双Buck逆变器模型预测电流控制的研究  

Research on Model Prediction Current Control Based on the Dual-Buck Inverter

作　　者：李阳[1] 洪翌晨 卢志钢[2] Li Yang;Hong Yichen;Lu Zhigang(Concord College, Fujian Normal University, Fuzhou Fujian 350117, China;College of Electrical Engineering and Automation, Fuzhou University, Fuzhou Fujian 350116, China)

机构地区：[1]福建师范大学协和学院,福建福州350117 [2]福州大学电气工程与自动化学院,福建福州350116

出　　处：《电气自动化》2019年第4期43-45,103,共4页Electrical Automation

摘　　要：传统模型预测电流控制存在开关频率不固定、电流脉动较大等问题,使得系统输出性能受到影响。为此,研究一种基于双Buck全桥逆变器电压外环PI控制及电流内环模型预测电流控制的双环控制策略,且针对电感电流脉动较大问题,提出一种改进方案,即在单个采样周期内根据最小电流误差原则对不同开关状态的作用时间进行分配。仿真和试验结果表明,采用改进后的模型预测电流控制能有效减小电感电流脉动,提高输出波形质量。Traditional model prediction current control has some problems including unfixed switching frequency and serious current pulsation, thus affecting system output performance. In such a context, this paper presented a dual-loop control strategy based on the outer ring PI voltage control and inner ring current control of the dual-Buck full-bridge inverter. Furthermore, in view of serious inductive current pulsation, it proposed an improvement scheme, namely, in the single sampling period, action time of different switching status was assigned in the principle of minimum current error. Simulation and test results indicated that the improved model prediction current control could effectively reduce conductive current pulsation and improve output waveform quality.

关 键 词：双Buck全桥逆变器 双环控制 PI控制 模型预测电流控制 电流脉动 

分 类 号：TM464[电气工程—电器]