无刷直流电机的保护电路  

Protective Circuit of Brushless DC Motors

作　　者：袁题训[1] 董升亮[1] 耿丙群[1] 韦统安[1] 

机构地区：[1]中国海洋大学信息科学与工程学院,山东青岛266100

出　　处：《现代电子技术》2011年第24期41-44,共4页Modern Electronics Technique

基　　金：国家"863"计划资助项目(2006AA09Z231)

摘　　要：为了使无刷直流电机长期稳定运行,采用加保护电路的方法使其正常工作,保护电路主要由欠压保护、过流保护、短路保护等组成,在软件里设置电压、电流的阈值,直接对电压、电流进行检测并产生相应的保护,以免对电路和电机造成损害,并且做了相应的欠压、过压、过流测试实验。实践应用表明,该设计的几种方案切实可行,能够在异常情况下及时对电机做出保护动作。To make the brushless DC motor worked stably for a long time,the method of adding a protective circuit was adopted.The protective circuit is mainly made up of the under-voltage protection,over-current protection and short-circuit protection,etc.The voltage and current threshold values were set in the software to detect the voltage and current directly and generate the appropriate protection to avoid damaging the circuit and motor.The appropriate testing experiments of under-voltage,overvoltage and overcurrent were made as well.A practical application shows that several schemes of the design are feasible and can protect the brushless motors in abnormal condition timely.

关 键 词：无刷直流电机 欠压保护 过压保护 过流保护 

分 类 号：TN919-34[电子电信—通信与信息系统]