三相交流励磁系统切换单相励磁运行特性分析  

Operation Characteristic Analysis of Single-Phase Excitation Mode Switching from Three Phase AC Excitation System

作　　者：栗伟周[1] 张赞 LI Wei-zhou;ZHANG Zan(Xuchang University,Xuchang 461000,China;Northwestern Polytechnical University,Xi'an 710129,China)

机构地区：[1]许昌学院,许昌461000 [2]西北工业大学,西安710129

出　　处：《微特电机》2018年第11期20-24,共5页Small & Special Electrical Machines

基　　金：河南省高等学校重点科研项目(19A470007);河南省科技攻关项目(172102210094)

摘　　要：三相交流励磁系统在高转速区域内切换为单相励磁方式有助于主电机弱磁运行。建立一种三相交流励磁系统在单相交流励磁方式下的数学模型,分析单相交流励磁方式的运行特性,同时对三相和单相励磁方式的切换时间进行分析,研究三相交流励磁系统在向单相交流励磁切换时,切换时刻对主电机励磁电流影响,仿真和实验证明所建模型及特性分析的正确性与有效性。The three phase AC excitation system switches to single-phase excitation mode in the high speed range helps the main motor to field weakening operation.A mathematical model of three-phase AC excitation system in single-phase AC excitation mode was established.The operation characteristics of single-phase AC excitation mode were analyzed.At the same time,the switching time of three phase and single-phase excitation mode was analyzed.The influence of the switc-hing time on the excitation current of the main motor when the three-phase AC excitation system was switched to singlephase AC excitation was studied.Simulation and experiment prove that the model and characteristic analysis are correct and effective.

关 键 词：三相交流励磁系统 单相交流励磁方式 切换 起动/发电一体化 

分 类 号：TM343[电气工程—电机]