Method for calculating temperature field of main driving motor of electric aircraft

A technology for electric aircraft and motor temperature, applied in calculation, electrical digital data processing, design optimization/simulation, etc., can solve problems such as difficult to solve the heat dissipation coefficient of the temperature field, large solution error of the stator and rotor temperature field, etc.

Active Publication Date: 2016-02-24
SHENYANG AEROSPACE UNIVERSITY
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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 alon...

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  • Method for calculating temperature field of main driving motor of electric aircraft
  • Method for calculating temperature field of main driving motor of electric aircraft
  • Method for calculating temperature field of main driving motor of electric aircraft

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Embodiment Construction

[0041] Combine below Figure 1-Figure 4 The content of the accompanying drawings further elaborates the present invention.

[0042] combine figure 1 The flow chart of the analysis of the heat transfer characteristics of the motor, the calculation method of the fluid-solid coupling temperature field of the main drive motor of the electric aircraft includes the following steps:

[0043] Step 1: According to the special structure and actual working conditions of the main drive motor of the electric aircraft, combined with the characteristics of the ventilation structure of the electric aircraft, set the basic assumptions of the solution process.

[0044] Step 2: Determine the coupling boundaries of the fluid, solid and temperature fields of the main drive motor of the electric aircraft, including the inlet boundary, outlet boundary and wall boundary.

[0045] Step 3: Establish a calculation model for solving the temperature field of the main drive motor of the electric aircraft...

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Abstract

The invention discloses a method for calculating a temperature field of a main driving motor of an electric aircraft. The method comprises: (1) in combination with a special structure of the main driving motor of the electric aircraft, setting a basic assumption of a solving process; (2) in combination with a practical working condition of the main driving motor of the electric aircraft, finishing the setting of boundary conditions of a fluid field and the temperature field; (3) establishing a mathematic model of the main driving motor of the electric aircraft; (4) establishing a physical model of the main driving motor of the electric aircraft, and finishing model network subdivision; and (5) based on a fluid-structure coupled differential equation, performing solving with a finite element numerical method to obtain temperature rise distribution of the main driving motor of the electric aircraft in different operation conditions. According to the method, the temperature field and the fluid field of the main driving motor of the electric aircraft are subjected to whole-field solving; the same mathematic model is adopted; and the method has the advantages of high solving speed, low iterative frequency and high calculation precision.

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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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 李玉峰王森王宇鹏江秀红赵鑫徐嵩
Owner SHENYANG AEROSPACE UNIVERSITY
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