Test method for motor under high-temperature and low-pressure environment

Abstract

The invention relates to a test method of a motor under a high-temperature and low-pressure environment and belongs to the technical field of motor characteristic testing under the high-temperature and low-pressure environment. The test method includes the following steps that: a measured motor and a standby motor are arranged in a low-pressure experimental box; the measured motor works in a motor state, and the standby motor works in a generator state; the stator current of the measured motor is gradually decreased to 0.5-times rated current from 1.5-times rated current; the stray loss of the measured motor working in the motor state is P; the measured motor works in a generator state, and the standby motor works in a motor state; the stator current of the standby motor is gradually decreased to 0.5-times rated current from 1.5-times rated current; the stray loss of the measured motor working in the generator state is P<Gs>; and the average value P<->s of the stray loss of the load of the measured motor can be obtained based on the above measured parameters and calculation results. With the test method of the invention adopted, the parameters of the motor can be detected under the high-temperature and low-pressure environment. According to the test method, and the motor can be tested under the high-temperature and low-pressure environment through adopting a double-motor back-to-back test method, and the loss values of various parameters of the motor can be calculated accurately.

Description

technical field [0001] The invention belongs to the technical field of motor characteristic testing under high temperature and low pressure environment. Background technique [0002] With the continuous exploration of human beings in the field of outer space, motors, which are essential executive and functional components in aerospace, will be more and more used in various extreme environments, such as high temperature and low pressure environments. Before using the motor, it must be adjusted The performance of the motor is tested accordingly to verify whether it can work normally in the extreme environment of high temperature and low pressure, and the performance meets the design requirements. However, the existing testing methods for electric motors are mostly suitable for normal temperature and normal pressure conditions, and cannot meet the testing requirements for electric motors under high temperature and low pressure conditions. Contents of the invention [0003] T...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a test method for motors under high temperature and low pressure environment, in order to solve the problem that most of the existing test methods for motors are suitable for normal temperature and pressure conditions, and cannot meet the test of motors under high temperature and low pressure conditions

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