KR870001210Y1 - Arrangement for controlling the speed of motor - Google Patents

Arrangement for controlling the speed of motor Download PDF

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Publication number
KR870001210Y1
KR870001210Y1 KR2019840012756U KR840012756U KR870001210Y1 KR 870001210 Y1 KR870001210 Y1 KR 870001210Y1 KR 2019840012756 U KR2019840012756 U KR 2019840012756U KR 840012756 U KR840012756 U KR 840012756U KR 870001210 Y1 KR870001210 Y1 KR 870001210Y1
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KR
South Korea
Prior art keywords
motor
power supply
thyristors
thyristor
capacitor
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Application number
KR2019840012756U
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Korean (ko)
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KR860008919U (en
Inventor
이진열
Original Assignee
주식회사금성사
허신구
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Priority to KR2019840012756U priority Critical patent/KR870001210Y1/en
Publication of KR860008919U publication Critical patent/KR860008919U/en
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Publication of KR870001210Y1 publication Critical patent/KR870001210Y1/en

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Classifications

    • 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
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/50—Reduction of harmonics
    • 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

Abstract

내용 없음.No content.

Description

유도 전동기의 속도 제어회로Speed control circuit of induction motor

제1도는 종래의 회로도.1 is a conventional circuit diagram.

제2도는 본 고안의 회로도.2 is a circuit diagram of the present invention.

제3도는 본 고안에서 각부의 동작상태를 설명하기 위한 등가 회로도Figure 3 is an equivalent circuit diagram for explaining the operating state of each part in the present invention

제4(a)도-제4(g)도는 본 고안의 각 부에 나타나는 파형도.4 (a) to 4 (g) are waveform diagrams appearing in various parts of the present invention.

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

Q1-Q4: 다이리스터(SCR) L1,L2: 가변코일Q 1 -Q 4 : Thyristor (SCR) L 1 , L 2 : Variable coil

C1,C2: 콘덴서 M : 구동모우터C 1 , C 2 : Condenser M: Drive Motor

본 고안은 전압 제어에 의한 유도 전동기의 속도를 제어 하는 회로에 있어, 전압 제어로 발생되는 고조파 성분을 최대한 감소시키기 위한 전동기의 속도 제어 회로에 관한 것이다.The present invention is a circuit for controlling the speed of an induction motor by voltage control, and relates to a speed control circuit of the motor for reducing as much as possible harmonic components generated by voltage control.

종래의 다이리스터(SCR)를 이용한 전압제어 회로로서는 제1도에 도시한 바와같이, 구성되어져 전원전압(V)에 포함된 고조파 성분이 모우터(M)에 그대로 전달되므로서, 전동기 고정자 코일의 온도를 상승시키고, 효율이 감소되며, 소음과 진동의 원인이 되는 등의 문제점이 있었다.As a voltage control circuit using a conventional thyristors (SCR) as shown in Figure 1, the harmonic components contained in the power supply voltage (V) is transmitted to the motor (M) as it is, so that the motor stator coil There was a problem such as raising the temperature, decreasing the efficiency, causing noise and vibration.

본 고안은 이와같은 점을 감안하여, 전원전압 단자측과 부하(모우터)측을 콘덴서로 차단시켜, 전원전압에 포함된 고조파 성분이 부하에 전달되는 것을 억제하여 모우터의 제어 효율을 높일 수 있도록 안출한 것으로, 이하 첨부도면에 의하여 상세히 설명하면 다음과 같다.In view of the above, the present invention cuts off the power supply terminal side and the load (motor) side with a capacitor, suppresses the transmission of harmonics contained in the power supply voltage to the load, thereby improving the control efficiency of the motor. As described in detail below with reference to the accompanying drawings as follows.

전원(V)에 연결된 가변코일(L1)에는 다이리스터(Q1,Q3)의 애노드 및 캐소드를 각각 접속하고, 다이리스터(Q1)의 캐소드는 콘덴서(C1) 및 다이리스터(Q2)의 애노드에 접속하고, 다이리스터(Q3)의 애노드는 캐패시터(C2) 및 다이리스터(Q4)의 캐소드에 접속하고, 다이리스터(Q2,Q4)의 캐소드 및 애노드는 가변코일(L2)에 연결된 모우터(M)에 접속하여 구성시킨다.The anode and cathode of the thyristors Q 1 and Q 3 are connected to the variable coil L 1 connected to the power supply V, respectively, and the cathode of the thyristor Q 1 is the capacitor C 1 and the thyristor Q. 2) of the cathode and the anode of the connection to the anode, and the thyristors (Q 3), the anode is a capacitor (C 2) and a die connected to the cathode of the thyristor (Q 4), and the thyristors (Q 2, Q 4) of a variable thereby configured to connect to the Motor (M) connected to the coil (L 2).

이와 같이 구성된 본 고안의 작용효과를 설명하면 다음과 같다.Referring to the effect of the present invention configured as described above are as follows.

전원전압(V)의 정(+)의 반주기 동안에는 다이리스터(Q1,Q4)는 각각 Wt=α, Wt=α'에서 턴온 상태가 되므로, 다이리스터(Q1)에는 제3(a)도에 도시한 바와 같은 전류 통로가 형성되어져, 콘덴서(C1)에는 제4(b)도에서와 같이 Wt=α에서 Wt=β 동안 충전전류(i1)가 흐르게 되고, 동시에, 다이리스터(Q4)에는 제3(b)도에서와 같은 전류 통로가 형성되어져, 이미 부(-)의 반주기동안 충전되어진 콘덴서(C2)에는 제4(e)도에서와 같이 방전류(ic2)가 흐르게 된다.During the positive half period of the power supply voltage V, the thyristors Q 1 and Q 4 are turned on at Wt = α and Wt = α ', respectively, so that the third thruster Q 1 has a third (a). As shown in the figure, a current path is formed, and as shown in FIG. 4 (b), the charging current i 1 flows in the capacitor C 1 during Wt = α to Wt = β, and at the same time, the thyristor ( Q 4 ) has a current path as shown in FIG. 3 (b), and the discharge current ic 2 as shown in FIG. 4 (e) in the capacitor C 2 which has already been charged for a negative half cycle. Will flow.

한편, 전원전압(V)이 부(-)의 반주기로 바뀌게 되면, 다이리스터(Q1,Q4)는 오프되고, 반면 다이리스터(Q2,Q3)는 각각 Wt=π+α, Wt=π+α'에서 턴온상태가 되므로, 다이리스터(Q3)에는 제3(c)도에서와 같은 전류 통로가 형성되어져, 콘덴서(C2)에는 제4(c)도에서와 같이 Wt=π+α에서 Wt=π+β 동안은 충전전류(i2)가 흐르게 되고, 동시에, 다이리스터(Q2)에는 제3(d)도에서와 같은 전류 통로가 형성되어져 이미 정(+)의 반주기 동안 충전되어진 콘덴서(C1)에는, 제4(f)에서와 같이 방전전류(ic2)가 흐르게 된다.On the other hand, when the power supply voltage V is changed to a negative half period, the die Listers Q 1 and Q 4 are turned off, while the Lististors Q 2 and Q 3 are Wt = π + α and Wt, respectively. Since it is turned on at π + α ', the current path is formed in the thyristor Q 3 as shown in FIG. 3 (c), and in the capacitor C 2 as shown in FIG. 4 (c), Wt = During Wt = π + β at π + α, the charging current i 2 flows, and at the same time, the current path is formed in the thyristor Q 2 as shown in FIG. In the capacitor C 1 charged during the half cycle, the discharge current ic 2 flows as in the fourth (f).

이와 같이 전원전압(V)의 1주기(Cycle) 동안에, 전원전류(is)=충전전류(i1-i2)가 되어 제4(d)도에서와 같은 파형이 형성되고, 부하전류(iM)=방전전류(ic1-ic2)가 되어 제4(g)도에서와 같은 파형이 형성되는 것이다.Thus, during one cycle (Cycle) of the power supply voltage (V), the power supply current (is) = charge current (i 1- i 2 ) to form a waveform as shown in Figure 4 (d), the load current (iM) ) = Discharge current ic 1- ic 2 to form a waveform as shown in FIG. 4 (g).

이와 같이 동작하는 본 고안은 가변코일(L1, L2)의 리액턴스 값을 조정하므로서, 다이리스터의 유통각(β, γ)을 가변시키며, 또한, 전원 공급부와 주하를 전기적으로 차단시켜, 전원전압에 포함된 고조파 성분이 모우터에 전달되지 못하게 하므로서, 구동효율을 개선할 뿐만 아니라, 모우터의 수명연장 소음 및 진동을 감소시킬 수 있는 효과를 제공하는 것이다.The present invention operating as described above adjusts the reactance values of the variable coils (L 1 , L 2 ), thereby varying the distribution angles (β, γ) of the die thruster, and electrically cutting off the power supply and the main By preventing the harmonics contained in the voltage from being transferred to the motor, not only the driving efficiency is improved, but also the effect of reducing the noise and vibration of the motor may be extended.

Claims (1)

다이리스터를 이용한 모우터의 속도 제어 회로에 있어서, 전원전압(V) 단자의 일측에 가변코일(L1)을 통하여다이리스터(Q1),(Q2)와 다이리스터(Q3),(Q4)를 각각 직렬로 하여 병렬 접속시키고, 상기 다이리스터(Q1),(Q2)의 접속점에는 콘덴서(C1)를, 다이리스터(Q3),(Q4)의 접속점에는 콘덴서(C2)를 접속하여, 전원전압(V) 단자의 타측에 접속시키며, 상기 다이리스터(Q2),(Q4)의 접속점을 전원전압(V) 단자의 타측에서 가변코일(L2)을 통하여 일단이 접속된 통상의 구동 모우터(M)에 접속시키어 구성됨을 특징으로 하는 유도 전동기의 속도 제어회로.In the speed control circuit of a motor using a thyristor, the thyristors Q 1 , Q 2 , and the thyristor Q 3 , () through the variable coil L 1 on one side of the power supply voltage V terminal. Q 4 ) are connected in series and connected in parallel, respectively, and the capacitor C 1 is connected to the connection points of the thyristors Q 1 and Q 2 , and the capacitor (C 3 ) is connected to the connection points of the thyristors Q 3 and Q 4 . C 2 ) to the other side of the power supply voltage (V) terminal, and connects the connection points of the thyristors (Q 2 ) and (Q 4 ) to the variable coil (L 2 ) on the other side of the power supply voltage (V) terminal. Speed control circuit of the induction motor, characterized in that the one end is connected to the normal drive motor (M) connected through.
KR2019840012756U 1984-12-06 1984-12-06 Arrangement for controlling the speed of motor KR870001210Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019840012756U KR870001210Y1 (en) 1984-12-06 1984-12-06 Arrangement for controlling the speed of motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019840012756U KR870001210Y1 (en) 1984-12-06 1984-12-06 Arrangement for controlling the speed of motor

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KR860008919U KR860008919U (en) 1986-07-31
KR870001210Y1 true KR870001210Y1 (en) 1987-03-27

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KR2019840012756U KR870001210Y1 (en) 1984-12-06 1984-12-06 Arrangement for controlling the speed of motor

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