MODELLING AND SIMULATION OFSVPWM INVERTER FED PERMANENTMAGNET BRUSHLESS DC MOTOR DRIVE

[摘要] Variable speed drives with Pulse Width Modulation are increasingly applied in many new industrial applications for more efficient performance. Recently, developments in power electronics and semiconductor technology have lead to widespread use of power electronic converters in the power electronic systems. A number of Pulse width modulation (PWM) schemes are used to obtain variable voltage and frequency supply from a three-phase voltage source inverter. Among the different PWM techniques proposed for voltage fed inverters, the sinusoidal PWM technique has been popularly accepted. But there is an increasing trend of using space vector PWM (SVPWM) because of their easier digital realization, reduced harmonics, reduced switching losses and better dc bus utilization. This paper focuses on step by step development of SVPWM implemented on a PMBLDC motor. Simulation results are obtained using MATLAB/Simulink environment for effectiveness of the study.

[关键词] Permanent Magnet Brushless DC Motor;Pulse width modulation (PWM);Sinusoidal PWM;Space Vector PWM;Voltage Source Inverter.