: PM Generator in Reverse

[infinite_gbps]

URGENT: PM Generator in Reverse

If you have a permanent magnet generator being driven by a turbine and the generator outputs some power level, how would the configuration of a generator change if it is suppose to drive a turbine's compressor stage with the same power?

I think the meaning is how would one change the generator to a motor that supplies the same output power.

I just don't understand applying electrical power to the stator would make a PM rotor move.

Any details would be appreciated.

 

[Bob S]

"Generators" with permanent magnet (PM) rotors run well as dynamos but not as motors. The dynamo would require some way of commutating (reversing) the stator current depending on the rotor angle. This is done in BLDC (brushles dc) motors that either have a Hall Effect sensor, or use a stator coil induced voltage (from rotor) sensor to commutate the stator current.
Bob S

 

[oswaler]

I would like to clarify that a permanent magnet generator (PMG) and a permanent magnet motor (PMM) are two different devices. A PMG converts mechanical energy into electrical energy, while a PMM converts electrical energy into mechanical energy. Therefore, the configuration of a PMG cannot be changed to drive a turbine's compressor stage with the same power, as it is not designed for that purpose.

In order to drive a turbine's compressor stage with the same power, a PMM would need to be used. This would involve changing the stator and rotor design, as well as the control system, to allow for the conversion of electrical energy into mechanical energy. Applying electrical power to the stator of a PMM would create a rotating magnetic field, which would interact with the permanent magnets on the rotor and cause it to rotate. This rotation would then drive the turbine's compressor stage.

It is important to note that the efficiency and power output of a PMM may differ from that of a PMG, as they are designed for different purposes. Therefore, it is crucial to carefully consider the specific requirements and limitations of the application before making any changes or modifications to the device.

I hope this clarifies the difference between a PMG and a PMM and provides some insight into the changes that would be necessary to convert a PMG into a PMM for the purpose of driving a turbine's compressor stage. If you require further details or have any other questions, please do not hesitate to ask.