JPS6125631B2 - - Google Patents
Info
- Publication number
- JPS6125631B2 JPS6125631B2 JP3860879A JP3860879A JPS6125631B2 JP S6125631 B2 JPS6125631 B2 JP S6125631B2 JP 3860879 A JP3860879 A JP 3860879A JP 3860879 A JP3860879 A JP 3860879A JP S6125631 B2 JPS6125631 B2 JP S6125631B2
- Authority
- JP
- Japan
- Prior art keywords
- elevator
- field
- armature
- power supply
- motor
- 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
- 238000004804 winding Methods 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 6
- 230000005284 excitation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000011017 operating method Methods 0.000 description 3
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Description
【発明の詳細な説明】
本発明は他励界磁巻線を持つ直流電動機を駆動
電動機とするエレベータにおいて、エレベータ乗
かごとつり合い錘りの不平衡を利用した停電時の
運転制御に関するものである。[Detailed Description of the Invention] The present invention relates to operation control during a power outage in an elevator whose drive motor is a DC motor having separately excited field windings, using imbalance between the elevator car and the counterweight. .
エレベータ運転中に停電が発生するとエレベー
タは制御機能を失ない非常制動により停止する。
非常制動を行なつたエレベータは正規着床ゾーン
に停止できない場合が殆んどなので、乗客は停電
事故が復帰するか或いはビルの非常電源により運
転が再開されるまで階床間に停止したエレベータ
内に閉じ込められることになる。 If a power outage occurs during elevator operation, the elevator will stop using emergency braking without losing control functions.
In most cases, an elevator that has undergone emergency braking cannot stop in its normal landing zone, so passengers must remain in the stopped elevator between floors until the power outage is restored or operation is resumed by the building's emergency power source. will be confined to.
このような状態において、乗客に与える不安感
は非常に大きなものであり、できるだけ早くエレ
ベータを正規着床位置まで運転させることが望ま
しい。 In such a situation, the sense of anxiety caused to the passengers is very large, and it is desirable to operate the elevator to the normal landing position as soon as possible.
前記問題を解消する手段として、従来より停電
時のエレベータの運転について種々の提案がなさ
れている。それらの幾つかを以下説明する。 As means for solving the above problem, various proposals have been made regarding the operation of elevators during power outages. Some of them will be explained below.
(1) エレベータの乗かご１は、第１図の如く主索
２によりつり合い錘３とは綱車４に反対方向に
吊り下げられている。また綱車４はエレベータ
駆動用電動機の回転子５に結合されている。エ
レベータの乗かご１とつり合い錘３は例えば乗
かげ１の定格積載量の45％で両者が平衡するよ
うに設定されている。エレベータが停電で非常
停止した際、若し両者が不平衡であれば電磁ブ
レーキ６に開放指令を与えればエレベータは不
平衡トルクにより動きだす。このままではエレ
ベータは一定加速してしまうので、適当なタイ
ミングでブレーキ動作と開放を繰返せば低速で
エレベータを運転できる。エレベータが最寄階
に到着した時点でブレーキにより停止させれば
よい。(1) As shown in FIG. 1, an elevator car 1 is suspended by a main rope 2 from a sheave 4 in the opposite direction to a counterweight 3. The sheave 4 is also coupled to a rotor 5 of an elevator drive motor. The elevator car 1 and the counterweight 3 are set so that they are balanced at, for example, 45% of the rated load capacity of the car 1. When the elevator comes to an emergency stop due to a power outage, if both are unbalanced, a release command is given to the electromagnetic brake 6, and the elevator starts moving due to the unbalanced torque. If this continues, the elevator will accelerate at a constant rate, so by repeatedly applying and releasing the brakes at appropriate timings, the elevator can be operated at low speed. When the elevator reaches the nearest floor, it can be stopped using the brake.
(2) 乗かご１とつり合い錘３が平衡状態にあり不
平衡による運転が期待できない場合には、第２
図の如く駆動用電動機の回転子５に補助電動機
７を結合させておき、非常用電源の蓄電池８と
補助電動機７により回転子５を介しエレベータ
の運転を行なう。(2) If car 1 and counterweight 3 are in equilibrium and operation due to unbalance cannot be expected, the second
As shown in the figure, an auxiliary motor 7 is coupled to the rotor 5 of the drive motor, and the elevator is operated via the rotor 5 using a storage battery 8 as an emergency power source and the auxiliary motor 7.
(3) 直流電動駆動のエレベータでは、その電機子
に蓄電池から直流電流を供給して加速又は制動
トルクを発生させてエレベータの運転を行な
う。(3) In a DC electric drive elevator, DC current is supplied from a storage battery to the armature to generate acceleration or braking torque to operate the elevator.
(4) ３相電動機駆動のエレベータでは、１次巻線
の２巻線に直流電流を供給し不平衡トルクに対
して発電制動トルクを発生させながらエレベー
タの運転を行なう。(4) In an elevator driven by a three-phase electric motor, direct current is supplied to two of the primary windings, and the elevator is operated while generating dynamic braking torque in response to unbalanced torque.
以上、エレベータ電源停電時の運転方法を幾つ
か述べたが、不平衡時の運転方法として例えば(1)
に説明した方法は、比較的低価格で実現できるが
運転時の乗心地と精度の悪さはまぬがれない。ま
た(3)の方法では不平衡運転時に電機子に供給する
直流電源容量が大きくなる。ギヤレス直流巻上機
の場合には乗かごとり合い錘の不平衡トルクが直
接電機子の軸にかかるので、ギヤード巻上機の場
合より更に条件が悪くなる。また(3)の場合、直流
電源は電機子供給分以外に他励界磁巻線の励磁、
ブレーキ励磁、運転操作回路の分も必要となる。 Above, we have described several operating methods during an elevator power outage, but examples of operating methods during unbalance include (1)
Although the method described in 2 can be realized at a relatively low cost, it suffers from poor driving comfort and poor precision. Furthermore, in method (3), the capacity of the DC power supply supplied to the armature during unbalanced operation increases. In the case of a gearless DC hoist, the unbalanced torque of the car weight is applied directly to the armature shaft, so the conditions are even worse than in the case of a geared hoist. In the case of (3), the DC power supply is used for excitation of the externally excited field winding in addition to the electric power supply.
Brake excitation and driving operation circuits are also required.
本発明は他励界磁線を持つ直流電動機を駆動電
動機とするエレベータにおいて、蓄電池等の比較
的小容量の非常用電源設備でありながら正確に且
つ乗心地よく階床間に非常停止したエレベータを
運転駆動できる直流エレベータの停電時制御装置
を提供することを目的とする。 The present invention is capable of operating an elevator that has made an emergency stop between floors accurately and with a comfortable ride, in an elevator whose drive motor is a DC motor with separately excited field magnetic lines, even though it is equipped with a relatively small capacity emergency power supply such as a storage battery. An object of the present invention is to provide a power outage control device for a DC elevator that can be driven.
以下第３図を参照して本発明の一実施例を説明
する。尚、図で第１，２図と同一部分には同符号
を付してそれらの説明は省略する。図で９は平常
時直流電動機の電機子１０の電圧を制御する交―
直変換装置、１１は直流主回路接触器、１２は電
機子回路短絡用接触器、１３は直流電動機の他励
界磁巻線、１４は平常時他励界磁巻線１３を励磁
するための直流電源、１５は停電時に界磁電流を
供給する蓄電池等の比較的小容量の非常用直流電
源、１６は界磁電流を制御する直流―直流変換装
置、１７は界磁電流指令回路、１８は制御回路で
あり、１９は界磁電源切換接触器である。また２
０は積載荷重に対し第４図のような信号を発生す
る荷重検出装置であり、第４図で原点は平衡状態
を示す。次にリレー回路で、６ｃは電磁ブレーキ
６のコイル、１２ｃと１９ｃは前記電機子回路短
絡用接触器１２、界磁電源切換え接信器１９の
夫々励磁コイル、２１は電源平常時に付勢される
継電器（図示せず）のｂ接点、２２は不平衡荷重
であることを検出すると付勢される継電器（図示
せず）のａ接点、２３は正規着床ゾーンで開放す
るリミツトスイツチである。尚、平常時のブレー
キコイル６ｃの励磁回路２４は省略し単にブラツ
クボツクスで示す。また制御電源Ｐ，Ｎは無停電
電源から供給される。 An embodiment of the present invention will be described below with reference to FIG. In the figure, the same parts as in FIGS. 1 and 2 are designated by the same reference numerals, and their explanation will be omitted. In the figure, 9 is an alternating current that controls the voltage of the armature 10 of the DC motor under normal conditions.
A direct current converter, 11 is a DC main circuit contactor, 12 is an armature circuit short-circuit contactor, 13 is a separately excited field winding of the DC motor, and 14 is for exciting the separately excited field winding 13 under normal conditions. 15 is a relatively small-capacity emergency DC power source such as a storage battery that supplies field current in the event of a power outage; 16 is a DC-DC converter that controls field current; 17 is a field current command circuit; 18 is It is a control circuit, and 19 is a field power supply switching contactor. Also 2
0 is a load detection device that generates a signal as shown in FIG. 4 in response to a live load, and in FIG. 4, the origin indicates an equilibrium state. Next, in the relay circuit, 6c is a coil of the electromagnetic brake 6, 12c and 19c are excitation coils of the armature circuit short-circuit contactor 12 and field power supply switching contactor 19, respectively, and 21 is energized during normal power supply. The B contact 22 of a relay (not shown) is energized when an unbalanced load is detected, and the A contact 23 is a limit switch that opens in the normal landing zone. The excitation circuit 24 for the brake coil 6c during normal operation is omitted and is simply shown as a black box. Further, control power supplies P and N are supplied from an uninterruptible power supply.
次に上記装置の動作を説明する。エレベータ運
転中に停電が発生してエレベータが階床間に停止
し、且つ不平衡であることを検出すると接点２２
が閉じるので短絡用接触器コイル１２ｃ、切換用
接触器コイル１９が励磁され、接触器１２を閉じ
て電動機電機子回路を短絡しまた接触器１９が切
換つて停電時の界磁電源１５を選択する。同時に
ブレーキコイル６ｃが励磁されブレーキが開放さ
れる。他励界磁巻線１３に与えられる電流値は界
磁電流指令１７ａが指令するが、この指令信号１
７ａは界磁電流指令回路１７において荷重検出装
置２０からの荷重信号２０ａを例えば平方根演算
して求められる。そして直流―直流変換装置１６
は界磁電流指令信号１７ａを受けた制御回路１８
の動きにより直流電源１５から界磁巻線１３に供
給される電流を制御する。直流一直流変換装置１
６は降圧チヨツパ回路、制御回路１８はPWM回
路などによつて構成さられる。 Next, the operation of the above device will be explained. When a power outage occurs during elevator operation, the elevator stops between floors, and when an unbalance is detected, contact 22
is closed, the short-circuit contactor coil 12c and the switching contactor coil 19 are energized, and the contactor 12 is closed to short-circuit the motor armature circuit, and the contactor 19 switches to select the field power source 15 at the time of power outage. . At the same time, the brake coil 6c is energized and the brake is released. The field current command 17a commands the current value given to the separately excited field winding 13, and this command signal 1
7a is obtained by calculating, for example, the square root of the load signal 20a from the load detection device 20 in the field current command circuit 17. And DC-DC converter 16
is the control circuit 18 that receives the field current command signal 17a.
The current supplied from the DC power supply 15 to the field winding 13 is controlled by the movement of the field winding 13 . DC to DC converter 1
Reference numeral 6 includes a step-down chopper circuit, and control circuit 18 includes a PWM circuit.
次にこの装置によるエレベータの速度制御につ
いて述べる。他励界磁巻線を持つ直流電動機は次
に関係式が立つ。 Next, the elevator speed control using this device will be described. The following relational expression holds for a DC motor with separately excited field windings.
ＴM＝PMIfIa ……(1)
ＶM＝PMIfω ……(2)
Ia＝ＶM／ＲM ……(3)
但し、ＴMは電動機の発生トルク、ＶMは電動機
の内部誘起電圧、Ｐは極数、Ｍは界磁巻線と電機
子巻線の相互インダクタンス、Ifは界磁電流、Ia
は電機子電流、ωは回転角速度、ＲMは電機子抵
抗を示す。接触器１２の電機子１０短絡状態にお
いて、円部誘起電圧ＶMのときの電機子電流Iaは
電機子抵抗ＲMにより(3)式で定まる。ブレーキ開
放と同時に不平衡トルクT0によりエレベータが
動きだすと、界磁電流Ifにより電動機は(2)式に示
す誘起電圧を生じ電機子電流Iaが流れて発電制御
トルクＴMを生じる。制御トルクＴMと回転角速度
ωとの関係を(1)乃至(3)式から求めると下式とな
る。 T M = PMIfIa ... (1) V M = PMIfω ... (2) Ia = V M / R M ... (3) However, T M is the generated torque of the motor, V M is the internal induced voltage of the motor, and P is the number of poles, M is the mutual inductance between the field winding and armature winding, If is the field current, Ia
is the armature current, ω is the rotational angular velocity, and R M is the armature resistance. When the armature 10 of the contactor 12 is short-circuited, the armature current Ia when the circular part induced voltage V M is determined by the equation (3) using the armature resistance R M. When the elevator starts moving due to the unbalanced torque T 0 at the same time as the brake is released, the electric motor generates an induced voltage shown in equation (2) due to the field current If, and the armature current Ia flows to generate the power generation control torque T M . The relationship between the control torque T M and the rotational angular velocity ω is determined from equations (1) to (3) as shown below.
ＴM＝（PMIf）2ω／ＲM ……(4)
(4)式から明らかなように、ある不平衡トルクに対
して界磁電流Ifを与えれば、｜T0｜＝｜ＴM｜と
なるような一定回転角速度ωを得ることができ
る。 T M = (PMIf) 2 ω/R M ...(4) As is clear from equation (4), if the field current If is given for a certain unbalanced torque, |T 0 |= |T M | It is possible to obtain a constant rotational angular velocity ω such that
例えば不平衡トルクがT01おとき界磁電流Ｉf１
を与えて一定回転角度ω１を得たとすれば、不平
衡トルクがT02＝2T01のときにはＩf２＝√２Ｉf
１の界磁電流を与えれば同一回転角速度ω１を得
ることができる。 For example, when the unbalanced torque is T 01 , the field current I f1
If we obtain a constant rotation angle ω 1 by giving
If a field current of 1 is given, the same rotational angular velocity ω 1 can be obtained.
上記のようにエレベータ積載量による不平衡ト
ルクは荷重信号２０ａにより凝似的に知ることが
できるので、荷重信号２０ａの平方根演算値を界
磁電流指令１７ａとして与えて界磁流値を界磁電
流指令１７ａとして与えて界磁電流Ifを制御すれ
ば、不平衡トルクT0の大きさによらずエレベー
タの一定速度制御が可能となる。このようにして
運転されたエレベータが着床ゾーンに到達する
と、リミツトスイツチ２３が開きブレーキコイル
６ｃが消勢されブレーキが働きエレベータは停止
する。 As mentioned above, the unbalanced torque due to the elevator loading amount can be known approximately from the load signal 20a, so the square root calculation value of the load signal 20a is given as the field current command 17a, and the field current value is set as the field current. If it is given as the command 17a and the field current If is controlled, constant speed control of the elevator becomes possible regardless of the magnitude of the unbalanced torque T0 . When the elevator operated in this manner reaches the landing zone, the limit switch 23 is opened, the brake coil 6c is deenergized, and the brake is activated to stop the elevator.
以上述ベたように、本発明ではエレベータの乗
かごとり合い錘の不平衡トルクを用い、エレベー
タ駆動用直流電動機の電機子を短絡すると共に他
励界磁巻線の電流を蓄電池等による直流電源と直
流―直流変換装置とその制御回路により制御する
ことにより電動機に発電制動トルクを発生させて
エレベータの速度制御を行なうので、停電による
非常制動でエレベータが階床間に停止した場合エ
レベータを最寄階まで運転することができる。ま
た従来の方法に比べて乗心地もよく運転回路、制
御回路を除けば界磁電流制御のみを行なうので、
界磁を一定励磁して電機子制御を行なう方法に比
べると蓄電池の容量も小さくてすむ。また不平衡
度が小さい場合の界磁電流値は小さくて済む利点
もある。更にエレベータはリミツトスイツチ２３
により着床ゾーンに到達すると停止するので正確
に着床位置に停止する。 As mentioned above, in the present invention, the unbalanced torque of the counterweight of the elevator car is used to short-circuit the armature of the DC motor for driving the elevator, and to convert the current of the separately excited field winding into a DC power supply using a storage battery or the like. By controlling the DC-DC converter and its control circuit, the elevator speed is controlled by generating dynamic braking torque in the motor, so if the elevator stops between floors due to emergency braking due to a power outage, the elevator can be moved to the nearest floor. You can drive up to the floor. Also, compared to the conventional method, the riding comfort is better, and since only the field current control is performed except for the driving circuit and control circuit,
Compared to the method of controlling the armature by constant excitation of the field, the capacity of the storage battery can be small. There is also the advantage that the field current value can be small when the degree of unbalance is small. Furthermore, the elevator has a limit switch 23.
Since it stops when it reaches the landing zone, it stops exactly at the landing position.
第１図はエレベータの略構成図、第２図は蓄電
池と補助電動機による停電時における従来のエレ
ベータ運転方法を示す略構成図、第３図は本発明
の一実施例を示す回路図、第４図は同実施例にお
ける荷重検出装置の特性図である。
１……乗かご、３……つり合い錘、６，６ｃ…
…電磁ブレーキとコイル、１０，１３……直流電
動機の電機子と他励界磁巻線、１２，１２ｃ……
電機子短絡用接触器と励磁コイル、１５……蓄電
池、１６……直流―直流変換器、１７……界磁電
流指令回路、１９，１９ｃ……界磁電源切換接触
器と励磁コイル、２０……荷重検出装置、２１…
…電源平常時開路するｂ接点、２２……不平衡荷
重時閉路するａ接点、２３……正規着床ゾーン開
くリミツトスイツチ。
FIG. 1 is a schematic configuration diagram of an elevator, FIG. 2 is a schematic configuration diagram showing a conventional elevator operating method during a power outage using a storage battery and an auxiliary electric motor, FIG. 3 is a circuit diagram showing an embodiment of the present invention, and FIG. The figure is a characteristic diagram of the load detection device in the same embodiment. 1... Car, 3... Counterweight, 6,6c...
...Electromagnetic brake and coil, 10, 13... DC motor armature and separately excited field winding, 12, 12c...
Armature short circuit contactor and excitation coil, 15...Storage battery, 16...DC-DC converter, 17...Field current command circuit, 19, 19c...Field power supply switching contactor and excitation coil, 20... ...Load detection device, 21...
...B contact that opens when the power supply is normal, 22...A contact that closes when there is an unbalanced load, 23... Limit switch that opens the normal landing zone.
Claims (1)
されるエレベータにおいて、蓄電池等の非常用直
流電源と、乗かご荷重を検出する荷重検出装置
と、停電時乗かご荷重とつり合い錘が不平衡であ
ることを条件に他励界磁巻線を常用界磁電源から
前記非常用直流電源に切換える界磁電源切換接触
器と、停電時乗かご荷重とつり合い錘が不平衡で
あることを条件に電動機電機子を短絡して発電制
動回路を形成する電機子短絡用接触器と、停電時
乗かご荷重とつり合い錘が不平衡であることを条
件にかご制動を開放する電磁ブレーキと、停電時
前記荷重検出装置の荷重信号に基き乗かご荷重と
つり合い錘の不平衡により生ずる不平衡トルクと
等しい電動機発生トルクを得られるように前記非
常用直流電源から前記直流電動機の他励界磁巻線
に供給される界磁電流を制御する制御回路と、乗
かご着床ゾーンに到着すると動作して前記界磁電
源切換接触器、電機子短絡用接触器及び電磁ブレ
ーキを復帰させるリミツトスイツチとからなる直
流エレベータの停電時制御装置。1. In an elevator driven by a DC motor with separately excited field windings, an emergency DC power source such as a storage battery, a load detection device that detects the car load, and a weight that balances the car load in the event of a power outage are unbalanced. A field power supply switching contactor that switches the separately excited field winding from the regular field power supply to the emergency DC power supply on the condition that the An armature short-circuit contactor that shorts the armature to form a dynamic braking circuit, an electromagnetic brake that releases car braking on the condition that the car load and balancing weight are unbalanced in the event of a power outage, and Based on the load signal of the detection device, the emergency DC power supply supplies a separately excited field winding of the DC motor so as to obtain a motor generated torque equal to the unbalanced torque caused by the unbalance of the car load and the counterweight. DC elevator power outage consisting of a control circuit that controls the field current, and a limit switch that operates upon arrival at the car landing zone and restores the field power switching contactor, armature shorting contactor, and electromagnetic brake. Time control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3860879A JPS55130472A (en) | 1979-03-31 | 1979-03-31 | Controller for direct current elevator when electricity is cut off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3860879A JPS55130472A (en) | 1979-03-31 | 1979-03-31 | Controller for direct current elevator when electricity is cut off |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55130472A JPS55130472A (en) | 1980-10-09 |
| JPS6125631B2 true JPS6125631B2 (en) | 1986-06-17 |
Family
ID=12529973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3860879A Granted JPS55130472A (en) | 1979-03-31 | 1979-03-31 | Controller for direct current elevator when electricity is cut off |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55130472A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001354366A (en) * | 2000-06-14 | 2001-12-25 | Mitsubishi Electric Corp | Control device for elevator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57151573A (en) * | 1981-03-17 | 1982-09-18 | Tokyo Shibaura Electric Co | Controller for elevator |
-
1979
- 1979-03-31 JP JP3860879A patent/JPS55130472A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001354366A (en) * | 2000-06-14 | 2001-12-25 | Mitsubishi Electric Corp | Control device for elevator |
| JP4663849B2 (en) * | 2000-06-14 | 2011-04-06 | 三菱電機株式会社 | Elevator control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55130472A (en) | 1980-10-09 |
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