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Method and apparatus for monitoring electrical ground isolation in powertrain system

A technology for electrical grounding and insulation faults, which is applied in the field of electrical systems and can solve problems such as electrical insulation loss

Active Publication Date: 2014-03-12
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Faults in high-voltage buses and on-board electrical installations cause loss of electrical insulation

Method used

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  • Method and apparatus for monitoring electrical ground isolation in powertrain system
  • Method and apparatus for monitoring electrical ground isolation in powertrain system
  • Method and apparatus for monitoring electrical ground isolation in powertrain system

Examples

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Embodiment Construction

[0058] Referring now to the accompanying drawings, the display content therein is only for illustrating specific exemplary embodiments, not for the purpose of limiting these exemplary embodiments. figure 1 An embodiment of a vehicle 100 including a hybrid powertrain constructed in accordance with the concepts described herein is shown. An exemplary hybrid power system includes an internal combustion engine 10 mechanically coupled to a hybrid transmission 20 through an input member 12. The hybrid transmission 20 is configured to respond to the operator's torque request and other power requirements in the hybrid power system, in the input member 12, the first and second torque members 30 and 40, and the output member coupled to the drive train 90 To transmit torque between 64, the drive train 90 includes one or more traction wheels 92. The hybrid transmission 20 selectively operates in one of a plurality of fixed gears, a neutral gear, and a continuously variable gear state in or...

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PUM

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Abstract

A method for monitoring operation of a vehicle including a high voltage electrical system including an electrical energy storage device electrically connected to switching circuits of an inverter device via a high voltage bus, the inverter device configured to transfer electric power to an electric machine via activation of a plurality of switch devices, includes monitoring electrical ground isolation of the high voltage electrical system during ongoing operation of the vehicle, detecting an electrical ground isolation fault in the high voltage electrical system, and detecting a location of the electrical ground isolation fault associated with at least one of the electrical energy storage device, the high voltage bus, the inverter device, and the electric machine subsequent to a vehicle key-off event.

Description

Technical field [0001] The invention belongs to an electrical system used in a power system, wherein the power system includes a hybrid power system. Background technique [0002] The content described in this section only provides background information related to the present invention, which may not constitute prior art. [0003] Vehicles use powertrain systems to generate tractive torque, including a hybrid powertrain architecture that transmits torque to output components through a transmission. The known hybrid powertrain architecture includes an internal combustion engine and a torque machine, which transmits torque to an output component through a transmission device. The output member may be coupled to a drive train for a motor vehicle in order to transmit tractive torque to the output member. The torque machine may include an electric machine configured to operate as a torque motor and an electric generator. [0004] The known hybrid powertrain architecture includes a dir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/02G01R31/08G01R19/00
CPCY02T10/7077G01R31/025B60L11/123Y02T10/6217B60L3/0069B60L2200/26B60L15/007Y02T10/70B60L11/14B60L50/16B60L50/61G01R31/52H02H3/042Y02T10/62Y02T10/64Y02T10/7072H01H3/16
Inventor H·J·鲍尔W·D·王J·E·塔钦斯基
Owner GM GLOBAL TECH OPERATIONS LLC
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