PWM整流器瞬时功率PI控制与电流解耦控制  

Instantaneous power PI control and current decoupling of PWM rectifier

作　　者：陈国璋[1] 卢泉[1] 卢子广[1] 

机构地区：[1]广西大学电气工程学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2011年第6期1023-1029,共7页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(50567001);广西教育厅科研项目(201012MS007)

摘　　要：为控制直流侧电压恒定,保证整流器单位功率因数运行,从能量守恒的角度,根据Lyapunov稳定性理论,提出一种新的瞬时功率控制策略,该控制策略包含一个PI控制器和负载电流前馈补偿,给出了瞬时功率控制应用PI控制器的理论依据,同时提出一种规范化极点配置电流解耦方案,解耦方法简单易行,实现d-q轴电流解耦。仿真结果验证了该方法的正确性和有效性。In order to keep the dc voltage constant and ensure unity power factor of the PWM rectifier,a novel instantaneous power control strategy for PWM rectifier based on Lyapunov stability theory is introduced from the point of view of the conservation of energy.The proposed strategy consists of a PI controller plus a feed forward compensation of the load current.And the theoretical basis for the PI application of the instantaneous power control approach is given.Meanwhile,a normal pole assignment for current decoupling control strategy is proposed.With this method,the d-q axis current decouple is realized easily.The simulation results have verified the proposed instantaneous power control strategy.

关 键 词：PWM整流器 瞬时功率控制 LYAPUNOV理论 电流解耦 

分 类 号：TP461[自动化与计算机技术]