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Method of detecting state of power cable in inverter system

A technology of power cables and inverters, which is applied in the field of inverter systems to achieve the effect of improving safety

Inactive Publication Date: 2014-12-03
LSIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] Also, when the power cables are disconnected and the connectors are loose, workers or drivers approaching the vehicle while the DC side capacitors are being charged can cause huge accidents

Method used

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

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Embodiment Construction

[0038] The following merely describes the principles of the embodiments. 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 and not limit the scope of the example.

[0039] In addition, not only principles, viewpoints, and embodiments, but all specific descriptions of exemplary embodiments should be understood to include structural and functional equivalents. In addition, it should be understood that equivalents include not only known equivalents, but also equivalents to be developed in the future, that is to say, all invented means for performing the same function regardless of their structures.

[0040] figure 2 is a block diag...

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Abstract

Provided is a method of detecting a state of a power cable in an inverter system. The method includes detecting a direct current (DC)-link voltage value of a DC-link capacitor included in an inverter, detecting a battery voltage value of a battery supplying a DC power to the inverter, comparing the DC-link voltage value with the battery voltage value, and determining the state of the power cable connecting the inverter to the battery to be abnormal when a difference between the DC-link voltage value and the battery voltage value is out of a preset range.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Application No. 10-2013-0056762 filed on May 20, 2013 under 35 U.S.C. 119 and 35 U.S.C. 365, the entire disclosure of which is hereby incorporated by reference. Background technique [0003] The present disclosure relates to an inverter system, and more particularly to a method of detecting the state of a power cable in an inverter system, which method is capable of detecting the state of the power cable and forcibly discharging in a DC link capacitor when a disconnection occurs of residual energy. [0004] The inverter system is electric / electronic sub assemblies (ESAs) that convert high-voltage direct current into alternating current or direct current, and is a main component included in an electric motor of a vehicle. [0005] The electric motor is used as a driving unit in an environment-friendly vehicle, and the electric motor is driven by the phase current transmitted t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/40G01R31/02G01R31/58
CPCB60L11/1864B60L11/1803B60L3/04B60L3/0046B60L3/0069B60L15/007B60L2240/547H02H7/122H02M2001/322G01R31/02H02H3/28H02M7/5387B60L2240/549B60L3/003G01R31/021H02H5/10B60L50/51B60L58/21G01R31/54G01R31/52B60L58/10Y02T10/70Y02T10/64G01R31/58H02M1/322G01R31/08G01R19/165
Inventor 崔基英
Owner LSIS CO LTD
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