改善三相换向器电动机换向火花的措施和放电绕组的实践设计

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<正> 先锋电机厂生产转子馈电三相换向器电动机从仿制到今天已有46年左右的历史,经过几次改型,不断缩小体积,提高性能和改善换向火花,才形成目前能利用新电刷设计和制造赶超世界先进水平的YHT_2新系列。改善这种电动机换向火花的措施是在总结经验、不断改进,并利用某些新技术后才得以逐步形成。尤其是在1963年于单进双叠调节绕组改用双进双叠、外加乙种均流线和初级、调节绕组接成串联;1966年于24~4千瓦电机上试用放电绕组以替
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