改进单周期控制中间电压的单相电压源整流器

Research on Single-phase Voltage Source Rectifier Using Modified Medium Voltage of One Cycle Control

单相电压源整流器(VSR)可用作固态变压器的前级AC/DC变换器、单相有源电力滤波器,也可代替单相有源功率因数校正器。提出一种单相VSR的控制策略,即采用电压平方外环、直接功率控制中环和单周期控制内环,这3个环节均具有快速响应的特点。在负载突变情况下,整个系统的响应速度大大提升,网侧电流、输出电压响应较快,效果令人满意。上述结论得到了Matlab/Simulink仿真分析和实验结果的验证。

Single-phase voltage source reetifier（VSR） can be used as an AC/DC pre-converter, an actice power filter or an active power factor corrector.This paper presents a VSR control strategy, using the combination of a squared voltage outer loop, a direct power control middle loop and a single-cycle control inner loop.The response speed of the whole system is highly improved in case of the suddenly-changed loads which reflects a satisfactory effect.The above conclusions are proved by Maflab/Simulink and the experiments.