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Three-phase power control system and its control method

A control system, three-phase power technology, used in control/regulation systems, output power conversion devices, conversion of AC power input to DC power output, etc. Electrical separation, etc.

Inactive Publication Date: 2007-02-21
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if a fault occurs while the system is running, the power supply and the motor cannot be electrically separated, and it is very difficult to ensure the stability and reliability of the equipment group

Method used

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  • Three-phase power control system and its control method
  • Three-phase power control system and its control method
  • Three-phase power control system and its control method

Examples

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Embodiment Construction

[0037] Reference will now be made in detail to examples of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like parts throughout. The following description explains examples of the present invention by referring to the drawings.

[0038] image 3 is a schematic circuit diagram showing the structure of the three-phase power control system according to the first example of the present invention. The general explanation is to explain the components having the same functions as those described in the conventional three-phase power control system, mainly explaining their special structures.

[0039] As shown in the figure, the three-phase power control system according to the first example of the present invention includes a first connector 200-1 for supplying or disconnecting a three-phase AC voltage 100-1; turning on / off the first connector 200 A first driver 210-1 for the contact point of -1; a thr...

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Abstract

The invention provides a three-phase power control system, wherein, by limiting inrush current generated when a three-phase AC voltage is initially applied as well as by breaking the three-phase AC voltage applied between a power source and a load, it is possible to ensure stability and reliability of an equipment set, and a control method using the same. The three-phase power control system provides a three-phase AC voltage and controlls a load. The three-phase power control system includes a three-phase rectifier for rectifying a three-phase AC voltage into a DC voltage; a first contactor for providing or breaking the three-phase AC voltage to the three-phase rectifier; a charging unit for charging the DC voltage rectified through the three-phase rectifier; and a bypass circuit for bypassing the first contactor and providing the three-phase AC voltage to the charging unit, the bypass circuit comprising: a current limiter placed in the bypass circuit for limiting bypassed current which flows into the charging unit; and a second connector placed in the bypass circuit for providing or breaking a bypassed DC voltage to the charging unit.

Description

[0001] Cross-application for application [0002] This application claims priority to Patent Application No. 2005-75877 filed with the Korean Intellectual Property Office on August 18, 2005, the disclosure of which is incorporated herein by reference. technical field [0003] The present invention relates to a three-phase power control system and a control method using it, in particular, to a three-phase power control system for rectifying three-phase AC voltage and providing rectified DC voltage to a load and a control method using it. Background technique [0004] figure 1 is a schematic circuit diagram showing the structure of a conventional three-phase power control system. [0005] As shown in this figure, the conventional three-phase power control system aims at rectifying the three-phase AC voltage into a DC voltage through a diode rectification circuit and supplying the DC voltage to the load (La) of the equipment group. A conventional three-phase power control sys...

Claims

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Application Information

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IPC IPC(8): H02M7/12H02M5/44
CPCH02M1/36H02M7/062G05F1/66
Inventor 李尚泽
Owner SAMSUNG ELECTRONICS CO LTD
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