并网逆变器间接电流解耦控制策略的研究  

Research on Indirect Current Decoupling Control Strategy for Grid-Connected Inverter

作　　者：陈潼[1] 赵荣祥[1] 

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《电力电子技术》2006年第3期8-10,16,共4页Power Electronics

摘　　要：针对传统并网逆变器相位幅值控制(PhaseAmplitudeControl,PAC)存在的控制灵活性差、误差较大的问题,提出了一种改良的基于相位幅值解耦控制(PhaseandAmplitudeDecouplingControl,PADC)的间接电流控制策略。该策略通过在工业标准允许范围内牺牲功率因数!值,有效地解决了PAC电压幅值和相位两大控制参数的耦合问题,使其可以分别独立地控制,从而提高了控制的稳定性和灵活性,并降低了由电网电压突变、谐波和电感器等效电阻动态变化造成的静态误差。实验结果证明了该控制策略的有效性,且由于实现简单,具有较强的应用价值。To solve the problems of bad control flexibility and big error under traditional Phase-Amplitude Control （PAC）,this paper proposes an improved indirect current control strategy based on Phase and Amplitude Decoupling Control （PADC） for grid-connected inverter.Through the sacrifice of power factor within industrial standard range,this strategy implements the decoupling control of phase and amplitude and effectively reduces the errors caused by grid voltage break, harmonics and the change of inductor＇s equivalent impedance.Therefore it improves the control stability and flexibility.Experimental results verified the validity of the proposed strategy.Since it could be implemented easily,it has great prospect in industrial application.

关 键 词：逆变器/解耦控制 相位幅值控制 并网逆变器 倍频式正弦脉宽调制 

分 类 号：TM464[电气工程—电器]