NTC temperature sensor for temperature monitoring of oil cooled motors.Infrared digital sensor

　　The monitoring of the highest temperature of the motor is a very important work item in motor control. If the detection of the highest temperature of the motor is not accurate, it may lead to serious reliability problems during the operation of the motor, and in extreme cases, it may lead to the motor being burned. The spatial position of the highest temperature of the motor will vary with changes in cooling oil flow rate, oil temperature, motor speed, and motor torque. The NTC temperature sensor is used to directly detect the highest temperature of the motor under different working conditions and cooling conditions.

　　The monitoring method for the working temperature of oil cooled motors is to obtain the temperature distribution of the motor through motor thermal model testing and data analysis, in order to determine the reasonable placement of NTC temperature sensors. The highest temperature correction value of the motor is fitted with the cooling oil flow rate, oil temperature, engine speed, and motor torque, in order to obtain the actual correction value of the highest temperature of the motor. Then, the NTC temperature test value is corrected, Effectively ensuring the accuracy of the highest operating temperature of the motor obtained.

　　The NTC thermistor used for temperature monitoring of oil cooled motors uses high-precision glass sealed thermistors, which have the characteristics of high temperature resistance, good stability, high reliability, and high sensitivity. It is packaged using high-precision thermistors and high thermal conductivity wires, which can accurately determine the highest temperature of the motor with high precision; It has a fast reaction speed and can quickly detect temperature changes in the motor.

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