Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Analysis of Phase Current Ripple and Torque Ripple of a 6-Phase PMSM Controlled by Interleaved PWM
Authors Won-Jin Jang ; Seong-Hoon Kim ; Bo-Sung Jun ; Hag-Wone Kim ; Kwan-Yuhl Cho
Page pp.305-315
ISSN 1229-2214
Keywords 6-phase PMSM; Interleaved PWM; Torque ripple reduction; Decoupled VSD
Abstract In this paper, phase current ripples and torque ripples of six-phase PM synchronous motor controlled by interleaved PWM are analyzed. The cause of the increase of phase current ripple in the interleaved PWM was mathematically analyzed based on the mutual inductance of stator windings and effective voltage vector. Simulation and experiment verified that the DQ current ripple and torque ripple can be reduced by interleaved PWM control. The FFT analysis of torque waveform confirmed that the magnitude of harmonic torque corresponding to double the PWM frequency was reduced.