考虑电容电压补偿的UPS系统中逆变器容错控制  

Fault-tolerant Control of Inverter in UPS System Considering Capacitor Voltage Compensation

作　　者：鲍海波 钟志东 覃斌志 张兰 王愚 李江伟 BAO Haibo;ZHONG Zhidong;QIN Binzhi;ZHANG Lan;WANG Yu;LI Jiangwei(Binyang Power Supply Bureau,Guangxi Power Grid Co.,Ltd.,Nanning 530400,China;Nanning Power Supply Bureau,Guangxi Power Grid Co.,Ltd.,Nanning 530400,China)

机构地区：[1]广西电网有限责任公司南宁宾阳供电局,广西南宁530400 [2]广西电网有限责任公司南宁供电局,广西南宁530000

出　　处：《电工技术》2020年第5期12-15,18,共5页Electric Engineering

基　　金：广西电网有限责任公司科技项目(编号GXKJXM 20180433)。

摘　　要：目前,往往采用基于三相四开关的逆变器容错控制实现逆变器故障后的容错运行。另外,在逆变器容错模式下,直流母线上下两电容电压很难相等,电容电压偏移会降低直流电压的利用率,影响逆变器的正常工作。模型预测控制作为一种新型的计算机控制算法,具有建模简单、无需PI参数调节、多目标控制等优点,因此研究了在考虑电容电压补偿情况下基于模型预测的逆变器容错控制。仿真结果验证了提出的容错控制方法的有效性。At present,the fault-tolerant control of inverter based on three-phase four-switch is often used to realize the fault-tolerant operation after an inverter fault.In fact,in the fault-tolerant mode of inverter,the upper and lower capacitance voltages of DC bus are difficult to be equal,and the capacitance voltage offset will reduce the utilization rate of DC voltage and affect the normal operation of the inverter.As a new type of computer control algorithm,the model predictive control has many advantages of simple modeling,no need of PI parameter adjustment,and multi-objective control.Therefore,the fault-tolerant control of inverter based on model prediction under the consideration of capacitor voltage compensation is studied.Simulation results verify the effectiveness of the proposed fault-tolerant control method.

关 键 词：UPS 逆变器 模型预测控制 容错控制 

分 类 号：TN702[电子电信—电路与系统]