带LC滤波器的逆变器双环控制改进策略研究  

Study on Improving Strategy of the Double Loop Control of the Inverter with LC Filter

作　　者：周再游 文中[1] 许维忠 陈焰发 饶希达 

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]宜昌电力勘测设计院,湖北宜昌443002

出　　处：《电气开关》2015年第2期69-72,75,共5页Electric Switchgear

摘　　要：从逆变器的模和控制入手,针对电容电流(电感电流内环)、负载电压外环的双PI控制存在的缺点,提出了电流内环采用电感电流瞬时反馈和负载扰动前馈补偿相结合的PR控制改进策略,并对此改进的双环控制策略建立了逆变器的控制模型,最后根据逆变器的控制模型,构建了单相电压型PWM逆变器的simulink仿真模型,对SPWM电压电流双环控制系统模型进行了仿真分析,结果表明:系统设计合理,改进控制策略效果满意。Starting with the model and control of the inverter, for the shortcomings of capacitance current （ internal loop of inductance current） and double PI control of ex^enal loop of load voltage, propose that the internal loop of current a- dopts PR control imprrving strategy of inductance current instantanus feed back combined with load disturbance feed for- ward compensation, and set up the control model of the inverter of improved double loop contral strategy for this. Finally, according to the control model of the inverter, structure simulink simulation model of a single phase voltage PWM invert- er. Simulaion analysis of SPWM voltage current double loop control system model is carried out. The result shows the system design is proper and the improved control strategy is fine.

关 键 词：逆变器 电感电流内环 负载扰动前馈 PR控制 建模仿真 

分 类 号：TM464[电气工程—电器]