无桥拓扑有源PFC的理论和仿真研究  

Theoretic and simulation study of bridgeless topology active power factor correction

作　　者：陶玉波[1] 田虎[2] 杨承志[1] 林弘[3] 

机构地区：[1]昆明理工大学信息工程与自动化学院,云南昆明650051 [2]重庆仪表材料研究所,重庆400700 [3]南京理工大学能源与动力工程学院,江苏南京210094

出　　处：《电力系统保护与控制》2011年第13期83-90,共8页Power System Protection and Control

摘　　要：针对传统有源Boost-PFC的功率开关器件开关导通损耗大,承受较高的电压、电流和热应力的不足之处,提出了一种新型的无桥有源PFC电路(BLPFC)结构。该电路用两个IGBT取代了传统整流桥下桥臂的两个整流二极管,并采用双闭环平均电流控制策略,使之具有传统PFC提高功率因数和降低电网谐波的特点,又具有提高系统开关器件效率,降低系统损耗,发热和成本的优点。利用Matlab/Simulink的SimPowerSystems工具包对设计的BLPFC电路进行仿真,仿真结果表明,与传统的有源PFC相比,无桥有源PFC电路能够很好地提高系统的效率,降低开关器件损耗,抑制电流谐波,且输入电流能够很好地跟踪输入电压波形。In terms of the inadequacy of the traditional Boost-type PFC power switching devices which brings a lot of switching losses and conduction losses,and burdens with a high voltage,strong current and thermal stress,this paper proposes a new Bridgeless Topology Active Power Factor Correction（BLPFC） circuit construction. This circuit changes the two diodes in traditional rectifying bridge legs into IGBT,and adopts dual closed-loop average current control strategy to improve power factor and reduce the harmonic pollution from the grid. It can improve the system switching devices efficiently and reduce system heat dissipation and costs. This circuit is simulated using the SimPowerSystems kit in Matlab/Simulink software. Simulation results show that BLPFC provides a high efficiency,low switching losses,and can restrain current harmonics,and the input current which can keep track of the input voltage waveform well.

关 键 词：有源PFC 无桥PFC 仿真研究 功率因数校正 双闭环电流控制策略 

分 类 号：TM46[电气工程—电器]