JPS5829715B2 - Yuudou Dendo Kinoseigyosouchi - Google Patents
Yuudou Dendo KinoseigyosouchiInfo
- Publication number
- JPS5829715B2 JPS5829715B2 JP12103375A JP12103375A JPS5829715B2 JP S5829715 B2 JPS5829715 B2 JP S5829715B2 JP 12103375 A JP12103375 A JP 12103375A JP 12103375 A JP12103375 A JP 12103375A JP S5829715 B2 JPS5829715 B2 JP S5829715B2
- Authority
- JP
- Japan
- Prior art keywords
- phase
- motor
- diode
- opening
- closing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Stopping Of Electric Motors (AREA)
Description
【発明の詳細な説明】
この発明は交流エレベータを駆動する誘導電動機の制御
装置に関するもので、できるだけ少ない素子数と接点数
で加減速制御が行えるようにしたものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for an induction motor that drives an AC elevator, and is designed to perform acceleration/deceleration control with as few elements and contacts as possible.
以下図示実施例によりこの発明を説明すると、Ｒ，Ｓ
、Ｔは三相交流電源、１は三相誘電動機でその各相に固
定子巻線Ｕ、Ｖ、Ｗを有している。The present invention will be explained below with reference to the illustrated embodiments.
, T is a three-phase AC power supply, and 1 is a three-phase dielectric motor having stator windings U, V, and W for each phase.
２．３はサイリスタ、４はダイオード、５はダイオード
４と並列に接続され、直流制動時に開放される開閉器で
あり、この開閉器５とダイオード４の並列回路は、上記
サイリスタ２，３とともに電動機１の中性点側に△結線
されている。2.3 is a thyristor, 4 is a diode, and 5 is a switch that is connected in parallel with the diode 4 and is opened during DC braking.The parallel circuit of this switch 5 and the diode 4 is connected to the electric motor together with the thyristors 2 and 3. 1 is connected to the neutral point side.
６は電動機１のＶ相を直流制動時に電源端子Ｓから切離
すための開閉器、７は直流制動時に電源端子Ｓから切離
された電動機１のＶ相を電源端子Ｒに切換接続するため
の開閉器、８は直流制動時に電動機１のＷ相を短絡する
ための開閉器である。6 is a switch for disconnecting the V phase of the motor 1 from the power supply terminal S during DC braking, and 7 is a switch for switching and connecting the V phase of the motor 1, which has been disconnected from the power supply terminal S during DC braking, to the power supply terminal R. A switch 8 is a switch for short-circuiting the W phase of the motor 1 during DC braking.
このような構成において、起動時に開閉器５゜６を閉成
し、開閉器７，８を開放すると、第２図に示す回路とな
る。In such a configuration, when the switch 5.6 is closed and the switches 7 and 8 are opened at startup, the circuit shown in FIG. 2 is obtained.
ここで、サイリスタ２，３の点弧角を制御することによ
り滑らかな起動を行なうことができる。Here, by controlling the firing angles of the thyristors 2 and 3, smooth startup can be achieved.
次に制動時は、開閉器５，６を開放し、開放器７，８を
閉成すると、第３図に示す回路となる。Next, when braking, the switches 5 and 6 are opened and the switches 7 and 8 are closed, resulting in the circuit shown in FIG. 3.
ここで、電源端子Ｒ，Ｔが＋。の極性では、サイリスタ
２を点弧すると、電流がＲ−Ｕ−２−Ｔの回路を流れ、
また電源端子Ｒ９Ｔが一２十の極性では、サイリスタ３
を点弧すると、Ｔ−３−Ｖ−Ｈの回路を流れるので直流
全波制動をかけることができる。Here, power terminals R and T are +. With polarity, when thyristor 2 is ignited, current flows through the circuit R-U-2-T;
In addition, when the power terminal R9T has a polarity of 120, the thyristor 3
When ignited, the current flows through the T-3-V-H circuit, allowing DC full-wave braking to be applied.
上記ダイオード４は電源の極性が逆になったとき、必ら
ずサイリスタを一旦消弧させるための転流用ダイオード
の働きをする。The diode 4 always functions as a commutating diode to temporarily extinguish the thyristor when the polarity of the power supply is reversed.
もしも、ダイオード４がないと考えれば、電源端子Ｒ，
Ｔが＋。If we consider that there is no diode 4, the power terminal R,
T is +.
の極性で電流がＲ−Ｕ−２−Ｔの回路を流れていて、電
源端子Ｒ，Ｔの極性が−２＋になっても電動機１の巻線
のインダクタンスが大きいため、サイリスタ３を点弧す
ると、Ｕ相に流れていた電流がＵ−２−３−Ｖを通して
流れ続けるので、サイリスタ２は制御不可能となり、急
激に大きな制動トルクが発生し、滑らかな減速を特徴と
する特許ベータ、ホイスト等の奏上電動機としては使用
できない。Even if the polarity of the power terminals R and T becomes -2+, the inductance of the winding of the motor 1 is large, so when the thyristor 3 is ignited, , as the current flowing in the U-phase continues to flow through U-2-3-V, thyristor 2 becomes uncontrollable, and a large braking torque is suddenly generated, resulting in patent beta, hoist, etc. characterized by smooth deceleration. It cannot be used as an electric motor.
しかし、この発明はダイオード４を設けることにより、
Ｕ相の逆起電力が太きいとき、ダイオード４を通して電
流がＵ−４−Ｖの回路を流れるので、サイリスタ３を点
弧すると、サイリスタ２には逆電圧が印加されることと
なり、サイリスタ２からサイリスタ３への転流が確実に
行なわれるので、サイリスタ２を消弧することができる
。However, in this invention, by providing the diode 4,
When the U-phase back electromotive force is large, current flows through the diode 4 through the U-4-V circuit, so when thyristor 3 is fired, a reverse voltage is applied to thyristor 2, and from thyristor 2 Since commutation to the thyristor 3 is reliably performed, the thyristor 2 can be turned off.
またダイオード４のフライホイール効果により、サイリ
スタ２，３に逆電圧がかかつている時にも、Ｕ相、■相
に同一方向の電流が流れるので、制動トルクを増大させ
ることができる。Furthermore, due to the flywheel effect of the diode 4, even when a reverse voltage is applied to the thyristors 2 and 3, currents flow in the same direction in the U phase and ■ phase, so that the braking torque can be increased.
以上述べたようにこの発明の制御装置は、できるだけ少
ない素子数と接点数とで安価に構成することができると
ともに、滑らかな加減速制御が行なえるので、エレベー
タ、ホイスト等の巻上電動機に使用して好適なものであ
る。As described above, the control device of the present invention can be constructed at low cost with as few elements and contacts as possible, and can perform smooth acceleration/deceleration control, so it can be used in hoisting motors such as elevators and hoists. It is suitable for this purpose.
第１図はこの発明の誘導電動機の制御装置の一実施例を
示す回路図、第２図は起動時の回路図、第３図は制動時
の回路図である。
図中、Ｒ，Ｓ、Ｔは三相交流電源、１は誘導電動機、２
，３はサイリスタ、４はダイオード、５〜８は開閉器で
ある。FIG. 1 is a circuit diagram showing an embodiment of the induction motor control device of the present invention, FIG. 2 is a circuit diagram at the time of starting, and FIG. 3 is a circuit diagram at the time of braking. In the diagram, R, S, and T are three-phase AC power supplies, 1 is an induction motor, and 2
, 3 is a thyristor, 4 is a diode, and 5 to 8 are switches.
Claims (1)
制御可能な２個のサイリスタとをΔ接続し、かつ上記ダ
イオードには開閉器を並列に接続するとともに、上記ダ
イオードの両端が電動機の巻線を介して接続される電動
機の二相のうち、その第１の相を電源に対し開閉する第
１の開閉手段、上記第１の相と第２の相間を開閉する第
２の開閉手段、及び第３の相の上記電動機巻線の両端に
接続された第３の開閉手段を設け、上記電動機の直流制
動時は、上記第１の開閉手段により電動機の第１の相を
電源から切離し、かつ上記第２の開閉手段により上記電
動機の切離された第１の相を上記第２の相に切換接続し
、しかも上記第３の開閉手段を閉じるとともに、上記開
閉器を開放して上記ダイオードを△結線回路に挿入し、
さらに上記２個のサイリスタを点弧制御することで直流
制動トルクを制御できるようにしたことを特徴とする誘
導電動機の制御装置。1. A diode and two thyristors capable of controlling torque are connected in delta to the neutral point of a three-phase induction motor, and a switch is connected in parallel to the diode, and both ends of the diode are connected to the windings of the motor. A first opening/closing means for opening and closing the first phase of the two phases of the electric motor connected via a line to the power supply, a second opening/closing means for opening and closing between the first phase and the second phase; and a third opening/closing means connected to both ends of the motor winding of the third phase, and when the motor is DC-braked, the first opening/closing means disconnects the first phase of the motor from the power supply, The second switching means switches and connects the disconnected first phase of the motor to the second phase, and the third switching means is closed, and the switch is opened to connect the diode. Insert into the △ connection circuit,
Furthermore, a control device for an induction motor is characterized in that DC braking torque can be controlled by controlling the firing of the two thyristors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12103375A JPS5829715B2 (en) | 1975-10-07 | 1975-10-07 | Yuudou Dendo Kinoseigyosouchi |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12103375A JPS5829715B2 (en) | 1975-10-07 | 1975-10-07 | Yuudou Dendo Kinoseigyosouchi |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5245020A JPS5245020A (en) | 1977-04-08 |
| JPS5829715B2 true JPS5829715B2 (en) | 1983-06-24 |
Family
ID=14801145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12103375A Expired JPS5829715B2 (en) | 1975-10-07 | 1975-10-07 | Yuudou Dendo Kinoseigyosouchi |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5829715B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0253575B2 (en) * | 1983-01-31 | 1990-11-19 | Riken Keikinzoku Kogyo Kk |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05264196A (en) * | 1992-03-19 | 1993-10-12 | Shinko Pantec Co Ltd | Pre-fabricated unit for heat exchanging tower such as cooling tower and the like and heat exchanging tower employing said unit |
-
1975
- 1975-10-07 JP JP12103375A patent/JPS5829715B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0253575B2 (en) * | 1983-01-31 | 1990-11-19 | Riken Keikinzoku Kogyo Kk |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5245020A (en) | 1977-04-08 |
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