摘要
为减小移相变压器的等效容量,并降低其绕组结构的复杂程度,提出一种等效容量小、绕组结构简单的星形联结移相自耦变压器。根据多脉波整流器对移相变压器的要求,确定了星形联结移相自耦变压器的相量图以及各绕组之间的匝比关系;定义了应用星形连接自耦变压器的12脉波整流器的开关函数,并应用该函数分析了12脉波整流器的输入电流和负载电压,并计算了该整流器所使用的3种磁性器件的等效容量。理论分析、仿真及实验结果表明,该整流器可以实现12脉波整流,且具有系统功率密度高、结构简单等优点,适合应用于三相四线制的大功率整流场合。
In order to reduce the equivalent rating and complexity of the winding configuration in the phase-shifting transformer,a star-connected phase-shifting autotransformer was proposed with low rating and simple winding configuration.According to the requirement of multi-pulse rectifier on phase-shift transformer,the phasor diagram of the star-connected autotransformer and the turn ratio of the winding were confirmed.The switching function of the 12-pulse rectifier using the star-connected autotransformer was defined,and from the switching function,the input line current and load voltage of the 12-pulse rectifier were analyzed,and the equivalent kVA rating of the three magnetic devices in the 12-pulse rectifier was calculated.Theoretical analysis,simulation and experimental results show the rectifier with the star-connected autotransformer can realize the 12-pulse rectification,and has the merits of high power density and simple configuration,and the proposed 12-pulse rectifier is suitable to be used in high-power rectification with three-phase four-wire.
作者
孟凡刚
朱春波
高蕾
杨威
杨世彦
MENG Fan-gang;ZHU Chun-bo;GAO Lei;YANG Wei;YANG Shi-yan(School of Electric Engineering,Harbin Institute of Technology,Harbin 150001,China)
出处
《电机与控制学报》
EI
CSCD
北大核心
2018年第8期1-9,共9页
Electric Machines and Control
基金
国家自然科学基金(51777042)
中国博士后科学基金(2016M590281
2017T100241)
关键词
12脉波整流器
星形自耦变压器
平衡电抗器
零序电流抑制器
12-pulse rectifier
star-connected autotransformer
inter-phase reactor
zero-sequence blocking transformer
