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Power cable breaking detection method of motor

The technology of a power cable and a detection method, which is applied in the detection field of a power cable break of a motor, can solve problems such as inability to properly diagnose and solve faults, failure to display faults, etc., to improve durability and reliability, and to prevent serious damage Effect

Inactive Publication Date: 2012-04-11
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, by using the conventional method of current control error, this method can show the fault of the current control of the inverter or the fault of overcurrent, but cannot show which phase is faulty, making it impossible to diagnose and solve it properly Fault

Method used

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  • Power cable breaking detection method of motor
  • Power cable breaking detection method of motor
  • Power cable breaking detection method of motor

Examples

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Embodiment Construction

[0022] Hereinafter, typical embodiments of the present invention will be described in detail with reference to the drawings.

[0023] As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention. Description of components not essential for explaining the present invention is omitted, and the same constituent elements are denoted by the same reference numerals in this specification.

[0024] It should be understood that the terms "vehicle" or "vehicular" or other similar terms used herein generally include electric vehicles (such as passenger cars including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles), including A variety of watercraft and boats, spacecraft, etc., and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen energy vehicles, and other alternative fuel vehicles (such as fuels deriv...

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Abstract

A power cable breaking detection method for a vehicle includes detecting currents of respective phases supplied to a three-phase motor from an inverter through at least a power cable, and a driving speed of the motor, determining whether the respective currents and the driving speed of the motor satisfy power cable breaking detection conditions, determining whether various conditions are satisfied with respect to a cable breaking sensing reference value of a current command performing cable breaking timer counting when the conditions are satisfied, and determining whether a predetermined period has elapsed such that a cable is considered broken when the predetermined period has elapsed.

Description

[0001] Cross References to Related Applications [0002] This application claims priority based on Korean Patent Application No. 10-2010-0092053 filed with the Korean Intellectual Property Office on September 17, 2010, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to a detection method for a power cable disconnection of an electric vehicle, a hybrid vehicle, a fuel cell vehicle, and the like. Background technique [0004] Electric vehicles, hybrid vehicles, fuel cell vehicles, etc. can use electric motors with permanent magnets. [0005] The motor is driven by phase current supplied from an inverter through a power cable, where the phase current is converted from a DC voltage to a 3-phase AC voltage according to a PWM (Pulse Width Modulation) signal of a controller. [0006] If a power cable connecting the inverter and the motor is disconnected or short-circuited, the motor cannot operate effectivel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02G01R31/58
CPCG01R31/021G01R31/006G01R31/343G01R31/026B60L3/0069H02H3/13B60L2210/40B60L3/04B60L15/007B60L15/20B60L2240/421B60L2240/429B60L2240/80Y02T10/7072Y02T10/70B60L50/16B60L50/51B60L58/40G01R31/58G01R31/54G01R31/52Y02T10/64Y02T10/72Y02T90/14Y02T90/12Y02T90/40
Inventor 文湘贤李永国郑镇焕
Owner HYUNDAI MOTOR CO LTD
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