新型双18脉波整流器的拓扑结构特性  

Characteristic of Novel Dual 18-Pulse Rectifier Topology

作　　者：胡文华[1,2] 宋平岗[2] George Cheng 

机构地区：[1]华中科技大学电气与电子工程学院,武汉430074 [2]华东交通大学电气与电子工程学院,南昌330013 [3]Department of Electrical and Computer Engineering, Ryerson University, Toronto M5B 2K3

出　　处：《高电压技术》2010年第5期1299-1304,共6页High Voltage Engineering

基　　金：国家自然科学基金(50607020)~~

摘　　要：为了满足对电网谐波治理的要求,提出了一种新颖的双18脉波整流器拓扑结构。首先介绍了其工作原理,然后分析了相移变压器的功能以及消谐原理,推导出进线电源中电流的解析表达式,最后对这种新型的拓扑结构进行了仿真和实验研究。仿真和实验的结果表明,这种双18脉冲整流器不仅能实现36脉波整流的效果,使其满足IEEE Standard 519-1992标准的要求,而且该拓扑结构还可以消除由于制造等原因而造成相移角误差所引起的残留在单个相移变压器中的第5、7等低次谐波。该拓扑结构具有优良的工作性能和良好的工业应用前景。In order to depress the harmonic component of the grid,a novel rectifier topology that uses two 18-pulse transformers to achieve 36-pulse harmonic cancellation was presented.The proposed rectifier can be used to reduce the input current harmonics for several multilevel inverters.First,the principle of this rectifier was introduced in detail.Then the function and harmonic-eliminating principle of the phase shifting transformer were analyzed.Second,the mathematical formulae of the input currents were deduced.Third,simulation and experiment were carried out to test this topology.The results prove that this rectifier topology can not only achieve 36-pulse harmonic cancellation,but also provide additional harmonic cancellation for the 5th and 7th harmonics for non-ideal transformers and have good performance and high value in industrial practice.

关 键 词：谐波治理 双18脉波 拓扑 多脉波整流器 相移变压器 谐波消除 相移角 

分 类 号：TM461[电气工程—电器]