Multi-level inverter having dual controller

A technology of controllers and inverters, applied in control systems, AC motor control, irreversible DC power input conversion to AC power output, etc., can solve problems such as inability to drive loads accurately

Inactive Publication Date: 2012-07-04
LSIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, conventional inverters have the drawback of not being able to accurately drive the load if the controller fails

Method used

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  • Multi-level inverter having dual controller
  • Multi-level inverter having dual controller
  • Multi-level inverter having dual controller

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Embodiment Construction

[0017] Various exemplary embodiments will be described more fully hereinafter with reference to the accompanying drawings, in which some exemplary embodiments are shown. However, inventive concepts may be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this description will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art.

[0018] Unless otherwise defined, the terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. It will be further understood that, unless explicitly defined herein, terms defined, for example, in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of the related art, and should not...

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Abstract

The present disclosure relates to a multi-level inverter having a plurality of single inverter modules, the multi-level inverter including: a first controller providing a control signal to the multi-level inverter in response to voltage and frequency command based on detection of current and rotation speed of a motor; a second controller providing a control signal to the multi-level inverter in response to voltage and frequency command based on detection of current and rotation speed of a motor; and a plurality of single inverter modules converting an inputted AC power to DC power in response to the control signal from the first controller or the second controller, smoothing the converted DC power, converting the smoothed DC power to a three phase current in response to the control signal and outputting the three phase current.

Description

[0001] This application claims the prior filing date and priority of Korean Patent Application No. 10-2010-0120439 filed on November 30, 2010, which is hereby incorporated by reference in its entirety. technical field [0002] Teachings according to exemplary embodiments of the present disclosure relate generally to multilevel inverters with dual controllers, and more particularly to multilevel inverters with dual controllers configured to be composed of The first controller and the second controller in the control system are formed such that when the first controller fails, the second controller can drive the load. Background technique [0003] Generally, a predetermined driving system that drives a predetermined load uses a driver capable of driving the load. In addition, a controller is installed with the driver to control the operation of the driver so that the system accurately drives the load in response to an operation command. [0004] In a non-limiting example, in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/08
CPCH02M7/49
Inventor 朴钟齐
Owner LSIS CO LTD
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