Auxiliary power supply circuit structure for high-voltage high-power motor performance test

Abstract

The invention relates to an auxiliary power supply circuit structure for a high-voltage high-power motor performance test. The auxiliary power supply circuit structure comprises a three-phase isolation insulating transformer. The three-phase isolation insulating transformer has a primary winding and a secondary winding, wherein the primary winding is connected with an external three-phase power supply output end. The circuit structure also comprises a rectifier circuit, wherein the rectifier circuit is connected between the secondary winding and a DC voltage output end of circuit structure, and the DC voltage output end is connected with a voltage input end of an external motor to be tested. According to the auxiliary power supply structure of the high-voltage high-power motor performance test, which adopts the structure, 150VDC voltage can be output by the DC voltage output end of the secondary winding side when the primary winding is connected with an external three-phase power supply 500V / 400A, so that 340A load can operate normally so as to satisfy the requirement for the high-voltage high-power motor performance test; and the auxiliary power supply structure has the advantages of simple structure, low cost and wide application range.

Description

technical field [0001] The present application relates to the field of transformer circuit structure, in particular to the field of transformer circuit structure as an auxiliary power supply, and specifically refers to an auxiliary power supply circuit structure for high-voltage and high-power motor performance testing. Background technique [0002] In the prior art, a power cabinet used for motor performance testing can provide a power supply of 500V / 400A for testing. However, it is difficult for such power cabinets in the prior art to provide the 630V voltage required for the 630V / 330A performance test of a 200KW motor. In order to solve this problem, an ordinary Booster can also be used on the basis of the existing power cabinet to increase its output voltage to 630V, but even so, this power supply still cannot solve the problem of 330A commutation, so it is difficult to apply In the performance test of 200KW motor 630V / 330A. This has caused obstacles to the research an...

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Problems solved by technology

However, it is difficult for such power cabinets in the prior art to provide the 630V voltage required for the 630V / 330A performance test of a 200KW motor

In order to solve this problem, an ordinary Booster can also be used on the basis of the existing power cabinet to increase its output voltage to 630V, but even so, this power supply still cannot solve the problem of 330A commutation, so it is difficult to apply In the performance test of 200KW motor 630V / 330A

This has caused obstacles to the research and development of high-voltage high-power motors, hindering the further promotion and application of high-voltage high-power motors

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