Analysis of dynamic characteristics variation of BLDC motor according to PWM modes

PWM 모드에 의한 BLDC 전동기의 구동 특성 변화 해석

  • Published : 2003.07.21

Abstract

This paper presents characteristics analysis of brushless DC motor(BLDCM) which is driven by four types of PWM mode. The Phase current, radial forte and torque ripples are generated differently at each PWM mode. So they have different influences on motor characteristics. In this paper, we analyzed characteristics of BLDCM using time-stepped voltage source finite element method. The effect of four types of PWM mode had been confirmed by comparing each phase current and torque ripple waveform. The compared simulation result is useful to select a better PWM mode.

Keywords