Hi all,
I am a current owner of a 10kw Wind Turbine, that relies on passive yaw (i.e just the force of the wind to orientate the turbine into the correct position)
The turbine functions well but in high winds suffers from "buffeting". The manufacturer had fitted a mechanical yaw damper, consisting of some spring loaded nylon pads to provide a resitive force but I feel an electronic solution would be better.
The turbine output is 3 phase, variable voltage, variable phase, 0 - 400v, which I take to mean a constant current op of 25A (0 - 10kW ??), where op voltage is directly proportional to rotor speed.
My idea is to have an EM brake that is activated when the turbine reaches a significant rotor speed (I'm basing it on half power so 200v), therefore holding the turbine in its current orientation until the wind speed drops, thus lowering the op voltage and releasing the brake.
With my basic electronic knowledge and purely using off the shelf parts I have come up with the following solution
Turbine output will (as well as being attached to the main load, inverters etc to pass to the grid) be put into a 3 phase bridge rectifer, so will now have dcv proportional to rotor speed. DCV then fed into buck DC-DC convertor 200-400vin giving 24vout, which feed em brake. (diagram and links to components attached.
Am I right in thinking that this would work as described, i.e. until turbine output reaches 200v there will be no op from buck convertor, so em brake will not be applied, then once it reaches >200v, buck will op 24v and activate brake.
Just to clarify I am no way connected to the turbine manufacturer and am doing this purely to make my turbine more efficient..
Block Diagram
Bridge Rectifier
Buck Convertor
EM6 EM brake
Any info would be greatly appreciated. Please talk in basic language.
Many thanks
John
I am a current owner of a 10kw Wind Turbine, that relies on passive yaw (i.e just the force of the wind to orientate the turbine into the correct position)
The turbine functions well but in high winds suffers from "buffeting". The manufacturer had fitted a mechanical yaw damper, consisting of some spring loaded nylon pads to provide a resitive force but I feel an electronic solution would be better.
The turbine output is 3 phase, variable voltage, variable phase, 0 - 400v, which I take to mean a constant current op of 25A (0 - 10kW ??), where op voltage is directly proportional to rotor speed.
My idea is to have an EM brake that is activated when the turbine reaches a significant rotor speed (I'm basing it on half power so 200v), therefore holding the turbine in its current orientation until the wind speed drops, thus lowering the op voltage and releasing the brake.
With my basic electronic knowledge and purely using off the shelf parts I have come up with the following solution
Turbine output will (as well as being attached to the main load, inverters etc to pass to the grid) be put into a 3 phase bridge rectifer, so will now have dcv proportional to rotor speed. DCV then fed into buck DC-DC convertor 200-400vin giving 24vout, which feed em brake. (diagram and links to components attached.
Am I right in thinking that this would work as described, i.e. until turbine output reaches 200v there will be no op from buck convertor, so em brake will not be applied, then once it reaches >200v, buck will op 24v and activate brake.
Just to clarify I am no way connected to the turbine manufacturer and am doing this purely to make my turbine more efficient..
Block Diagram
Bridge Rectifier
Buck Convertor
EM6 EM brake
Any info would be greatly appreciated. Please talk in basic language.
Many thanks
John