摘要
直流无刷电机的应用对其体积及重量提出了越来越严格的要求,因此无位置传感器式直流无刷电机得到了更加广泛的应用。为了解决在无位置传感器直流无刷电机启动过程中,反电动势位置检测方法不能准确得到位置信息的问题,对直流无刷电机的步进启动过程进行了分析,并用公式推导出直流无刷电机启动和换相时间间隔的关系。为传统的步进启动方法提供确实的理论支持。最后,设计实验并制作直流无刷电机调速系统验证结论的可行性。
Application of brushless DC motors poses more and more strict requirement on their volume and weight.Therefore,sensorless brushless DC motor has found wider application.In order to solve the problem that in the step-by-step startup of sensorless brushless DC motor （BLDCM）,the back-EMF inspection can not obtain accurate position information,an analysis is made of the startup process,and a formula is used to deduce its commutation time interval during the start,thus providing a solid theoretical support for the conventional step-by-step start.Finally,the feasibility of the conclusion is verified by the designed experiment and the produced BLDCM speed-regulating system.
出处
《电气自动化》
2014年第5期1-3,共3页
Electrical Automation
