Advantages and disadvantages of temperature rise in brushless DC motors.

Advantages and disadvantages of temperature rise in brushless DC motors.

1. The use of two-dimensional thermal stress for the analysis of permanent magnet brushless DC motors and thermal analysis did not take into account the radial transformation of the motor.

2. The thermal calculation of a rare earth permanent magnet brushless DC motor was carried out using fluid structure coupling. Compared with scientific research on the harm of wind blade specifications to motor temperature rise, the method of using ventilation openings to reduce motor temperature rise was selected.

3. Based on the coupling of magnetic field and thermal stress, the wear and tear distributed in the three-dimensional magnetic field is used as a thermal source to assign thermal stress for temperature rise calculation, solving the problem of wear and tear distribution throughout the entire process of the permanent magnet DC brushless motor thermal meter, making wear and tear distribution more specific, but ignoring the harm of temperature changes to wear and tear during specific operation.

For the calculation of the temperature characteristics of raw materials during the entire process of rare earth permanent magnet brushless DC motors, which poses a challenge to the damage caused by wear and tear, a relative temperature rise analysis method is selected to complete the calculation of the temperature rise of rare earth motors.

4. The traditional method is used to calculate various losses of the motor and convert them into thermal relative density. The thermal relative density is loaded into the relative thermal relative density under thermal stress, and the thermal relative density is loaded into the relative thermal position under thermal stress. This method calculates the losses at the original temperature and ignores the changes in the thermodynamic properties of the raw materials caused by temperature rise in the time dimension.