Plateau environment simulation test bed

Abstract

The invention discloses a plateau environment simulation test bed. The plateau environment simulation test bed comprises a sealed test box body, a vacuum pump, a pressure controller and a power supply; one end of the pressure controller is connected with the sealed test box body, and the other end of the pressure controller is connected with the vacuum pump; and the pressure controller and the vacuum pump are correspondingly connected with the power supply. According to the plateau environment simulation test bed, the vacuum pump is used for extracting air from the inner part of a sealed testbox, different pressure ranges are set in the pressure controller, air pressure in the sealed test box body is controlled within a certain range, and the plateau environment simulation test bed can beused for simulating the power consumption, temperature rise, efficiency and other performance parameters of a power device under high altitude environments, and it is ensured that electrical equipment produced in plain areas can be operated reliably in plateau environments.

Description

technical field [0001] The invention relates to the technical field of reliability simulation test equipment, in particular to a plateau environment simulation test bench. Background technique [0002] As we all know, as the altitude rises, the air pressure decreases and the air density decreases, that is, the number of molecules per unit volume decreases. For power devices, the heat taken away from the surface of the power device under the same conditions decreases accordingly, making its heat dissipation conditions Deterioration causes its operating temperature to rise, and long-term operation at excessively high temperatures leads to a decrease in the life of power devices. [0003] In addition, as the air pressure decreases, the insulation strength of the air decreases, and the surface is easy to discharge and breakdown during the use of electrical equipment, resulting in insulation failure of electrical equipment; compared with the plain environment, the operating envir...

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Problems solved by technology

[0002] As we all know, as the altitude rises, the air pressure decreases and the air density decreases, that is, the number of molecules per unit volume decreases. For power devices, the heat taken away from the surface of the power device under the same conditions decreases accordingly, making its heat dissipation conditions Deterioration, causing its operating temperature to rise, and long-term operation at too high a temperature will lead to a decrease in the life of power devices

[0003] In addition, as the air pressure decreases, the insulation strength of the air decreases, and the surface is easy to discharge and breakdown during the use of electrical equipment, resulting in insulation failure of electrical equipment; compared with the plain environment, the operating environment of electrical equipment in the plateau environment becomes Poor, and become worse as the altitude rises, so it is not sure whether the electrical equipment produced in the plain can operate normally in the plateau environment

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