DIRECT POWER CONTROL OF THREE-PHASE PWM RECTIFIER BASED ON NEW SWITCHING TABLE

Abstract

This paper proposes a new switching table to improve the direct power control of three-phase PWM rectifier and achieve better performance in terms of power ripple reduction and dynamic response. This approach, which is based on the change of active and reactive power, can select the optimal rectifier voltage to overcome the power ripple and eliminate the harmonic current, and therefore reduce the total harmonic distortion of the line current and improve the power factor. To test this approach, a simulation platform using Matlab/Simulink was built. Simulations have been made to verify the effectiveness of the presented approach.

Keywords

• Direct power control
• Power ripple
• PWM rectifier
• Switching table
• Unity power factor