平均电流型Boost PFC非线性现象分析  

Nonlinear Phenomena Analysis in Boost PFC Converter with Average-current-mode Control

作　　者：文杰[1] 翟程远[1] 陈德荣[1] 荆江平[2] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240 [2]东南大学电气工程学院,南京210096

出　　处：《电测与仪表》2011年第12期1-4,共4页Electrical Measurement & Instrumentation

摘　　要：针对PFC电路中的非线性现象,本文以输出电容和负载电阻为分岔参数,UC3854为控制芯片,在saber软件中对平均电流型Boost PFC电路进行了仿真,仿真结果表明在分岔参数变动的情况下,电路可能会出现慢时标分岔、混沌等非线性现象。最后,利用输出电压和电感电流之间的相图对该现象进行了分析。本文的研究对PFC电路的稳态设计和全面理解其动力学行为具有重要意义。In order to analyze the nonlinear phenomenon in PFC circuit, the output capacitance and load resistor are appointed as bifurcation parameters when using saber to simulate the circuit which is based on the IC UC3854. The results show that the changes of the bifurcation parameters may result in slow-scale bifurcation and chaos phenomena . Finally the phase curves of the output voltage and inductor current are used to analyze the slow-scale nonlinear phenomena. The research is significant to the designing of steady-state PFC circuit and comprehensive understanding of the dynamic behavior.

关 键 词：功率因数校正 平均电流控制 慢时标分岔 混沌 

分 类 号：TM46[电气工程—电器]