System and method for diagnosing short circuit and open circuit in power conversion system

A multi-level inverter and receiver technology, applied in the direction of measuring electrical variables, measuring devices, instruments, etc., to achieve the effect of increasing speed and accuracy, quick identification and immediate solution, and reducing downtime

Inactive Publication Date: 2015-06-24
GE ENERGY POWER CONVERSION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution only allows simultaneous testing of up to two circuit signals

Method used

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  • System and method for diagnosing short circuit and open circuit in power conversion system
  • System and method for diagnosing short circuit and open circuit in power conversion system
  • System and method for diagnosing short circuit and open circuit in power conversion system

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Embodiment Construction

[0037] While the invention is described herein in connection with illustrative embodiments for particular applications, it should be understood that the invention is not limited thereto. Those skilled in the art who read the rationale presented herein will recognize additional modifications, applications, and embodiments within the scope of the invention and in additional fields in which the invention has significant utility.

[0038] Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first", "second", etc. as used herein do not denote any order, number or importance, but are used to distinguish one element from another. Also, the term "a" does not indicate a limitation of quantity, but rather indicates the presence of at least one of the referenced items. The term "or" is meant to be inclusive and means any one, any one, several or a...

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Abstract

The invention relates to a system and method for diagnosing a short circuit and an open circuit in a power conversion system. The system is used for isolating and detecting an electric fault device in a high-voltage multi-level inverter. The system comprises an input driver, a fault testing system, a receiver device and a result displayer, wherein the input driver is driven by a controller, and the receiver device receives data and diagnosis information from the fault testing system. The invention further provides the method for isolating and detecting a short circuit or an opening circuit or a fiber fault inside an electric device in the high-voltage multi-level inverter.

Description

technical field [0001] The present invention relates to testing electrical devices. More specifically, the present invention relates to detecting and isolating electrical devices with shorts or opens within H-bridge converters. Background technique [0002] Generally, a power conversion circuit refers to any circuit that realizes the change of electric power, such as an inverter, a rectifier, a switching bridge, and the like. Power conversion circuits use a variety of techniques such as pulse width modulation (PWM) to generate a reasonable regeneration of alternating current (AC) power at a desired voltage and frequency. Power conversion circuits find application in many devices such as AC motor drives, variable frequency drives, and high voltage power transmission, among others. [0003] Power conversion circuits and other electronic systems often use special drivers and receivers, such as low-voltage differential distribution signaling (LVDS) drivers and receivers, to tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02
Inventor L.秦R.S.张K.陈朱丹
Owner GE ENERGY POWER CONVERSION TECH
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