Darrieus wind turbine load testing, power generation, PWM regulation

This experiment demonstrates load testing of a Darrieus wind turbine. Use the Nedic motor to start the turbine and act as a generator after starting.
For more information,refer to：smartservo.org/...
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[@joseahatzinespinozainowe9958]

Hi, ive been following through this series of your experimentation, congrats on the regulated power output to mantain the speed of the rotor! by the way, it is known that on winds of 4m/s or lower there is bareley any energy, so it would be interesting to see how your turbine performs on higher windspeeds with the generator pluged, and also to see if they TPR goes up since the tipical optimal darrieus performance is with TPR above 3 or 4.
Anyways i'm looking forward to see how you continue to develop your project! Really nice content!

[@SmartServo_org]

Thank you for continuing to follow my channel. Regarding higher wind speed, I cannot achieve it in my simple wind tunnel. I'm trying to figure out how to move these devices outdoors for testing,

[@justtinkering6713]

Have you ever looked into a "Sharp Cycloturbine". Variable pitch blades, in the Darrieus H vawt style. It's a great turbine.

[@SmartServo_org]

Variable pitch blades can achieve self-starting and are highly efficient. However, the mechanism is complex, heavy, and prone to wear due to high-speed rotation.

[@justtinkering6713]

You can make the darrieus turbine self-start by setting the blades at an AOA of about 4- 6 Degrees.

[@SmartServo_org]

But this will reduce efficiency

[@justtinkering6713]

@@SmartServo_org it will also reduce complexity.

[@kreynolds1123]

I sugest keeping it simpler and make a darrious/savonious hybrid turbine because the savonous blades have good self starting capabilities and darious turbines have good efficiency and a hybrid of tge two has the darious sweep a much larger area.
Assuming peek performance of darious turbine is with TSR at 4, and savonious at maybe 0.8, then the savonious tip radius should be 0.8/4 = 1/5th the darious turbine radious.
Adjust darious radius up or down to further optimize.

[@SmartServo_org]

Thank you for your suggestion. Using drag blades is the traditional way to start the Darrieus wind turbine and is no longer worth researching. In fact, there is a price to pay for starting through drag blades, which reduces the efficiency of the lift blades. => ua-cam.com/video/qAYjPSDGPo4/v-deo.htmlsi=k7pk7PRDiFB8X5u7&t=33

[@kreynolds1123]

@@SmartServo_org the magnus rotors and their abilities were interesting. But, I don't see the necessity for "high torque" just the general capability to self the start.
Yes, the radius effects the tip speed, in a given wind. as your video demonstrated and my comments point out, generally in a given wind, a larger diameter drag turbine will rotate slower and that an even smaller diameter turbine will spin faster in the same given wind. I pose that had your video tested an even smaller diameter drag turbine, it's possible to get the whole turbine spinning faster than a purely Darious turbine in the same given wind speed.
Lastly, for a little more outside the box thinking, pardon the pun, you could put the drag cross section of the turbine outside the lift cross section.

[@BigKokka]

is this a squirrel-cage motor?

[@SmartServo_org]

I don’t think so, it should be a BLDC motor.