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Apparatus and method for controlling driving of switching device for power converter

A switching device and power control technology, which is applied in the direction of output power conversion device, converter type, AC power input conversion to DC power output, etc., can solve large conduction loss, reduce inverter efficiency, and hinder effective driving of switching devices And other issues

Pending Publication Date: 2020-12-18
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, lowering the gate voltage prevents efficient driving of switching devices
This is because the lower gate voltage increases the voltage drop between the collector terminal and the emitter terminal of the switching device when current flows in the switching device, which results in larger conduction losses and in turn degrades the inverter efficiency, leading to a negative impact on vehicle fuel efficiency

Method used

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  • Apparatus and method for controlling driving of switching device for power converter
  • Apparatus and method for controlling driving of switching device for power converter
  • Apparatus and method for controlling driving of switching device for power converter

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Embodiment Construction

[0024] The following description is merely exemplary in nature and is not intended to limit the disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

[0025] In a vehicle using an electric motor as a driving source, an inverter may be provided as a power converter that generates alternating current (AC) power to be supplied to the electric motor.

[0026] refer to figure 1 , the inverter denoted by reference numeral 3 includes a three-phase power module 31 for controlling the flow of direct current (DC) power for the motor 1 applied from the power source 2 to generate AC power. Each power module 31 is composed of two switching devices 311 connected in series. Each switching device 311 may be an insulated gate bipolar transistor (IGBT), a field effect transistor (FET), etc., which may be turned on under the control of a gate-emitter voltage Vge.

[0027] Eac...

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PUM

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Abstract

An apparatus and a method for controlling a switching device for a power converter are provided. The apparatus includes a gate driver configured to apply a first driving voltage and a second driving voltage to the gate terminal based on one turn-on of the switching device, wherein the first driving voltage and the second driving voltage have different values; to turn on the switching device; and acontroller configured to control the gate driver such that the gate driver applies the second driving voltage to the gate terminal after the first driving voltage is applied to the gate terminal.

Description

technical field [0001] The present disclosure relates to an apparatus and method for controlling the driving of a switching device of a power converter. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] Generally, in a vehicle employing an electric motor as a driving source, an inverter is provided to generate alternating current (AC) power to be supplied to the electric motor. The inverter includes a power module that controls current applied from a motor power source, and the power module is composed of switching devices such as insulated gate bipolar transistors (IGBTs). [0004] A switching device is driven by a voltage applied to its gate terminal such that current can flow between the collector and emitter terminals of the switching device. [0005] When the voltage level applied to the gate terminal is low, even if a short circuit occurs in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/08
CPCH02M1/08H03K17/063H03K17/122H03K17/163H02M7/53871H02M1/32H02P27/08H02M7/219B60L2210/46Y02T10/72H03K17/567
Inventor 郑冈镐张智雄申相哲
Owner HYUNDAI MOTOR CO LTD