JPH04275069A - Controller for elevator - Google Patents
Controller for elevatorInfo
- Publication number
- JPH04275069A JPH04275069A JP3033907A JP3390791A JPH04275069A JP H04275069 A JPH04275069 A JP H04275069A JP 3033907 A JP3033907 A JP 3033907A JP 3390791 A JP3390791 A JP 3390791A JP H04275069 A JPH04275069 A JP H04275069A
- Authority
- JP
- Japan
- Prior art keywords
- noise
- elevator
- common mode
- power supply
- inverter
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 abstract description 10
- 230000002411 adverse Effects 0.000 abstract description 3
- 230000002238 attenuated effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
- Elevator Control (AREA)
Abstract
Description
［発明の目的］ [Purpose of the invention]
【０００１】0001
【産業上の利用分野】本発明はインバ―タ―制御方式を
用いたエレベ―タ―の制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control system using an inverter control system.
【０００２】0002
【従来の技術】エレベ―タ―制御装置の進歩には近年目
ざましい物がある。特に、半導体技術の進歩と制御理論
の裏付によるマイクロコンピュ―タ―を用いた制御技術
の進歩は目ざましく、交流電動機をインバ―タ―を用い
て制御する技術はこれにより格段の発展をした。エレベ
―タ―の制御装置に於いても、中低速エレベ―タはもち
ろんの事、高い着床精度と滑らかな乗り心地を要求され
るギヤレスエレベ―タ―には長い間制御の容易な直流モ
―タ―が用いられて来たが、ベクトル制御等交流機を直
流機並に制御する技術が確率されしかも、ディジタル制
御の進歩により比較的簡単に実現出来る様になった為、
今では、個人用エレベ―タ―を始めとしてギヤレスエレ
ベ―タ―に至るまでほとんどのエレベ―タ―の制御がイ
ンバ―タ―制御に代わって来ている。BACKGROUND OF THE INVENTION There has been remarkable progress in elevator control systems in recent years. In particular, progress in control technology using microcomputers due to advances in semiconductor technology and the support of control theory has been remarkable, and the technology for controlling AC motors using inverters has made significant progress. . In terms of elevator control equipment, DC motors, which are easy to control, have long been used not only for medium- and low-speed elevators, but also for gearless elevators that require high landing precision and smooth ride comfort. However, technology such as vector control that controls AC machines as well as DC machines has been established, and advances in digital control have made it relatively easy to realize.
Nowadays, inverter control has replaced the control of most elevators, from personal elevators to gearless elevators.
【０００３】このインバ―タ―には、広く電圧型インバ
―タ―が使用されている。また、変換素子には自己消弧
型の高速スイッチグ可能素子が採用され、出力電流波形
をより正弦波に近づける為に、ＰＷＭ制御が用いられて
いる。ところで、インバ―タ―が動作すると、すなわち
上記高速スイッチング素子が動作（オン−オフ動作を繰
り返す）すると、ラインのインダクタンスや、素子に蓄
積されたキャリヤ―の影響でスイッチングサ―ジが発生
する。Voltage type inverters are widely used as this inverter. Furthermore, a self-extinguishing high-speed switching element is used as the conversion element, and PWM control is used to make the output current waveform more similar to a sine wave. By the way, when the inverter operates, that is, when the high-speed switching elements operate (repeating on-off operations), switching surges occur due to line inductance and carriers accumulated in the elements.
【０００４】この急峻なスイッチングサ―ジ電圧は電源
ラインを伝わる誘導ノイズとして、また、他のラインに
影響を及ぼす放射ノイズとして動作し他の機器に悪影響
を及ぼす。[0004] This steep switching surge voltage acts as inductive noise transmitted through the power supply line and as radiated noise that affects other lines, adversely affecting other equipment.
【０００５】特に、エレベ―タ―のように建築物のなか
に設置される機器においては電波の受信や、館内放送等
の音響機器に悪影響を及ぼすことになる。この為、これ
らのノイズはラジオノイズとも呼ばれる事がある。[0005] Particularly in equipment installed in a building such as an elevator, it has a negative effect on radio wave reception and audio equipment such as in-building broadcasting. For this reason, these noises are sometimes called radio noise.
【０００６】ところで、これらのラジオノイズは多くは
エレベ―タ―の電源を伝わる誘導ノイズとしてラジオや
放送機器の電源に誘導されガ―ガ―、ビ―ビ―と言うノ
イズ音を発生する。この為一般には電源に高周波ノイズ
カット用のラインフィルタ―を設け一般的には数百ＫＨ
Ｚから２ＭＨＺ程度の周波数帯域のノイズを減衰させて
いる。これらノイズの抑制基準については、居住環境に
対する国際的な環境保全の動きの中で、各種取り決めが
なされてきている。図６に一般的な国際基準であるＣＩ
ＳＰＲの基準を示す。By the way, most of these radio noises are induced into the power supply of radios and broadcasting equipment as induced noise transmitted through the power supply of the elevator, and generate noise sounds such as gar-gar and beep-beep. For this reason, a line filter is generally installed in the power supply to cut high frequency noise, and generally the power supply is several hundred kilohertz.
Noise in the frequency band from Z to about 2 MHZ is attenuated. Regarding these noise suppression standards, various agreements have been made in the midst of international environmental conservation movements for living environments. Figure 6 shows CI, a common international standard.
The standard of SPR is shown.
【０００７】また、図３にインバ―タ―制御エレベ―タ
―におけるノイズの伝搬経路について示す。ノイズは伝
搬過程から分類して、放射ノイズ（Ａ）〜（Ｃ）と導体
ノイズに分類され、さらに導体ノイズはノ―マルモ―ド
ノイズ（Ｄ）〜（Ｆ）とコモンモ―ドノイズ（Ｇ）〜（
Ｈ）に分類される。そして、エレベ―タ―制御機器にお
けるノイズ発生源としてはインバ―タ―制御装置からの
スイッチングノイズにより電源ラインを伝わったり（ノ
―マルモ―ド）、ラインとア―ス間の浮遊容量により対
ア―スに流れこんで行く（コモンモ―ドノイズ）。
そしてこれらのノイズは図３に示す客先の通信機器やＯ
Ａ機器に悪影響を及ぼす事になる。そして、これらのノ
イズによる悪影響への対策としてノ―マルモ―ド及びコ
モンモ―ドノイズ除去用のノイズフィルタ―を電源に挿
入するのが通常である。図２に電源ラインにラインフィ
ルタ―を設けた従来のノイズ対策について示す。また、
図４に標準的なノイズフィルタ―を示す。このノイズフ
ィルタ―は素子のスイッチングに起因するノイズ、特に
電源ラインを伝わる誘導ノイズの除去を目的にしている
為、数百ＫＨＺ〜２ＭＨＺ程度の周波数帯域のノイズレ
ベルを低減する様に設計されている。フィルタ―の周波
数特性を図５に示す。Further, FIG. 3 shows a noise propagation path in an inverter-controlled elevator. Noise is classified based on the propagation process into radiation noise (A) to (C) and conductor noise, and conductor noise is further divided into normal mode noise (D) to (F) and common mode noise (G) to (
It is classified as H). Sources of noise in elevator control equipment include switching noise from the inverter control device, which is transmitted through the power line (normal mode), and stray capacitance between the line and ground. - flowing into the space (common mode noise). These noises are caused by the customer's communication equipment and O
This will have a negative impact on equipment A. As a countermeasure against the adverse effects of these noises, a noise filter for removing normal mode and common mode noises is usually inserted into the power supply. Figure 2 shows a conventional noise countermeasure in which a line filter is provided on the power supply line. Also,
Figure 4 shows a standard noise filter. This noise filter is designed to reduce the noise level in the frequency band of several hundred KHz to 2 MHz, as it aims to remove noise caused by switching elements, especially induced noise transmitted through power lines. . Figure 5 shows the frequency characteristics of the filter.
【０００８】[0008]
【発明が解決しようとする課題】上述したように、電源
に設けたノイズフィルタ―では、ＰＷＭ周波数に起因す
る低周波のノイズ、特にスタックからダイレクトに浮遊
容量を通じてア―スに流れる低周波のコモンモ―ドノイ
ズは除去出来ない。この為、ホテルやビル等の音響機器
を始めとしてエレベ―タ―が起動するとノイズが入ると
言う不具合を招く事になる。[Problems to be Solved by the Invention] As mentioned above, the noise filter installed in the power supply can handle low frequency noise caused by the PWM frequency, especially low frequency common noise that flows directly from the stack to the ground through stray capacitance. - Noise cannot be removed. This causes problems such as noise from sound equipment in hotels, buildings, etc. when elevators start up.
【０００９】また、従来からこの低周波ノイズを、特に
コモンモ―ドノイズをカットする方法としてインバ―タ
―の入力を絶縁トランスで絶縁する方法があるが、この
方法はトランスが大がかりな物となり、設置スペ―ス及
びコストの問題を抱えている。[0009] Conventionally, there has been a method of insulating the input of the inverter with an isolation transformer as a method of cutting this low frequency noise, especially common mode noise, but this method requires a large transformer and requires installation. There are space and cost issues.
【００１０】本発明はこのような、電源に誘導されるノ
イズを絶縁トランスの様な大型の機器を用いる事無くノ
イズ低減させる事のできるエレベ―タ―制御装置を提供
することを目的とする。
［発明の構成］[0010] An object of the present invention is to provide an elevator control device that can reduce noise induced in a power supply without using large equipment such as an isolation transformer. [Structure of the invention]
【００１１】[0011]
【課題を解決するための手段及び作用】本発明は比較的
周波数の低いコモンモ―ドノイズを絶縁トランスに代わ
り、減衰させるために、直接ノイズの発生源であるスタ
ックから発生するノイズをコンデンサ―により、ＦＣ（
フレ―ムグラウンド）を通じてア―スに逃がす様にした
エレベ―タ―制御装置を提供する。[Means and effects for solving the problems] In order to attenuate relatively low frequency common mode noise by replacing it with an isolation transformer, the present invention uses a capacitor to reduce the noise generated from the stack, which is the direct source of noise, by using a capacitor. FC(
To provide an elevator control device that allows air to escape to earth through the frame ground.
【００１２】0012
【実施例】本発明の構成、作用について図１を用いて説
明する。図中３はインバ―タ―主回路であり交流を直流
に変換する整流器と、直流を交流に変換するトランジス
タ―等で構成された変換器、及び平滑用コンデンサ―で
構成されている。また、図中２は電源ラインに挿入され
たノイズ除去用のラインフィルタ―であり電源ラインを
通じて誘導するノイズをここで除去する。また図中７は
本発明で示すコモンモ―ド除去フィルタ―であり、交流
電源整流後の直流回路のマイナスラインと制御盤に設け
た客先より支給されるア―ス電位間をコンデンサ―で接
続している。コンデンサ―の接続はスタック内マイナス
ラインの最短位置で配線インピ―ダンスを極力少なくす
るように接続する。また、制御盤に供給されるア―スは
建て屋に接続されたア―スとする。本発明の作用につい
て説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure and operation of the present invention will be explained with reference to FIG. In the figure, 3 is the inverter main circuit, which is composed of a rectifier that converts alternating current to direct current, a converter composed of transistors that convert direct current to alternating current, and a smoothing capacitor. Further, numeral 2 in the figure is a line filter for noise removal inserted into the power supply line, which removes noise induced through the power supply line. In addition, 7 in the figure is the common mode rejection filter shown in the present invention, which connects the negative line of the DC circuit after rectifying the AC power supply and the ground potential provided by the customer provided on the control panel with a capacitor. are doing. Connect the capacitor at the shortest point of the negative line in the stack to minimize wiring impedance. In addition, the ground supplied to the control panel shall be the ground connected to the building. The operation of the present invention will be explained.
【００１３】エレベ―タ―運転時に発生するノイズの多
くは図３に示すように電源に伝わって客先の他の系統に
及ぼす誘導ノイズとインバ―タ―制御用のスタックから
スイッチングノイズが浮遊容量を通じて直接ア―スに流
れ、建て屋の他の音響機器に影響を及ぼすコモンモ―ド
ノイズとに分類される。今、エレベ―タ―に起動指令が
起こりインバ―タ―が制御をスタ―トすると各変換素子
が、インバ―タ―制御指令を受けてスイッチング動作を
始め、配線インダクタンスやスナバ―の効果、素子の動
作特性の相互作用等により決まるスイッチングノイズを
発生する。このスイッチングノイズの内、電源を伝わっ
て行くノイズは図中２の電源に設けたノイズ除去用の高
周波カットのノイズフィルタ―で減衰カットする。また
、スイッチング素子及びスタックから空間の浮遊容量を
通じて流れていたコモンモ―ドノイズは、スタックのマ
イナス電位とア―ス間に設けたコモンモ―ドノイズ除去
用の本発明によるコモンモ―ド低減用コンデンサ―で吸
収することにより、従来ア―スを伝わり他の系統の機器
に回り込んでいたノイズがインピ―ダンスの低い回路で
カットされ、建て屋に於けるノイズ環境を大幅に改善す
る事が可能となる。これにより、ほとんど、絶縁トラン
スに依る低周波ノイズの低減効果と同様の効果を得るこ
とが出来る。[0013] Most of the noise generated during elevator operation is caused by stray capacitance caused by inductive noise that is transmitted to the power supply and affects other systems of the customer, and switching noise from the inverter control stack, as shown in Figure 3. It is classified as common mode noise, which flows directly to the earth through the ground and affects other audio equipment in the building. Now, when a start command is issued to the elevator and the inverter starts control, each conversion element starts switching operation in response to the inverter control command, and the effect of wiring inductance and snubber, It generates switching noise determined by the interaction of the operating characteristics of the Of this switching noise, the noise that propagates through the power supply is attenuated and cut by a high-frequency cut noise filter for noise removal provided on the power supply (2 in the figure). In addition, the common mode noise flowing from the switching elements and the stack through the stray capacitance in the space is absorbed by the common mode reduction capacitor of the present invention, which is installed between the negative potential of the stack and the ground. By doing so, the noise that conventionally travels through the ground and circulates to other equipment is cut by a low-impedance circuit, making it possible to significantly improve the noise environment in the building. Thereby, it is possible to obtain almost the same effect of reducing low frequency noise as that achieved by an isolation transformer.
【００１４】[0014]
【発明の効果】本発明によれば、スタックの発生するコ
モンモ―ドノイズをア―スとスタック間に設けたコンデ
ンサ―により低減させる事により、電源に発生するノイ
ズ電圧を低減出来るばかりでなく、浮遊容量によりア―
スを通じて他の機器に影響を及ぼすのを防ぐ事が出来る
。また、絶縁トランスによるノイズ減衰効果とほぼ等し
い効果を小型で実現する事が出来る為、機械室にトラン
ス設置用のスペ―スを確保する必要がなくなる。[Effects of the Invention] According to the present invention, by reducing the common mode noise generated by the stack by using the capacitor provided between the ground and the stack, it is possible to not only reduce the noise voltage generated in the power supply, but also to reduce the noise voltage generated in the power supply. Depending on the capacity
This prevents the device from affecting other devices through the device. Furthermore, since it is possible to achieve a noise attenuation effect almost equivalent to that of an isolation transformer in a smaller size, there is no need to secure space for installing the transformer in the machine room.
【図面の簡単な説明】[Brief explanation of the drawing]
【図１】本発明によるエレベ―タ―制御装置の実施例の
構成図である。FIG. 1 is a configuration diagram of an embodiment of an elevator control device according to the present invention.
【図２】従来のエレベ―タ―制御装置の構成図である。FIG. 2 is a configuration diagram of a conventional elevator control device.
【図３】エレベ―タ―に於けるノイズ伝搬経路の概要図
である。FIG. 3 is a schematic diagram of a noise propagation path in an elevator.
【図４】ノイズ軽減フィルタ―の構成図である。FIG. 4 is a configuration diagram of a noise reduction filter.
【図５】ノイズフィルタ―の周波数特性図である。FIG. 5 is a frequency characteristic diagram of a noise filter.
【図６】ノイズ規制に対する基準（ＣＩＳＰＲ）を示す
グラフである。FIG. 6 is a graph showing standards for noise regulation (CISPR).
１…３相交流電源 ２…ノイズ
フィルタ―３…インバ―タ―主回路 ４…巻
上機５…エレベ―タ―乗かご ６…カウンタ
―ウエイト７…コモンノイズ除去コンデンサ―1... 3-phase AC power supply 2... Noise filter - 3... Inverter - main circuit 4... Hoisting machine 5... Elevator - car 6... Counter weight 7... Common noise removal capacitor -
Claims (1)
、３相交流電源と前記インバ―タ―回路との間に設けら
れ前記インバ―タ―回路のノイズを除去するラインフィ
ルタ―と、前記インバ―タ―回路の直流部に設けられた
コモンモ―ドノイズ除去用回路とを有するエレベ―タ―
制御装置。[Claim 1] An inverter circuit that drives a hoist, and a line filter that is provided between a three-phase AC power source and the inverter circuit and removes noise in the inverter circuit. , an elevator having a common mode noise removal circuit provided in the DC section of the inverter circuit.
Control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3033907A JPH04275069A (en) | 1991-02-28 | 1991-02-28 | Controller for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3033907A JPH04275069A (en) | 1991-02-28 | 1991-02-28 | Controller for elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04275069A true JPH04275069A (en) | 1992-09-30 |
Family
ID=12399588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3033907A Pending JPH04275069A (en) | 1991-02-28 | 1991-02-28 | Controller for elevator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04275069A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005170561A (en) * | 2003-12-09 | 2005-06-30 | Toshiba Elevator Co Ltd | Elevator system |
| JP2010280458A (en) * | 2009-06-02 | 2010-12-16 | Mitsubishi Electric Corp | Control device of elevator |
| JP2012521941A (en) * | 2009-03-31 | 2012-09-20 | オーチス エレベータ カンパニー | Elevator regenerative drive device with air-core inductor |
-
1991
- 1991-02-28 JP JP3033907A patent/JPH04275069A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005170561A (en) * | 2003-12-09 | 2005-06-30 | Toshiba Elevator Co Ltd | Elevator system |
| JP2012521941A (en) * | 2009-03-31 | 2012-09-20 | オーチス エレベータ カンパニー | Elevator regenerative drive device with air-core inductor |
| US8827042B2 (en) | 2009-03-31 | 2014-09-09 | Otis Elevator Company | Elevator regenerative drive including an air core inductor |
| JP2010280458A (en) * | 2009-06-02 | 2010-12-16 | Mitsubishi Electric Corp | Control device of elevator |
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