the turbine may be blocking or deviating a portion of the wind energy from the rotor blades. Ideally, the wind turbine should be located on the roof (at a certain height) to better allow the wind flow directly on the turbine. I know this is very difficult. Just to point out where there could be a portion of the under performance observed with current setup. Keep it up. Thanks
Thicker wires in the motor can make a big difference lowering internal resistance through a long wire composing a coil, while thinner but short wires in controller might not make a huge difference. 21:09
A key issue with ALTERNATORs is that the faster you spin them, the higher the frequency of the AC flowing in the coils. At 1500 RPM with a 12 pole rotor, the frequency is up to 150 Hz. And that means the synchronous reactance of the windings is getting higher as well. In AC generators, the synchronous reactance is much more limiting than the simple DC resistance. So even if you spin them at a few thousand RPM, there's still a limit to how much current you can get out.
I actually had this same idea 20 years ago, but was too involved in other projects. My thought on this is I always thought it would work. The best application I can think of for this would be RVs and travel trailers that would have a battery bank for storage of the electricity. It would allow you to have electricity much longer in remote locations, and combined with roof mnted solar panels, would be a much longer lasting supply than the panels alone, which is what we see today. Id up the normal 2 rv batteries to at least 6-8. Add those watt-hours up and you'll see its quite a bit. Add an auto bypass to that and when the batteries reach charge, the current from the wind gen can be used to heat the water tank so you have more hot water without using propane. Cool video, Sonny T
Awesome job, you're like a less known Applied Science. Your kid is awesome as well. I had my doubts he'd understand the variac tuning situation, but it sounds like he completely had it down.
One issue I can find here is with the choice of inverter. I noticed you're using a modified sine wave inverter. Those are cheap, easy to find, and only about 80% efficient. Also they can kill motors and have an enormous amount of harmonics that can damage electronics. I'd recommend trying a good pure sine wave inverter. Those are about 98% efficient and usually have fewer harmonics than even grid power.
After many hours of watching CGI videos of wind turbine concepts, hopeful NEWS reports, and home built wind toys, here's the real deal. Well done, you and your son!
Fantastic, love the whole approach to the subject. Those "cheap" wind turbines sold on Amazon are mostly overrated overpriced junk. The real marine ones, for small vessels, cost well over 1000$, both in HAWT or Gorlov configuration and sometimes those too have overrated specs for marketing purposes. Looking forward to the next video.
Interestingly 1000 Watt car dynamo's cost slightly over 100 euro's, even less from the car butcher. They run at high speeds, but they charge batteries at 1800 car rpm.
@@albertvanderhorst4160 Do you mean an alternator? Never seen a 1000W alternator, usually they are rated in V for electric potential, not in W for power. Do you have any examples?
@@gafrers 12 V 90 Ampere is about 1000 Watts in my book. I have such an alternator in my Mondeo 2.0. I can buy a used one for 35 euro's. Obviously 90 A is at 6000 rpm times the transmission gain.
that "strobe effect" at 29:07 is called rolling shutter. Its where the thing spinning in front of the light sensor in the camera matches (or closely matches) the shutter speed of the camera. i believe corridor digital (youtube channel, check them out) did a video on this in an airplane a couple years back
Inspiring video which has been done a lot of times by others, some people build cars around the turbines lol. This shows us that the idea is brilliant but the results are still not very promising. It also shows me that there must be another way to make use of the wind on your car. My idea is that we have to use the wind AROUND the car! Using the front wind and using the draft behind a car to trick the Betz limit theorie. It resulted into a prototype that works on these principles. A so called Push/Pull generator which will spin on a very high speed going up to a couple of thousand RPM and being reduced by a gearbox if the speed is to high for a normal wind generator. Maybe a car generator can do this job because they can go up to 10.000 RPM and higher. This Push/Pull generator has the ability to go up in speed to that circumstances of a normal car generator and can produce the same amount of power this car generator can produce. It should be around 12 Volts and 25 to 30 Amps loading power to charge the battery on a car. I think this idea works way better then most of the wind generators on the market right now, but it's made for the use on cars only. I am working on a type that can be used in open field or at your house. Same theorie but a little different then my Push/Pull generator.
Takes airbag out of passenger side, adds metal plate for increased head cushioning, at least he is wearing safety glasses! Haha, great video, I enjoyed every bit.
Cool project, but I wanna know more about that Bronco! Noticed it's a 70s from the front end, then did a triple take when I saw the dash. Super neat! Did you swap anything else like power train??
Omg, this video is what I exactly needed just right now because I am building a wind turbine project for my channel also and I run into problems how long turbine blades have to be! REALLY GREAT WORK!!!!
Yet another brilliant video. Just as the excitement builds you cut it off... SO MEAN!!! Also, love that your son is so involved, future world-class engineer in the making there.
The PWM "inverter" is probably a lot of the issue. Buy a MPPT inverter since it will always analyze the power and try to pull more or less amps to increase the power
Even though me being an engineer (CS) I find it hard to understand some of the calculations, the passion you have while trying out different solutions keeps me hooked. sharing your content with my friends.
So interesting seeing the the fact checking of what the manufacturer said the capability was versus reality, I'm excited to see how you engineer it to actually work
Yeah i forget just now the two types of sensors in cameras that produce two different effects. There are a bunch of videos online showing how they differ. Okay I just googled it, CMOS and CCD. I could nerd out on that all day...
There was a guy in St Pete FL that I used to see all thw time at home depot that did this same thing. I never knew what he was charging but it was interesting to see. He had his bn on the back of the van and it was over the top of it on a movable arm he could raise and lower.
Thanks! Some of it is sketched by hand, the rest is drawn in Adobe elements and imported into the timeline in Adobe premiere (png format I think, no background comes with it). I wish it was just a tiny bit more capable in the 3D motion but am able to make it work. I'm glad you like it, it's one of my favorite parts of the editing process. 👍
@@QuintBUILDs I've become really good with PowerPoint because of a guy on UA-cam called OneSkill. It might help you a little, but your work is exceptional as is. I just like the new animation tools in PowerPoint that they've created.
Dankie/Merci/ Thx Clint and Grant 4 this educational video. It's great and love it. It also shows not to go with every thing the maker says. A max of 200W out of a windmill of 400 W (500W)!
Blade pitch plays a huge role in efficiency so keep that in mind and controller part of it.. You can use simple rectifier ckt. Connected to MPPT change controller and see what it can do....👍
Little thing I suggest you should look at: The Reynolds number for the airfoils at the tip speeds. Many of the "college" based tools use airfoils that have really good CL/CD numbers at low speeds but stall at medium speeds due to separation. The airfoil must be calculated at vEFF which produces variances from tip to root that are a factor of "r." I have found that many times this results in an Re of 1.5m-2m for airfoils that really only have high CL/CD's at around Re 500k. The airfoil profiles have to be balanced around their center of effort, I can see that your carbon blade is way to close to the leading edge; this produces the moment on the blade you are needing to react.
I'm very Sorry to understand only a Little bit than you are teaching cause you are Great and i'd never knew someone explain physics like you! So simple! Your project are so Cool and well explained! Not "i pick a computer fan and i turn It in a Electric generator with some magnets!"...you are awesome! Thank you from Italy! ♥️
Hi, thanks for the in-depth analysis and explanations in your videos. Sets your channel apart from many others that lack technical depth. It seems that the "rectifiers" that come with the Chinese wind turbines have other functions built in, and have variable performance. I would be very interested to see what power you could achieve (driving the generator with the lathe) if you connected the output through a simple 3-phase rectifier and used the output to charge a large 12V lead-acid battery that was less than half charged. This would show what the generator itself was capable of, without interference from a "Smart" controller.
At last a really valuable video on finding the limit. both on power RPM and overload. Without a battery after the wind turbine regulator the inverter will mess you around. Test would have been easier just with charging current.
Sack off the rectifier and inverter and build your own bridge rectifier with some diodes and find a resistive load like a toaster or some halogen lights. The problem may lay in all that electrickery.
Build bigger rotor and stator and a battery large enough to accept the wattage produced (ie. not cranking amps). There is also the brake disk wind generators.
From the Netherlands - nice video , thanks for that . It proves again , that a lot of items coming from Aliexpress are not up to spec. And that is putting it very politely . Batteries and their capacity , torches , lasers , magnets , windturbines , minerals , and even plant seeds , are not as they are presented. 18650 batteries that are 9800 maH , torches that go up to 200.000 lumen and fitted with Cree led's that do not exist, lasers that are 100mW but in fact 1 mW , N38 magnets rather then N52 , 300 W vertical windturbines that produce 8 W at best , minerals are made of plastic , and seeds that will grow multicoloured or blue roses . Having said this , from Alabama there is something called the "Microcube " . A 9x9x9 inch unit that outputs more than 200W at 23 mph , while the wind energy in a 9x9 inch surface is about 30 W at that wind speed. So keep up the good work and regards to your son , from ( almost ) the other side of the world.
Great video! I am all for "green" energy but whether you buy the cheap or expensive stuff you just can't over come the losses you get in the circuitry and from going to AC to DC then back to AC to run our home appliances. So in the end its just not a super efficient way to generate power, but thankfully science and technology is always improving so it will be some day. Again great video, look forward for future ones.
Wow your son is impressive! Smart little man. Geez I love these kinds of videos. This stuff is so interesting to me. I guess next you're gonna have to build your own 3 phase alternator....like a hugh Piggott design.
Sir need to contact with you, I am working for wind power vehicle ua-cam.com/video/zmg3LRElmQQ/v-deo.html But not sure what will happen but working. I need your valuable suggestions. If it is possible then please.
Have you considered using a vertical axis turbine and a tube that gets larger behind the generating section. Perhaps a generating set mounted on a trailer with a long enough space from the vehicle to the trailer to negate turbulence. Imagine having the generating part in a 3 foot tube, with a flare that goes out to 4 or so feet and see what that does. I wish I had money to support you, but that is not my case as a retiree. Put a wind sped gauge on the towing vehicle and in two places on the trailer. VAWT has some interest as far as resistance to damage from wind shear.
Definitely well worth watching. I think that the blades you need should be jet engine type blades . These blades should deliver more power from the wind or water.
2 fun thoughts on the wind powered car: 1) a cone of slow air forms in front of a stationary turbine. Moving the turbine into the wind changes the situation entirely. It behaves more like a much larger turbine or like denser air. 2) whatever amount of air is slowed down is gained as aerodynamics.
Your white generic wind-turbine seems to have exactly the same cheap Chinese-built alternator that we're using in our micro-VAWT tests. (see the comment i posted on your 'Rain Gutter Power #5' video) Replacing the ball-bearing will make a huge difference in efficiency. Nice to see the lathe-test. I was planning on doing exactly the same test, but using a big vertical milling machine. We're 'doing' VAWT, after all. Makes sense...
I was surprised that Ford could push that propellor, I did see black smoke. Great vid, good to get young smart azz kid ( exactly like mine) involved. Cheers
They're testing these turbines in the wind tunnel, we actually had one at Reading University (UK). They give you reproducible lab conditions but are not even comparable to real life application, especially in built-up areas, where these turbines yaw a lot and are pretty much a wholesome disappointment (plus in the occasional storm, they can rattle your masonry when roof mounted so that's not a good idea either!) The airstream at the front of your Bronco should be fairly consistent too, so it's disappointing to see that they do not even get anywhere close to the rated wattage.
Good video(s). In my experience having sold literally hundreds of Chinese motors (for scooters), China will print the output the buyer requests on the product. That's not to say that different spec motors aren't different, even the 600W vs the 800W motors are quite different, however unlike most American made motors I've tested which can handle double or triple the rated current for short periods of time, the 800W motors brush holders will liquify within seconds of doubling the output. I know because I built a scooter with two 800w motors and a 400A controller. Fun, but eventually the fire must be put out. That said, those windings are a bit anemic for 500W for more than a few minutes. I'm sure they will generate 500W. I have no doubt in my mind actually. What you need is a controller that will not protect them from harm. P.S. I'm really glad you removed the water heater from directly in front of the smart young man, Thank You
I learned so much from this and also found it very interesting! Careful with those sleeves around the laithe though! Had me biting my lip a couple times!
The connection from the battery to the inverter during lathe test was with a couple thin alligator clip jumper wires, so i think there's too much voltage loss.
Though about it a bit more. I think the power point set by your inverter is to low voltage and too high amperage, leading to major losses in the motor that make it spin slower and losing the power point over and over. You need a mppt to make sure you have a feedback loop checking what happens to the total power output if you play with the voltage to amperage ratio.
Use a relatively powerful wind up spring to spin the generator. With a hand crank to wind the spring. You could also use a flywheel and starter to wind the spring. You have the means and tools. Spring powered generator.
Have you considered an emergency brake for the turbine? At least electronically simply by shorting the coils. In case you drive near a school or want to go 155 mph on the freeway
stationary wind turbine tails turn toward the force of the wind . driving them around puts the at the mercy of wind shear. and still , having a multi surface object like the truck so close behind has to affect the air flow and pressure on the blades
You know your stuff. I mounted a 500w Apollo Turbine on my pickup, but I used a different rectifier/regulator. I used a 2007 Harley Rectifier/Regulator since Harley Alternators are 3 phase AC, waterproof, and built into it's own heat sink. The Harley regulators are shunt regulators (like the old Triumph's) that use 3 SCR's to shunt the positive AC voltage, of each AC wave, to DC ground, when 14.5v is reached, then resets crossing 0v, for each AC wave. This is good for unattended systems, because the shunting acts as a brake and stops the wind generators from over spinning.
@@QuintBUILDs No. I just measured voltage stable up to 50 MPH. I assumed low amps due braking action on turbine blades when voltage reached and battery was fully charged The trigger voltage is at the battery side, so if the battery is less charged, it won't trigger shunt until higher RPM's. Suppose an extensive test would involve a large battery bank with varying loads and RPM's. I did change the pitch on the blades using the angled spacers & achieved charging voltage at lower speeds.
I've heard that multi bladed turbines spin slower, but give more torque in low wind conditions! You might want to try a more sturdy 3 blade model. I also wonder why they don't use mechanical governors; it seems safer than burning out your windings!
I made a 3 meter diameter wind turbine out of cut PVC pipes, and a big BLDC motor, without knowing much about how wind works. I thought that if I have a big setup, then even though the wind in these parts is not that great, it will produce something. I was very wrong. That U^3 in the formula really messed up the power production. I was getting gusts of wind that would go up to 3-4m/s, but only very short gusts, and not more. There's never been constant wind here. Anyway, I since took down the turbine from it's place, and even though it was a failed experiment, I learned a lot. P.S. Perhaps the blade shape wasn't great as well, but my point still stands.
decent turbines only start producing at around 3.5m/s, ratings on commercial turbines are at 11m/s. gotta have minimum average of about 6m/s for the investment to be worthwhile
I had a idea years ago of putting a vawt inside a 12" PVC pipe with a servo moved fin to adjust how much wind comes in. It could be posted across the roof or above the head lights for experimental purposes.
Try higher voltage turbine, battery and inverter (24/48V). You are likely having a lot of losses in your current meter and all of the wires causing the turbine controller to shut off/brake due to too much voltage.The higher voltage system will have less current and less power loss
Very good info. I built my own blades and put onto a 500W DC motor but the results were weak. Now seeing this video I will make some changes to the build. Oh and I never knew the BUILD acronym. Time to redo the blades. I'm also adding Gearing to change the Direct Drive to a 10:1 ratio thus ramping up the motor speeds.
what would happen if you mounted the fan on the side or the roof? So to create wind energy :> ". In most large-scale turbines, the low speed shaft is connected to a gearbox. The gearbox increases the rotational speed of the shaft, up to 1200-1800 rpm. ".
Ive thought about adding wind turbines to a car before. The turbine needs to been in a wind tunnel that flows thru the cars panels. Like if you have opening in the front of the car the sucked in air and directed to a turbine and then the air flows out the back of the car. Idk how small a wind turbine could get but if the car is electric, has batteries and a small electric engine, you should be able to do this right under the hood.
as someone who studied wind turbines in college I can say without a doubt this video is gold.
Thanks Jesse!!!
the Whole Channel is a Gold.. Extract how much You Can !!
Jesse can you help me with evaluating a wind turbine site?
@@Mike-kr5dn tesup?
@@QuintBUILDs Thats the problem with micro wind. A LOT of the products are truly junk. Especially at that 400 watt scale. That being said I have a 1.5 kw Chinese turbine that I reliably get over 1kw out of anywhere above 22mph. Cost me $1200 but it was well worth it.
To say I’m a big fan is a understatement. so happy to see a new episode!
I think you meant, "I'm a big turbine". :P
Your kid is wicked smart. You’re a good dad. I wish my dad was this interested in electronics...
Hey mate, I did my honours project on wind tunnel testing of these small turbines in an automotive wind tunnel taking wake measurements of them. Your explanation of the concepts is amazing.
Early in my testing I came across the same automatic electrical braking at a particular voltage, which is proportionate to an upper limit of rotational speed to protect the turbine. In my testing I bypassed this electrical braking and my turbine performed significantly better as it wouldn't continuously brake when it reached a high voltage.
It can reach that voltage limit quite easily if the resistance supplied is high ohm (low physical resistance on turbine). This will produce a very low power but be sufficient voltage to trip the brake.
That sounds like an awesome project Thomas! Thanks for the insight on the resistance. Keep in touch as the project progresses. I wish I could go back in time and check out your wind tunnel setup. FYI, I bought a 7200w alternator for part 3. It's HUGE! Going to really test the formulas now. I'm going to connect it directly to heating elements rather than messing with the inverter/controller too. I've got big plans for parts 4 and 5 assuming it works. :)
Its nice to learn something new in a time like this, when everyone is bored at home.
15:12 the long sleeves so close to the lathe made me a bit dizzy. ^_^
I came here to say this, but you did. Thanks!
Awesome video! But shouldn't you be wearing short sleeves while working the lathe?
Lots of accidents happen because the long sleeves get pulled into the spindle.
Best regards! =)
I was waiting for his sleeve to get caught.
@@imatardable sleeves or coat itself. Loose or long clothes is a big negative near a lathe.
While a Mill will hurt you a Lathe will kill you.
The camera angle made it look like he was reaching over the lathe chuck. Those dangling sleeves made me cringe in fear.
A hammer will kill you if you are stupid enough. Any safety tip will fail if you are not aware of what's going on around you. Safety rules are mostly elimination of potential risk factors. Loose sleeves are definately one of them but it all depends on what you are doing and how experienced you are with various tools. You should put your seatbelts on when driving but it doesn't mean that you gonna die if you don't.
@@ardvark84
It doesn't. But if such a simple precaution helps lower the odds, why not put it in practice?
As you said, people die from the silliest, most harmless things, so why take the extra risk?
i like the channel and get the coat is part of your brand but please for your kids if that coat isnt a tear away wear short sleeves at the lathe when you turned to talk to the camera you where moving your hands as you speak got uncomfortably close to the spindle
I need help on this because now a days I am working on it ua-cam.com/video/zmg3LRElmQQ/v-deo.html
@CW NunyaDamnBiznez so what about results
@CW NunyaDamnBiznez very hypothetical talk, i can't understand all details but i guess , may be this project will make problem for life. Is it?
@CW NunyaDamnBiznez injured by self or by someone
@CW NunyaDamnBiznez thanks for your cooperation
A fun video thankyou. I successfully use a wind turbine to power my off-grid house. Credible designs that work are actually quite sophisticated in their operation.
I use a Berget XL1. At full power it produces about 42A at 25V. This output depends on the charging load and is reached at a windspeed of about 35kmh. It has worked very well for over 12 years
The controller in turbines like the Bergey is a digital controller with some similarities to a solar MPPT controller. It extracts energy from the rotational inertia of the blade disc in a way to maintain optimal rpm with respect to given wind speed and the load. It does this by extracting the energy in short pulses (in the Bergey about 30 pulses per second). As the wind speed increases and depending on the load, these pulses lengthen to keep rpm in a safe and efficient operating range. At very high rpm the controller starts to short the windings (in the Bergey case into a .2 Ohm resistor) to prevent turbine overspeed.
To have all this work in a balanced way it is very important to have a big battery to stabilise load voltage as this is one of the parameters the controller needs to reference many times per second.
For the turbine to work at optimal efficiency against lead acid batteries, ideally the battery in Ampere Hours needs to be ten times the maximum rated current of the turbine. In the example of my Bergey that means the battery needs to be 420AH. If you install small batteries the battery voltage jumps around too much causing the controller to misfunction. In my view in the case of the small 12V 500W turbines you should have a battery of at least 100AH, and preferably much higher.
You can get analogue regulators for wind turbines, these are more tolerant of fluctuating voltages but they are far less efficient because they don't optimise rpm and don't have overspeed braking.
Finally the cheap turbines have flexible blades that bend (furl) to dump excess disc pressure in overload situations where rpm cannot be controlled by braking. These are a suboptimal design prone to blade tip stall and flutter. For best efficiency the blades need to be relatively stiff with furling either by turning the blade disc out of wind (the Bergey method) or by a variable pitch mechanism that fully feathers the blades to stop them rotating.
Passive induction mechanical intakes could solve most of the issues that plague wind power generation. But they need to be downsized to homeowner sizes to be viable, imho.
You have a nice system.
Yeah and the battery thing is so true, like from your calculations even at full power it produces only 1050 W and just one toaster would probably take 1200 or something
I am loving these wind turbine episodes. Learning so much from them, and they're entertaining as hell.
This is a great video. I just happened to watch the ones related to rainfall generation. I wish I really had half your energy to build and run all these experiments. One thing worth commenting is that the wind turbine setup with a large car grille right behind the turbine may be blocking or deviating a portion of the wind energy from the rotor blades. Ideally, the wind turbine should be located on the roof (at a certain height) to better allow the wind flow directly on the turbine. I know this is very difficult. Just to point out where there could be a portion of the under performance observed with current setup. Keep it up. Thanks
Thicker wires in the motor can make a big difference lowering internal resistance through a long wire composing a coil, while thinner but short wires in controller might not make a huge difference. 21:09
A key issue with ALTERNATORs is that the faster you spin them, the higher the frequency of the AC flowing in the coils. At 1500 RPM with a 12 pole rotor, the frequency is up to 150 Hz. And that means the synchronous reactance of the windings is getting higher as well. In AC generators, the synchronous reactance is much more limiting than the simple DC resistance. So even if you spin them at a few thousand RPM, there's still a limit to how much current you can get out.
"Wind power on a car #2" or "How to burn up a lathe without even trying"
I love this stuff. Keep it up.
Yeah, I was concerned for sure...
I actually had this same idea 20 years ago, but was too involved in other projects. My thought on this is I always thought it would work.
The best application I can think of for this would be RVs and travel trailers that would have a battery bank for storage of the electricity. It would allow you to have electricity much longer in remote locations, and combined with roof mnted solar panels, would be a much longer lasting supply than the panels alone, which is what we see today. Id up the normal 2 rv batteries to at least 6-8. Add those watt-hours up and you'll see its quite a bit. Add an auto bypass to that and when the batteries reach charge, the current from the wind gen can be used to heat the water tank so you have more hot water without using propane. Cool video, Sonny T
Awesome job, you're like a less known Applied Science. Your kid is awesome as well. I had my doubts he'd understand the variac tuning situation, but it sounds like he completely had it down.
Thanks, yeah editing the footage I was surprised how quickly he dove in adjusting it when the turbine finally started working.
One issue I can find here is with the choice of inverter. I noticed you're using a modified sine wave inverter. Those are cheap, easy to find, and only about 80% efficient. Also they can kill motors and have an enormous amount of harmonics that can damage electronics.
I'd recommend trying a good pure sine wave inverter. Those are about 98% efficient and usually have fewer harmonics than even grid power.
Should that matter when the current is being measured prior to the inverter?
What is a 20% loss in efficiency before the loss in efficiency?
After many hours of watching CGI videos of wind turbine concepts, hopeful NEWS reports, and home built wind toys, here's the real deal.
Well done, you and your son!
Great video and I really appreciate you showing the failures and misjudgment. It would be easy to cut those parts out but it's good to see that.
Fantastic, love the whole approach to the subject.
Those "cheap" wind turbines sold on Amazon are mostly overrated overpriced junk. The real marine ones, for small vessels, cost well over 1000$, both in HAWT or Gorlov configuration and sometimes those too have overrated specs for marketing purposes.
Looking forward to the next video.
Interestingly 1000 Watt car dynamo's cost slightly over 100 euro's, even less from the car butcher. They run at high speeds, but they charge batteries at 1800 car rpm.
@@albertvanderhorst4160 Do you mean an alternator? Never seen a 1000W alternator, usually they are rated in V for electric potential, not in W for power. Do you have any examples?
@@gafrers 12 V 90 Ampere is about 1000 Watts in my book. I have such an alternator in my Mondeo 2.0. I can buy a used one for 35 euro's. Obviously 90 A is at 6000 rpm times the transmission gain.
@@albertvanderhorst4160 Price difference is that, higher rpm, semiprotected enviroment, not exposed to direct saltwater, mass produced.
@@gafrers My Ford Mondeo Ghia has a 80 Amp alternator for a standard 12V lead battery. That is about 1000 W in my book.
that "strobe effect" at 29:07 is called rolling shutter. Its where the thing spinning in front of the light sensor in the camera matches (or closely matches) the shutter speed of the camera. i believe corridor digital (youtube channel, check them out) did a video on this in an airplane a couple years back
Inspiring video which has been done a lot of times by others, some people build cars around the turbines lol. This shows us that the idea is brilliant but the results are still not very promising. It also shows me that there must be another way to make use of the wind on your car. My idea is that we have to use the wind AROUND the car! Using the front wind and using the draft behind a car to trick the Betz limit theorie. It resulted into a prototype that works on these principles. A so called Push/Pull generator which will spin on a very high speed going up to a couple of thousand RPM and being reduced by a gearbox if the speed is to high for a normal wind generator. Maybe a car generator can do this job because they can go up to 10.000 RPM and higher. This Push/Pull generator has the ability to go up in speed to that circumstances of a normal car generator and can produce the same amount of power this car generator can produce. It should be around 12 Volts and 25 to 30 Amps loading power to charge the battery on a car. I think this idea works way better then most of the wind generators on the market right now, but it's made for the use on cars only. I am working on a type that can be used in open field or at your house. Same theorie but a little different then my Push/Pull generator.
Takes airbag out of passenger side, adds metal plate for increased head cushioning, at least he is wearing safety glasses! Haha, great video, I enjoyed every bit.
Cool project, but I wanna know more about that Bronco! Noticed it's a 70s from the front end, then did a triple take when I saw the dash. Super neat! Did you swap anything else like power train??
78 bronco with the guts from a 2004 f150. engine, trans, transfer case, abs module, a/c, power windows/doors... just about everything.
@@QuintBUILDs VERY NICE!! I noticed the passenger airbag disabled light, so assumed you did more than just the dash. Super cool man!
That is a super neat truck! I live in Hillsboro, maybe I'll see it driving around! Should be easy to spot with the turbine on the front :)
Oh my, I kept wondering why. I thought it was just the dashboard!
Why cant you be one of my mechanical engineering professors. :(
He is !!!!
Awesome video! You put so much effort and care into these videos, and it shows!
Thanks for noticing Brian! It's about 10x the effort I expected but still fun!
Omg, this video is what I exactly needed just right now because I am building a wind turbine project for my channel also and I run into problems how long turbine blades have to be! REALLY GREAT WORK!!!!
You're very smart, man. I wish more people would watch your videos. I like them a lot.
Spread the word! 👍
Yet another brilliant video. Just as the excitement builds you cut it off... SO MEAN!!! Also, love that your son is so involved, future world-class engineer in the making there.
The PWM "inverter" is probably a lot of the issue. Buy a MPPT inverter since it will always analyze the power and try to pull more or less amps to increase the power
Even though me being an engineer (CS) I find it hard to understand some of the calculations, the passion you have while trying out different solutions keeps me hooked. sharing your content with my friends.
CS is a useful major. But what is your engineering degree in? JK...you set it up too well.
So interesting seeing the the fact checking of what the manufacturer said the capability was versus reality, I'm excited to see how you engineer it to actually work
25:47 rolling shutter always looks so funny :D
Yeah i forget just now the two types of sensors in cameras that produce two different effects. There are a bunch of videos online showing how they differ. Okay I just googled it, CMOS and CCD. I could nerd out on that all day...
There was a guy in St Pete FL that I used to see all thw time at home depot that did this same thing. I never knew what he was charging but it was interesting to see. He had his bn on the back of the van and it was over the top of it on a movable arm he could raise and lower.
How are you making those great animations on the note pad? Really great videos!!
Thanks! Some of it is sketched by hand, the rest is drawn in Adobe elements and imported into the timeline in Adobe premiere (png format I think, no background comes with it). I wish it was just a tiny bit more capable in the 3D motion but am able to make it work. I'm glad you like it, it's one of my favorite parts of the editing process. 👍
@@QuintBUILDs I've become really good with PowerPoint because of a guy on UA-cam called OneSkill. It might help you a little, but your work is exceptional as is. I just like the new animation tools in PowerPoint that they've created.
I'll check it out, thanks!
Is there a video in particular you can recommend?
@@QuintBUILDs ua-cam.com/video/z0rsGRTK0k8/v-deo.html
Dankie/Merci/ Thx Clint and Grant 4 this educational video. It's great and love it. It also shows not to go with every thing the maker says. A max of 200W out of a windmill of 400 W (500W)!
I got major Anakin Skywalker ("yipee!") vibes from your kid when it started working. Make sure you bet on him in the podraces. =)
Is that the child genius with you?
Blade pitch plays a huge role in efficiency so keep that in mind and controller part of it..
You can use simple rectifier ckt. Connected to MPPT change controller and see what it can do....👍
I support that suggestion. Seems like a plan.
After waiting for so long...half an hour Video was all I needed
Little thing I suggest you should look at: The Reynolds number for the airfoils at the tip speeds. Many of the "college" based tools use airfoils that have really good CL/CD numbers at low speeds but stall at medium speeds due to separation. The airfoil must be calculated at vEFF which produces variances from tip to root that are a factor of "r." I have found that many times this results in an Re of 1.5m-2m for airfoils that really only have high CL/CD's at around Re 500k.
The airfoil profiles have to be balanced around their center of effort, I can see that your carbon blade is way to close to the leading edge; this produces the moment on the blade you are needing to react.
Scientifically enterteining , well done, keep on man!!
I'm very Sorry to understand only a Little bit than you are teaching cause you are Great and i'd never knew someone explain physics like you! So simple! Your project are so Cool and well explained! Not "i pick a computer fan and i turn It in a Electric generator with some magnets!"...you are awesome! Thank you from Italy! ♥️
Liked a lot, all those sincere and relentless efforts will surely make the objective achieved in future
Cant wait for part #3 Super nice content and your partner is great aswell :)
xD the editing on these videos is priceless !
Hi, thanks for the in-depth analysis and explanations in your videos. Sets your channel apart from many others that lack technical depth.
It seems that the "rectifiers" that come with the Chinese wind turbines have other functions built in, and have variable performance. I would be very interested to see what power you could achieve (driving the generator with the lathe) if you connected the output through a simple 3-phase rectifier and used the output to charge a large 12V lead-acid battery that was less than half charged. This would show what the generator itself was capable of, without interference from a "Smart" controller.
Maybe a 1000 amp or more marine deep cycle battery?
At last a really valuable video on finding the limit. both on power RPM and overload. Without a battery after the wind turbine regulator the inverter will mess you around. Test would have been easier just with charging current.
Thanks Ian! 👍
Sack off the rectifier and inverter and build your own bridge rectifier with some diodes and find a resistive load like a toaster or some halogen lights. The problem may lay in all that electrickery.
Build bigger rotor and stator and a battery large enough to accept the wattage produced (ie. not cranking amps). There is also the brake disk wind generators.
From the Netherlands - nice video , thanks for that . It proves again , that a lot of items coming from Aliexpress are not up to spec. And that is putting it very politely . Batteries and their capacity , torches , lasers , magnets , windturbines , minerals , and even plant seeds , are not as they are presented. 18650 batteries that are 9800 maH , torches that go up to 200.000 lumen and fitted with Cree led's that do not exist, lasers that are 100mW but in fact 1 mW , N38 magnets rather then N52 , 300 W vertical windturbines that produce 8 W at best , minerals are made of plastic , and seeds that will grow multicoloured or blue roses . Having said this , from Alabama there is something called the "Microcube " . A 9x9x9 inch unit that outputs more than 200W at 23 mph , while the wind energy in a 9x9 inch surface is about 30 W at that wind speed. So keep up the good work and regards to your son , from ( almost ) the other side of the world.
Seeing things NOT working and trial and error is really great encouragement for the rest of us.
I learned about the strobe effect from Smarter Every Day when Destin explored how CMOS sensors work. Pretty cool!
Great video!
I am all for "green" energy but whether you buy the cheap or expensive stuff you just can't over come the losses you get in the circuitry and from going to AC to DC then back to AC to run our home appliances. So in the end its just not a super efficient way to generate power, but thankfully science and technology is always improving so it will be some day. Again great video, look forward for future ones.
Wow your son is impressive! Smart little man. Geez I love these kinds of videos. This stuff is so interesting to me. I guess next you're gonna have to build your own 3 phase alternator....like a hugh Piggott design.
cool,theoretical maths verses engineers reality
Theory and practice are the same, in theory, but not in practice.
Sir need to contact with you, I am working for wind power vehicle ua-cam.com/video/zmg3LRElmQQ/v-deo.html
But not sure what will happen but working. I need your valuable suggestions. If it is possible then please.
2:14
It's one of those moments where you think, 'Wow, I never thought of that...' .
Have you considered using a vertical axis turbine and a tube that gets larger behind the generating section. Perhaps a generating set mounted on a trailer with a long enough space from the vehicle to the trailer to negate turbulence. Imagine having the generating part in a 3 foot tube, with a flare that goes out to 4 or so feet and see what that does. I wish I had money to support you, but that is not my case as a retiree. Put a wind sped gauge on the towing vehicle and in two places on the trailer. VAWT has some interest as far as resistance to damage from wind shear.
Definitely well worth watching. I think that the blades you need should be jet engine type blades . These blades should deliver more power from the wind or water.
2 fun thoughts on the wind powered car: 1) a cone of slow air forms in front of a stationary turbine. Moving the turbine into the wind changes the situation entirely. It behaves more like a much larger turbine or like denser air. 2) whatever amount of air is slowed down is gained as aerodynamics.
Your white generic wind-turbine seems to have exactly the same cheap Chinese-built alternator that we're using in our micro-VAWT tests. (see the comment i posted on your 'Rain Gutter Power #5' video) Replacing the ball-bearing will make a huge difference in efficiency.
Nice to see the lathe-test. I was planning on doing exactly the same test, but using a big vertical milling machine. We're 'doing' VAWT, after all. Makes sense...
I was surprised that Ford could push that propellor, I did see black smoke.
Great vid, good to get young smart azz kid ( exactly like mine) involved.
Cheers
They're testing these turbines in the wind tunnel, we actually had one at Reading University (UK). They give you reproducible lab conditions but are not even comparable to real life application, especially in built-up areas, where these turbines yaw a lot and are pretty much a wholesome disappointment (plus in the occasional storm, they can rattle your masonry when roof mounted so that's not a good idea either!) The airstream at the front of your Bronco should be fairly consistent too, so it's disappointing to see that they do not even get anywhere close to the rated wattage.
Good video(s). In my experience having sold literally hundreds of Chinese motors (for scooters), China will print the output the buyer requests on the product. That's not to say that different spec motors aren't different, even the 600W vs the 800W motors are quite different, however unlike most American made motors I've tested which can handle double or triple the rated current for short periods of time, the 800W motors brush holders will liquify within seconds of doubling the output. I know because I built a scooter with two 800w motors and a 400A controller. Fun, but eventually the fire must be put out.
That said, those windings are a bit anemic for 500W for more than a few minutes. I'm sure they will generate 500W. I have no doubt in my mind actually. What you need is a controller that will not protect them from harm.
P.S. I'm really glad you removed the water heater from directly in front of the smart young man, Thank You
I learned so much from this and also found it very interesting! Careful with those sleeves around the laithe though! Had me biting my lip a couple times!
*THE HAND FAN RETURNS!*
Neighbor: "Steward, come look. Quint is out playing with his propeller car again."
Other neighbor: “Not again. I guess he’s improving, at least this one doesn’t have hands on it.”
When your Bronco becomes the DeLorean on the inside from Back To The Future.
YES!!! I seriously considered a replica dash but once I looked up the details it didn't quite align with the project. But I wanted to so bad! 😂
Quint BUILDs
That would be epic! That’s one heck of a project to do!
So true!
The connection from the battery to the inverter during lathe test was with a couple thin alligator clip jumper wires, so i think there's too much voltage loss.
Very interesting. please keep producing these videos! And ignore any negative comments we all can only learn more by sharing more!
Though about it a bit more. I think the power point set by your inverter is to low voltage and too high amperage, leading to major losses in the motor that make it spin slower and losing the power point over and over. You need a mppt to make sure you have a feedback loop checking what happens to the total power output if you play with the voltage to amperage ratio.
Can not wait to see your version and investigate the issues of the “off the shelf” items
Use a relatively powerful wind up spring to spin the generator. With a hand crank to wind the spring. You could also use a flywheel and starter to wind the spring. You have the means and tools. Spring powered generator.
Have you considered an emergency brake for the turbine? At least electronically simply by shorting the coils.
In case you drive near a school or want to go 155 mph on the freeway
That's not a bad idea. A 3-phase E-stop. I'll think about that for the next "phase" of the project!
stationary wind turbine tails turn toward the force of the wind . driving them around puts the at the mercy of wind shear. and still , having a multi surface object like the truck so close behind has to affect the air flow and pressure on the blades
You're scaring the hell out of me getting those sleeves that close to that lathe while you're pointing stuff out.
You know your stuff. I mounted a 500w Apollo Turbine on my pickup, but I used a different rectifier/regulator. I used a 2007 Harley Rectifier/Regulator since Harley Alternators are 3 phase AC, waterproof, and built into it's own heat sink. The Harley regulators are shunt regulators (like the old Triumph's) that use 3 SCR's to shunt the positive AC voltage, of each AC wave, to DC ground, when 14.5v is reached, then resets crossing 0v, for each AC wave. This is good for unattended systems, because the shunting acts as a brake and stops the wind generators from over spinning.
Were you able to measure the output?
@@QuintBUILDs No. I just measured voltage stable up to 50 MPH. I assumed low amps due braking action on turbine blades when voltage reached and battery was fully charged The trigger voltage is at the battery side, so if the battery is less charged, it won't trigger shunt until higher RPM's. Suppose an extensive test would involve a large battery bank with varying loads and RPM's. I did change the pitch on the blades using the angled spacers & achieved charging voltage at lower speeds.
I've heard that multi bladed turbines spin slower, but give more torque in low wind conditions! You might want to try a more sturdy 3 blade model.
I also wonder why they don't use mechanical governors; it seems safer than burning out your windings!
Rotational velocity and forward velocity create the angle of attack on the turbine blade.
That was the subject of part 1
I made a 3 meter diameter wind turbine out of cut PVC pipes, and a big BLDC motor, without knowing much about how wind works. I thought that if I have a big setup, then even though the wind in these parts is not that great, it will produce something. I was very wrong. That U^3 in the formula really messed up the power production. I was getting gusts of wind that would go up to 3-4m/s, but only very short gusts, and not more. There's never been constant wind here. Anyway, I since took down the turbine from it's place, and even though it was a failed experiment, I learned a lot. P.S. Perhaps the blade shape wasn't great as well, but my point still stands.
decent turbines only start producing at around 3.5m/s, ratings on commercial turbines are at 11m/s. gotta have minimum average of about 6m/s for the investment to be worthwhile
The upside down meter was so funny I paused the video just for laughing for a while 😂😂😂
Good work, I will try with a large turbine 2kW, 120V and a programmable controller.
Love your videos. Especially the way you go into detail about real world concepts and history.
I had a idea years ago of putting a vawt inside a 12" PVC pipe with a servo moved fin to adjust how much wind comes in.
It could be posted across the roof or above the head lights for experimental purposes.
Thumbs up for using a TDS 210!
LOL @ 16:36 ... Back to the Future: Part IV
I wish my dad was a crazy scientist :(
24:27 this kid knows what he's doing. #FutureEngineer
You’re a hero! Thank you so much for sharing such great work. It is gold indeed
just great again!!
Try higher voltage turbine, battery and inverter (24/48V). You are likely having a lot of losses in your current meter and all of the wires causing the turbine controller to shut off/brake due to too much voltage.The higher voltage system will have less current and less power loss
Try 11 blade model with skewed magnets !! Great video & info, nice work .
Very good info. I built my own blades and put onto a 500W DC motor but the results were weak. Now seeing this video I will make some changes to the build. Oh and I never knew the BUILD acronym. Time to redo the blades. I'm also adding Gearing to change the Direct Drive to a 10:1 ratio thus ramping up the motor speeds.
Can't wait for the next video!
Your kid must be very proud of you. Man i wish i had a father like you.
Outstanding, can't wait to see what you come up with.
what would happen if you mounted the fan on the side or the roof? So to create wind energy :> ". In most large-scale turbines, the low speed shaft is connected to a gearbox. The gearbox increases the rotational speed of the shaft, up to 1200-1800 rpm. ".
another awesome science project can,t wait for part 3
Thank you for a wonderful video. It's great to see the theory-hypothesis-experiement-review-repeat cycle in action :)
Nice done i don't know how fast a dynamo of a car need to turn but those dynamo can give 70A ad 13V
It very nice. Keep it up by doing different things on wind turbine.
Ive thought about adding wind turbines to a car before. The turbine needs to been in a wind tunnel that flows thru the cars panels. Like if you have opening in the front of the car the sucked in air and directed to a turbine and then the air flows out the back of the car. Idk how small a wind turbine could get but if the car is electric, has batteries and a small electric engine, you should be able to do this right under the hood.