大型电机磁极线圈匝间绝缘中频试验技术研究  

Research on Middle Frequency Voltage Test Technique Used in Turn-to-turn Insulation Test for Pole Coils of Large Electrical Machines

作　　者：魏新劳[1] 薛庆会[1] 王永红[1] 陈庆国[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150040

出　　处：《哈尔滨理工大学学报》2009年第2期50-54,共5页Journal of Harbin University of Science and Technology

基　　金：国家自然科学基金(50677012)

摘　　要：从分析现有磁极线圈匝间绝缘试验技术的不足出发,通过分布参数等效电路研究了磁极线圈匝间电压的频率分布,再通过对典型磁极线圈的具体仿真分析确定了合适的试验电源上限频率.提出了利用高压大功率电力电子开关技术和并联谐振电路技术开发大型电机磁极线圈匝间绝缘试验,采用中频高压电源的技术方案,并结合典型的磁极线圈具体参数对技术方案中的关键技术环节进行了仿真分析.结果表明,技术方案是可行的.利用这种电源进行磁极线圈匝间绝缘试验可以克服现有磁极线圈匝间绝缘试验技术存在的不足.Beginning an analysis of the shortcomings of present methods used to test turn-to-turn insulation of pole coil of large electrical machines, the frequency distribution of the turn-to-turn voltage in pole coil is researched at the first by a distribution circuit model of the pole coil. Appropriate high limit of frequency of the testing voltage source is determined by a circuit simulation analysis made for a typical pole coil. Combining of high power electronic switching technique and parallel resonance skill of the test circuit, the paper presents a technique scheme of midrange frequency high-voltage source used for large electrical machine＇ s pole coil turn-to-turn insulation test. The key segment of this scheme is simulated by means of a typical pole coil. The simulation results show that the technique scheme of pole coil＇ s turn-to-turn insulation test voltage source is feasible. It is possible to overcome the shortcomings of the present pole coil＇ s turn-to-turn insulation test methods if the new technique scheme of pole coil＇s turn-to-turn insulation test voltage source is adopted in the future.

关 键 词：匝间绝缘试验 中频高压电源 磁极线圈 大型电机 

分 类 号：TM832[电气工程—高电压与绝缘技术]