载波带频率变化的PWM(VFCB-PWM)在级联有源电力滤波器中的应用  

Variable-frequency carrier bands PWM (VFCB-PWM) and its applications in shunt APF

作　　者：孙运全[1] 尹强[1] 盛吉[1] 潘文婷[1] 

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013

出　　处：《电力系统保护与控制》2010年第10期39-42,113,共5页Power System Protection and Control

基　　金：江苏省高校自然基金(06KJB470015);江苏省工业攻关项目(BE2007069)

摘　　要：分析了级联H桥型变换器的工况,讨论了载波带频率变化的PWM(VFCB-PWM)技术,提出了基于VFCB-PWM技术的级联H桥型多电平变换器。利用瞬时无功功率理论,将其应用在并联型有源电力滤波器(APF)中。仿真结果表明,该并联型APF系统能够有效地补偿非线性负载引起的谐波和无功电流,性能良好。The principle of cascade H-bridge converter is analyzed.Variable-Frequency Carrier Bands PWM（VFCB-PWM） technique is discussed.Cascade H-bridge converter based on VFCB-PWM technique is proposed.Also,it is applied in shunt active power filter（APF） based on instantaneous reactive power theory.It is found in the simulation results that the proposed shunt APF can compensate the harmonic and reactive current validly caused by nonlinear loads,as well as,the performance is well.

关 键 词：电力电子 载波带频率变化的PWM(VFCB-PWM) 级联H桥型多电平变换器 有源电力滤波器 

分 类 号：TN713.8[电子电信—电路与系统] TM46[电气工程—电器]