摘要
针对三相PWM整流器多输入变量和多控制目标的复杂性,提出一种基于α-β静止参考坐标系的双单输入单输出(DSISO)模型,将PWM整流器等效为两个与传统单相升压变换器类似的电路结构,简化了对三相PWM整流器的分析。基于该模型,推导了小信号模型,建立了三相PWM整流器从控制到输出的传递函数,并且给出了电压控制器的设计方法。实验结果验证了DSISO模型及控制策略的有效性。
In order to simplify the complicated structure of multiple input variables and multiple control objectives for threephase PWM rectifier, a novel DSISO （dual single-input single-output） model based on α-β stationary reference frame is proposed and the three-phase PWM rectifier is equivalent to two traditional single-phase boost converters, which is easier to analyze threephase PWM rectifier. Based on this model, the small signal model is derived, the control-to-output transfer function is deduced, and the design principle of voltage controller is given. Experimental results confirm the validity of the DSISO model and the control strategy.
出处
《电子技术应用》
北大核心
2009年第10期87-90,95,共5页
Application of Electronic Technique
