Phase-shifted chaotic SVM for harmonic performance improvement in paralleled voltage-source inverters fed PMSM drive

Abstract

This paper proposes and studies the phase-shifted chaotic space vector modulation (SVM) scheme for harmonics performance improvement in paralleled voltage-source inverters fed permanent magnet synchronous motor (PMSM) drive. By using the proposed scheme, the current harmonics around the switching frequency and some of its multiples in PMSM are eliminated. Besides, the peaky harmonics around all multiples of switching frequency are spread out such that the peaky harmonics are further suppressed with the irregular switching frequencies. The experiments are given to verify the performance of the proposed scheme in this paper.