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Short circuit detection device and method of inverter system

A technology of short-circuit detection and converters, which is applied in the direction of measuring devices, emergency protection circuit devices, control systems, etc., to improve short-circuit detection methods, save costs, and prevent damage

Active Publication Date: 2018-09-25
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

Method used

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  • Short circuit detection device and method of inverter system
  • Short circuit detection device and method of inverter system
  • Short circuit detection device and method 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 a short-circuit detection device and a method thereof for a converter system. The short-circuit detection device comprises: a power supply module on which a plurality of power semiconductors are arranged on a substrate; Conductor impedance, induced voltage detection of short-circuit detection part; after detection of short-circuit, the control part that cuts off the output of multiple power semiconductors. According to the invention, the occurrence of overcurrent can be quickly cut off, and the short-circuit detection method between the high-voltage output cables of the converter system of the electric vehicle is 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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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/02
CPCG01R19/16538G01R31/42H02H3/08H02H7/122H02P27/04
Inventor 张芝瑛
Owner HYUNDAI MOBIS CO LTD