JPH0517079A - Speed controller for inverter for elevator - Google Patents
Speed controller for inverter for elevatorInfo
- Publication number
- JPH0517079A JPH0517079A JP3173581A JP17358191A JPH0517079A JP H0517079 A JPH0517079 A JP H0517079A JP 3173581 A JP3173581 A JP 3173581A JP 17358191 A JP17358191 A JP 17358191A JP H0517079 A JPH0517079 A JP H0517079A
- Authority
- JP
- Japan
- Prior art keywords
- deceleration
- speed
- control
- inverter
- constant
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
- B66B1/14—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. push-buttons, for indirect control of movements
- B66B1/16—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. push-buttons, for indirect control of movements with means for storing pulses controlling the movements of a single car or cage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
- B66B1/285—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical with the use of a speed pattern generator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
- B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Elevator Control (AREA)
- Control Of Ac Motors In General (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、エレベータ用インバー
タによる誘導電動機の速度制御装置に係り、特にオープ
ンループ速度制御系による加減速制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed control device for an induction motor using an elevator inverter, and more particularly to an acceleration / deceleration control device using an open loop speed control system.
【０００２】[0002]
【従来の技術】最近のエレベータは原動機に誘導電動機
を採用し、この誘導電動機を可変電圧・可変周波数（Ｖ
ＶＶＦ）になるインバータによって駆動するものが多
い。このような誘導電動機とインバータを組み合わせた
エレベータ駆動装置において、誘導電動機の速度制御
は、一般的には低速エレベータには電圧形インバータに
よるオープンループ制御が採用され、中・高速エレベー
タには速度検出器を設けた速度フィードバック制御が採
用されている。2. Description of the Related Art Recently, an elevator uses an induction motor as a prime mover, and this induction motor has a variable voltage / variable frequency (V
Many of them are driven by an inverter that becomes VVF). In such an elevator drive device that combines an induction motor and an inverter, speed control of the induction motor is generally performed by open-loop control using a voltage source inverter for low speed elevators and speed detectors for medium and high speed elevators. The speed feedback control provided with is adopted.
【０００３】このうち、オープンループ速度制御方式
は、速度パターンに従ってインバータの出力周波数さら
には出力電圧を制御することによって該速度パターンに
一致する加速，定速及び減速を得ようとする。この制御
方式では速度検出器を不要にして低コストになると共に
速度検出系の故障に対するバックアップ手段を不要にす
るが、電動機速度すなわちエレベータ乗車かごの速度さ
らには昇降距離データを与える速度検出系を持たないた
め、負荷変動によって着床精度を悪くする。Among them, the open loop speed control system tries to obtain acceleration, constant speed and deceleration that match the speed pattern by controlling the output frequency and further the output voltage of the inverter according to the speed pattern. This control method does not require a speed detector, resulting in low cost, and a backup means for failure of the speed detection system is unnecessary. However, it has a speed detection system that gives motor speed, that is, elevator car speed, and ascending / descending distance data. Since it does not exist, landing accuracy is deteriorated due to load fluctuation.
【０００４】この問題を解消する速度制御方式として、
本願出願人は負荷トルクの変化分を補正するものを既に
提案している（例えば、特開平１−２６８４７９号公
報）。この概要は、インバータ主回路の直流電流から電
動機のすべり周波数を求め、このすべり周波数から電動
機の出力トルク及び負荷トルクを求めてその回転数（速
度）を算出し、速度パターンとの差からインバータの周
波数及び電圧を補正する。As a speed control method for solving this problem,
The applicant of the present application has already proposed a method for correcting a change in load torque (for example, Japanese Patent Laid-Open No. 1-268479). In this outline, the slip frequency of the motor is calculated from the DC current of the inverter main circuit, the output torque and load torque of the motor are calculated from this slip frequency, and the rotation speed (speed) is calculated. Correct frequency and voltage.
【０００５】また、本願出願人は電動機の低速運転時に
大きい負荷トルクでの必要な駆動力を得るためのトルク
ブースト補正を行うのに、負荷トルクの変化分を上述の
方式と同様に直流電流からトルク検出して補正する方式
を提案している（例えば特開平１−２５２１９３号公
報）。Further, the applicant of the present application, in order to obtain the torque boost correction for obtaining a necessary driving force with a large load torque during low-speed operation of the electric motor, changes the load torque from the DC current in the same manner as in the above method. A method of detecting and correcting torque has been proposed (for example, Japanese Patent Laid-Open No. 1-252193).
【０００６】[0006]
【発明が解決しようとする課題】速度センサを持たない
オープンループ速度制御方式によるエレベータ用インバ
ータにおいて、従来装置はエレベータの高速一定領域で
の直流電流を検出することによりすべり周波数を求め、
このすべり周波数から電動機速度補正及びトルク補正
し、エレベータかごの着床位置の精度を上げている。In an elevator inverter using an open loop speed control method without a speed sensor, a conventional device obtains a slip frequency by detecting a direct current in a high speed constant region of the elevator,
The speed of the motor and the torque are corrected from this slip frequency to improve the accuracy of the landing position of the elevator car.
【０００７】ところで、速度センサを備えないオープン
ループの速度制御方式においては、エレベータの負荷が
大きくなるほどすべり周波数が大きくなり、インバータ
の出力電流を増加させることになる。By the way, in the open-loop speed control method without a speed sensor, the slip frequency increases as the load of the elevator increases, and the output current of the inverter increases.
【０００８】このインバータ出力電流の増加が、逆変換
主回路のスイッチ素子の定格値を越え、スイッチ素子を
過電流破壊させることがある。このような出力電流の増
加や転流失敗時に素子や電動機（負荷）を保護するた
め、インバータ装置には過電流保護回路を設け、過電流
検出でインバータ装置を停止させるようにしている。This increase in the inverter output current may exceed the rated value of the switch element of the inverse conversion main circuit, resulting in overcurrent breakdown of the switch element. In order to protect the elements and the electric motor (load) when the output current increases or the commutation fails, the inverter device is provided with an overcurrent protection circuit, and the inverter device is stopped by detecting the overcurrent.
【０００９】この過電流停止ではエレベータの運転停止
になり、システムの信頼性を低下させるし、頻繁な保守
点検や修理を必要とする。この問題を解消するには、イ
ンバータ出力電流が過電流停止レベルまで増加する前の
段階でインバータ出力電流を制限することが考えられる
が、この電流制限では速度パターンに従った昇降速度か
ら大きく違ってしまい、着床位置が大きくずれることに
なる。In this overcurrent stop, the operation of the elevator is stopped, the reliability of the system is deteriorated, and frequent maintenance inspection and repair are required. To solve this problem, it is possible to limit the inverter output current before the inverter output current increases to the overcurrent stop level. As a result, the landing position will shift significantly.
【００１０】本発明の目的は、エレベータの負荷増加に
よる過電流停止を無くし、しかも着床精度を高めた速度
制御装置を提供することにある。An object of the present invention is to provide a speed control device which eliminates overcurrent stoppage due to an increase in the load of an elevator and has improved landing accuracy.
【００１１】[0011]
【課題を解決するための手段】本発明は、前記課題の解
決を図るため、誘導電動機をオープンループ制御のイン
バータで加速・定速・減速の速度制御をし、該減速制御
はエレベータの乗車かごが着床位置から一定の距離Ｌに
ある減速開始位置に到達したときに一定の減速度Ｄで減
速させるエレベータ用インバータの速度制御装置におい
て、インバータの出力電流が過電流停止レベルより低い
過電流制限レベルに達したことを検出する過電流制限判
定手段と、この判定手段の検出で現在の速度Ｖiに固定
した定速制御をし、この定速制御で乗車カゴが前記減速
開始位置に達したときから次式 Ｔ1＝（Ｌ／Ｖi）−（Ｖi／２Ｄ） で求める時間Ｔ1だけ定速制御をつづけ、該時間Ｔ1後に
前記減速度による減速制御を行う速度補正制御手段とを
備えたことを特徴とする。In order to solve the above-mentioned problems, the present invention controls the speed of acceleration / constant speed / deceleration of an induction motor by an open loop control inverter, and the speed reduction control is carried out by an elevator car. In an elevator inverter speed control device that decelerates at a constant deceleration D when a vehicle reaches a deceleration start position at a certain distance L from a landing position, an overcurrent limit in which the output current of the inverter is lower than an overcurrent stop level. The overcurrent limit determining means for detecting that the level has been reached and the constant speed control fixed to the current speed V i by the detection of this determining means are performed, and the boarding car has reached the deceleration start position by this constant speed control. following equation T 1 = (L / V i ) from the time - (V i / 2D) continue only the constant speed control time T 1 calculated by the, and the speed correction control means for performing deceleration control by the deceleration after said time T 1 Equipped Characterized in that was.
【００１２】[0012]
【作用】上記構成になる本発明によれば、インバータの
出力電流が過電流停止になる前に過電流制限判定を得、
このときの速度で定速制御にして過電流停止を避けたエ
レベータの運転を継続し、定速度Ｖiによる運転でエレ
ベータの乗車かごが減速開始位置に到達したときに一定
時間Ｔ1だけ速度Ｖiをつづけ、この後に速度パターンと
同じ減速度Ｄで減速することで定速度の違いにも減速開
始点から着床位置までの減速度距離を同じにし、着床精
度に速度パターンに従った制御と同等のものを得る。According to the present invention having the above configuration, the overcurrent limit judgment is obtained before the output current of the inverter is overcurrent stopped,
At this time, the elevator is kept running at a constant speed control avoiding an overcurrent stop, and when the elevator car reaches the deceleration start position during the operation at the constant speed V i , the speed V is kept for a certain time T 1. Continuing with i , and then decelerating at the same deceleration D as the speed pattern, the deceleration distance from the deceleration start point to the landing position is made the same regardless of the difference in constant speed, and the landing accuracy is controlled according to the speed pattern. Get the equivalent of.
【００１３】[0013]
【実施例】図１は本発明の一実施例を示す装置構成図で
ある。交流電源１の交流電力は整流器２によって直流電
力に変換され、コンデンサ３によって平滑される。この
直流電力は電圧形インバータ主回路４によって出力周波
数及び電圧が制御された交流電力に変換されてエレベー
タの原動機になる誘導電動機５に供給される。インバー
タ主回路４の運転周波数及び電圧の制御は、制御装置６
からのゲートパルス周波数とパルス幅制御によって行わ
れ、これにより電動機５の運転速度が制御される。電動
機５は巻取機７を介して乗車かご８と釣合い錘９の負荷
を駆動する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 is a block diagram of an apparatus showing an embodiment of the present invention. The AC power of the AC power supply 1 is converted into DC power by the rectifier 2 and smoothed by the capacitor 3. This DC power is converted into AC power whose output frequency and voltage are controlled by the voltage source inverter main circuit 4, and is supplied to the induction motor 5 that becomes the prime mover of the elevator. The control of the operating frequency and voltage of the inverter main circuit 4 is performed by the control device 6
Is controlled by the gate pulse frequency and the pulse width, and the operating speed of the electric motor 5 is controlled by this. The electric motor 5 drives the load of the riding car 8 and the counterweight 9 via the winder 7.
【００１４】ＣＰＵ１０を中枢部とする制御装置６は、
エレベータの運転指令によって、定められた加減速度を
持ちかつ昇降距離（階床移動距離）に応じた定速度時間
を持つ速度パターンを生成又は与えられ、この速度パタ
ーンとすべり演算回路１１からのすべり周波数ＳからＣ
ＰＵ１０が必要なインバータ運転周波数及び電圧（振
幅）を求め、これら周波数と電圧に従ってＰＷＭ発生部
１２にＰＷＭ波形のゲートパルスを得る。The control device 6 having the CPU 10 as a central part,
A speed pattern having a predetermined acceleration / deceleration and a constant speed time corresponding to the ascending / descending distance (floor moving distance) is generated or given by the operation command of the elevator, and the speed pattern and the slip frequency from the slip calculation circuit 11 are given. S to C
The PU 10 obtains the required inverter operating frequency and voltage (amplitude), and obtains a PWM waveform gate pulse in the PWM generator 12 in accordance with these frequencies and voltages.
【００１５】すべり演算回路１１は、従来と同様にイン
バータ主回路４の直流電流Ｉdcを検出する電流検出器１
３の検出信号ｉdcから電流−トルク変換及びトルク−す
べり周波数変換を行うことですべり周波数Ｓを求める。
なお、直流電流検出値から直接にすべり周波数を算出す
る方法も本願出願人は既に提案しており、この直接変換
による構成でも良い。The slip calculation circuit 11 is a current detector 1 for detecting the direct current I dc of the inverter main circuit 4 as in the conventional case.
The slip frequency S is obtained by performing current-torque conversion and torque-slip frequency conversion from the detection signal i dc of 3.
The applicant of the present application has already proposed a method of directly calculating the slip frequency from the detected value of the direct current, and a configuration by this direct conversion may be used.
【００１６】ＣＰＵ１０は、すべり周波数Ｓから電動機
５の出力トルク及び負荷トルクを求めて電動機５の回転
数を求め、この回転数と速度パターンとの差をインバー
タ制御出力周波数の補正信号とし、この補正した速度に
従って周波数ｆ、電圧Ｖの指令を発生する。The CPU 10 obtains the output torque and the load torque of the electric motor 5 from the slip frequency S to obtain the rotational speed of the electric motor 5, and the difference between this rotational speed and the speed pattern is used as a correction signal of the inverter control output frequency, and this correction is performed. A command of frequency f and voltage V is generated according to the speed.
【００１７】上述までの装置構成は従来と同様にされ、
本実施例ではピーク電流検出器１４とＡ／Ｄ変換器１５
と過電流制限判定部１６から成る過電流制限判定手段、
及びＣＰＵ１０の演算機能として過電流制限判定時の速
度補正制御手段を設ける。The apparatus configuration up to the above is the same as the conventional one,
In this embodiment, the peak current detector 14 and the A / D converter 15
And an overcurrent limit determining unit 16 including:
Also, a speed correction control means for determining the overcurrent limit is provided as a calculation function of the CPU 10.
【００１８】ピーク電流検出器１４は電流検出器１３の
検出電流ｉdcのピーク値Ｉppを検出し、Ａ／Ｄ変換回路
１５はピーク値Ｉppをディジタル信号に変換し、過電流
制限判定部１６はディジタル量のピーク値Ｉppが過電流
制限値に達したことを判定する。これら過電流制限判定
手段は、素子破壊保護のための従来の過電流停止判定手
段と同様の構成にされるが、判定レベルが過電流停止に
なるレベルよりも小さく設定され、過電流停止になる前
に過電流制限の判定出力を得る。The peak current detector 14 detects the peak value I pp of the detection current i dc of the current detector 13, the A / D conversion circuit 15 converts the peak value I pp into a digital signal, and the overcurrent limit determination unit 16 determines that the peak value I pp of the digital amount has reached the overcurrent limit value. These overcurrent limit determining means have the same configuration as the conventional overcurrent stop determining means for protection against element destruction, but the determination level is set to be smaller than the level at which overcurrent stoppage occurs, and overcurrent stoppage occurs. Obtain the judgment output of the overcurrent limit before.
【００１９】ＣＰＵ１０に設ける速度補正制御手段は、
過電流制限の判定が得られたときに現在速度で定速制御
し、この定速制御でエレベータの乗車かご８が減速開始
位置に達したときから一定時間Ｔ1だけ定速制御をつづ
け、該時間Ｔ1後に速度パターンと同じ減速度による減
速制御を行う。The speed correction control means provided in the CPU 10 is
When the determination of the overcurrent limit is obtained, the constant speed control is performed at the current speed, and the constant speed control is continued for a fixed time T 1 after the elevator car 8 reaches the deceleration start position by the constant speed control. After time T 1, deceleration control is performed with the same deceleration as the speed pattern.
【００２０】上述の速度補正制御手段による速度補正制
御は、過電流制限判定時に現在速度で定速制御にするこ
とで過電流停止に至るのを防止する。また、この定速制
御では速度パターンの定速度に較べて低い定速になり、
乗車かご８が減速開始位置に達したときに速度パターン
と同じ減速度で減速停止すると着床位置が大きくずれる
のを避けるため、一定時間Ｔ1の定速制御をつづけ、こ
の後に定速パターンと同じ減速度による減速で着床精度
を確保する。The speed correction control by the above-described speed correction control means prevents the overcurrent from being stopped by performing the constant speed control at the current speed when determining the overcurrent. Also, in this constant speed control, the constant speed is lower than the constant speed of the speed pattern,
In order to avoid a large shift in the landing position when the car 8 reaches the deceleration start position and decelerates and stops at the same deceleration as the speed pattern, constant speed control for a fixed time T 1 is continued, and then the constant speed pattern Securing the landing accuracy by decelerating with the same deceleration.
【００２１】図２は本実施例の動作波形図を示す。速度
パターンＶに従った加速・定速・減速制御は制御装置６
によって従来と同様に行われ、減速制御はエレベータの
乗車かご８が着床位置から一定の距離Ｌにある減速開始
位置Ｐbに到達したときに一定の減速度に制御される。
このときのインバータ出力電流Ｉoutは実線で示すよう
に加速時と減速時にピークを持つ波形になる。FIG. 2 shows an operation waveform diagram of this embodiment. Acceleration / constant speed / deceleration control according to the speed pattern V is performed by the control device 6
Performed as in the conventional manner, the deceleration control is controlled to a constant deceleration when riding car 8 in the elevator reaches the deceleration start position P b in the landing zone at a constant distance L.
The inverter output current I out at this time has a waveform having peaks during acceleration and deceleration, as shown by the solid line.
【００２２】ここで、エレベータの負荷が大きく、イン
バータ出力電流が破線で示すように増加し、過電流停止
電流Ｉocにまで上昇しようとし、該電流が判定部１６に
設定する過電流制限電流ＩCL（≦Ｉoc）に達したとき
（時刻ｔ1）、該判定部１６の判定出力によってＣＰＵ
１０の速度補正制御手段により速度パターンＶの速度に
追従することなく現在速度Ｖｉに固定し、該速度Ｖｉで
定速制御を行う。これにより、インバータ出力電流Ｉ
outは過電流停止の判定値Ｉocに至ることなく、過電流
停止が避けられ、エレベータ運転が継続される。Here, the load of the elevator is large, the inverter output current increases as shown by the broken line, and the current tries to rise to the overcurrent stop current I oc , and the current is set to the determination unit 16 by the overcurrent limiting current Ioc. When CL (≦ I oc ) is reached (time t 1 ), the determination output of the determination unit 16 causes the CPU
The speed correction control means 10 fixes the current speed Vi without following the speed of the speed pattern V, and performs constant speed control at the speed Vi. As a result, the inverter output current I
Out does not reach the determination value I oc of the overcurrent stop, the overcurrent stop is avoided, and the elevator operation is continued.
【００２３】次に、乗車かご８が減速開始点Ｐbに達す
ると、ＣＰＵ１０には減速開始点に到達したことの信号
が与えられ、この信号タイミングから一定時間Ｔ1だけ
速度Ｖiを続け、このＴ1後のタイミング（時刻ｔ2）で
速度パターンＶの減速度と同じ減速度で減速停止させ
る。Next, when the passenger car 8 reaches the deceleration start point P b, CPU 10 is supplied with the signal that has reached the deceleration start point, continued velocity V i by a predetermined time T 1 from the signal timing, At the timing after T 1 (time t 2 ), the deceleration is stopped at the same deceleration as that of the speed pattern V.
【００２４】この減速制御において、徐線で示す領域Ａ
とＢの面積が一致するよう時間Ｔ1が予め求められる。
即ち、速度パターンＶにおいて減速開始点Ｐbからの一
定の減速度によって減速停止するまでの距離は該部分の
面積に相当し、この距離が減速開始点から着床位置まで
の距離に一致するよう減速開始点が設定される。一方、
過電流制限の判定によって速度Ｖiからの同じ減速度に
よる減速停止が上記距離に一致すれば同じ着床位置にな
り、このときの距離は減速開始点Ｐb以降の面積に相当
し、両者を一致させるには領域Ａ，Ｂの面積を一致させ
るよう時間Ｔ1を演算しておく。In this deceleration control, the area A shown by the slow line
The time T 1 is obtained in advance so that the areas of B and B match.
That is, the distance to the deceleration and stop by a constant deceleration from the deceleration start point P b at a speed pattern V corresponds to the area of the partial, such that this distance is equal to the distance from the deceleration start point to the landing zone The deceleration start point is set. on the other hand,
If the deceleration stop due to the same deceleration from the speed V i coincides with the above distance by the determination of the overcurrent limit, the same landing position is obtained, and the distance at this time corresponds to the area after the deceleration start point P b , and both In order to match, the time T 1 is calculated so that the areas of the regions A and B are matched.
【００２５】このように、速度パターンの定速度とは異
なる速度からの減速に着床位置を合わせるための制御方
式は、本願出願人は既に提案しており、時間Ｔ1は次式
から求められる。As described above, the applicant of the present application has already proposed a control method for adjusting the landing position to deceleration from a speed different from the constant speed of the speed pattern, and the time T 1 can be obtained from the following equation. ..
【００２６】Ｔ1＝（Ｌ／Ｖi）−（Ｖi／２Ｄ） 但し、Ｌ：着床位置から減速開始位置までの距離 Ｖi：現在速度 Ｄ：速度パターンの減速度T 1 = (L / V i ) − (V i / 2D) where L is the distance from the landing position to the deceleration start position, V i is the current speed, and D is the deceleration of the speed pattern.
【００２７】[0027]
【発明の効果】以上のとおり、本発明によれば、エレベ
ータの負荷増によりインバータ出力電流が過電流停止レ
ベル荷まで達する前の過電流制限レベルとして判定・検
出し、この検出時の速度による定速制御を行い、乗車か
ごが減速開始点に到達したときに速度パターンによる減
速と同じ減速距離になるよう一定時間Ｔ1の減速と同じ
減速制御を行うようにしたため、エレベータの負荷増に
よる過電流停止を無くし、しかも着床精度を速度パター
ンによる場合と同等のものを得ることができる。As described above, according to the present invention, the inverter output current is judged and detected as the overcurrent limit level before reaching the overcurrent stop level load due to the increase of the load of the elevator, and the speed is set at the time of detection. Since the speed control is performed and the same deceleration control as the deceleration for the constant time T 1 is performed so that the deceleration distance becomes the same as the deceleration distance according to the speed pattern when the riding car reaches the deceleration start point, the overcurrent due to the increase in the load of the elevator is performed. It is possible to eliminate the stop and obtain the landing accuracy equivalent to that obtained by the speed pattern.
【図１】本発明の一実施例を示す装置構成図。FIG. 1 is a device configuration diagram showing an embodiment of the present invention.
【図２】実施例の動作波形図。FIG. 2 is an operation waveform diagram of the embodiment.
４…インバータ主回路、５…誘導電動機、６…制御装
置、１０…ＣＰＵ、１１…すべり演算回路、１３…電流
検出器、１４…ピーク電流検出器、１６…過電流制御判
定部。4 ... Inverter main circuit, 5 ... Induction motor, 6 ... Control device, 10 ... CPU, 11 ... Slip calculation circuit, 13 ... Current detector, 14 ... Peak current detector, 16 ... Overcurrent control determination part.
Claims (1)
バータで加速・定速・減速の速度制御をし、該減速制御
はエレベータの乗車かごが着床位置から一定の距離
（Ｌ）にある減速開始位置に到達したときに一定の減速
度（Ｄ）で減速させるエレベータ用インバータの速度制
御装置において、インバータの出力電流が過電流停止レ
ベルより低い過電流制限レベルに達したことを検出する
過電流制限判定手段と、この判定手段の検出で現在の速
度（Ｖi）に固定した定速制御をし、 この定速制御で乗車カゴが前記減速開始位置に達したと
きから次式 Ｔ1＝（Ｌ／Ｖi）−（Ｖi／２Ｄ） で求める時間Ｔ1だけ定速制御をつづけ、該時間Ｔ1後に
前記減速度による減速制御を行う速度補正制御手段とを
備えたことを特徴とするエレベータ用インバータの速度
制御装置。Claim: What is claimed is: 1. An induction motor is speed-controlled for acceleration / constant speed / deceleration by an open-loop control inverter, and the deceleration control is carried out at a constant distance (L In a speed control device for an elevator inverter that decelerates at a constant deceleration (D) when it reaches a deceleration start position, the output current of the inverter has reached an overcurrent limit level lower than an overcurrent stop level. The overcurrent limit judging means for detecting and the constant speed control fixed to the current speed (V i ) by the detection of this judging means are performed, and the following equation is calculated from the time when the boarding car reaches the deceleration start position by this constant speed control. T 1 = (L / V i ) - (V i / 2D) continue only the constant speed control time T 1 calculated by the, further comprising a speed correction control means for performing deceleration control by the deceleration after said time T 1 Characterized by Speed control device of the elevators for the inverter.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3173581A JP2888671B2 (en) | 1991-07-15 | 1991-07-15 | Speed control device for elevator inverter |
| EP93300436A EP0607646B1 (en) | 1991-07-15 | 1993-01-21 | Elevator velocity control |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3173581A JP2888671B2 (en) | 1991-07-15 | 1991-07-15 | Speed control device for elevator inverter |
| EP93300436A EP0607646B1 (en) | 1991-07-15 | 1993-01-21 | Elevator velocity control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0517079A true JPH0517079A (en) | 1993-01-26 |
| JP2888671B2 JP2888671B2 (en) | 1999-05-10 |
Family
ID=26134150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3173581A Expired - Fee Related JP2888671B2 (en) | 1991-07-15 | 1991-07-15 | Speed control device for elevator inverter |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0607646B1 (en) |
| JP (1) | JP2888671B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007007637A1 (en) * | 2005-07-11 | 2007-01-18 | Toshiba Elevator Kabushiki Kaisha | Speed control device, speed control method, and speed control program for elevator |
| JP2009044879A (en) * | 2007-08-09 | 2009-02-26 | Jtekt Corp | Motor control apparatus, transmission ratio variable unit, and vehicular steering device |
| US7658268B2 (en) | 2004-10-28 | 2010-02-09 | Mitsubishi Electric Corporation | Control device without a speed sensor for controlling speed of a rotating machine driving an elevator |
| CN114212631A (en) * | 2021-11-04 | 2022-03-22 | 深圳市海浦蒙特科技有限公司 | Elevator operation control method and device, elevator and computer readable storage medium |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5677519A (en) * | 1996-02-29 | 1997-10-14 | Otis Elevator Company | Elevator leveling adjustment |
| US5777280A (en) * | 1996-08-27 | 1998-07-07 | Otis Elevator Company | Calibration routine with adaptive load compensation |
| US5889238A (en) * | 1996-11-12 | 1999-03-30 | Otis Elevator Company | Deceleration time for an elevator car |
| EP2006232B1 (en) * | 2006-04-13 | 2019-01-23 | Mitsubishi Electric Corporation | Elevator device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4835553A (en) * | 1971-09-08 | 1973-05-25 | ||
| JPH02124981U (en) * | 1989-03-23 | 1990-10-15 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59203074A (en) * | 1983-05-06 | 1984-11-17 | 株式会社日立製作所 | Hydraulic elevator |
| JPS60183990A (en) * | 1984-02-29 | 1985-09-19 | Mitsubishi Electric Corp | Speed controller of elevator |
| JPH0817599B2 (en) * | 1988-04-18 | 1996-02-21 | 日本オーチス・エレベータ株式会社 | Elevator speed controller |
-
1991
- 1991-07-15 JP JP3173581A patent/JP2888671B2/en not_active Expired - Fee Related
-
1993
- 1993-01-21 EP EP93300436A patent/EP0607646B1/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4835553A (en) * | 1971-09-08 | 1973-05-25 | ||
| JPH02124981U (en) * | 1989-03-23 | 1990-10-15 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7658268B2 (en) | 2004-10-28 | 2010-02-09 | Mitsubishi Electric Corporation | Control device without a speed sensor for controlling speed of a rotating machine driving an elevator |
| WO2007007637A1 (en) * | 2005-07-11 | 2007-01-18 | Toshiba Elevator Kabushiki Kaisha | Speed control device, speed control method, and speed control program for elevator |
| JP2007015844A (en) * | 2005-07-11 | 2007-01-25 | Toshiba Elevator Co Ltd | Speed controller for elevator, speed control method, and speed control program |
| US7954604B2 (en) | 2005-07-11 | 2011-06-07 | Toshiba Elevator Kabushiki Kaisha | Elevator speed control device, elevator speed controlling method and elevator speed controlling program |
| JP2009044879A (en) * | 2007-08-09 | 2009-02-26 | Jtekt Corp | Motor control apparatus, transmission ratio variable unit, and vehicular steering device |
| CN114212631A (en) * | 2021-11-04 | 2022-03-22 | 深圳市海浦蒙特科技有限公司 | Elevator operation control method and device, elevator and computer readable storage medium |
| CN114212631B (en) * | 2021-11-04 | 2023-11-14 | 深圳市海浦蒙特科技有限公司 | Elevator operation control method and device, elevator and computer readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0607646B1 (en) | 1996-10-16 |
| JP2888671B2 (en) | 1999-05-10 |
| EP0607646A1 (en) | 1994-07-27 |
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