Abstract Robot permanent magnet servo motor is usually powered by frequency converter, which contains a lot of harmonics compared with standard sine wave. At the beginning of motor design, the research method of sine wave power supply can not really reflect the loss of permanent magnet motor. In order to simulate the operation of permanent magnet servo motor more truly, the method of field-circuit coupling is used to study the loss and temperature rise of permanent magnet servo motor. The control circuit of Id=0 is constructed in Simplorer and co-simulated with Maxwell. Firstly, taking a robot permanent magnet motor of 2.1kW 4000r/min as an example, it is verified that the field-circuit coupling method has great advantages over the time-step finite element method. Then the loss of a 1kW 3000r/min surface-mounted robot permanent magnet motor under different speed and load is analyzed, and a three-dimensional analysis model is established to analyze the temperature rise of the motor under different speed and load by finite element method.
Zhu Tianli,Han Xueyan,Zhu Longfei. Loss and temperature rise analysis of robot permanent magnet motor based on field-circuit coupling[J]. Electrical Engineering, 2020, 21(6): 7-12.
2020, Vol. 21 
