KR890005105B1 - Arrangement for starting electric motor - Google Patents

Arrangement for starting electric motor Download PDF

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KR890005105B1
KR890005105B1 KR1019870007184A KR870007184A KR890005105B1 KR 890005105 B1 KR890005105 B1 KR 890005105B1 KR 1019870007184 A KR1019870007184 A KR 1019870007184A KR 870007184 A KR870007184 A KR 870007184A KR 890005105 B1 KR890005105 B1 KR 890005105B1
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South Korea
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power
circuit
motor
circuit unit
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KR1019870007184A
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Korean (ko)
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KR890003105A (en
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양태건
임순호
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주식회사 한국 엠이씨
이승신
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Ac-Ac Conversion (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

The drive circuit for power saving type motor acquires the power saving effect by using thyristor which automatically controls voltage and current of the load. The circuit comprises a power switching circuit, switching control circuit, and converting feedback circuit, etc. The drive circuit controls each phase simulataneously, and has excellent functions to be able to acquire the power saving effect in the system in which load is changed severely.

Description

절전형 모우터의 구동회로Power-saving motor drive circuit

제1도는 본 발명의 회로도.1 is a circuit diagram of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10,20,30 : 전원스위칭회로부 40,50,60 : 스위징 제어회로부10,20,30: power switching circuit part 40,50,60: switching control circuit part

70 : 변환궤환 회로부 R,S,T : 3상 교류 전원단자70: conversion feedback circuit part R, S, T: three phase AC power terminal

M : 모우터 SCR1-SCR6: 다이리스트M: Motor SCR 1 -SCR 6 : Die List

TC1-TC3: 트라이악 OiS1-OiS3:옵토아이솔레이터TC 1 -TC 3 : Triac OiS 1 -OiS 3 : Optoisolator

T1: CT트랜서 VR1-VR5: 가변저항T 1 : CT transformer VR 1 -VR 5 : Variable resistor

cds1-cds3: 광도전셀 LED1-LED3: 발광다이오드cds 1 -cds 3 : Photoconductive cell LED 1 -LED 3 : Light emitting diode

Di1-Di3: 다이액 C1-C7: 콘덴서Di 1 -Di 3 : Diac C 1 -C 7 : Condenser

D1-D7: 다이오드D 1 -D 7 : Diode

본 발명은 절전형 모우터의 구동회로에 관한 것으로서, 특히, 다이리스터를 사용하여 부하의 전압전류를 자동으로 제어하여 모우터의 절전효과를 얻을 수 있도록한 구동회로에 관한것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving circuit of a power saving motor, and more particularly, to a driving circuit which achieves a power saving effect of a motor by automatically controlling the voltage and current of a load by using a thyristor.

종래의 모우터 절전기에 있어서는 , 지금까지 많은 모우터의 절전기가 생산되어 시판되고 있으나, 이는 회로가 매우 복잡하기 때문에 고장률이 많고, 또한 조정하는 데 문제점이 노출되어 왔으며, 특히 3상에서는 각상의 하나하나를 별도로 조정하여야 하는 불편한 문제점이 제기되었던 것이다.In the conventional motor power saver, many motor power savers have been produced and marketed so far. However, since the circuit is very complicated, the failure rate is high and the problem of adjustment has been exposed, especially in each phase. It was an inconvenient problem to adjust separately.

본 발명은 이러한 문제점을 해결하기 위하여, 전원스위치회로부, 스위칭제어회로부 및 변환궤환회로부등을 이용한 간단한 회로구성으로, 각상을 동시에 조절할수 있도록 하고, 또한 부하의 변동이 심한 어떤기계에도 월등한 성능을 발휘할수 있도록 하여 모우터의 절전효과를 얻을수 있도록 안출한 것으로, 이를 첨부한 도면에 의하여 상세히 설명하면 다음과 같다.In order to solve this problem, the present invention provides a simple circuit configuration using a power switch circuit unit, a switching control circuit unit, and a conversion feedback circuit unit, so that each phase can be adjusted simultaneously, and excellent performance can be achieved on any machine with a large load fluctuation. In order to achieve the power saving effect of the motor can be devised, described in detail by the accompanying drawings as follows.

3상교류전원단자(R,S,T)와 부하측인 모우터(M)측에는 입력신호단자(L1-L3)와 출력신호단자(T1-T3)를 각각 통하여 다이리스터(SCR1-SCR6)로된 전원스위칭회로부(10)(20)(30)의 입력단을 각각 연결하고, 상기 전원스위칭회로부(10)(20)(30)의 출력단에는 트라이악(TC1-TC3), 다이액(Di1-Di3), 가변저항(VR1-VR3), 다이오드(D1-D6), 콘덴서(C1-C6)및 저항(R1-R9)으로된 스위칭제어회로부(40)(50)(60)의 입력단을 각각 연결하고, 상기 스위칭제어회로부(40)(50)(60)의 출력단에는 옵토아이솔레이터(OiS1-OiS3), 광도전셀(Cds1-Cds3), 발광다이오드(LED1-LED3), CT트랜스(T1), 가변저항(VR4), (VR5), 다이오드(D7)및 콘덴서(C7)로된 변환궤환회호부(70)를 연결하여서 구성한 것이다.The three-phase AC power supply terminals (R, S, T) and the load motor side (M) side through the input signal terminals (L 1- L 3 ) and output signal terminals (T 1- T 3 ), respectively, the thyristor (SCR 1). -SCR 6 is connected to the input terminal of the power switching circuit unit 10, 20, 30, respectively, and the triac (TC 1- TC 3 ) to the output terminal of the power switching circuit unit 10, 20, 30 Switching with diac (Di 1 -Di 3 ), variable resistor (VR 1 -VR 3 ), diode (D 1 -D 6 ), capacitor (C 1 -C 6 ) and resistor (R 1 -R 9 ) Input terminals of the control circuits 40, 50, and 60 are respectively connected, and opto-isolators (OiS 1 -OiS 3 ) and photoconductive cells (Cds 1 ) are respectively connected to the output terminals of the switching control circuits (40, 50, 60). -Cds 3 ), light-emitting diode (LED 1 -LED 3 ), CT transformer (T 1 ), variable resistor (VR 4 ), (VR 5 ), conversion feedback circuit consisting of diode (D 7 ) and capacitor (C 7 ) It is configured by connecting the arc portion (70).

이와같이 구성된 본 발명의 작용효과를 설명하면 다음과 같다.Referring to the effects of the present invention configured as described above are as follows.

우선, 3상교류전원단자(R,S,T)에 전원이 투입된 상태에서 입력신호단자(L1)에 입력되면, 입력된 전원은 스위칭제어회로부(40)의 내부에 구성된 다이오드(D1)를 통하여 다이리스터(SCR2)의 게이트(G)측에 가해지게됨으로써 상기 다이리스터(SCR2)는 "턴온"하게되고, 따라서 다이리스터(SCR1)는 "턴오프"된다.First, when the power is input to the input signal terminal L 1 while the power is supplied to the three-phase AC power supply terminals R, S, and T, the input power supplies the diode D1 configured inside the switching control circuit unit 40. by thyristor (SCR 2) is applied to the gate (G) through the side of the thyristor (SCR 2) is the "turn-on", therefore is "off" thyristors (SCR 1).

또한 모우터(M)측의 부하전원이 출력신호단자(T1)에 출력되면 출력된 부하의 전원은 콘덴서(C1)에 가해지게되어 콘덴서(C1)는 충방전하게 된다.Also, when the output Motor (M) side of the load power, the output signal terminals (T 1) of the power output load is is applied to the capacitor (C 1) a capacitor (C 1) is charged and discharged.

이때 가변저항(VR1)을 조정하여 줌으로써 다이액(Di1)은 "턴온"하게되고, 따라서 트라이악(TC1)도 "턴온"된다.At this time, by adjusting the variable resistance VR 1 , the diac Di 1 is “turned on”, and thus the triac TC 1 is also “turned on”.

그럼으로써 다이리스터(SCR1)는 "턴온"되고 다이리스터 (SCR2)는 "턴오프"하게 된다.This causes the thyristor SCR 1 to be " turned on " and the thyristor SCR 2 to " turn off ".

이와같이 하여 회로가 성립하게 되는데 전원스위칭회로부(10)내의 내부에 구성된 다이라스터(SCR1)과 (SCR2)의 게이트(G)측에 신호를 보내지 않는 이상은 상기 다이리스터(SCR1) (SCR2)는 "턴온"되지 않으며 따라서 모우터(M)측의 부하전원은 차단된 상태이다.In this way, the circuit is established. As long as a signal is not sent to the gate G side of the die raster SCR 1 and SCR 2 configured inside the power supply switching circuit unit 10, the die thruster SCR 1 ( SCR 2 ) is not " turned on " and thus the load power on the motor M side is cut off.

여기서 다이리스터(SCR1)과 (SCR2)가 수행할수 있는 신호를 인가하면 상기 다이리스터(SCR1)과 (SCR2)는 "턴온"되고 부하측의 모우터(M)는 작동하게 된다.In this case, when a signal capable of being performed by the thyristors SCR 1 and SCR 2 is applied, the thyristors SCR 1 and SCR 2 are “turned on” and the motor M on the load side is operated.

그러나 다이리스터(SCR1)과 (SCR2)의 게이트(G)측에 인가되는 신호의 양에 따라서 상기 다이리스터(SCR1) (SCR2)의 제어범위가 결정되는데 이와같이 제어범위를 결정하기 위해서는 스위칭제어회로부(40)의 내부에 구성된 가변저항(VR1)에 의해 상기 다이리스터(SCR1) (SCR2)의 제어범위가 결정된다.However, the control range of the diesters SCR1 and SCR2 is determined according to the amount of the signal applied to the gate G side of the thyristors SCR 1 and SCR 2 . The control range of the thyristors SCR 1 and SCR 2 is determined by the variable resistor VR 1 configured inside the circuit unit 40.

이와같이 결정된 신호는 모우터(M)부하측의 변화에 대응하는 능력이 없으므로 변환궤환회호부(70)에서는 이를 보안하게 된다.Since the signal determined in this way does not have the ability to respond to the change of the load of the motor M, the conversion feedback circuit 70 secures it.

여기서 변환궤환회로부(70)의 내부에 구성된 VR1은 전원스위칭회로부(10)의 내부에 구성된 다이리스터(SCR1)과 (SCR2)의 조정범위를 원활히 하기 위한 가변저항이다.Here, VR 1 configured inside the conversion feedback circuit unit 70 is a variable resistor for smoothing the adjustment range of the thyristors SCR 1 and SCR 2 configured inside the power supply switching circuit unit 10.

따라서 모우터(M)의 측의 부하의 변화를 변환궤환회로부(70)의 내부에 구성된 광도전셀(Cds1)및 발광다이오드(LED1)로된 옵토아이솔레이터 (OiS1)에서 이를 감지하여 다이리스터 (SCR1) (SCR2)의 게이트 (G)측에 대한 신호량을 자동제어하게되며, 이에따라 다이리스터(SCR1) (SCR2)는 모우터(M)측의 부하전압, 전류를 자동제어하여 모우터(M)의 절전 효과를 얻게 되는 것이다.Therefore, the change of the load on the motor M side is detected by the opto-isolator (OiS 1 ) composed of the photoconductive cell (Cds 1 ) and the light emitting diode (LED 1 ) configured inside the conversion feedback circuit unit 70. thyristor (SCR 1) and automatically controlling the signal amount with respect to the gate (G) side of (SCR 2), yiettara automatically a thyristor (SCR 1) (SCR 2) is Motor (M) side of the load voltage, current By controlling the power saving effect of the motor (M) will be obtained.

여기서 전원스위칭회로부(20)(30)와 스위칭제어회로부(50)(60)는 앞서 설명한 바와같이 전원스위칭회로부(10)와 스위칭제어회로부(40)와의 동일한 동작을 수행하게 되므로써 생략한다.Here, the power supply switching circuit unit 20 and 30 and the switching control circuit unit 50 and 60 are omitted because they perform the same operations as the power supply switching circuit unit 10 and the switching control circuit unit 40 as described above.

이상에서와 같이 동작되는 본 발명은, 간단한 회로로 구성되어 있어 경제적이며 그 성능이 우수할뿐 아니라 만약 고장시에도 염가수리를 가능하게하고, 또한 기존의 3상에서는 각상을 하나하나를 별도로 조정하였으나, 본 발명에서는 각상을 동시에 조절이 가능하도록하고, 또한 다이리스터를 사용함으로써 리드 테이프 다이리스터를 사용했을시보다 가격이 저렴할뿐만 아니라 고장원인을 삭감 시켜주는 잇점이 있는 것이다.The present invention operated as described above is composed of a simple circuit, it is economical and its performance is not only excellent, but also possible to cheap repair in the event of a failure, and in the existing three phases, but each one separately adjusted, In the present invention, it is possible to adjust each phase at the same time, and furthermore, the use of the die thruster is advantageous in that the price is lower than that in the case of using the lead tape die thruster, and the cause of failure is reduced.

Claims (1)

3상교류전원단자(R,S,T)와 부하측인 모우터(M)측에는 입력신호단자(L1-L3)와 출력신호단자(T1-T3)를 각각 통하여 전원스위칭회로부 (10)(20)(30)의 입력단을 각각 연결하고, 상기 전원스위칭회로부(10)(20)(30)의 출력단에는 스위칭제어회로부 (40)(50)(60)의 입력단을 각각 연걀함과 더불어 상기 스위칭제어회로부 (40)(50)(60)의 출력단에는 변환궤환회로부(70)단을 연결하여 구성됨을 특징으로 하는 절전형 모우터의 구동회로.Power supply switching circuit section (10) through the input signal terminals (L 1- L 3 ) and the output signal terminals (T 1- T 3 ) on the three-phase AC power supply terminals (R, S, T) and the motor (M) on the load side, respectively. And input terminals of the switching control circuit units 40, 50 and 60 to the output terminals of the power switching circuit units 10, 20 and 30, respectively. The driving circuit of the power-saving motor, characterized in that the output of the switching control circuit unit (40) (50) (60) is connected to the conversion feedback circuit unit (70).
KR1019870007184A 1987-07-06 1987-07-06 Arrangement for starting electric motor KR890005105B1 (en)

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KR1019870007184A KR890005105B1 (en) 1987-07-06 1987-07-06 Arrangement for starting electric motor

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Application Number Priority Date Filing Date Title
KR1019870007184A KR890005105B1 (en) 1987-07-06 1987-07-06 Arrangement for starting electric motor

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KR890003105A KR890003105A (en) 1989-04-12
KR890005105B1 true KR890005105B1 (en) 1989-12-11

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