Coupled autotransformer and magneticcontrol soft-start method for super-largecapacity high-voltage motors

作     者：Jiaxin Yuan Chuansheng Wang Shan Yin Liangliang Wei Kazuhiro Muramatsu Baichao Chen 

作者机构：School of Electrical Engineering and AutomationWuhan UniversityWuhanPeople's Republic of China Shenzhen Institute of Wuhan UniversityShenzhenPeople's Republic of China China Energy Engineering Group Jiangsu Power Design Institute CompanyNanjingPeople's Republic of China Department of Electrical EngineeringKyoto UniversityKyotoJapan Department of Electrical and Electronic EngineeringSaga UniversitySagaJapan 

出 版 物：《High Voltage》 (高电压（英文）)

年 卷 期：2020年第5卷第1期

页      面：38-45页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：This work was supported in part by the National Key Research and Development Program of China under Grant no.2017YFB0902904 in part by the Natural Science Foundation of Hubei Province under Grant no.2016CFB448 in part by the Shenzhen City Science and Technology Innovation Plan under Grant no.JCYJ20170306170937861 in part by Wuhan City Science and Technology Program under Grant no.2016070204020165 

主　　题：shortcomings starting combine 

摘      要：The large current generated by a direct start of the super-large-capacity high-voltage induction motor would have a huge impact on the power grid as well as the motor *** soft starters have the shortcomings of discontinuous adjustment,voltage sags,sudden torque mutation,secondary current impact and high *** resolve this issue,the authors propose a novel coupled autotransformer and magnetic-control(CATMC)soft-start *** structure of the new CATMC soft starter combines the functions of the autotransformer and magnetic control reactor via an innovative electric and magnetic circuit *** this study,the authors analyse the magnetic circuit structure and working principles of the CATMC soft ***,to validate its principle and performance,the authors conduct a simulation study using ANSYS software and design and test an 18 MW/10 kV CATMC soft starter *** simulation results demonstrate that the CATMC soft starter effectively avoids secondary current impact and constrains the motor starting current to2.5 times the rated *** public connection point bus voltage also meets the voltage sag requirement of the IEEE standard and reduces the impact on the power grid.