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Method of controlling dual inverter

An inverter and overmodulation technology, which is used in the control of electromechanical brakes, control systems, and generators to achieve the effect of improving controllability

Active Publication Date: 2018-06-01
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Embodiments of the present invention can solve or alleviate the above-mentioned problems

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  • Method of controlling dual inverter
  • Method of controlling dual inverter
  • Method of controlling dual inverter

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Experimental program
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Effect test

Embodiment Construction

[0039] A description will be given of a dual inverter control method according to various embodiments of the present invention with reference to the accompanying drawings.

[0040] figure 1 is a simplified circuit diagram of a dual-inverter system applying a dual-inverter control method according to an embodiment of the present invention.

[0041] refer to figure 1 , the inverter system applying the dual inverter control method according to the embodiment of the present invention may include a DC power supply unit 100 (for example, a battery), a motor 200, and an inverter system for converting the DC power of the DC power supply unit 100 into AC. and supply AC power to the two inverters 300 and 400 of the motor 200 .

[0042] figure 1 Each of the two inverters 300 and 400 shown is connected to the DC power supply unit 100 via a common DC link and is supplied with DC power, and may include 6 switching elements so that two switches are allocated per phase Components to provi...

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Abstract

A dual inverter control method is capable of improving power efficiency of an inverter and a motor by controlling a dual inverter through 6-step control to apply a voltage to the motor in a motor driving system using the dual inverter. The dual inverter control method for controlling first and second inverters having output terminals commonly connected to a motor includes comparing all voltage commands for driving the motor with the magnitude of a DC voltage commonly applied to the first and second inverters; and generating a first voltage command with respect to an output of the first inverter and a second voltage command with respect to an output of the second inverter by selectively applying high gain over voltage modulation (HOVM) depending on a comparison result.

Description

technical field [0001] The invention relates to a double inverter control method. Background technique [0002] As global warming and environmental pollution have become serious issues, research and development of environmentally friendly vehicles that can minimize environmental pollution is actively carried out, so the market is gradually expanding. As eco-friendly vehicles, electric vehicles, hybrid electric vehicles and plug-in vehicles are being sold around the world, using electric motors that generate driving power using electrical energy instead of engines that generate driving power by burning fossil fuels. [0003] Most eco-friendly vehicle technologies using electric energy generate vehicle driving force by supplying electric energy stored in a high-voltage battery of the vehicle to an electric motor. [0004] Such motor drive control used in eco-friendly vehicles requires an inverter for converting DC power supplied by a battery into multi-phase AC power required...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/22H02P27/08
CPCH02P21/22H02P27/08H02P2205/01H02P21/06H02P21/141H02P27/12Y02T10/70B60L50/51H02M7/493B60L2210/46B60Y2200/90H02P2207/07H02P21/12
Inventor 朴株英郭武信申昊埈裴秀炫安埈模金成奎
Owner HYUNDAI MOTOR CO LTD