Parameter Variation Insensitive Armature Temperature Estimation Method for SPMSM Servo System

This study paper a new compensation method for estimating temperature using a voltage disturbance observer. In motor driving systems, it is important to monitor the temperature of the motors in order to prevent demagnetization and dielectric breakdown. Generally, thermal sensors are used to obtain the temperature information. However, this increases the costs and motor volume. Hence, it has been proposed a method to estimate the temperature based on the motor model without a thermal sensor. To overcome the problems with regard to voltage disturbances, this paper proposes a new method to compensate the voltage disturbances and confirms the effectiveness through experiments.