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Apparatus and method for detecting short circuit of inverter system

A short-circuit detection and inverter technology, which is applied in the direction of measuring devices, emergency protection circuit devices, control systems, etc., to achieve the effects of improving short-circuit detection methods, saving costs, and preventing damage

Active Publication Date: 2015-02-25
HYUNDAI MOBIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high-performance current sensors with a large current sensing range are more expensive

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  • Apparatus and method for detecting short circuit of inverter system
  • Apparatus and method for detecting short circuit of inverter system
  • Apparatus and method for detecting short circuit of inverter system

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Embodiment Construction

[0065] The present invention can be modified in various ways, and can have various embodiments. Specific embodiments are illustrated in the drawings below, and then described in detail. This is not intended to limit the present invention to a specific embodiment, but includes all changes and equivalent quality substitutes within the concept and technical scope of the present invention.

[0066] In the description of the drawings, similar reference numerals represent similar constituent elements.

[0067] The terms first, second, etc. may be used to describe various constituent elements, but these constituent elements should not be limited to the above terms. The purpose of the above terms is only to distinguish one constituent element from other constituent elements.

[0068] For example, under the premise of not exceeding the scope of the rights of the present invention, a first constituent element may be named as a second constituent element, and a second constituent elemen...

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Abstract

The invention relates to an apparatus and a method for detecting short circuit of an inverter system. The apparatus comprises a power supply module with multiple electric power semiconductors on a substrate, a short-circuit detection part which is used for sensing voltage and detecting whether there is a short circuit by use of wire electrical impedance with certain measurement distance on the substrate formed among the electric power semiconductors, and a control part used for cutting off output of the electric power semiconductors after the short circuit detection part detects the short circuit. According to the utility model, overcurrent can be quickly cut off, and a method for detecting short circuit among high-voltage output cables of an inverter system for an electric automobile can be effectively improved.

Description

technical field [0001] The present invention relates to a converter system. Specifically, it effectively improves the short-circuit detection method of the high-voltage output cables of the converter system for electric vehicles, and timely detects the short-circuit between the converter output cables caused by the decline in the insulation performance inside the motor. Cutting off the output quickly, preventing the inverter from being damaged when the short circuit between the high-voltage cables causes overcurrent, and enhancing the safety and durability of the electric vehicle. The short-circuit detection device and method of the inverter system. Background technique [0002] Electric vehicles use permanent magnet motors as a means of drive. This permanent magnet motor is driven by an inverter that converts a DC voltage into a three-phase voltage through a PWM (Pulse Width Modulation) signal from a controller, and is driven by a voltage and / or current transmitted through ...

Claims

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Application Information

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IPC IPC(8): G01R31/02
CPCG01R19/16538G01R31/42H02H3/08H02H7/122H02P27/04
Inventor 张芝瑛
Owner HYUNDAI MOBIS CO LTD