中国电机工程学报2024，Vol.44Issue(19)：7806-7816,中插27,12.DOI:10.13334/j.0258-8013.pcsee.230871
发电机定子环形励磁绕组寄生电容解析模型与容值降低方法
Analytical Model and Reduction Method for the Parasitic Capacitance of Generator Stator Circular Excitation Windings
摘要
Abstract
The excitation controller is applied to control the excitation current of the generator,which is the kernel part of the generation system.The excitation controller with wide bandgap power devices(such as SiC or GaN)has the advantages of low loss and high switching frequency.However,the switching performance of power devices will be affected by parasitic capacitance in the circuit.The switching loss increases.The oscillation and electromagnetic interference problems occur.The parasitic capacitance of excitation winding is an important part of the excitation control circuit.The reduction of the parasitic capacitance can improve the operating characteristics of the excitation controller.In order to explore effective methods to reduce the parasitic capacitance,an accurate analytical model of parasitic capacitance of multi-layer windings is proposed in this paper.The turn-to-turn distance,turn-to-core distance and layer-to-layer distance are taken into consideration.The key factors affecting parasitic capacitance is obtained by calculating the sensitivity of parameters by Taguchi method.The variation law of parasitic capacitance is studied.An effective method is obtained to reduce the parasitic capacitance of multi-layer stator circular windings when the slot space of excitation winding is limited.The accuracy of the mathematical model and the effectiveness of the parasitic capacitance reduction method are verified by experiments.关键词
寄生电容/解析模型/励磁绕组/距离参数Key words
parasitic capacitance/analytical model/excitation winding/distance parameter分类
信息技术与安全科学引用本文复制引用
朱姝姝,刘倩倩,原熙博,王凯,刘闯..发电机定子环形励磁绕组寄生电容解析模型与容值降低方法[J].中国电机工程学报,2024,44(19):7806-7816,中插27,12.基金项目
国家自然基金(面上项目)(52277054). Project Supported by National Natural Science Foundation of China(General Program)(52277054). （面上项目）
