反激式AC/AC型三电平交流变换器研究  

A Novel Flyback-mode AC/AC Type Three-level AC Converter

作　　者：李磊[1] 郭志刚 管月[1] 郭健 LI Lei;GUO Zhi-gang;GUAN Yue;GUO Jian(Nanjing University of Science ＆ Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学,自动化学院,江苏南京210094

出　　处：《电力电子技术》2018年第10期81-83,共3页Power Electronics

基　　金：江苏省自然科学基金(BK20161499);中央高校基本科研业务费专项资金(30920140122005)

摘　　要：提出了一种新颖的反激式AC/AC三电平交流变换器。该变换器的电路拓扑由三电平变换器、高频储能式变压器、周波变换器以及输入和输出滤波器等构成,具有拓扑简洁、两级功率变换、双向功率流、高频电气隔离、适用于高压场合等优点,能够将一种不稳定畸变的高压交流电变换成同频率稳定的正弦交流电,为实现新型电力电子变压器、正弦交流稳压器和交流调压器提供了技术基础。分析了该变换器的电压瞬时值反馈控制策略、工作模式与稳态原理,给出了变换器外特性,并通过原理实验验证了该变换器的正确性和先进性。A circuit topology of the forward-mode three-level AC/AC converter is proposed.The kind of circuit topologies are constituted of three-level converter, high frequency transformer, output cycloconverter.The converter has the advantages such as simple topology,two-stage power conversions ,bidirectional power flow,high frequency electrical isolation ,three-level voltage across the output filter and so on.The circuit structure is used for transferring the unsta- ble AC voltage with high distortion into a regulated constant frequency sinusoidal voltage.The converters lay the key technical foundation on new-type electronic transformers, regulated sinusoidal AC power supplies and AC regulators. The operation modes, steady principles and control strategy of the proposed converter are investigated.The correction and advance of the kind of converters are verified by principle test.

关 键 词：变换器 三电平 反激式 

分 类 号：TM46[电气工程—电器]