Abstract:

In order to obtain better electromagnetic performance, low-speed and high-torque motors are mainly characterized by large diameter-to-length ratio, which will result in low internal space occupancy. In order to make full use of the internal space and improve the output torque density of the low-speed high-torque motor, a new hybrid rotor dual stator low-speed high-torque motor is proposed. In order to ensure the long-term reliable operation, the stator-rotor-stator double air gap structure and the mechanical structure of the motor are designed, and a detailed mechanical performance analysis of the important structural parts is conducted. In addition, in view of the complex heat transfer path of the motor, a new thermal network model is proposed. Based on this, the temperature rise distribution characteristics of the motor is analyzed, and an effective cooling system is designed.

Key words: Dual stator motor, mechanical structure, temperature-rise, cooling system