基于数控电感的PWM整流器网侧电流改善研究

Study on improving AC-side current of PWM rectifier based on programmable inductor

基于PSCAD软件建立了的仿真模型,提出了利用数控电感替代传统的电感线圈,使得电感值在线可调。仿真结果表明,合理地选择数控电感参数范围和调整增量后,既可以较好地实现电流过零点的快速跟踪,又可以达到抑制电流峰值点时谐波电流的目的。该方法在改善电能质量方面具有一定的实用价值。

Its simulation model is built up based on PSCAD software. Inductor coil can be substituted for Programmable in- ductor. Simulation results show it is necessary that inductor and its increment should be in reasonable range, and not only fast transient response of current crossing zero, but also inhibiting harmonic peak current. The method possesses some practical values at the aspect of improving power quality.