A calculation method for the temperature field of the main drive motor of an electric aircraft

Abstract

The invention discloses a method for calculating the temperature field of a main drive motor of an electric aircraft. The invention includes: (1) combining the special structure of the main drive motor of the electric aircraft, setting the basic assumptions of the solution process; (2) combining the actual working conditions of the main drive motor of the electric aircraft, completing the setting of the boundary conditions of the fluid field and temperature field; (3) establishing the electric The mathematical model of the main drive motor of the aircraft; (4) Establish the physical model of the main drive motor of the electric aircraft, and complete the model network segmentation; (5) Based on the fluid-solid coupling differential equation, use the finite element numerical solution to solve it, and obtain the different operating conditions of the main drive motor of the electric aircraft. Temperature rise distribution under working conditions. The invention solves the temperature field and the fluid field of the main driving motor of the electric aircraft, adopts the same mathematical model, and has the advantages of fast solving speed, less iteration times and high calculation accuracy.

Description

technical field [0001] The invention relates to a method for solving the temperature field of a main drive motor of an electric aircraft based on the theory of fluid-solid coupling, and belongs to the technical field of temperature field analysis of high energy density motors. Background technique [0002] With the gradual opening of low-altitude airspace and continuous research on new energy technologies, the civil electric aircraft industry is developing rapidly. Electric aircraft requires high power density and high torque density of the main drive motor, which makes the temperature rise of the main drive motor of electric aircraft higher than that of ordinary motors. If the calculation of the temperature field of the main drive motor is inaccurate, the motor will not work normally. Especially for the motor used in the main drive of electric aircraft, its temperature rise is higher than that of conventional motors, which is generally close to the maximum value that the mo...

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Problems solved by technology

[0005] In order to solve the problem that the heat dissipation coefficient of the temperature field of the traditional motor is difficult to solve, and the temperature field of the stator and the rotor has a large error in solving alone, the present invention provides a flow that is effectively suitable for the main drive high-energy-density motor of the electric aircraft and has high solution accuracy and fewer iterations. Solid coupling temperature field solution method

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