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Method of detecting disconnection state of power cable in inverter system

A power cable, disconnected state technology, applied in the direction of measuring current/voltage, emergency protection device for automatic disconnection, measuring electricity, etc., can solve the problems of wrong operation disconnection detection unit, space and price limitations, etc. The effect of misuse

Active Publication Date: 2014-01-29
LSIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, since the disconnection detection unit of the power cable 10 detects the disconnection state of the power cable 10 in the form of hardware, the above-mentioned disconnection detection unit has limitations in terms of space and price.
[0013] In addition, due to objective reasons, the above-mentioned disconnection detection unit of the power cable 10 may be erroneously operated

Method used

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  • Method of detecting disconnection state of power cable in inverter system
  • Method of detecting disconnection state of power cable in inverter system
  • Method of detecting disconnection state of power cable in inverter system

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Embodiment Construction

[0035] The principle of the embodiment will be described below. Therefore, although not specifically illustrated and described in this specification, those skilled in the art can understand the principles of the embodiments, and can invent various devices within the concept and scope of the embodiments. In addition, in principle, the conditional terms and examples mentioned in this specification should be clearly intended to understand the idea of ​​the example, but not to limit the scope of the example.

[0036] In addition, it is to be understood that all specific descriptions teaching specific embodiments, as well as principles, aspects, and examples, are intended to encompass both structural and functional equivalents. In addition, it should be understood that equivalents may include equivalents to be developed in the future as well as known equivalents, and may include all means invented for performing the same function regardless of the structure thereof.

[0037] fig...

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Abstract

Disclosed is a method of detecting the disconnection state of a power cable in an inverter system. The method includes detecting a disconnection state of a first power cable by using a difference value between a battery voltage and a DC-link voltage, detecting a disconnection state of a second power cable by using a driving speed, a phase current instruction value, and an actual phase current value of a motor, and stopping driving of the motor if one of the first and second power cables is detected as being disconnected.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2012-0076683 filed on Jul. 13, 2012 under 35 U.S.C. 119 and 35 U.S.C. 365, the entire contents of which are hereby incorporated by reference. technical field [0003] Embodiments relate to inverters. In particular, embodiments relate to a method of detecting an unconnected state of a high voltage cable constituting an inverter. Background technique [0004] Inverter systems used as motor controllers in eco-friendly vehicles are electrical / electronic substrate assemblies (ESAs) that convert high-voltage direct current (DC) into alternating current (AC) or direct current for the purpose of controlling the motor. The inverter system is a main part of the electric motor constituting the vehicle. [0005] The above-mentioned eco-friendly vehicle uses a permanent magnet motor as a driving unit. The motor, which is applied to the environment-friendly ve...

Claims

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Application Information

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IPC IPC(8): G01R31/02G01R31/58
CPCH02J7/0036H02H5/10H02P3/02H02H7/122G01R31/54G01R31/58G01R31/08G01R31/42G01R19/10
Inventor 金光云
Owner LSIS CO LTD