Title :
Eddy-current losses in the permanent magnets of a PM machine
Author :
Polinder, H. ; Hoeijmakers, M.J.
Author_Institution :
Delft Univ. of Technol., Netherlands
Abstract :
A gas turbine driven, high-speed, high-efficiency generator system intended for use in series-hybrid vehicles is developed. It consists of a permanent-magnet (PM) generator and a rectifier. The eddy-current loss in the magnets of the high-speed PM generator may be problematic. Therefore, a model of the PM machine including this loss in the magnets due to the time harmonics of the stator currents is introduced and verified. This loss can be represented by magnet loss resistances in the equivalent circuits. It can be decreased by using smaller magnets or by using sinusoidal stator currents
Keywords :
permanent magnet generators; PM machine; eddy-current losses; equivalent circuits; gas turbine driven generator system; high-efficiency generator system; high-speed generator system; locked rotor tests; magnet loss resistances; permanent magnets; permanent-magnet generator; rectifier; series-hybrid vehicles; sinusoidal stator currents; stator currents; time harmonics;
Conference_Titel :
Electrical Machines and Drives, 1997 Eighth International Conference on (Conf. Publ. No. 444)
Conference_Location :
Cambridge
Print_ISBN :
0-85296-696-2
DOI :
10.1049/cp:19971054
