KR950002174A

KR950002174A - Starting current control device of induction motor using centrifugal force

Info

Publication number: KR950002174A
Application number: KR1019930011026A
Authority: KR
Inventors: 원용규
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1993-06-16
Filing date: 1993-06-16
Publication date: 1995-01-04

Abstract

본 발명은 유도전동기(IM:Induction Motor)의 원심력을 이용해서 과도한 기동전류를 제어하는 장치에 관한 것으로, 유도전동기의 기동전류를 제어하기 위하여 Y결선을 △결선으로 변환하는 장치에 있어서, 초기 기동시에 상기 유도전동기가 Y결선을 하도록 탄성력에 의해 접점을 유지하는 제2스위치와 유도전동기가 기동후 안정상태에 이르면 원심력에 의해 접점을 유지하여 Y결선을 △결선으로 변화하는 제3스위치를 구비하여 유도전동기가 초기 기동시와 정지시에는 스프링의 탄성력에 의해 Y결선을 유지하고 안정가동상태에서는 유동레버의 원심력에 의해 △결선을 유지한다.The present invention relates to an apparatus for controlling excessive starting current by using centrifugal force of an induction motor (IM). In order to control the starting current of an induction motor, an apparatus for converting a Y connection into a? At the same time, the induction motor is provided with a second switch for holding the contact by the elastic force to make the Y connection and the third switch for maintaining the contact by the centrifugal force and changing the Y connection to the △ connection when the induction motor reaches a stable state after starting. The induction motor maintains the Y connection by the spring's elastic force during initial start-up and stop, and maintains the △ connection by the centrifugal force of the floating lever in stable operation.

Description

Starting current control device of induction motor using centrifugal force

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 4도는 본 발명에 의한 기동전류제어장치의 구성을 도시한 구성도이고, 제5A,B도는 본 발명에 의한 스위치 작동과 결선의 변경을 도시한 개략도.4 is a configuration diagram showing the configuration of the starting current control device according to the present invention, and FIGS. 5A and 5B are schematic diagrams showing switch operation and a change in wiring according to the present invention.

Claims

A device for converting a Y connection to a △ connection (or △ connection to a Y connection) after a first switch is turned on to control a starting current of an induction motor, wherein the induction motor is configured to make the Y connection at initial startup. A second switch which is turned on to maintain contact with the electrical contact of the flow lever by an elastic force of a spring positioned on a support shaft of the switch; And a third switch for maintaining the contact with the electrical contact of the flow lever positioned on the support shaft by centrifugal force caused by the rotation of the induction motor when the induction motor reaches a stable state after starting the third switch for converting the Y connection to a △ connection. Induction motor using the centrifugal force characterized in that the induction motor maintains the Y connection by the elastic force of the spring during the initial start and stop, and the △ connection by the centrifugal force of the flow lever in a stable operation state Starting current control device.

The apparatus of claim 1, wherein the centrifugal force is generated by a flow lever connected to the shaft of the induction motor and rotating together.

※ Note: The disclosure is based on the initial application.