Patent ID: 8575773

Claim:
A method for operating an electromechanical generator, comprising: determining a magnetic field reference parameter based on an electromagnetic power reference representing a desired output of the electromechanical generator, determining a scaling factor for adjusting an air-gap magnetization level of the electromechanical generator to reduce loss in operating the electromechanical generator, wherein determining the scaling factor includes determining the scaling factor for which the determined power loss is minimum from among a plurality of scaling factors and comprises measuring the generator temperature for the scaling factors in the order from lowest scaling factor to highest scaling factor wherein when the generator temperature of a scaling factor is measured to be higher than the generator temperature measured for the previous scaling factor, the determining process is stopped and the previous scaling factor is determined as the scaling factor for which the determined power loss is minimal among the scaling factors, modifying the magnetic field reference parameter with the scaling factor; and operating the electromechanical generator based on at least the modified magnetic field reference parameter.