Total power aging test circuit for current transformer or frequency transformer

Abstract

The embodiment of the invention discloses a total power aging test circuit for a current transformer or a frequency transformer. The total power aging test circuit comprises a filter reactor, a boosting transformer and a direct-current power supply, wherein the direct-current power supply is communicated with two ends of a bus capacitor; the input end of the boosting transformer is communicated with the output end of a three-phase inverter through the filter reactor, and the output end of the boosting transformer is communicated with the input end of the three-phase inverter. The total power aging test circuit also comprises an aging test module arranged in a controller and an aging test triggering unit arranged on human interface device. The aging test triggering unit is used for controlling the running state of the aging test module, and the aging test module is used for controlling the current transformer or the frequency transformer for an aging test. The total power aging test circuit can effectively reduce the energy consumption in the aging test process, simplifies the structure of a test system, and reduces the maintenance cost of the system.

Description

technical field [0001] The invention relates to the technology of converters or frequency converters, in particular to a full-power aging test circuit for converters or frequency converters. Background technique [0002] Manufacturers of converters or frequency converters need to test various performances of their products before leaving the factory. The aging test is to simulate the electrical characteristics of the actual load and operate at full load to test the inverter and drive circuit of the converter or frequency converter. Full-power aging test is a very important part of the reliability test of converters or frequency converters, especially for high-voltage and high-power converters and frequency converters. At present, the full-power aging test circuits that use more high-power converters or frequency converters are mainly divided into three categories. [0003] The invention patent with application number CN201220260394.0 provides the first type of full-power a...

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Problems solved by technology

[0006] The technical problem to be solved by the embodiments of the present invention is to provide a frequency converter or frequency converter for the defects of high energy consumption, high cost, or complex system of the full-power aging test circuit of the current converter or frequency converter in the prior art. The full-power aging test circuit of the converter can save energy, reduce harmonic circulation, and has low cost and simple structure

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