级联H桥型多电平变换器载波带频率变化的PWM方法的研究  

Study of PWM Methods with Variable-Frequency Carrier Bands in Cascade H-Bridge Converter

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：《低压电器》2010年第3期42-45,共4页Low Voltage Apparatus

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

摘　　要：提出了一种新型多电平变换器。该变换器是VFCB-PWM技术与级联H桥型变换器拓扑结构的结合,而VFCB-PWM技术具有良好的降低谐波含量和提高直流电压的作用,能在较低的器件开关频率下实现较高等效开关频率的效果。仿真结果表明该变换器能有效地降低谐波,具有结构简单、传输频带宽、动态响应好等优点。A new multi-level converter was proposed.The converter,in which the cascade H-bridge converter was integrated with VFCB-PWM technology which could reduce harmonic components and boost DC voltage,could obtain high equivalent switching frequency with low switching frequency of devices.The simulation result showed that the converter could reduce harmonic effectively,with merits of simple configuration,wide transmission band-width and good dynamic response.

关 键 词：载波带 级联 H桥 多电平变换器 三次谐波注入 

分 类 号：TM464[电气工程—电器]