PWM逆变器的建模与双环控制策略  

PWM Inverter Modeling and Double Cycle Control Strategy

作　　者：宗芝荣[1] 赵艳雷[2] 胡希同[2] 宋扬[2] 

机构地区：[1]淮北供电公司,安徽淮北235000 [2]山东理工大学电气与电子工程学院,山东淄博255049

出　　处：《电网与清洁能源》2009年第11期53-57,共5页Power System and Clean Energy

摘　　要：为准确分析有源逆变器的运行特点,根据系统控制策略的需要,在考虑了有源逆变器输出的基础上采用开关函数法建立了有源逆变器的开关周期平均模型。提出一种前馈加双环控制的控制策略,它的双环控制包括一个电感电流内环控制和一个瞬时电压外环控制。仿真结果显示该系统有很好的正弦波输出波形,快速的动态响应和高精度的输出电流。Based on the needs of system control strategy and the output of the active inverter, a switch function method was adopted to build the average model of switch cycle for the active inverter in order to accurately analyze operation characteristic of active inverter, a feed forward and double loop control strategy is put forward, its double control includes a inductor current inner loop control and instantaneous voltage outer loop control. The simulation result shows that the system can achieve good sinusoidal output waveform, fast dynamic response and high precision of output current.

关 键 词：开关函数法 开关周期平均模型 前馈补偿器 仿真 

分 类 号：TM743[电气工程—电力系统及自动化]