一种带隔离变压器的串联型18脉波整流器  

Series-connected 18-pulse rectifier using isolated transformer

作　　者：张华强 李泉慧 孟凡刚 高蕾 杨世彦[2] ZHANG Hua-qiang;LI Quan-hui;MENG Fan-gang;GAO Lei;YANG Shi-yan(School of New Energy,Harbin Institute of Technology,Weihai 264209,China;School of Electrical Engineering,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学(威海)新能源学院,山东威海264209 [2]哈尔滨工业大学电气工程学院,哈尔滨150001

出　　处：《电机与控制学报》2019年第12期23-31,共9页Electric Machines and Control

基　　金：国家自然科学基金(51777042,51677036);山东省自然科学基金(ZR2017MEE053)

摘　　要：为解决多脉波整流器中电流不平衡的问题,并提高负载电压,提出一种带隔离变压器的串联型18脉波整流器。根据整流器形成18脉波的原理,确定了移相变压器的相量图以及移相变压器的绕组结构和匝比关系;建立了整流器的等效模型,并由等效模型得到了整流器的工作模态;定义了三组三相整流桥的开关函数,利用开关函数分析了整流器输入电压,得到了输入电压和负载电压的定量关系。仿真和实验结果表明,该整流器可以实现18脉波整流,且负载电压和电流近似恒定。In order to solve the problem of current unbalance of parallel-connected multi-pulse rectifier and increase load voltage,a series-connected 18-pulse rectifier is proposed.In order to obtain the operating characteristics of 18-pulse rectifier based on isolation transformer with constant-voltage load,an 18-pulse isolation transformer was designed according to the process of the forming of 18-pulse wave.A definition was given on the switching function of three-phase bridge rectifiers.Through the description of the structure of the rectifier,the equivalent model of the rectifier was established.By analyzing the switching function of three-phase bridge rectifiers,the working method of the rectifier was obtained.The simulation and experimental results show that the device is an 18-pulse rectifier,and the load voltage and load current reach a permanent state.

关 键 词：串联型18脉波整流器 隔离变压器 恒压负载 电流源型变换器 

分 类 号：TM461.3[电气工程—电器]