Simulation method and device of motor temperature field

Abstract

The invention provides a simulation method and device of a motor temperature field. The simulation method comprises a three-dimensional model of a motor is established; grid partitioning is conductedon the three-dimensional model, heat-transfer characteristic valuation is conducted on each part of the motor; the sub-loss of each part of the motor is determined according to electromagnetic field distribution and vortex field distribution; the mechanical loss of the motor is determined according to the flowing state of air gap oil bath liquid in the motor and dynamic and static loads of an alignment bearing of the motor; the sub-losses and the mechanical loss are converted into heat generation rates; valuation is conducted on each part of the motor according to material characteristics andthe heat generation rates, and temperature field distribution results of all the parts of the motor are calculated. The temperature change situation of each part in the motor, especially the key part,can be obtained, real-time monitoring and analysis can be conducted on the temperature of each part in the motor, the authenticity and comprehensiveness of the motor temperature field simulation results are improved, and the simulation method and device have the guidance effect on structural optimization of the motor and adjustment of an actual operation mode.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a method and device for simulating the temperature field of a motor. Background technique [0002] At present, when considering the temperature change of the submersible permanent magnet motor in the existing industry, most of them adopt the method of overall calculation and simulation, that is, the average temperature rise of each part in the motor is used to measure the temperature change of the whole motor; however, This overall measurement method does not reflect the real heating of the motor; even when the overall temperature rise of the motor is not obvious, severe heating of individual key parts will greatly reduce the service life and stability of the motor. [0003] Aiming at the problem of poor authenticity and comprehensiveness of the simulation results of the above-mentioned existing motor temperature field simulation methods, no effective solution has been proposed ye...

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Problems solved by technology

[0002] At present, when considering the temperature change of the submersible permanent magnet motor in the existing industry, most of them adopt the method of overall calculation and simulation, that is, the average temperature rise of each part in the motor is used to measure the temperature change of the whole motor; however, This overall measurement method does not reflect the real heating of the motor; even when the overall temperature rise of the motor is not obvious, severe heating of individual key parts will greatly reduce the service life and stability of the motor

[0003] Aiming at the problem that the above-mentioned existing motor temperature field simulation method has poor authenticity and comprehensiveness of the simulation results, no effective solution has been proposed

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