Transient temperature prediction method for aviation permanent-magnet synchronous motor

• Main Authors: ZHAO QUNBI, WANG PEILU, ZOU LI
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2019
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; PHYSICS; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The invention provides a transient temperature prediction method for an aviation permanent-magnet synchronous motor. According to the method, a two-dimensional electromagnetic field is designed for the motor and corresponding electromagnetic parameters are obtained according to the geometric size, material parameters, work system and load characteristic of the motor, a Matlab/Simulink electric driving system is used for simulation analysis, a three-phase current and motor rotating speed curve of the motor is obtained, high-precision temperature distribution is obtained by loss calculation based on curve fitting and a current/voltage source method, 3D motor model design and finite element model grid generation, cooling/radiating condition and liquid-solid coupling analysis, and transient temperature prediction for different components of the motor, and optimized design of the motor is facilitated to largest extent. 本发明提出一种航空用永磁同步电动机瞬态温度预测方法，该方法依据电机的几何尺寸、材料参数、工作制和负载特性对电机进行二维电磁场设计并获取相应的电磁参数，通过Matlab/Simulink电驱动系