绕线转子同步电机用ZCS Buck励磁变换器  

ZCS Buck Excitation Converter for Electric Vehicle with Wound Rotor Synchronous Motors

作　　者：孟准[1] 涂世杰[2] 李国栋[3] 陈培育[3] 王议锋[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072 [2]江西省电力公司检修分公司,江西南昌330000 [3]国网天津市电力公司,天津300010

出　　处：《电气传动》2016年第5期61-65,共5页Electric Drive

基　　金：天津市支撑计划项目(14ZCZDGX00035)

摘　　要：提出了一种适用于电励磁同步电机的零电流(ZCS)软开关Buck励磁变换器。为了减小励磁变换器的体积,利用转子绕组的等效电感作为Buck输出滤波电感。在此基础上,为了消除转子绕组寄生参数和Buck开关器件高频开关引起的励磁电流脉动噪声,提出一种传统Buck电路与耦合电感和谐振电容的组合结构。谐振回路的存在实现了功率开关器件的ZCS软开关,提高变换器效率的同时平滑输出电流,有效减小电磁干扰(EMI)。最后,通过PSIM仿真验证了所提变换器拓扑的有效性。A ZCS Buck excitation converter for electric vehicle（EV）with wound rotor synchronous motors wasproposed. In order to eliminate the pulse noises in excitation current when considering the parasitic parameters for therotor coil,a small coupled inductor and a small resonant capacitor were combined with basic Buck circuit. Due to theexistence of resonance,zero-current soft-switching for both turn-on and turn-off transitions were achieved,and moreimportantly,a constant output current without any spikes was guaranteed,which contributed to efficiency promotionand electromagnetic interference（EMI）reduction. In the end,PSIM simulation results are presented to verify thefeasibility of theoretical analysis.

关 键 词：电动汽车 绕线转子同步电机 零电流开关 BUCK变换器 

分 类 号：TM464[电气工程—电器]