基于模型预测电流控制的双PWM变换器协调控制研究  

Research on Coordinated Control of Dual PWM Converter Based on Model Predictive Current Control

作　　者：屠立忠 吴浩然 洪岑岑 李家强 朱睿 Tu Lizhong;Wu Haoran;Hong Cencen;Li Jiaqiang;Zhu Rui(School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing Jiangsu 211167,China)

机构地区：[1]南京工程学院电力工程学院,江苏南京211167

出　　处：《电气自动化》2022年第2期35-37,40,共4页Electrical Automation

摘　　要：针对传统电流环比例积分(proportional integral,PI)控制双PWM变换器动态响应慢和电流谐波含量高等问题,提出一种基于模型预测电流控制的协调控制策略。首先,分析整流侧PWM变换器的预测模型。然后,负载侧PWM变换器的输入电流前馈给整流侧PWM变换器电流环,在两侧能量流动的过程中实时调节电流的参考值。结果表明:采用模型预测电流控制的协调控制策略,改善了双PWM变换器系统的动态性能。最后,通过仿真搭建了以异步电机为负载的双PWM变换器改进的协调控制策略模型。验证了控制策略的优越性。Aiming at the slow dynamic response and high current harmonic content of traditional current loop proportional integral(PI)control on dual PWM converters,a coordinated control strategy based on model predictive current control was proposed.The whole idea was as follows:firstly,analyze the prediction model of the PWM converter on the rectifier side;then,the input current of the load-side PWM converter was fed forward to the current loop of the rectifier-side PWM converter,and the reference current value was adjusted in real time during the energy flow on both sides.The results show that the use of a coordinated control strategy of model predictive current control improves the dynamic performance of the dual PWM converter system.Finally,an improved coordinated control strategy model of the dual PWM converter with asynchronous motor as the load was set up through simulation.It verifies the superiority of the control strategy.

关 键 词：双PWM变换器 模型预测 负载电流前馈控制 双矢量控制 协调控制 

分 类 号：TM461[电气工程—电器]