基于单周期控制的快速响应PFC变换器研究  

Research on one-cycle control of power factor correction converter with fast dynamic response

作　　者：黄超[1] 林维明[1] 张强[1] 

机构地区：[1]福州大学电气工程与自动化学院,福建福州350108

出　　处：《电工电能新技术》2014年第1期42-46,共5页Advanced Technology of Electrical Engineering and Energy

基　　金：福建省自然科学基金资助项目(2011J01294)

摘　　要：提出了一种基于负载电流前馈与单周期控制技术相结合的快速负载动态响应功率因数校正(PFC)变换器控制策略。负载电流信号与传统输出电压反馈信号相乘并作为单周期控制载波信号,保证了PFC变换器具有快速的负载瞬态响应。此外,论文设计了两种自适应输出电流纹波补偿方法,有效抵消了负载电流前馈引入的输出二次纹波,减少了稳态下输入电流畸变。最后,基于单相Boost PFC电路,通过仿真与实验验证了所提控制方法的优越性。A novel strategy of One-Cycle Control （OCC） technique combining with load current feedforward control for power factor correction （PFC） converter with fast load dynamic response is proposed in this paper. A load feedforward control loop parallel with the output voltage feedback control loop is added by a multiply unit. The feedforward signal is multiplied with the output voltage feedback signal and the output signal becomes the carrier wave of OCC modulator, which significantly improves the dynamic response of the converter due to load variation. Besides, two compensation methods of adaptive output current ripple are designed to offset the second line harmonic of output current signal, which reduce the distortion of the PFC converter input current in steady state. At the end, based on single-phase Boost PFC converter, the simulations and experimental results verified the feasibility and superiority of the proposed control approach.

关 键 词：功率因数校正 单周期控制 负载动态响应 纹波补偿 

分 类 号：TM461[电气工程—电器]