电力系统组合式三相逆变换器电压稳定性研究  

Study of Voltage Stability of Power System Modular Three-Phase Inverter

作　　者：李彦斌[1] 张安堂[1] 冯丹[1] 

机构地区：[1]空军工程大学防空反导学院,陕西西安710051

出　　处：《计算机仿真》2015年第11期156-160,共5页Computer Simulation

摘　　要：针对三相逆变电源运行中不平衡负载出现时逆变器输出电压波动较大、稳态精度差的问题,为提高电力系统的稳定性,提出了一种三环PI控制策略。逆变器的输出电压采用三环PI控制,在电压电流双环PI控制策略的基础上加入了电压有效值反馈外环,并利用FPGA设计和实现了逆变器的三环PI控制。通过Simulink和QuartusⅡ建模仿真和实验研究,验证上述控制策略的正确性,实现了对逆变器输出电压的快速精确控制,提高了逆变器输出电压的稳定性。In view of the three-phase unbalanced load in the operation of the inverter power supply when the inverter output voltage fluctuation is bigger, the problem of poor steady precision, a three-ring PI control strategy is proposed. Three-loop PI control is used to control the inverter output voltage, an outer loop of the RMS voltage feed- back is added to the dual-loop PI control strategy with the voltage and current loops, which takes advantage of FPGA design and implementation of the inverter three-loop PI control. Through the Simulink and Quartus II modeling simulation and experimental research, the results show that the control strategy described in this article has fast and precise control of the inverter output voltage, and improves the stability of the inverter output voltage.

关 键 词：组合式三相逆变器 不平衡负载 三环控制 

分 类 号：TM46[电气工程—电器]