临界连续导通模式Boost功率因数校正变换器的工频调节控制方法  

Critical conduction mode Boost PFC converter with line cycle adjusting control technique

作　　者：罗欢 许建平[1,2] 何大印[1,2] 沙金 LUO Huan;XU Jian-ping;HE Da-yin;SHA Jin(School of Electrical Engineering,Southwest Jiaotong University,Chengdu 611756,China;Ministry of Education Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle,Southwest Jiaotong University,Chengdu 611756,China)

机构地区：[1]西南交通大学电气工程学院,成都611756 [2]西南交通大学磁浮技术与磁浮列车教育部重点实验室,成都611756

出　　处：《电机与控制学报》2020年第11期16-26,共11页Electric Machines and Control

基　　金：国家自然科学基金(61901395)。

摘　　要：提出了一种电感电流临界连续导通模式(critical conduction mode,CRM)Boost功率因数校正(power factor correction,PFC)变换器的工频调节(line cycle adjusting,LCA)控制方法。LCA控制不需要误差放大器及相应的补偿网络,因此,具有瞬态响应速度快以及环路设计简单的优点,同时,LCA控制的运算量极低,适用于低成本,运算速度较慢的数字控制芯片。实验结果表明,与固定导通时间(constant on-time,COT)控制CRM Boost PFC变换器相比,LCA控制CRM Boost PFC变换器具有更快的瞬态响应速度以及相近的功率因数。A line cycle adjusting(LCA)technique for boost power factor correction(PFC)converter operating in critical conduction mode(CRM)was proposed.Without error amplifier and its compensator in the control loop,LCA controller is featured by fast dynamic response and simple control circuit design.Owing to the low computation requirement,the proposed control strategy can be implemented by low cost and slow computation-speed microcontroller.The experimental results show LCA controlled CRM Boost PFC converter has the same power factor and faster dynamic response,compared with constant on-time(COT)controlled CRM Boost PFC converter.

关 键 词：功率因数校正 BOOST变换器 临界连续导通模式 快速瞬态响应 

分 类 号：TM461[电气工程—电器]