Stability Study of Battery Simulator Based on Multisampling Technique

Abstract

In order to realize the stable output of the battery simulator circuit, reduce the control delay introduced in the PWM rectifier circuit of the digitally controlled battery simulator, optimize the dynamic performance of the system, and reduce the system instability caused by the harmonic resonance of the output current caused by the filter. In view of the above problems, to improve the control bandwidth of the battery simulator and reduce the delay time, this paper proposes the introduction of a multisampling control strategy in the control technique of the PWM rectifier circuit-based battery simulator, which reduces the delay time of the system by increasing the frequency of sampling, reduces the effect of harmonics in the circuit, and improves the stability of the system. This experiment verifies the effectiveness of the method in the simulation results conducted through a three-phase PWM rectifier.