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Motor drive system for hybrid vehicle and method for controlling the same

A technology of hybrid electric vehicles and drive systems, applied in traction driven by engines, hybrid electric vehicles, traction of AC induction motors, etc., can solve problems such as increase, controller failure, and durability reduction

Active Publication Date: 2011-06-08
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to apply power to the IGBT gate drive circuit to properly maintain the IGBT in the off state, which reduces the durability of the gate drive circuit
In addition, unnecessary components have to work all the time, and during long-term charging, the durability of the controller to prevent IGBT failure may be reduced, and the possibility that the controller may fail is increased

Method used

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  • Motor drive system for hybrid vehicle and method for controlling the same
  • Motor drive system for hybrid vehicle and method for controlling the same
  • Motor drive system for hybrid vehicle and method for controlling the same

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Embodiment Construction

[0035] In a first aspect, the invention features an electric motor drive system for a hybrid vehicle, the system comprising: first and second electric motors for driving the vehicle; first and second inverters; a DC battery for outputting a DC voltage; for boosting the DC voltage from the DC battery and supplying the boosted voltage to the first and second inverters, or lowering the DC voltage from the first inverter DC voltage from the first and second inverters and supply the reduced voltage to a voltage converter of the DC battery; first and second main relays connected between the DC battery and the voltage converter; and through the first and second Two auxiliary relays are connected between the DC battery and the first and second main relays, the DC converter and the electric air conditioner inverter as non-drive train components.

[0036] In another aspect, the invention features a method of controlling an electric motor drive system for a hybrid vehicle, the method inc...

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Abstract

The present invention relates to a motor drive system for a hybrid vehicle and a method for controlling the same, which can prevent a counter electromotive force generated from a motor during turn-off of a main relay from being applied to non-powertrain components. The motor drive system includes first and second motors for driving the vehicle; first and second inverters for driving the first and second motors, respectively; a DC battery for outputting a DC voltage; a voltage converter for increasing the DC voltage from the DC battery and supplying the stepped up voltage to the first and second inverters or for decreasing the DC voltage from the first and second inverters and supplying the stepped down voltage to the DC battery; first and second main relays connected between the DC battery and the voltage converter; and a DC converter and an electric air conditioner inverter as non-powertrain components connected between the DC battery and the first and second main relays through first and second auxiliary relays.

Description

technical field [0001] The present disclosure generally relates to an electric motor drive system for a hybrid vehicle and a method for controlling the same. More particularly, the present invention relates to a motor drive system for a hybrid vehicle and a method for controlling the same, which can properly prevent counter electromotive force generated by the motor from being applied to, for example, a DC converter during the off period of the main relay. And on the non-drive train components of the electric air conditioner inverter, so as to protect the non-drive train components and prevent the occurrence of failure. Background technique [0002] A hybrid vehicle employs an electric motor as an auxiliary power source along with a gasoline engine to provide reduction of exhaust gas and improvement of fuel efficiency. [0003] When the engine is operating at a low efficiency state, the electric motor is driven by the electric power of the battery to appropriately improve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20H02P5/74B60L50/16
CPCB60L3/003B60L15/20B60W10/30B60W20/50B60L3/04B60L1/00Y02T10/7225B60W10/08B60W20/00H02P5/74Y02T10/7241B60L11/14Y02T10/7077B60L9/18Y02T10/648B60L3/00B60L2210/14B60H1/22Y02T10/64Y02T10/72
Inventor 宋泓锡
Owner HYUNDAI MOTOR CO LTD
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