System and method for protecting inverter in vehicle from overvoltage

An inverter and overvoltage technology, applied to reversible conversion equipment, vehicle components, vehicle energy storage, etc., can solve problems such as inverter damage, and achieve the effect of increasing driving time

Pending Publication Date: 2021-10-26
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, damage to the inverter due to overvoltage

Method used

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  • System and method for protecting inverter in vehicle from overvoltage
  • System and method for protecting inverter in vehicle from overvoltage
  • System and method for protecting inverter in vehicle from overvoltage

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Embodiment Construction

[0033] It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein generally includes motor vehicles such as passenger automobiles including sport utility vehicles (SUVs), vans, vans, various commercial vehicles , including various boats, ships, aircraft, etc., and including hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (such as fuels derived from non-fossil energy sources ). As referred to herein, a hybrid vehicle is a vehicle that has two or more sources of power, such as both gasoline-powered and electric-powered vehicles.

[0034] Although the exemplary embodiment is described as utilizing a plurality of units to perform the exemplary process, it should be understood that the exemplary process may also be performed by one or more modules. Additionally, it should be understood that the term controller / control unit refers to a hardware device inclu...

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Abstract

A system and method for protecting a vehicle inverter from overvoltage. The system includes a first inverter having switching elements and converting energy from an energy storage device into AC power; a first motor driven by receiving the converted AC power; a second inverter connected in parallel with the first inverter, including a switching elements, and converting energy from the energy storage device into AC power; a second motor driven by receiving the converted AC power; a first capacitor connected in parallel between the first inverter and the energy storage device and storing electric energy of the first motor during regenerative braking; and a controller which turns off a relay connecting the energy storage device and the motor when a voltage of the first capacitor is equal to or greater than a predetermined voltage and operates the switching elements in the inverters in response to first and second current commands.

Description

technical field [0001] The present invention relates to a system and method for protecting an inverter in a vehicle from overvoltage. Background technique [0002] In order to cope with the recent air pollution and oil depletion crises, technologies regarding eco-friendly vehicles using electric energy as power for the vehicles are being actively developed. Eco-friendly vehicles include hybrid electric vehicles, fuel cell electric vehicles, and electric vehicles. [0003] such as related technology figure 1 As shown, an electric vehicle with a disconnector on the front wheels and two drive motors includes two inverter systems for driving the two motors. In such electric vehicles, when the circuit breaker is released, the connection between the motor and the drive system is released, and the front wheel motors are in an unloaded state. Specifically, the electric energy of the front wheel motor generated along with the diverge of the front wheel motor flows too much to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00B60L15/00B60L3/04B60L50/40H02H7/122H02H3/20
CPCB60L3/003B60L3/0046B60L15/007B60L3/04B60L50/40H02H7/122H02H3/20H02M1/32H02M7/5387H02M7/5395H02M7/797H02M7/81Y02T10/70B60L50/60B60L2220/42B60L2240/527B60L7/16H02H7/1222Y02T10/64B60L50/51B60L7/14B60Y2400/3086B60Y2200/91H02H7/1227H02M7/08H02M1/008B60L2210/40H02H1/0007
Inventor 全宰德韩南九
Owner HYUNDAI MOTOR CO LTD
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