摘要
提出一种以磁路转移为技术手段的电感调节原理,利用直流磁通迫使交流磁通改变流通路径,达到磁路转移的目的,进而改变交流等效磁阻实现电感值连续无级可调。结合磁路基本理论详细分析调节过程,给出3种情况下电感计算模型;用有限元法仿真计算电抗器的磁场分布;设计直流控制电路及参数;制作一台实验样机,测试电感调节特性。仿真和实验结果证实了此原理的正确性。结果表明:电感值与补偿系数呈反比例函数关系,且补偿系数越小,电感值变化越明显;不补偿时,交流等效磁阻最小,电感值最大;全补偿时,交流等效磁阻最大,电感值最小;电感调节倍数取决于大气隙与小气隙的比值。
An inductance adjustment theory based on magnetic circuit transfer is proposed.By using DC magnetic flux to compel AC magnetic flux to change its circulation patli,the magnetic circuit transfer was achieved,so that tiie AC equivalent reluctance was changed and the inductance value was adjusted con tinuously.Its working process was analysed in detail combining with magnetic circuit basic principles and inductance mathematical expressions in 3 conditions were provided.Finite element method was used to simulate the reactor’s magnetic field.DC controlling circuit and its parameters were designed.A prototype was made to measure its inductance adjustment feature.Simulation and experimental results con firmed the correctness of this theory.Results show that the relationship between inductance value and compensation coefficient is an inverse function.The less compensation coefficient is,the more obviously inductance value changes.When it is not compensated,the AC equivalent reluctance is minimum and in ductance is maximum&while the AC equivalent reluctance is maximum and inductance is minimum when it is fully compensated.The ratio of maximum and minimum inductances depends on that of large air-gap and small air-gap.
作者
官瑞杨
魏新劳
陈庆国
王永红
GUAN Rui-yang;WEI Xin-lao;CHEN Qing-guo;WANG Yong-hong(Key Laboratory of Engineering Dielectrics and its Application of the Ministry of Education,Harbin University of Science and Technology,Harbin 150080,China)
出处
《电机与控制学报》
EI
CSCD
北大核心
2018年第12期37-43,共7页
Electric Machines and Control
基金
黑龙江省普通本科高等学校青年创新人才培养计划(UNPYSCT-2018198)
关键词
电抗器
磁路转移
电感
磁通
可调
reactor&magnetic circuit transfer
inductance
magnetic flux
adjustable
作者简介
官瑞杨(1988—),男,博士研究生,讲师,研究方向为可调电力电抗器设计和高电压外绝緣。通信作者:官瑞杨;魏新劳(I960—),男,博士,教授,博士生导师,研究方向为高压电器设备设计和绝緣检测;陈庆国(1970—),男,博士,教授,博士生导师,研究方向为电气设备绝緣检测和电介质应用技术;王永红(1972—),男,博士,教授,研究方向为干式空心电抗器匝间绝緣过电压试验。
