倍压Boost-APFC变换器的改进型单周期控制  

Improved single-cycle control of double-voltage Boost-APFC converter

作　　者：蔡逢煌[1] 王武[1] 陈浩龙[1] 

机构地区：[1]福州大学电气工程与自动化学院,福建福州350116

出　　处：《电力自动化设备》2015年第10期121-126,共6页Electric Power Automation Equipment

基　　金：福建省自然科学基金资助项目(2013J01178)~~

摘　　要：阐述了单相倍压Boost有源功率因数校正(Boost-APFC)变换器拓扑的工作原理以及传统单周期控制算法的特点。基于电感电流混合导通模式的工作条件,并针对电感电流连续模式下的单周期算法在电流断续模式下的失效,提出了改进型单周期控制算法。该算法针对电感电流断续模式下存在的电感电流采样误差,引入电流修正系数对采样电流进行修正。同时,对单周期算法中的稳态部分进行改进,使其能够适用于电感电流混合导通的情况。改进型单周期控制算法能够使倍压Boost-APFC电路从轻载到满载的全功率范围获得较高的功率因数。基于PSIM仿真软件平台对控制算法进行了仿真,试制了4.8 k W的实验平台和控制板。仿真和样机实验结果均表明理论分析的正确性。The operating principle of single-phase double-voltage Boost-APFC（Boost Active Power Factor Correction） converter and the characteristics of traditional single-cycle control algorithm are described. As the traditional single-cycle control algorithm can be applied only in the continuous inductive current mode,an improved single-cycle control algorithm is proposed based on the operating conditions of hybrid inductive current modes,which applies a current correction coefficient to modify the sampling current for correcting the error of inductive current sampling in the discontinuous inductive current mode. The steady-state part of the traditional single-cycle control algorithm is improved to adapt for the hybrid inductance current modes,which achieves a whole-range higher power factor of the double-voltage Boost-APFC converter. Results of the simulation based on PSIM and the experiment based on a 4.8 k W prototype show the validity of theoretical analysis.

关 键 词：有源功率因数校正 变换器 改进型单周期控制 倍压Boost 数字控制 

分 类 号：TM46[电气工程—电器]