Abstract:

A space vector modulation method is designed for eliminating harmonic pollution and improving power factor. Based on fixed switching frequency, this SVPWM (Space Vector Pulse Width Modulationis) is able to keep an uncontrolled maximum current. The control principle of this SVPWM is disclosed, and mo
dules for simulating algorithm and control are designed with Matlab. Results of simulation tests have shown that this modulation method can improve the
 utilization rate of system's DC (Direct Current) voltage and reduce the switching loss, demonstrating a good dynamic quality and a reduced total harmonic distortion.

Key words: rectifier, space vector, pulse width modulation