Research Status and Outlook for Motor Rotor Temperature Monitoring Methods
Rotor temperature has become an important indicator for motor design and health monitoring with the development of high-speed motors.The strong electromagnetic working environment of the motor,the narrow air gap,and the large rotational centrifugal force are the challenges of rotor temperature sensing.This paper aims at the monitoring method of motor rotor tempera-ture,including resistance method,infrared temperature measurement method,temperature measurement method by electronic sen-sors,semiconductor temperature sensitive element method and fiber grating temperature measurement method This paper de-scribed the principle and characteristics of various methods.The current state of research in the field of online rotor temperature monitoring and the main results achieved were presented.The application and research progress of fiber Bragg grating was focused on,the applicability and the main problems of each method were analyzed and summarized.The future technical paths and devel-opment directions were predicted.
motor rotor temperature monitoringwireless temperature measurement methodinfrared temperature measurement methodfiber Bragg grating temperature measurement method