输出电压纹波控制两开关PCCM Buck-Boost PFC变换器  

Output voltage ripple control two-switch PCCM Buck-Boost PFC converter

作　　者：张斐[1] 许建平[1] 董政[1] 舒立三[1] 

机构地区：[1]西南交通大学电气工程学院磁浮技术与磁浮列车教育部重点实验室,四川成都610031

出　　处：《电机与控制学报》2013年第7期113-118,共6页Electric Machines and Control

基　　金：国家自然科学基金(51177140);中央高校基本科研业务费专项资金(2682013ZT20);西南交通大学博士创新基金

摘　　要：研究了两开关伪连续导电模式(pseudo continuous conduction mode,PCCM)Buck-Boost功率因数校正(power factor correction,PFC)变换器的工作原理,为了简化两开关PCCM Buck-BoostPFC变换器的控制器设计,在分析单相PFC变换器输出电压纹波的基础上,提出了输出电压纹波反馈控制算法。该算法采样PFC变换器的输出电压,通过计算得到输出电压纹波值来实时调整电流控制环的补偿系数,无需增加额外的硬件电路,利用数字信号处理器的编程方式即可实现。仿真与实验结果表明,当负载功率发生大范围变化时所设计的系统具有快速动态响应能力。Two-switch Buck-Boost power factor correction （PFC） converter operating in pseudo continuous conduction mode （PCCM） is proposed in this paper. In order to simplify the controller design of the two-switch PCCM Buck-Boost PFC converter, output voltage ripple feedback control algorithm was pro- posed through analyzing output voltage ripple of the single-phase PFC converter. By sampling and calcu- lating the output voltage ripple value, the proposed algorithm selected compensation coefficient of the cur- rent control loop dynamically. Without adding auxiliary circuit, the proposed algorithm was programmed with digital signal processor （DSP）. Simulation and experiment results show that the system has fast dy- namic response when the load power varies in a large-scale.

关 键 词：快速动态响应 功率因数校正 伪连续导电模式 两开关Buck—Boost变换器 

分 类 号：TU313[建筑科学—结构工程]