摘要
在dq0坐标系下建立了三相四线PWM整流器的状态空间平均模型,分析了非正弦输入电压对PWM整流器输入电流控制的影响,指出k次输入电压谐波将在输入电流中产生k次相应谐波。为抑制非正弦输入电压的影响,提出了基于SRF的dq0轴控制策略,实验结果表明,分析及采用的控制策略正确、有效。
In this paper, a mathematical model of 3-phase 4-wire PWM rectifier has been built in dqO coordinate firstly. then the influence of non-sinusoidal input voltage on input current control of PWM rectifier is analyzed. The conclusion is drawn that the corresponding k-order harmonic will be brought in the input current due to the k-order harmonic of the input voltage. In order to restrain the influence of non-sinusoidal input voltage, dq0 control strategy based on SRF is proposed, The experirnental results verify the control strategy to he right and valid.
出处
《水电能源科学》
北大核心
2009年第5期190-192,228,共4页
Water Resources and Power
