Abstract
This paper presents a stator winding temperature detection method for permanent magnet synchronous motors (PMSMs) using a motor parameter estimation method. PMSM performance is highly dependent on the motor parameters. However, the motor parameters vary with temperature. It is difficult to measure motor parameters using a voltage equation without additional sensors. Herein, a stator winding temperature estimation method based on a d-axis current injection method is proposed. The proposed estimation method can be used to obtain stator temperatures and to achieve reliable operation. The validity of the proposed method is verified through simulations and experimental results.
Highlights
Permanent magnet synchronous motors (PMSMs) are widely employed in industrial drives, electric vehicles, renewable energy systems, etc., owing to their high torque density, high power density, and high efficiency [1]
This paper presents a stator winding temperature estimation method for motor systems without additional temperature sensors
Analysis is not required regarding the inductance and the rotor flux variation according to the current vectors and the magnet temperature using finite element analysis (FEA), because the d, q-axis inductances can be calculated as shown in Equation (10) and the rotor flux is not required to calculate the stator resistance
Summary
Permanent magnet synchronous motors (PMSMs) are widely employed in industrial drives, electric vehicles, renewable energy systems, etc., owing to their high torque density, high power density, and high efficiency [1]. In the parameter estimation method, to limited applications and require long development times. In the parameter estimation statorlead resistance is used as the indicator of the stator winding temperature. The accuracy of the stator temperature has significant advantages over the thermal model method. Lead map and mapmap are identified theidentified simulations results These factors lead to long development times being required. This paper presents a stator winding temperature estimation method for motor systems without. This paper presents a stator winding temperature estimation method for motor systems without additional temperature sensors. To obtain the stator winding temperature, the motor parameters are additional temperature sensors. To obtain the stator winding temperature, the motor parameters estimated. For the motor parameter estimation, the d-axis current injection method is proposed.
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