三相桥式全控整流电路反相序工作的仿真

Simulation of The working of Three-phase Bridge Controlled Rectifier in Negative Phase Sequence

三相桥式全控整流电路反相序工作是调试中常见状态。为了对此状态下整流电路的工作过程进行分析,采用Matlab/simulink软件对此进行了仿真。结果表明,在控制角(α)从0°到180°的增加过程中,反相序输出电压波形出现了反复,输出电压平均值(Ud)出现两次最大值。通过分析反相序对触发信号的影响,对此现象进行了解释,并得到Ud的计算公式。

Three-phase bridge controlled rectifier working in negative phase sequence is a common state in shakedown test .For analyzing the working state ,it is simulated by Matlab/simulink .The result shows that the output voltage wave appears repeatedly with the increase of the control angle （α） from 0＆#176;to 180＆#176; ,and the maximum output voltage average value（Ud） appears two times .It is explained by analyzing the effect of negative phase sequence to trigger signal ,and the formulation of Ud is found .