H-bridge power unit tester

Abstract

The invention discloses an H-bridge power unit tester. The H-bridge power unit tester comprises a processor module, and further comprises an indicating lamp, an optical port selection button, a display module and a plurality of optical ports which are connected with the processor module, wherein each optical port is used for being connected with an H-bridge power unit to be tested; and the processor module generates a PWM driving signal, determines one optical port for issuing the PWM driving signal according to an output signal of the optical port selection button, sends the PWM driving signal to a corresponding H-bridge power unit to be tested through the optical port, receives a feedback signal of the H-bridge power unit to be tested, processes the feedback signal according to a presetrule and controls the display state of the indicating lamp and the display content of the display module according to a processing result. According to the invention, on-site debugging personnel can rapidly determine the operation condition of the H-bridge power units and the damage degree of an IGBT, debugging efficiency is improved, and the on-site debugging time is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of electric engineering, and in particular relates to an H-bridge power unit tester. Background technique [0002] It has become a trend for frequency converters to develop in the direction of multi-level and large capacity. The three-level topology and the perfect harmonic-free topology have become relatively mature product topologies. The cascaded topology formed by back-to-back H-bridges has also been extensively studied and is becoming the mainstream topology in the inverter market. In addition, in other application directions, such as high-voltage direct current transmission, half-bridge and H-bridge topologies have also been widely studied and applied. [0003] In the Chinese invention patent application with publication number CN 106291207A, a chained SVG module testing system, platform and method are disclosed. The test platform it describes is composed of at least two SVG modules, and the SVG is t...

AI Technical Summary

Problems solved by technology

[0005] In the Chinese utility model patent application with the publication number CN209132343U, a portable H-bridge automatic test device is disclosed, but it can only test 1 to 2 power units. Whether it is in a normal state, which requires a high professional quality of the commissioning personnel, which is not conducive to promotion

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