直接功率控制的单相功率因数校正器  

Single- phase Power Factor Corrector under Direct Power Control

作　　者：唐思文[1] 李印龙[1] 杨喜军[1] 

机构地区：[1]上海交通大学电气工程系,上海200240

出　　处：《电气自动化》2014年第1期70-72,共3页Electrical Automation

基　　金：国家自然科学基金(60934005);2011年闵行区技术创新项目-企校合作专项(2011MH101)支持

摘　　要：传统的双闭环控制单相有源功率因数校正器(APFC)中,电压外环可以调节输出直流电压,电流内环可以调节输入电流波形。提出基于电压平方外环的APFC直接功率控制策略,电流内环仍然采用PI调节器,从而使得单相APFC具有对输出功率变化快速响应的优点,但是在负载突变情况下,也带来了输入电流突变而引起过流的现象,需要对电压平方外环和直接功率控制环进行阻尼作用,在快速响应与稳定运行之间获得平衡。上述结论得到了MATLAB/Simulink仿真分析结果的验证。In the conventional single-phase active power factor corrector （APFC） controlled by two closed-loops, the voltage outer loop can adjust output DC voltage, while the current inner loop ean adjust input current waveform. This paper presents a control strategy using direct power control, based on the voltage squared outer loop. The PI regulator is still utilized in the current inner loop so that the single-phase APFC has the advantage of quick response to the changing output power. But in the case of sudden load variations, abrupt iluetuations of the input current will cause over-current. Thus, damping is needed in the voltage squared outer loop and the direct power control loop to balance rapid response and stable operation. The simulation results by means of MATLAB/SIMULINK prove the above conclusions.

关 键 词：有源功率因数校正 双闭环控制 电压平方外环 直接功率控制 快速响应 

分 类 号：TP217.3[自动化与计算机技术—检测技术与自动化装置]