What is the speed of direction driven PMSG (permanent Magnet Synchronous Generator) that are commercially available? Is the construction of low speed machine same as high speed machine?
With increased load and the torque angle(deltta) the synchronous speed, fall to 3 to 4 % of no load synchronous speed, or could be said, 3 to 4 % regulation........
The speed of the PMSG is depending on the rated power. For large direct driven PMSG the speed is low around 100 rpm. However for PMSG with gearbox, the speed is high for example 1500 rpm.