The Effect of PWM on Rotor Eddy-Current Losses in High-Speed Permanent Magnet Machines

Author

Jumayev, S. ; Merdzan, M. ; Boynov, K.O. ; Paulides, J.J.H. ; Pyrhonen, J. ; Lomonova, E.A.

Author_Institution

Dept. of Electr. Eng., Eindhoven Univ. of Technol., Eindhoven, Netherlands

Volume

51

Issue

11

fYear

2015

Firstpage

1

Lastpage

4

Abstract

High-speed permanent magnet machines, supplied by pulsewidth modulation (PWM) voltage source inverters, operate with distorted stator currents. Harmonics present in these stator currents deteriorate the machine performance by generating losses. Mostly, these losses are following the machine design using a transient finite-element model. The precise measurement of these rotor eddy-current losses is extremely difficult, hence, only a few papers provide convincing comparisons between predictions and measurements. This paper presents a fast and precise analytical approach, verified with measurements, to consider rotor losses of machines, supplied by PWM voltages, already during the design procedure.

Keywords

PWM invertors; eddy current losses; finite element analysis; harmonics suppression; permanent magnet machines; rotors; stators; PWM effect; distorted stator current; harmonics suppression; high-speed permanent magnet machine design; pulsewidth modulation; rotor eddy current loss; transient finite element model; voltage source inverter; Current measurement; Harmonic analysis; Inverters; Loss measurement; Mathematical model; Pulse width modulation; Rotors; High-speed PM machines; High-speed permanent magnet (PM) machines; PWM losses; pulsewidth modulation (PWM) losses; rotor eddy-current losses;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2015.2438637

Filename

7115144