Temperature distribution measuring method for high speed rotating permanent magnetism synchronous electric machine rotor

A measuring method for a high speed rotating permanent magnetic synchronous rotor temperature distribution is used for measuring the surface temperature distribution of the permanent magnetic rotor of a high speed rotating permanent magnetic synchronous motor. The invention firstly drills a pore on the stator tooth and fixes the infrared temperature sensor in the pore to make the probe of the sensor oppose to the surface of the rotor; the invention also uses a variable-frequency governor to make the rotor in high speed rotation reduce below the critical measuring rotating speed in a short time and stabilize the operation; the data collecting system records the changes of the surface average temperature in the process of rotor deceleration measured by the sensor and the rotor surface temperature distribution of the stable operation below the critical measuring speed; the method adds two of the result to obtain the temperature distribution while rotating in high speed. The invention achieves the single sensor n