Darrieus combined Magnus effect vertical axis wind turbine, for renewable energy
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- Опубліковано 6 вер 2024
- This experiment shows a hybrid vertical axis wind turbine which use Magnus effect to start the lift blades ...
Patent:TWI 710698B
For more information,refer to：smartservo.org/...
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Great idea to use magnus rotors driven by small bldc motors for starting only ! Bravo !
Thanks, hope this helps make VAWT more practical.
One attractive thing about Vertical Axis Machines. On conventional wind turbines the generator set set is mounted at the top of the pylon. Increasing the difficulty of servicing or repair of needed. Plus increasing the mass at the top of the pylon requires mass in the foundation. With a Vertical Axis Machine the generator set is mounted basically at ground level giving much easier access to the mechanical systems.
yes, you're right
You can have the starting columns on a cam which make them move into the centre when speed increases to increase RPM. Just like a figure skater changing from arms wide out to arms on her chest. Speed increase is dramatic. André in Sydney
It's a trade off between starting torque and mechanism complexity. I prefer to use a more powerful Magnus rotor => ua-cam.com/video/gMym621FtR8/v-deo.html
,rather than adding complexity to the mechanism.
@@SmartServo_org Renewable energy generators are largely about reliability and long term use for low cost. Keeping it simple helps lower running costs overall so completely agree :)
I got quite excited watching this, keep going and perfect this system.
Thanks
I think what you are doing is worthwhile and well thought out. Some of these comments seem oddly unhinged.
Thank you for your reply and agreement
Excellent work!!!
thanks
@@SmartServo_org greeting.
Kindly , what average wattage , voltage , amperage can small wind turbine ( 18 inches max in size ( blades or any different design ) can be produced at speed of 40 miles per hour.
Can this turbine stand wind of 80 miles per hour and produce more energy ?
And what's the difference if it become 48 inch size wind turbine blade ?
I know this request may sound odd and impossible to create firm.answers...but approximately is more than enough.
Με την έρευνα προχωρά η επιστήμη! ! !
you are right
More conventional smaller VAWTs would also create a Magnus effect force in the opposite direction of rotation, right?
I was also wondering about the three small VAWTs configuration, Vs say 2 or 4 small VAWTs. A bigger number presumably shadowing each others' wind more.
PS: which text-to-speech software did you use?
I'm not sure what the three small VAWTs you mention are. There's only 1 VAWT here. If you mean blades or rotors, the more the number, the greater the starting torque but the less efficient.
google translator
@@SmartServo_org well, the rotors could be full VAWTs, right? Their clockwise rotation would induce a counter-clockwise Magnus effect I believe.
Great work
Really Awesome 🔥🔥
Thanks
Hi may I ask if you have an available document for the patent report of this product? We are using the same idea that you presented here in our study too and we would like to include your claims in our paper in order to strengthen our study. It would be greatly appreciated. Thank you very much.
The public document of this patent is as link => patents.google.com/patent/US20210163109A1/en?oq=US20210163109A1,
which has not been approved except for Taiwan.
@@SmartServo_org thank you very much
It's a good idea to try and reduce the power input and maximise power output from renewable.
It would be amazing to have one at home that could raise up and down a pole above trees and only when it's windy etc.
The use of a rotor allows the Darrieus wind turbine to start and keep the rotational speed in the proper range, which is helpful for efficiency.
Test it horizontally also. 👍
refer to => ua-cam.com/video/uafRQlRvAkM/v-deo.html
absolutely amazing, you could be the one who makes green energy the best answer again ✅
Thanks, I'm just showing my concept, most people don't understand it.
@@SmartServo_org you got something good. Keep at it.
@@dashman13 Thanks
Thanks, I just really hope that vertical axis wind turbines will one day be popular.
So Beautiful
thanks !
Wot if I say there might b way to increase efficiency of this type of turbine?
I would say ex0lain further
I hv ideas, not sure original or not, 1 was but it got away from me, anyway there is no way without money to determine efficiency, small scale model has some torque to it, if it works as i suppose, useful, so I wud b willing to put it out there,
with some recognition, other ideas I promote, again not complete sure, no discouraging words yet, spinning battery
space wheel,
Use dyson concentrating air beams
Wow!
Would have been useful to hide the Magnus effect starter turbine from the wind after the main turbine catches up and gains its own rotation. Maybe. 🤷♂
In my few experiments, the Magnus starter did not slow down the main turbine much when the rotor was stopped. Because the starting torque is generated by the rotation of the rotor, the size of the rotor can be as small as possible, not as large as the traditional drag blade.
@@SmartServo_org
Well, the starter -even a tiny one- stands in the air stream which turns the main turbine. If that starter could disappear completely, slightly more wind energy would blow onto the turbine blades. And, yes, I realize this type of starter is more effective than any conventional option used today.
I just have no idea how to make the starter vanish, it’s not a freaking Optimus Prime transformer :)
Oh, wait! An idea. What if you put the starter above the main turbine?
beautiful__ :-) _ .
thank u. i shall test a facsimile, of ur lovely machine - awesome.
thanks
hi, do u start small motors with batteries connected to rotor?
I use a DC 12V adapter so batteries will work too.
How much does all the equipment weigh if it had to be raised up on a telescopic pole for use??
This is just an experimental setup and can't be used outdoors, so I didn't measure the total weight, maybe 2 kg. Each blade is 150 g with aluminum tubes inside. The rotor is made of Styrofoam so it's very light. Each small motor is Only 55 g. The height of the wind turbine is 0.4m and the diameter is 1m.
Hi, can I ask for the detailed dimensions you use on your Darrieus-Magnus Wind Turbine?
The information is listed in the description below the newer video => ua-cam.com/video/qAYjPSDGPo4/v-deo.htmlsi=fKFSlM4s-t9VfQa0
Thank you so much sir@@SmartServo_org
Is this the most efficient and cheeper way to have energy from air? Thanks a lot
Compared with starting a small windmill by drag blades, according to my experiments, the torque of Magnus rotor is larger, so the rotor can be designed to be smaller, and the interference to the lift blades is smaller and the efficiency is better. As for the big windmill, as mentioned in the video, you can save money by replacing the huge starter motor and reducer.
Whats this a test for 360° Wind? (Surround wind?)
tornado?
Hot about adding the
Photovoltaic, thermoelectric and droplet based electricity generator
Or artificial photosynthesis
XD
Have you considered magnetic accelerated wind turbines?
No
Can i know wht is the measurement for the form like diameter and length, wht type of form that i can use for this ?
Blade：NACA0015
Height 0.4 m，Chord 0.12 m
Rotor(Cylinder)
Height 0.2 m，Diameter 0.05 m
Strut
Diameter 1.02 m（for blade）
Diameter 0.25 m（for rotor）
One the wind hits the outer blade then the money it hits the cylinder the kinetic energy is almost used up. Net effects is drag and dead weight
If you're right, the turbine will not continue to accelerate after 4:00 of the video.
@@SmartServo_org it will still accelerate but using used up kinetic energy of the wind. In OTHER WORDS, INEFFICIENT!
And the number of blades can be increased from three to four or six..
Too many blades will lead to low speed, although it is easier to start but inefficient. Conversely, a windmill with few blades has higher efficiency but is difficult to start and must have a starting device.
For what purpose you use ardiuno
It’s not necessary to use arduino, it’s just that I’m familiar with it.
it setup have high efficiency and low start speed? that's why you used high rpm generator. ok high rpm is used to have magnas effect.
No generator in this test. The characteristics of Darrieus turbine are high efficiency but poor self-starting ability. The common method is to use wider blades (or increase blade number) to help start, but this will reduce the top speed and is not conducive to efficiency, so it is difficult to balance startability and efficiency. This video Demonstrating a concept, the narrow blades can be started by the rotating rotor (Magnus effect), when the turbine speed is fast enough, the narrow blades can achieve high efficiency, and the Magnus rotor can be stopped.
Can you give the torque?
You can refer => ua-cam.com/video/VhYlu0M28l0/v-deo.html ,but need to use youtube's subtitle translation
p.p.s. ..how about.. -- construct as : Singular signal-encoder to controller - for Bl-DC 'Turbine' drivers .?.. .
. .. *) 360° / 3 = 120° --- then program (* .
. .
. all the Best . .
. just-in-light .
In the video, the encoder is divided into 3 layers, the upper 2 layers are 2 semi-circular plates with a difference of 90 degrees, which are used to divide 360 degrees into 4 areas, each area is 90 degrees, and the initial position can be estimated as the center of the current area, so the error is no more than +/- 45 degrees, which is small enough to make the initial rotation of the rotor correct according to the command you wanted. When the wind turbine starts to rotate, since it only rotates in the same direction, the pulse of the third layer can be used to calculate the angle of the main shaft, and when a change in "area" is detected, the current position can be corrected again.
i am not going to buy it though. I'll buy low rpm. which provides high resistance to wind in starting. you don't have to wait for magnas effect.
Maybe you need to measure the TSR (tip speed ratio) of the turbine to estimate how well the turbine is performing.
Moj komentar ak chceme viuzit vietor len na vyrobu energie zapriahnime vsetki tri valce a nie jeden poznam sposob ako vyrobit extremne viac
Cylinders are for starting only
high rpm generator is used here?
no
Lol... Efficiency... ridiculous.
U have no knowledge off kinetic energy loss
This type of eggbeater rotor has been proven to fail miserably. Also the variable pitch blades are not complicated at all. Search for Sharp Cycloturbine vawt for the best, self starting darrieus type of wind turbine.
This question is a matter of opinion and I hope you succeed.
@@SmartServo_org Not an opinion, just 10 years of experience in vawt technology.
Foolish idea
p.s.
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