DC link current simulation of voltage source inverter with random space vector pulse width modulation

Abstract

Aiming at analysis complexity, a simulation model is built and presented to analyze and demonstrate the characteristics of the direct current (DC) link current of the three-phase two-level inverter with the random space vector pulse width modulation (SVPWM) strategy. The developing procedure and key subsystems of the simulation model are given in detail. Several experiments are done using the simulation model. The results verify the efficiency and convenience of the simulation model and show that the random SVPWM scheme, especially the random switching frequency scheme, can efficiently suppress the harmonic peaks of the DC link current.