This is a hybrid of Darrieus and Magnus, not Savonius. You can refer to the link for information on Magnus parts => smartservo.org/en/magnus-vawt-files-open-en/
@@SmartServo_org sorry, i meant the darrieus part. If i can get the cad file for the naca 0015 blade and all the other 3d printed parts. Thank you for your work
Hello, that's fantastic content right here, thank you for sharing it! I have a question though : I can imagine that helical blades reduce the torque oscillations, but is there any efficiency difference between helical and H rotor VAWTs ?
Why 3 blades over something like 4? Also will you try adding load to the device? Perhaps see how much power it can generate? Would love to make one myself for an off grid project. 👍
I have to wonder if it wouldn't just be easier and cheaper to have a small motor and propeller mounted on the main wings. It could even works as a generator recovering the power used in starting the windmill. Or since you are using electric power to start the turbine, why not just use the main generator as a motor to start the turbine.
Starting a small Darrieus wind turbine with an electric motor is possible, but not suitable for large windmills => ua-cam.com/video/9AdpggaOfF0/v-deo.htmlsi=b-G_XPWIguWE6TJe
Wouldn't it be easier (and cheaper) to mount just one starting/acceleration motor to drive a shaft (axle) of the turbine , until it's operating speed is achieved ? On the other hand , in my mind , it would be more effective , if some kind of "flaps" (like on the airplane wing) were introduced as part of turbine wings/airfoil - which would open at zero air speed and closed when minimal operating speed is achieved , so , no additional drag (like in the first suggestion ) would be added. Just a thought...
Directly starting the main shaft with a motor is one of the methods currently used in medium and large VAWTs. It faces many serious problems and cannot be popularized. Due to the extremely large inertia of the wind turbine, the required starting motor power must be very large, and even a reducer is required to amplify the torque. In addition, a high-power inverter is also indispensable, resulting in high cost and easy failure. If the generator also serve as the starter motor, it would be an engineering difficulty for the motor to have both low-speed high-torque and high-speed efficiency. Therefore, using the method in this video only requires a small-power starting motor to drive the rotor instead of the entire wind turbine, and the starting device is independent of the generator to make the system simpler. see this => ua-cam.com/video/9AdpggaOfF0/v-deo.htmlsi=s8PNT0CXYeIHj3ZX
@@SmartServo_org Thanks for the reply. I'm well aware of stated points and also of the problems , regarding producing wind powered energy in large scale (I mean , beyond home/small business use). People tend to be very interested in physical efficiency of the system(s) (in this case wind turbine) , but they often forget cost efficiency. Although airfoil wind turbines are amongst most physically efficient turbines (given the right average wind conditions , at given location , besides duct-ed/venturi wind turbines) , those are amongst most expensive to manufacture (especially large ones with curved , or helical blades). This idea with Magnus effect starters isn't bad and may give better results (quicker start) if the rotors are further away from the turbine shaft therefore increasing torque (not sure about effect on overall efficiency of the turbine , some tests needed) , but I still think that servo regulated flaps on the leading edge may work just as well (though with added complexity in a production of the blades). I just prefer simple mechanical solutions , over high tech ones. Also , there is possibility to put multiple starter motors within the base of the turbine (attached to the shaft via big diameter gear) which would reduce required power for starter motors (lower torque/high speed motors) and may be used as mechanical brake rotor , in case of excess wind. It would insure better accessibility for maintenance and probably increase work longevity of those motors (again , more cost upfront for building a base , but there will be no interruption of turbine production , during the maintenance). It is all trade offs . Anyway , there are many technical solutions for producing large wind turbines , as long as governments are willing to give incentives to the investors , until something else comes into the fashion (I mean , energy production wise - related to the governments) . I'm more proponent of smaller decentralized systems. You have good idea anyway !
Why not make "open Wing-profiles"! Same as the Darrius type but half sized in up and down to put the horrizotal wings on! No nothing in slowing the Darrius VAWT!
Too bad not enough companies are interested in wind energy. In some places where the winds are constant and strong, these would be ideal energy production devices. But if they were ever produced, the manufacturer would price the things as much as a 5 series BMW.
As far as I know, there are many companies interested in wind energy, but they cannot provide a good product to satisfy the market.Vertical axis wind turbines currently on the market are notorious and I try to come up with a new way to change that.
Good day, would it be possible for me to get the design for the darrieus savonius hybrid....i would love to recreate something like this
This is a hybrid of Darrieus and Magnus, not Savonius. You can refer to the link for information on Magnus parts => smartservo.org/en/magnus-vawt-files-open-en/
@@SmartServo_org sorry, i meant the darrieus part. If i can get the cad file for the naca 0015 blade and all the other 3d printed parts. Thank you for your work
@@adebolaoyedele1206 Okay, I'll make it public in a few days
@@adebolaoyedele1206 Here are the 3D parts I used for Darrieus VAWT, you can download and use it => smartservo.org/en/darrieus-vawt-files-open-en/
@@SmartServo_org thank you so much.🙏🏽 i really love your work
Hello, that's fantastic content right here, thank you for sharing it!
I have a question though : I can imagine that helical blades reduce the torque oscillations, but is there any efficiency difference between helical and H rotor VAWTs ?
Why 3 blades over something like 4? Also will you try adding load to the device? Perhaps see how much power it can generate? Would love to make one myself for an off grid project. 👍
Loading experiment in progress
@@SmartServo_org very excited to hear about this! Thanks so much for your hard work 🙏
Good ! Thank you !
нужно сделать 2 группы роторов, одну группу расположить выше верхней плоскости, вторую - ниже нижней плоскости турбины
Very very good experiments
Thank you for your appreciation
what software is that ?
All project files have been released => smartservo.org/en/arduino-source-code-for-magnus-vawt/
I have to wonder if it wouldn't just be easier and cheaper to have a small motor and propeller mounted on the main wings. It could even works as a generator recovering the power used in starting the windmill. Or since you are using electric power to start the turbine, why not just use the main generator as a motor to start the turbine.
Starting a small Darrieus wind turbine with an electric motor is possible, but not suitable for large windmills => ua-cam.com/video/9AdpggaOfF0/v-deo.htmlsi=b-G_XPWIguWE6TJe
Wouldn't it be easier (and cheaper) to mount just one starting/acceleration motor to drive a shaft (axle) of the turbine , until it's operating speed is achieved ? On the other hand , in my mind , it would be more effective , if some kind of "flaps" (like on the airplane wing) were introduced as part of turbine wings/airfoil - which would open at zero air speed and closed when minimal operating speed is achieved , so , no additional drag (like in the first suggestion ) would be added. Just a thought...
Directly starting the main shaft with a motor is one of the methods currently used in medium and large VAWTs. It faces many serious problems and cannot be popularized. Due to the extremely large inertia of the wind turbine, the required starting motor power must be very large, and even a reducer is required to amplify the torque. In addition, a high-power inverter is also indispensable, resulting in high cost and easy failure. If the generator also serve as the starter motor, it would be an engineering difficulty for the motor to have both low-speed high-torque and high-speed efficiency. Therefore, using the method in this video only requires a small-power starting motor to drive the rotor instead of the entire wind turbine, and the starting device is independent of the generator to make the system simpler. see this => ua-cam.com/video/9AdpggaOfF0/v-deo.htmlsi=s8PNT0CXYeIHj3ZX
@@SmartServo_org Thanks for the reply. I'm well aware of stated points and also of the problems , regarding producing wind powered energy in large scale (I mean , beyond home/small business use).
People tend to be very interested in physical efficiency of the system(s) (in this case wind turbine) , but they often forget cost efficiency. Although airfoil wind turbines are amongst most physically efficient turbines (given the right average wind conditions , at given location , besides duct-ed/venturi wind turbines) , those are amongst most expensive to manufacture (especially large ones with curved , or helical blades).
This idea with Magnus effect starters isn't bad and may give better results (quicker start) if the rotors are further away from the turbine shaft therefore increasing torque (not sure about effect on overall efficiency of the turbine , some tests needed) , but I still think that servo regulated flaps on the leading edge may work just as well (though with added complexity in a production of the blades). I just prefer simple mechanical solutions , over high tech ones.
Also , there is possibility to put multiple starter motors within the base of the turbine (attached to the shaft via big diameter gear) which would reduce required power for starter motors (lower torque/high speed motors) and may be used as mechanical brake rotor , in case of excess wind. It would insure better accessibility for maintenance and probably increase work longevity of those motors (again , more cost upfront for building a base , but there will be no interruption of turbine production , during the maintenance). It is all trade offs .
Anyway , there are many technical solutions for producing large wind turbines , as long as governments are willing to give incentives to the investors , until something else comes into the fashion (I mean , energy production wise - related to the governments) . I'm more proponent of smaller decentralized systems.
You have good idea anyway !
this is pretty cool
thanks !
Why not make "open Wing-profiles"! Same as the Darrius type but half sized in up and down to put the horrizotal wings on! No nothing in slowing the Darrius VAWT!
I'm not sure what you are describing, it would be nice to provide some links to photos or documents.
Too bad not enough companies are interested in wind energy. In some places where the winds are constant and strong, these would be ideal energy production devices. But if they were ever produced, the manufacturer would price the things as much as a 5 series BMW.
As far as I know, there are many companies interested in wind energy, but they cannot provide a good product to satisfy the market.Vertical axis wind turbines currently on the market are notorious and I try to come up with a new way to change that.