KR890002161Y1 - Electric machines of starting apparatus - Google Patents

Electric machines of starting apparatus Download PDF

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Publication number
KR890002161Y1
KR890002161Y1 KR2019860006615U KR860006615U KR890002161Y1 KR 890002161 Y1 KR890002161 Y1 KR 890002161Y1 KR 2019860006615 U KR2019860006615 U KR 2019860006615U KR 860006615 U KR860006615 U KR 860006615U KR 890002161 Y1 KR890002161 Y1 KR 890002161Y1
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KR
South Korea
Prior art keywords
motor
triac
resistor
resistance
thermistor
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KR2019860006615U
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Korean (ko)
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KR870019146U (en
Inventor
김관진
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김관진
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Priority to KR2019860006615U priority Critical patent/KR890002161Y1/en
Publication of KR870019146U publication Critical patent/KR870019146U/en
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Publication of KR890002161Y1 publication Critical patent/KR890002161Y1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/06—Details with automatic reconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/083—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for three-phase systems
    • 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
    • H02P1/02—Details of starting control
    • H02P1/029—Restarting, e.g. after power failure

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor And Converter Starters (AREA)

Abstract

내용 없음.No content.

Description

전동기의 기동장치Starting device of electric motor

제1도는 본 고안 요지 설명도.1 is an explanatory diagram of the present invention.

제2도는 본 고안 장치의 회로도이다.2 is a circuit diagram of the device of the present invention.

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

C, C1, C2: 콘덴서 Th : 서어미스터C, C 1 , C 2 : Condenser Th: Thermistor

T1: 트라이악 T2: 다이악T 1 : Triac T 2 : Diac

R1,R2,R3: 저항 M : 전동기의 주권선R 1 , R 2 , R 3 : Resistance M: Main winding of motor

S : 전동기의 기동권선 S1,S2: 연결단자S: Starting winding of motor S 1 , S 2 : Connection terminal

Cu : 동판 Ag : 용접Cu: Copper Plate Ag: Welding

본 고안은 전동기의 기동장치에 관한 것으로, 특히 과전류를 보호하며 자동 리세트가 가능케한 전동기의 기동장치에 관한 것이다.The present invention relates to a starter of the motor, and more particularly to a starter of the motor that protects overcurrent and enables automatic reset.

종래 전동기의 기동장치에 있어서 과전류를 방지하기 위하여 CT센서를 이용하는 것은 수많이 알려져 있다. (예 : 공개85-6916)Background Art It is known to use a CT sensor in order to prevent overcurrent in the starting device of a conventional motor. (E.g., disclosure 85-6916)

그러나 전동기의 기동권선에 흐르는 전류의 세기에 따라 서어머스타트에 의해 전류를 제어하여 과전류를 보호하면서도 자동으로 리세트시켜 주는 장치는 아직 알려져 있지를 않다.However, there is no known device that automatically resets the current by controlling the current by the thermal start according to the strength of the current flowing in the starting winding of the motor, while protecting the overcurrent.

본 고안은 NTC 서어미스터와 직렬연결되는 저항의 발열에 의한 저항치의 변화로 다이악을 ON 또는 OFF시킴으로서 트라이악을 턴온 또는 턴오프되도록 한 것으로 이하 본 고안을 첨부된 도면에 따라 상술한다.The present invention is to turn on or off the triac by turning on or off the diaak by a change in the resistance value of the resistance connected in series with the NTC thermistor, the present invention will be described in detail with reference to the accompanying drawings.

제1도는 본 고안 요지설명도로 NTC 서어미스터(Th)의 양단에는 은(silver)에 의해 각기 동판이나 동합금과 같은 양도체판(良導體板) (이하동판)(Cu)이 용접되어 있으며, 상기와 같은 동판(Cu)의 외측에는 각기 저항(R1)과 저항(R2)이 부착하여서 되는 것이다.FIG. 1 is a schematic diagram of the present invention. Both ends of an NTC thermistor (Th) are welded with a copper plate or a copper plate (hereinafter, copper plate) such as copper alloy, respectively, by silver. Resistor R 1 and resistor R 2 are attached to the outside of the same copper plate Cu, respectively.

도면중 a, a'는 저항(R2)의 단자, b, b'는 서어미스터(Th)의 단자, r, r'는 저항(R1)의 단자를 의미하며, 이와같은 본 고안 요지는 제2도와 같은 전기적 결선으로 구성할수가 있다.In the drawings, a and a 'denote terminals of the resistor R 2 , b and b' denote terminals of the thermistor Th, and r and r 'denote terminals of the resistor R 1 . It can be configured as an electrical connection as shown in FIG.

즉, 콘덴서(C1)와 병렬연결된 NTC형 서어미스터(Th)는 저항(R1)과 직렬연결되어 단자(r)가 연결단자(S1)에 결선되며, 또 상기한 연결단자(S1)와 연결단자(S2) 사이에는 트라이악(T1)이 저항(R2)과 직렬연결된다.That is, the NTC type thermistor (Th) connected in parallel with the capacitor (C 1 ) is connected in series with the resistor (R 1 ) so that the terminal (r) is connected to the connection terminal (S 1 ), and the above connection terminal (S 1) ) And the connection terminal (S 2 ) is a triac (T 1 ) is connected in series with the resistor (R 2 ).

상기한 저항(R2)은 후술하는 전동기의 보조 기동권선(S)의 전류제한용으로 150℃이상에서 견딜 수 있는 것이며, 또 이와 같은 발열은 후술하는 바와 같이 트라이악(T1)이 턴-온 되었을때 발열된다.The above-mentioned resistance (R 2 ) is able to withstand above 150 ℃ for the current limit of the auxiliary starting winding (S) of the motor to be described later, and the heat generated by the triac (T 1 ) as described below. Heats up when it is on.

또 제2도에서 트라이악(T1)과 병렬연결된 저항(R3)은 트라이락(T1) 보호용으로 자기방전용이며, 서어머스타트(Th)와 저항(R1)의 중간점(b')과 트라이악(T1)의 게이트 사이에는 다이악(T2)이 연결되어 있다. 상기와 같은 구성으로 할수 있는 것이므로 연결단자(S1, S2)에 전동기의 주권선(M)과 보조 기동권선(S)사이에 도시한 바와 같이 연결하여 전원(AC)을 전동기(M)에 인가하는 경우 저항(R1)과 서어미스터(Th)와의 분지전압으로 다이악(T2)이 도통전압에 이르면, 트라이악(T1)의 게이트를 트리거시켜 줌으로 트라이악(T1)은 턴-온되어 보조기동권선(S)에 전류가 가해져 전동기는 기동하기 시작된다. 그러나 보조기동권선(S)에 전류가 흐르기 시작하면 저항(R2)은 발열하기 시작하여 제1도에 도시한 바와 같이 발생되는 열은 열전도체인 동판(Cu)을 가열하게 되고, 상기한 동판(Cu)이면에 은(Ag)으로 용접된 NTC형 서어미스터(Th)를 가열하게 되고 이와 동시 다른쪽에 은용접된 동판(Cu)에도 전도 가열되어 외측에 부착된 저항(R1)도 가열된다. 이와 같이 가열되어 온도가 상승되면 예들들어 100-130℃가 될때 NTC형 서어미스터(Th)의 저항변화(저항치가 감소)됨으로서 다이악(T2)에 흐르는 전압은 도통전압이하로 내려가고, 이에따라 트라이악(T1)의 게이트를 트리거하지 못하므로 트라이악(T1)은 턴-오프될 수 있도록 설정함은 물론이다. 따라서 서어미스터(Th)가 정해진 일정온도로 가열되면 트라이악(T1)은 턴-오프됨과 동시 이번에는 저항(R1)과 서어미스터(Th)의 직렬저항에는 콘덴서(C1)의 충방전에 의해 전원전압보다 약간 높은 전압이 가해져서 저항(R1)과 서어미스터(Th)가 동시에 가열된다. 이와 같은 현상은 전원이 차단되는 경우를 제외하고는 계속 통전되어 온도가 100℃이상으로 유지되고 이에따라 보조기동권선(S)에 흐르는 과전류를 방지함으로써 전동기의 소손을 방지할 수 있게 되는 것이며, 또 다시 통전되는 경우 전술한 바의 과정이 되풀이 되며, 또한 보조기동권선(S) 자체에 기전되는 전류를 억제할 수 있게 되는 실용적인 고안인 것이다.In the triac (T 1) and a parallel connected resistor in a second degree (R 3) is trimethyl lock (T 1) is a self-discharge for protection, standing mother midpoint of the start (Th) and a resistor (R 1) (b ') And the gate of the triac (T 1 ) is connected to the diaak (T 2 ). Since it can be configured as described above, connecting the power supply (AC) to the motor (M) by connecting between the main winding (M) and the auxiliary starting winding (S) of the motor to the connecting terminals (S 1 , S 2 ) When the diaak T 2 reaches the conduction voltage due to the branch voltage between the resistor R 1 and the thermistor Th, the triac T 1 is triggered by triggering the gate of the triac T 1 . The motor is started by turning on and applying current to the auxiliary starting winding S. However, when current starts to flow in the auxiliary starting winding S, the resistor R 2 starts to generate heat, and as shown in FIG. 1, the heat generated heats the copper plate Cu, which is a thermal conductor, and the copper plate ( At the bottom of Cu), the NTC type thermistor Th welded with silver (Ag) is heated, and at the same time, conduction heating is performed on the copper plate Cu welded to the other side, and the resistance R 1 attached to the outside is also heated. In this way, when the temperature rises, for example, when the temperature rises to 100-130 ° C, the resistance change (resistance decreases) of the NTC type thermistor (Th) decreases, so that the voltage flowing in the diaak (T 2 ) falls below the conduction voltage. Since the triac T 1 does not trigger the gate, the triac T 1 is set to be turned off, of course. Therefore, when the thermistor (Th) is heated to a predetermined temperature, the triac (T 1 ) is turned off and at the same time the charge and discharge of the capacitor (C 1 ) in the series resistance of the resistor (R 1 ) and the thermistor (Th). By applying a voltage slightly higher than the power supply voltage, the resistor R 1 and the thermistor Th are simultaneously heated. This phenomenon is to continue to energize, except when the power is cut off, the temperature is maintained at 100 ℃ or more, thereby preventing overcurrent flowing in the auxiliary starting winding (S) to prevent damage to the motor, and again When energized, the above-described process is repeated, and it is a practical design that can suppress a current applied to the auxiliary starting winding S itself.

Claims (2)

전동기의 주권선(M)과 보조기동권서(S)사이에 트라이악(T1)을 연결하여 전동기의 기동을 제어하도록 되는 것에 있어서, 연결단자(S1) (S2)사이에 저항(R1)으로 콘덴서(C1)가 병렬연결된 NTC형 서어미스터(Th)와 직렬연결되고, 상기한 저항(R1)과 서어머스타트(Th)의 연결점(r')과 트라이악(T1)의 게이트 사이에 다이악(T2)으로 연결되고, 상기한 트라이악(T1)의 캐소드가 저항(R2)으로 연결단자(S2)에 연결시켜서 되는 것을 특징으로 하는 전동기의 기동장치.In order to control the starting of the motor by connecting a triac (T 1 ) between the main winding (M) and the auxiliary starting certificate (S) of the motor, the resistance (R) between the connection terminal (S 1 ) (S 2 ) 1 ) the capacitor (C 1 ) is connected in series with the NTC type thermistor (Th) connected in parallel, and the connection point (r ') and triac (T 1 ) of the resistor (R 1 ) and thermostat (Th). A diac (T 2 ) is connected between the gates of the motor, characterized in that the cathode of the triac (T 1 ) is connected to the connection terminal (S 2 ) by the resistor (R 2 ). 청구범위 제1항 기재의 NTC형 서어미스터(Th)는 양측에 동판과 같은 양도체판(Cu)이 은(Ag)접점되고, 상기한 양도체판(Cu)의 외측에 저항(R1)과 저항(R2)을 각기 부착시켜서 되는 것을 특징으로 하는 전동기의 기동장치.NTC type thermistor (Th) according to claim 1 has a contact plate (Cu), such as a copper plate on both sides of the silver (Ag) contact, the resistance (R 1 ) and the resistance on the outside of the above-described conductor plate (Cu) A starting device for an electric motor, characterized by attaching (R 2 ) to each other.
KR2019860006615U 1986-05-13 1986-05-13 Electric machines of starting apparatus KR890002161Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019860006615U KR890002161Y1 (en) 1986-05-13 1986-05-13 Electric machines of starting apparatus

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Application Number Priority Date Filing Date Title
KR2019860006615U KR890002161Y1 (en) 1986-05-13 1986-05-13 Electric machines of starting apparatus

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KR870019146U KR870019146U (en) 1987-12-28
KR890002161Y1 true KR890002161Y1 (en) 1989-04-12

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KR2019860006615U KR890002161Y1 (en) 1986-05-13 1986-05-13 Electric machines of starting apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100371342B1 (en) * 2000-07-01 2003-02-06 주식회사 엘지이아이 Apparatus and the method for start-current controlling of compressor
KR100371338B1 (en) * 2000-07-01 2003-02-06 주식회사 엘지이아이 Apparatus and the method for start-current controlling of compressor

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