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.
出处
《电机与控制学报》
EI
CSCD
北大核心
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
