KR930009900A

KR930009900A - Elevator control device in case of power failure

Info

Publication number: KR930009900A
Application number: KR1019910021185A
Authority: KR
Inventors: 이도흠
Original assignee: 지주현; 현대엘리베이터 주식회사
Priority date: 1991-11-26
Filing date: 1991-11-26
Publication date: 1993-06-21

Abstract

본 발명은 정전시에 정전임을 검출해서 정상상태에서의 운행을 정지함과 동시에 비상운전장치를 구동해서 엘리베이터를 제어하는 정전시 엘리베이터의 제어장치에 관한 것으로써, 유도전동기와, 상기 유도전동기에 흘러 들어가는 전류를 검출하는 전류검출기와, 상기 유도전동기의 회전속도를 검출하는 속도검출기와, 상기 전류검출기 및 속도검출기에 의해서 검출된 전류치 및 유도전동기의 회전속도를 받아서 상기 유도전동기의 회전시간을 제어하기 위하여 펄스폭제어부와, 상기 펄스폭제어부로부터 출력되는 펄스를 증폭해서 출력하는 인버어터구동부로 이루어진 엘리베이터의 제어장치에 있어서, 3상교류전원과, 상기 3상교류전원의 투입시에 온되는 콘택터(C1, C2, C3, C4, C5)중 콘택터(C1, C2, C3) 및 단자(R, S, T)를 개재해서 교류전원을 받아서 직류전원으로 정류하는 콘버터와, 상기 콘버터에서 정류된 직류전원을 평활화시키는 평활용 콘덴서와, 상기 평활용 콘덴서의 양단자측의 전압(전하량)이 일정치이상이 된 것을 검출하는 충전량검출기와, 입력측이 상기 콘버터의 출력측에 접속되고 출력측이 3상교류전동기에 접속되어 있는 인버터와, 상기 인버터의 에미터측에 사용전원에 의해 온되는 콘택터(C5) 및 퓨즈를 통해서 접속되고 상기 인버터의 콜렉터측에 상용전원에 의해 온되는 콘택터(C4)를 통해서 접속되어 각 기판에 구동전압을 공급하는 정전압원과, 통상의 구동시에 상기 콘버터의 직류출력을 받아서 충전되는 배터리 백업 시스템과, 정전시에 콘트롤러의 제어에 의해 온되는 자동구출운전스위치와, 상기 배터리에 충전되어 있는 직류전원을 상기 인버터를 구성하는 트랜지스터의 콜렉터 및 에미터에 인가하기 위하여 상기 자동구출운전스위치의 온에 따라 릴레이코일에 전류가 흐르면 온접촉하는 콘택터(B1, B2, B3)로 이루어진 것을 특징으로 하는 것이다.The present invention relates to a control device of an elevator in case of a power failure, which detects the power failure at the time of power failure, stops the operation in the normal state, and controls the elevator by driving the emergency operation device. Controlling the rotation time of the induction motor by receiving a current detector for detecting an incoming current, a speed detector for detecting a rotation speed of the induction motor, a current value detected by the current detector and a speed detector, and a rotation speed of the induction motor In the elevator control device comprising a pulse width control unit and an inverter drive unit for amplifying and outputting a pulse output from the pulse width control unit, a contactor which is turned on when the three-phase AC power supply and the three-phase AC power supply are applied ( AC power is supplied by applying AC power through contactors C1, C2, C3 and terminals R, S, and T among C1, C2, C3, C4, and C5. A converter rectified by a power supply, a smoothing capacitor for smoothing the DC power rectified by the converter, a charge detector for detecting that the voltage (charge amount) on both terminals of the smoothing capacitor is equal to or higher than a predetermined value, and an input side A commercial power supply connected to an inverter connected to the output side of the converter and connected to a three-phase alternating current motor, a contactor C5 and a fuse turned on by the power supply to the emitter side of the inverter, and a commercial power supply to the collector side of the inverter A constant voltage source connected via a contactor C4 turned on by the contactor to supply a driving voltage to each substrate, a battery backup system charged by receiving the direct current output of the converter during normal driving, and controlled by the controller during power failure A collection of transistors constituting the inverter includes an automatic rescue operation switch that is turned on and a DC power charged in the battery. To be applied to the emitter and is characterized in that consisting of a contactor (B1, B2, B3) which when current flows come in contact with the relay coil according to on of the automatic rescue operation switch.

Description

Elevator control device in case of power failure

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

제1도는 종래의 교류엘리베이터의 제어장치의 회로도, 제2도는 본 발명의 일실시예에 의한 정전시 엘리베이터의 제어회로도.1 is a circuit diagram of a control apparatus of a conventional AC elevator, and FIG. 2 is a control circuit diagram of an elevator during a power failure according to an embodiment of the present invention.

Claims

An induction motor, a current detector for detecting a current flowing into the induction motor, a speed detector for detecting a rotation speed of the induction motor, a current value detected by the current detector and a speed detector, and a rotation speed of the induction motor An elevator control apparatus comprising a pulse width control unit for controlling a pulse width to control a rotation time of the induction motor, and an inverter driver unit for amplifying and outputting a pulse output from the pulse width control unit, wherein the three-phase alternating current power supply is provided; The DC power supply receives an AC power through the contactors C1, C2, C3 and the terminals R, S, and T among the contactors C1, C2, C3, C4, and C5 turned on when the three-phase AC power is turned on. Rectifier, rectifying capacitor, smoothing capacitor for smoothing the DC power rectified by the converter, and voltage (charge amount) at both terminals of the smoothing capacitor. The charge amount detector for detecting the detection, an inverter having an input side connected to an output side of the converter and an output side connected to a three-phase alternating current motor, and a contactor C5 and a fuse turned on by a power source to the emitter side of the inverter. A constant voltage source connected to a collector side of the inverter through a contactor C4 turned on by a commercial power supply to supply driving voltage to each substrate, and a battery backup system charged with receiving a DC output of the converter during normal driving; And an automatic rescue operation switch which is turned on by the control of the controller at the time of power failure, and in order to apply a DC power charged in the battery to the collector and emitter of the transistor constituting the inverter. Characterized in that the contactor (B1, B2, B3) is in contact with the current flow through the relay coil When the control unit of the elevator.

The method of claim 1, wherein the constant voltage source is a power supply for a substrate drive, one side through the contactor (B1, B2, B4) from the + terminal of the battery (F) at the time of power failure, the contactor from the-terminal of the battery (E) Elevator control device in case of power failure, characterized in that the DC power is input to the constant voltage input terminal through (B3, B5).

The inrush current preventing resistor (3) according to claim 1, wherein the constant voltage source is a substrate drive power supply and is connected to the other side of the inrush current preventing resistor (R1) connected to one side of the cathode side of the converter during normal operation. Characterized in that the DC drive power supply is supplied through a contactor C4 connected to one side of the contactor A1 connected in parallel to R1) and a contactor C5 connected to one side of the anode side of the converter. Control of the city elevator.

4. The elevator control apparatus according to claim 3, wherein the contactor (A1) is an undervoltage detection contactor which is turned on above or below the rated input DC voltage of the inverter.

The contactor (B1) is a contactor which is turned on by the on operation of the automatic rescue operation switch at the time of power failure, and is connected to the + side of the battery and at the same time a resistor for preventing inrush current is connected in parallel. Elevator control device in case of power failure.

The converter according to claim 3 or 4, wherein the contactor is connected only when the charge detector for detecting the charge amount of the smoothing capacitor is equal to or higher than the rated input voltage of the charge amount of the smoothing capacitor, and the output voltage of the converter is lower than the rated voltage. In the control device of the elevator during power failure, characterized in that the output of the inverter is cut off.

The apparatus of claim 1, wherein the battery backup system comprises nine 12V batteries.

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