KR820000309Y1 - Starting relay for single phase induction motor - Google Patents

Starting relay for single phase induction motor Download PDF

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Publication number
KR820000309Y1
KR820000309Y1 KR2019810001623U KR810001623U KR820000309Y1 KR 820000309 Y1 KR820000309 Y1 KR 820000309Y1 KR 2019810001623 U KR2019810001623 U KR 2019810001623U KR 810001623 U KR810001623 U KR 810001623U KR 820000309 Y1 KR820000309 Y1 KR 820000309Y1
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current
winding
main winding
relay
motor
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KR2019810001623U
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Korean (ko)
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김정수
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삼성전자공업주식회사
강진구
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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
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
    • 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
    • H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
    • H02P2207/01—Asynchronous machines

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Motor And Converter Starters (AREA)

Abstract

내용 없음.No content.

Description

2중권선 전류형 기동 릴레이Double winding current start relay

제1도는 저항기동분상 유도전동기에 사용된 종래의 전류형 기동 릴레이 회로도.1 is a diagram of a conventional current starting relay circuit used in a resistor in-phase induction motor.

제2도는 종래의 저항기동분상 유도전동기의 주권선 전류특성 그래프(Graph)2 is a graph of main winding current characteristics of a conventional resistor inphase motor.

제3도는 종래의 트랜스를 사용한 저항기동분 상유 도전동기의 주권선 전류특성 그래프.3 is a graph of main winding current characteristics of a conductive copper in a resistor copper using a conventional transformer.

제4도는 저항기동분상 유도전동기에 사용된 본 고안의 2중전선 전류형기동 릴레이 회로도.4 is a circuit diagram of a double wire current type start relay of the present invention used in a resistor in-phase induction motor.

제5도는 본 고안의 트랜스를 사용한 저항기동분상 유도 전동기의 주권선 전류특성 그래프.5 is a main winding current characteristic graph of a resistor in-phase induction motor using a transformer of the present invention.

제6도는 콘덴서 기동분상 유도 전동기에 사용된 본 고안의 2중권선 전류형 기동릴레이 회로도.6 is a double winding current start relay circuit diagram of the present invention used in a condenser starting phase induction motor.

본 고안은 유도전동기에 사용되는 전류형 기동릴레이의 동작 특성을 제어하는 권선회로의 개량에 관한것이다.The present invention is directed to an improvement of the winding circuit that controls the operating characteristics of the current starting relay used in induction motors.

일반적으로 종래의 전류형 기동 릴레이는 제1도와 같이 개페 접점(B1, B2), 가동 프란자(PL), 릴레이코일(LM), 기동과 운전시 사용되는 주권선(M)과 기동시만 사용되는 보조권선(A)으로 구성되어 있으며, 전용전원에서 종래의 전류형기동 릴레이의 동작특성을 제2도와 같은 전류-속도 특성 그래프로서 나타낼수 있는데, 본 고안을 이해하기 위하여 이들 관계를 설명하여보면 모우터에 교류전원이 인가되면 주권선(M)에 전류가 흐르게되고, 모우터 회전속도(RPM)가 0(Zero)일때에 주권선 전류(IMO)가, 가동 프란자(PL)를 들어올려 개폐접점(B1,B2)에 연결시켜주게 되는 픽업전류(IRP)보다 크므로 가동프란자(PL)는 픽업되어 보조권선(A)에 전류가 흐르게되며, 주권선(M)에는 주권선 및 보조권선 통전시의 주권선 전류(IMC)가 흐르게 되고, 속도가 점점 증가하면 모우터의 특성에 따라 주권선 및 보조권선 통전시의 주권선전류(IMC)가 감소되어 릴레이코일(LM)에 가동프탄자(PL)가 개폐접점(B1, B2)을 개방시켜주는 드롭아웃(DROP OUT)전류 (IRD)이하의 전류가 흐르게 되어 동프란자가(PL)는 드롭 아웃되며, 보조권선(A)에는 전류가 흐르지 않게 되어 주권선 전류(IMO)의 전류 변화추이를 가지며, 드릅 아웃된 점의 주권선 전류(ISM)가 픽업전류(IRP)보다 작으므로 전류형 기동릴레이는 재픽업없이 상기와 같은 동작특성을 가진다.In general, the current-type starting relay is the opening contact (B 1 , B 2 ), the movable franchise (PL), the relay coil (LM), and the main winding (M) used for starting and operation as shown in FIG. It consists of auxiliary windings (A) which are used only, and the operating characteristics of the conventional current-type starting relay in a dedicated power source can be represented as a current-speed characteristic graph as shown in FIG. 2. To explain the present invention, these relationships are explained. In this case, when AC power is applied to the motor, current flows through the main winding (M), and when the motor rotation speed (RPM) is zero, the main winding current (IMO) turns on the movable franchise (PL). Since it is larger than the pickup current IRP to be lifted up and connected to the opening and closing contacts B 1 and B 2 , the movable franchise PL is picked up so that a current flows in the auxiliary winding A, and the main winding M The main winding current (IMC) flows when the main winding and the auxiliary winding are energized. Depending on the characteristics, the main winding current (IMC) is reduced when the main winding and the auxiliary winding are energized, and the dropout (DROP) in which the movable propane (PL) opens the opening and closing contacts (B 1 , B 2 ) to the relay coil (LM). OUT) Current (IRD) or less flows, and the copper franchise (PL) drops out, and the current does not flow in the auxiliary winding (A), which has a current change trend of the main winding current (IMO). Since the main winding current ISM of the point is smaller than the pick-up current IRP, the current start relay has the same operation characteristics as above without re-pickup.

그러나 100V, 220V겸용과 같은 트랜스를 사용하는 2중전원용 모우터 회로에서는, 종래의 전류형 기동릴레이를 사용할 경우 제3도와 같은 동작특성을 가지게 되는데, 즉, 저항 기동 분상유도 전동기에 있어서 주권선(M)과 보조권선(A)에 모두 전원이 인가될 때의 전류가 주권선(M)에만 전원이 인가될 때의 주권선 전류(IMO)보다 훨씬 큰 일반적인 특징을 가지고 있으므로, 트랜스 1차측에 동일한 교류전원이 인가될 경우에는 트랜스 2차측에 흐르는 전류로 인한 2차측 전압 강하는 모우터의 주권선(M) 및 보조권선(A)에 모두 전류가 흐를때의 전압강하가 주권선(M)에만 전류가 흐를때에 전압강하보다 훨씬 크게 되므로, 동일한 전원전압 인가 상태에서는 주권선 및 보조권선 통전시의 주권선 전류(IMC)가 주권선에만 통전시의 주권선 전류(M)보다 작은 전류치를 갖게되는 전류변화 추이를 보이게 된다.However, in the double-circuit power motor circuit using a transformer such as a 100V, 220V combined use, it has the same operating characteristics as in FIG. 3 when the conventional current start relay is used, that is, the main winding ( Since the current when the power is applied to both M) and the auxiliary winding A has a general characteristic much larger than that of the main winding current IMO when the power is applied only to the main winding M, When AC power is applied, the secondary voltage drop due to the current flowing in the transformer secondary side causes the voltage drop only when the current flows in both the main winding (M) and the auxiliary winding (A) of the motor. Since the current is much larger than the voltage drop when the current flows, the main winding current (IMC) at the same time when the main power supply and the auxiliary winding are energized has a smaller current value than the main winding current (M) at the main winding only. Be Shows the current change trend.

이때 모우터에 교류전원이 트랜스를 통해 인가되면 주권선(M)에 전류가 흐르게되고, 모우터 회전속도가 0일때 주권선전류(IMO)가 픽업전류(IRP)보다 커서 가동프란자(PL)는 픽업되어 보조권선(A)에 전류가 흐르게되며, 주권선(M)에는, 주권선 및 보조권선 통전시의 주권선 전류(IMC)의 전류변화추이를 갖게 된다.At this time, when AC power is applied to the motor through the transformer, the current flows through the main winding (M). When the motor rotation speed is 0, the main winding current (IMO) is larger than the pickup current (IRP), so the movable franchise (PL) Is picked up so that a current flows in the auxiliary winding A, and the main winding M has a current change trend of the main winding current IMC during energization of the main winding and the auxiliary winding.

한편, 속도가 증가함에 따라 주권선 및 보조권선 통전시의 주권선전류(IMC)는 점점 감소하여 릴레이코일(LM)에 드롭 아웃전류(IRD)가 흐르게되면 가동프란자(PL)는 드롭 아웃되어 보조권선(A)에 전류가 흐르지 않게되어 주권선전류(IMO)만의 전류변화 추이를 갖게된다.On the other hand, as the speed increases, the main winding current IMC decreases when the main winding and the auxiliary winding are energized, and when the drop out current IRD flows through the relay coil LM, the movable franchise PL is dropped out. Since the current does not flow in the auxiliary winding A, only the main winding current IMO has a current change trend.

이때에, 드롭 아웃된 점의 주권선전류(ISM)가 픽업전류(IRP)보다 크므로 가동프란자(PL)는 재픽업되고, 픽업된 주권선 및 보조권선 통전시의 주권선전류(IMC)가 드롭 아웃전류(IRD)보다 작아서 가동프란자(PL)는 드롭 아웃되어 최초의 드롭 아웃되는 모우터 속도점(P1)에서 주권선 전류(IMO)가 픽업전류(IRP)보다 작게되는 모우터 속도점(P2)까지 가동프란자(PL)가 수차에 걸쳐 ON-OFF를 반복하는 채터링 현상이 발생하게 된다.At this time, since the main winding current ISM of the dropped-out point is larger than the pickup current IRP, the movable franchiser PL is repicked, and the main winding current IMC at the time of energizing the picked-up main winding and the auxiliary winding. Is smaller than the drop out current (IRD) so that the movable franchise PL is dropped out and the main winding current IMO becomes smaller than the pickup current IRP at the motor speed point P 1 that is initially dropped out. A chattering phenomenon occurs in which the movable franchiser PL repeats ON-OFF over several aberrations up to the speed point P 2 .

이러한 채터링 현상은 릴레이 접점(B1,B2)의 마모를 심하게 하여 릴레이 수명을 현격히 단축시키고 모우터의 기동력약화, 기동 시간의 지연등을 초래하며, 기동시간이 지연됨에 따라 보조권선(A)이 파열되어 모우터 수명까지 단축 시키게되고, 또한 가전기기에 사용될 경우 릴레이 접점이 여러번 ON-OFF를 반복하므로 기동시 소음문제까지 초래하는 등의 문제점이 발생되었다.This chattering causes severe wear of the relay contacts (B 1 , B 2 ), which significantly shortens the life of the relay, reduces the starting force of the motor, and delays the starting time.As the starting time is delayed, the auxiliary winding (A ), The motor is shortened to shorten the life of the motor. Also, when used in home appliances, the relay contact repeats ON-OFF several times, causing problems such as noise during startup.

본 고안은 이러한 문제점을 해소하고자 안출한 것으로 이를 도면과 함게 상세히 설명하면 다음과 같다.The present invention has been devised to solve such a problem, which will be described in detail with reference to the accompanying drawings as follows.

즉 제4도와 같이 종래의 전류형 기동릴레이 코일을 2중권선 하여, LM은 모우터 주권선(M)에 연결하여 주권선 전류가 흐르게게하고, LA는 보조권선(A)에 연결하여 보조권선 전류가 흐르게 한것이며, 제6도는 본 고안은 콘덴서 기동분상 유도 전동기에 실시한 일예이다That is, as shown in FIG. 4, the dual winding of the current-type starting relay coil is performed. The LM is connected to the motor main winding M to allow main winding current to flow, and the LA is connected to the auxiliary winding A to connect the auxiliary winding. The current flows, and FIG. 6 is an example of the present invention implemented in a condenser starting phase induction motor.

따라서 이의 동작 특성을 살펴보면, 제5도와 같이, 교류 전원이 인가되면 모우터 주권선(M)에 전류가 흐르게되고, 모우터 회전속도(RPM)가 0일때 주권선 전류(IMO)가 픽업전류(IRP)보다 크므로 가동프란자는 픽업되어 보조권선(PL)에 전류가 흐르게 되면, 릴레이코일(LM)에서는 통전시의 주권선 전류(IMC)가 흘러 자속을 발생시키고, 릴레이코일(LA)에는 보조권선 전류가 흘러 자속을 발생시키게 된다.Therefore, when looking at its operating characteristics, as shown in FIG. 5, when AC power is applied, a current flows in the motor main winding M, and when the motor rotation speed RPM is 0, the main winding current IMO becomes a pickup current ( Since it is larger than IRP, the movable franchise is picked up and current flows in the auxiliary winding PL, the relay coil LM flows the main winding current IMC during energization to generate magnetic flux, and the relay coil LA is auxiliary. Winding current flows to generate magnetic flux.

즉, 상기와 같은 종래의 전류형 기동릴레이와 달리 보조권선(A)전류에 의한 자속이 릴레이코일(LA)내부에 추가발생되므로써 가동프란자(PL)를 쇄교하는 자속은 임의의 모우터 회전속도(RPM)에서 종래의 전류형 기동릴레이 보다 많게된다.That is, unlike the conventional current start relay as described above, the magnetic flux generated by the auxiliary winding (A) current is additionally generated inside the relay coil LA, so that the magnetic flux that bridges the movable franchise PL is rotated by an arbitrary motor. At speed (RPM) it becomes more than conventional current start relay.

한편, 릴레이의 가동 프란자(PL)중량은 일정하므로 가동프란자(PL)가 드롭아웃되는 점의 자속수는 일정하게 된다. 따라서 릴레이코일(LA)의 권선수를 적당히 조정하므로, 종래의 전류형 기동 릴레이가 가지고 있는 드롭 아웃전류(IRD)보다 더작은 주권선 드롭아웃전류(ITD)가 릴레이코일(LM)에 흐를때 가동프란자(PL)가 드롭 아웃되게 되면 제5도에서와 같이 드롭 아웃된 점의 주권선 전류(ISM)보다 픽업전류(IRP)가 더 크므로 가동프란자(PL)가 재픽업되지 않고 기동이 완료된다.On the other hand, since the weight of the movable planar PL of the relay is constant, the number of magnetic fluxes at the point at which the movable planar PL is dropped out is constant. Therefore, the number of turns of the relay coil LA is properly adjusted, so that the main winding dropout current ITD, which is smaller than the dropout current IRD of the conventional current start relay, flows in the relay coil LM. When the franchise PL is dropped out, the pick-up current IRP is larger than the main winding current ISM at the dropped-out point as shown in FIG. 5, so that the movable franchise PL is not picked up again. Is done.

이렇게 해서 채터링 현상이 제거되는 것이다.This eliminates chattering.

그 원리를 등식으로 표현하면If you express the principle as an equation

IRD × LM 권선수=(ITD × LM 권선수) +(보조권선전류 × LA 권선수)이 다.IRD × LM turns = (ITD × LM turns) + (secondary winding current × LA turns).

그러므로 모우터의 보조권선(A) 전류특성에 따라 LA권선수를 적적히 선택하면 릴레이에 채터링이 발생하지 않는 주권선 드롭 아웃 전류(ITD)를 얻을 수 있다.Therefore, if the LA winding is properly selected according to the current characteristics of the auxiliary winding (A) of the motor, the main winding dropout current (ITD) without chattering in the relay can be obtained.

이와같은 본 고안은 종래의 트랜스를 사용한 2중 전원용 저항기동 분상유도 전동기 회로에서 발생하는 채터링 현상으로 인하여, 릴레이 접점 및 모우터 수명의 단축, 기동시간의 지연, 기동시 소음문제, 기동력의 약화등의 요인을 완전히 제거한 매우 실용적인 것이다.This invention is due to the chattering phenomenon that occurs in the resistor copper phase induction motor circuit for a double power supply using a conventional transformer, which shortens the relay contact and motor life, delays the starting time, noises during starting, and weakens the starting force. It is very practical to completely eliminate such factors.

Claims (1)

도시하고 상술한 바와같이 통상의 개폐접점(B1,B2), 가동 프란자(PL), 릴레이코일(LM), 주권선(M), 보조권선(A)으로 구성된 저항기동 분상 유도 전동기의 전류형 기동 릴레이에 있어서, 기동릴레이 코일을 2중권선(LM, LA)으로 하여 릴레이코일(LM)은 모우터 주권선(M)에 연결하고, 릴레이 코일(LA)은 보조권선(A)에 연결하여 회로 구성한 2중권선 전류형 기동릴레이.As shown and described above, a resistor copper phase induction motor composed of a normal opening / closing contact point B 1 , B 2 , a movable franchise PL, a relay coil LM, a main winding M, and an auxiliary winding A is shown. In the current type start relay, the relay coil LM is connected to the motor main winding M, and the relay coil LA is connected to the auxiliary winding A using the start relay coils as the double windings LM and LA. Double winding current type start relay configured by connecting circuit.
KR2019810001623U 1981-03-09 1981-03-09 Starting relay for single phase induction motor KR820000309Y1 (en)

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KR2019810001623U KR820000309Y1 (en) 1981-03-09 1981-03-09 Starting relay for single phase induction motor

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Application Number Priority Date Filing Date Title
KR2019810001623U KR820000309Y1 (en) 1981-03-09 1981-03-09 Starting relay for single phase induction motor

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KR820000309Y1 true KR820000309Y1 (en) 1982-03-18

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KR2019810001623U KR820000309Y1 (en) 1981-03-09 1981-03-09 Starting relay for single phase induction motor

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