基于电阻辨识自传感技术的永磁同步电动机温度检测  

Temperature Measurement of Permanent Magnet Synchronous Motor Based on Resistance Identification Self-Sensor Technology

作　　者：冯文轶[1,2] 陈剑[1] 张宇宁[1] 

机构地区：[1]中国矿业大学,徐州221116 [2]河南能源化工集团永煤公司,永城476600

出　　处：《微特电机》2014年第8期55-58,共4页Small & Special Electrical Machines

摘　　要：针对永磁同步电动机矢量控制系统的调节器参数需要根据其实时电机参数值进行整定,提出在三相交流电压的一相上叠加直流电压的方法测量永磁同步电动机定子电阻,并将实际测得电阻值反馈回矢量控制系统,进行调节器参数的自整定,使得控制系统保持良好的控制性能。同时,针对永磁同步电动机高温时存在易去磁的问题,根据电阻与温度的关系,可通过该方法估计的电阻进行电机的温度估计,防止电机温度过高,即实现自传感的目的。最后,通过仿真与实验验证了直流电压叠加测电阻以及自传感测温的可行性,为直流叠加法测电机电阻以及自传感技术奠定了良好的理论基础。Since the parameters of vector control system are regulated according to the realtime parameters of permanent magnet synchronous motor（PMSM）,the method of superimposing the DC voltage on one phase of three phase AC votage for measuring the stator resistance was proposed.The parameters of regulator are regulated based on the realiime resistance fed back to the control system so that the system can maintain a good control performance.Meanwhile,the problem of demag（ing） ization is serious when the temperature of PMSM is too high.To prevent the temperature rising too high,the method prop（） above for detecting resistance was used to measure the temperature which achieved the self-sensor.Finally,the feasibility of superimposing the DC voltage for measuring resistance and measuring the temperature by self-sensor were verificated by simulation and experiment which laid a good foundation for the theory of superimposing the DC voltage measuring resistance and self-sensor technology.

关 键 词：永磁同步电动机 矢量控制 参数辨识 直流电压叠加 自传感技术 

分 类 号：TM351[电气工程—电机] TM341