JP4632795B2 - Electric power supply device for elevator car - Google Patents

Electric power supply device for elevator car Download PDF

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JP4632795B2
JP4632795B2 JP2005006468A JP2005006468A JP4632795B2 JP 4632795 B2 JP4632795 B2 JP 4632795B2 JP 2005006468 A JP2005006468 A JP 2005006468A JP 2005006468 A JP2005006468 A JP 2005006468A JP 4632795 B2 JP4632795 B2 JP 4632795B2
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floor
elevator car
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power transmission
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宏之 高木
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Mitsubishi Electric Corp
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Description

この発明は、制御ケーブルを使用することなくエレベーター乗りかごに電力を供給するエレベーター乗りかごの電力供給装置に関するものである。   The present invention relates to an elevator car power supply device that supplies power to an elevator car without using a control cable.

従来のエレベーターの乗りかご（以下「乗りかご」という）には、照明器具や扉駆動装置、さらには表示器など各種の電気機器が搭載されているので、乗りかごに制御ケーブルを接続し、これを介して電力を供給する方法が一般的に採用されていた。
しかし、この制御ケーブルは、エレベーター昇降路の壁面などに接触する虞れがあり、且つ乗りかごに掛かる重量の増加をもたらすので、制御ケーブルを使用しない給電方式、いわゆる制御ケーブルレス方式（非接触式）の発明がすでに多数提案されている。
例えば、特許文献１では昇降路壁（各停止階床）に設置した複数の送電部を運行状況に応じて、オン、オフする給電制御手段を設け、エレべ−ターの運行状況に連動してオンすべき送電部を選択し、選択された送電部だけがオンされ、乗りかご側に電力を供給する非接触給電装置が提案されている。又、特許文献２では、設置数を減らすため、エレベーターのサービスする階床数より少ない特定階床にだけ給電器を設け、乗りかごが停止したときに、給電可能な位置で昇降路壁側の給電器と乗りかご側の給電器を非接触式にカップリングさせ、昇降路壁側から乗りかご側へ電力を供給する非接触式の電力供給装置が提案されている。 Conventional elevator cars (hereinafter referred to as “cars”) are equipped with various electrical devices such as lighting fixtures, door drive devices, and displays, so a control cable is connected to the car. In general, a method of supplying electric power through the network is adopted.
However, since this control cable may come into contact with the wall of the elevator hoistway and increase the weight on the car, a power feeding method that does not use a control cable, a so-called control cable-less method (non-contact type) Many inventions have been proposed.
For example, in Patent Document 1, power supply control means for turning on and off a plurality of power transmission units installed on hoistway walls (each stop floor) according to the operation status is provided, and interlocked with the operation status of the elevator. There has been proposed a non-contact power feeding apparatus that selects a power transmission section to be turned on, turns on only the selected power transmission section, and supplies power to the car side. Also, in Patent Document 2, in order to reduce the number of installations, a power feeder is provided only on a specific floor that is less than the number of floors serviced by the elevator, and when the car stops, it is located on the hoistway wall side at a position where power can be supplied. A non-contact type power supply device has been proposed in which a power feeder and a car-side power feeder are coupled in a non-contact manner and power is supplied from the hoistway wall side to the car side.

特開２００２−３０９６号公報JP 2002-3096 A 特開２００１−１３９２４２号公報JP 2001-139242 A

上記従来のエレベーター乗りかごの電力供給装置では、信頼性の推持や損失の軽減に充分な配慮がされているとはいえず、エレベーターの性能向上に問題があった。上記従来技術では、何れも、電力供給のための制御ケーブルを無くすことができるが、電力供給器を用いた従来技術の場合はその電力供給器が有接点方式であるため、信頼性の維持のためのコストを避けるのが困難である。
一方、非接触給電器を用いた従来技術の場合、その給電器の送電部は、非接触で電力を供給するため、半導体などの制御素子を高周波でスイッチング動作をさせて電磁誘導作用を生じさせる必要があり、スイッチング動作に伴う損失の発生を避けるのが難しい。このため、エレベーターの運行状況に連動して必要な送電部のみ選択してオンさせようとしているが、その為には乗りかごの位置情報が別途必要であり、位置センサが必要となる。
この発明は、これらの問題点を解決するためになされたもので、その目的は、乗りかごに対する電力供給を非接触給電にしても信頼性の維持に掛かるコストが抑えられると共に、個別の位置センサを用いずとも非接触給電器の台数増加時に損失の増加が抑えられるようにしたエレベーター乗りかごの電力供給装置を提供することにある。 In the above conventional elevator car power supply device, it cannot be said that sufficient consideration has been given to reliability and loss reduction, and there has been a problem in improving the performance of the elevator. In any of the above prior arts, it is possible to eliminate the control cable for power supply. However, in the case of the prior art using a power supply device, the power supply device is a contact type, so that reliability can be maintained. It is difficult to avoid costs.
On the other hand, in the case of the prior art using a non-contact power feeder, the power transmission unit of the power feeder supplies power in a non-contact manner, so that a control element such as a semiconductor is switched at a high frequency to generate an electromagnetic induction effect. It is necessary to avoid the loss caused by the switching operation. For this reason, only the necessary power transmission section is selected and turned on in conjunction with the operation status of the elevator. However, for this purpose, position information of the car is required separately, and a position sensor is required.
The present invention has been made in order to solve these problems. The object of the present invention is to reduce the cost of maintaining the reliability even if the electric power supply to the car is a non-contact electric power supply. It is an object of the present invention to provide a power supply device for an elevator car that can suppress an increase in loss when the number of non-contact power feeders is increased without using a motor.

この発明に係わるエレベーター乗りかごの電力供給装置は、エレベーター乗りかご側に設置した受電部と各停止階床側に設置した送電部とからなる電力供給装置を用い、エレベーター乗りかごが何れかの階床に停止している時に停止階床側からエレベーター乗りかご側に電力の給電を非接触で行なうエレベーター乗りかごの電力供給装置において、上記送電部は、発振周波数が各階床毎に個別に設定される共に、
上記受電部は、上記送電部からの電力により上記エレベーター乗りかごが扉開閉可能エリアに到達しているかどうかを判別する位置検出手段と、発振周波数検出手段と、階床判定手段とを有するかご位置検出部を備え、上記送電部と上記受電部間に、上記発振周波数検出手段によって上記発振周波数を検出することにより上記エレベーター乗りかごの到達階床を判別し、且つ上記位置検出手段の判別動作に基づいて上記送電部から上記受電部への給電を行う給電制御手段を設け、
上記各階床の送電部には、上記エレベーター乗りかごの走行中、個別の低周波数で動作させると共に、上記エレベーター乗りかごが所定の階床に到達しこの階床の送電部が上記受電部と対峙した時、高周波数で動作させる周波数制御手段を設けたものである。 An electric power supply device for an elevator car according to the present invention uses an electric power supply device comprising a power receiving unit installed on the elevator car side and a power transmission unit installed on each stop floor side, and the elevator car is on any floor. In an elevator car power supply device that performs non-contact power supply from the stop floor side to the elevator car side when stopped on the floor, the power transmission unit has the oscillation frequency set individually for each floor Together
The power receiving unit has a car position having position detecting means for determining whether or not the elevator car has reached the door opening / closing area by the electric power from the power transmitting part, oscillation frequency detecting means, and floor determining means. A detection unit, which determines the arrival floor of the elevator car by detecting the oscillation frequency by the oscillation frequency detection unit between the power transmission unit and the power reception unit, and performs the determination operation of the position detection unit; A power supply control means for supplying power from the power transmission unit to the power reception unit based on
The power transmission unit of each floor is operated at an individual low frequency while the elevator car is running, and the elevator car reaches a predetermined floor, and the power transmission unit of this floor faces the power receiving unit. when the, is provided with a frequency control means for operating at high frequencies.

この発明のエレベーター乗りかごの電力供給装置によれば、乗りかごに対する電力供給を非接触給電にして信頼性を維持するために掛かるコストが抑えられると共に、個別の位置センサを用いずとも、非接触給電器の台数増加時でも、損失の増加が抑えることができる。
又、非接触給電器を各階床毎に設け、その部分に位置検出手段を備えることにより、それまで個別に設けていた着床可能エリアを検出する位置検出器（一般的に乗りかご側に検出部、昇降路側の各停止位置に検出部と対向する位置にプレートを配置して、位置検出器を構成している）を不要とすることができる。すなわち、個別に設けていた位置検出器（扉開閉エリア検出装置など）が、非接触給電装置と兼用することによって不要となる。又どの階床にいるかの絶対位置検出も容易に実現可能となる。
又、電力供給しない（乗りかごが停止していない）階床の送電部は、低周波数で動作させ、電力供給する（乗りかごが停止している）階床の送電部のみ高周波数で動作させることにしたので、電力供給しない送電部の不要な電力損失を抑制し、乗りかごへ給電していないときの不要なスイッチングロスを低減させ効率向上が図れる。
又、位置検出判定手段は、エレべ−ター乗りかごが停止もしくは、近接して走行している階床のみが動作（位置検出）しており、他の階床の位置検出手段は動作していないため、この信号を制御盤に取り込むことにより、乗りかごの絶対位置検出が可能となるなどの効果がある。 According to the power supply device for an elevator car of the present invention, it is possible to reduce the cost for maintaining the reliability by making the power supply to the car a non-contact power supply, and without using an individual position sensor. Even when the number of power feeders increases, an increase in loss can be suppressed.
In addition, a non-contact power feeder is provided for each floor, and a position detection means is provided at that part, thereby detecting a possible landing area that has been individually provided until now (generally detected on the car side) The plate is disposed at a position facing the detection unit at each stop position on the hoistway side and the hoistway side to constitute a position detector). That is, a position detector (a door opening / closing area detection device or the like) that is provided separately becomes unnecessary by using it as a non-contact power supply device. Also, it is possible to easily detect the absolute position of which floor.
In addition, the power transmission unit on the floor that does not supply power (the car is not stopped) is operated at a low frequency, and only the power transmission unit on the floor that supplies power (the car is stopped) is operated at a high frequency. As a result, unnecessary power loss of a power transmission unit that does not supply power can be suppressed, and unnecessary switching loss when power is not supplied to the car can be reduced to improve efficiency.
In addition, the position detection judging means operates only the floor where the elevator car is stopped or is in close proximity (position detection), and the position detection means of other floors are operating. Therefore, there is an effect that the absolute position of the car can be detected by taking this signal into the control panel.

以下、図面に基づいて、この発明の各実施の形態を説明する。
なお、各図間において、同一符号は同一あるいは相当部分を示す。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In addition, the same code | symbol shows the same or an equivalent part between each figure.

実施の形態１．
図１は、この発明の実施の形態１であるエレベーター乗りかごの電力供給装置の全体構成図、図２は、このエレベーター乗りかごの電力供給装置１０の構成図で、この実施の形態１の主要部である乗りかごの位置検出部１３を受電部１２側に設けた場合を示している。
図において、実施の形態１に係るエレベーターは、商用電源１から供給された交流電力を、電力変換器２により可変電圧・可変周波数の交流電力に変換して電動機３に供給し、これより電動機３が可変速駆動されるようになっている。電動機３の回転軸にはシープ４の回転軸が連結してあり、このシーブ４にロープ５が巻き付けられ、このロープ５の両端に夫々エレべーターの乗りかご６とカウンタウェイト７がつるべ状に吊り下げられている。制御盤８は、図示してない回転速度指令に応じて電力変換器２を制御し、これにより可変電圧・可変周波数の交流電力が電動機３に供給され、乗りかご６の昇降移動と走行速度、それに停止が適切に得られるようにする。
電動機３の回転軸にはロータリーエンコーダ９が設けてあり、制御盤８は、このロータリーエンコーダ９の出力により、電動機３の回転速度と乗りかご位置を検出する。そして、この検出結果を上記した回転速度指令と突き合せることにより、回転速度指令通りの制御の実行が得られるようにする。 Embodiment 1 FIG.
FIG. 1 is an overall configuration diagram of an elevator car power supply apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a configuration diagram of the elevator car power supply apparatus 10 according to the first embodiment of the present invention. The case where the position detection part 13 of the car which is a part is provided on the power receiving part 12 side is shown.
In the figure, the elevator according to the first embodiment converts AC power supplied from a commercial power source 1 into AC power having a variable voltage and variable frequency by a power converter 2 and supplies the AC power to the motor 3. Is driven at a variable speed. A rotary shaft of a sheep 4 is connected to a rotary shaft of the electric motor 3, and a rope 5 is wound around the sheave 4, and an elevator car 6 and a counterweight 7 are slid around the ends of the rope 5. It is suspended. The control panel 8 controls the power converter 2 in accordance with a rotational speed command (not shown), whereby AC power of variable voltage / variable frequency is supplied to the motor 3, and the elevator 6 moves up and down and travel speed, Make sure that you get a proper stop.
A rotary encoder 9 is provided on the rotating shaft of the electric motor 3, and the control panel 8 detects the rotational speed and the car position of the electric motor 3 based on the output of the rotary encoder 9. Then, by matching the detection result with the above-described rotation speed command, the execution of control according to the rotation speed command can be obtained.

ここで、乗りかご６には、図示してないが、乗りかご内照明器具、乗りかごドア駆動装置、階床表示器など各種の電気機器があり、従って、これらに電力を供給する必要がある。しかし、この実施形態１では、乗りかご６には制御ケーブルが接続されておらず、代わりに非接触式の電力供給装置１０が設けてある。
この電力供給装置１０は、図２にその詳細を示すように、送電部１１と受電部１２に分けて独立した形で作られており、これらが対になって電力の供給が非接触で得られるようになっている。そして、送電部１１は、図１に示されているように、昇降路側のエレベーターの停止階床に各1台づつ、全体では複数台設置してあり、受電部１２は、乗りかご６の所定の場所、例えば天井などに1台だけ設置してある。
つまり、乗りかご６が各階床に停止したとき、その都度、昇降路側から乗りかご側に給電が行なえるように、昇降路のエレベーター階床毎に、夫々送電部１１（１１−１、１１−２、１１−３）を設けてある。
ここで、この実施形態１では、一例として、エレベーターのサービス階床数が３、つまり１Ｆ、２Ｆ、３Ｆの場合が示してあり、従って、送電部１１の台数は３である。
次に、電力供給装置１０について、図２を用いて詳細に説明する。
まず、送電部１１は、非接触トランスの1次巻線１１ａと、高周波でスイッチング動作をさせて電磁誘導作用を生じさせる発振回路１１ｂで構成されている。
又、乗りかご側に設置される受電部１２は、送電部の非接触トランスの1次巻線１１ａに対峙したとき、対になって電磁結合状態になる非接触トランスの２次側巻線１２ａと、整流回路１２ｂ、電力を蓄える電池や大容量のコンデンサなどの電力貯蔵器１２ｃ、１２ｃへの充電を制御する充電制御回路１２ｄとで構成されている。
又、１３は、上記構成の非接触給電装置を利用し、この装置内に設けた乗りかごの位置検出部で、位置検出手段１３ａ、周波数検出手段１３ｂ、階床判定手段１３ｃで構成され、制御盤８に接続されている。 Here, although not illustrated, the car 6 includes various electric devices such as a car lighting device, a car door driving device, and a floor indicator, and therefore, it is necessary to supply power to them. . However, in the first embodiment, a control cable is not connected to the car 6, and a non-contact power supply device 10 is provided instead.
As shown in detail in FIG. 2, the power supply device 10 is divided into a power transmission unit 11 and a power reception unit 12, and is made in an independent form. It is supposed to be. As shown in FIG. 1, a plurality of power transmission units 11 are installed on the elevator floor at the hoistway side, one in each, and a plurality of power transmission units 11 are installed on the elevator car 6. Only one unit is installed in a place such as the ceiling.
That is, each time the car 6 stops on each floor, the power transmission unit 11 (11-1, 11-) is provided for each elevator floor of the hoistway so that power can be supplied from the hoistway side to the car side. 2, 11-3).
Here, in this Embodiment 1, the case where the number of service floors of an elevator is three, ie, 1F, 2F, 3F, is shown as an example, and therefore the number of power transmission units 11 is three.
Next, the power supply apparatus 10 will be described in detail with reference to FIG.
First, the power transmission unit 11 includes a primary winding 11a of a non-contact transformer and an oscillation circuit 11b that causes a switching operation at a high frequency to generate an electromagnetic induction effect.
In addition, the power receiving unit 12 installed on the car side, when facing the primary winding 11a of the non-contact transformer of the power transmission unit, is paired and electromagnetically coupled to the secondary side winding 12a of the non-contact transformer. And a rectifier circuit 12b, and a charge control circuit 12d for controlling charging of the power storage units 12c and 12c such as a battery for storing power and a large-capacity capacitor.
Reference numeral 13 denotes a position detection unit for a car provided in the non-contact power supply apparatus having the above-described configuration, which includes a position detection means 13a, a frequency detection means 13b, and a floor determination means 13c. It is connected to the board 8.

次に、この電力供給装置１０による非接触での電力の伝達動作について説明する。
まず、送電部１１の発振回路１１ｂは、制御盤８から供給される直流電源Ｐ、Ｎ又は、ＡＣ＋、ＡＣ−を入力とした整流電圧を電力源としてスイッチング動作し、トランスの１次側巻線１１ａに高周波の交流を供給し、これにより、１次巻線１１ａから高周波の交番磁束が発生されるようにする。
この状態で、受電部１２が送電部１１に向かい合うと、図示のように、送電部１１の１次巻線１１ａによる磁束が受電部１２の２次側巻線１２ａに鎖交し、これらの間に電磁誘導作用が生じて、２次側巻線点１２ａに高周波電圧が誘起される。そうすると、この２次側巻線１２ａに誘起した高周波電圧は整流器１２ｂで整流されて直流となり、これが電力貯蔵器１２ｃに充電された結果、電力が蓄積される（なお、乗りかごの走行中は、後述するように低周波を発生させている）。
従って、乗りかご６が各階床に停止すると、夫々の送電部１１−１〜１１−３の何れかに受電部１２が向かい合う状態になり、この結果、その都度、非接触で電力の供給が行なわれ、それが電力貯蔵器１２ｃに貯蔵されることになる。そして、この電力貯蔵器１２ｃに貯蔵された電力が乗りかご内の乗りかご内照明機器、乗りかごドア駆動機器、階床表示器などの電気機器に供給されることになる。 Next, a non-contact power transmission operation by the power supply apparatus 10 will be described.
First, the oscillation circuit 11b of the power transmission unit 11 performs a switching operation using a rectified voltage input from the DC power supply P, N or AC +, AC− supplied from the control panel 8 as a power source, and the primary side winding of the transformer A high frequency alternating current is supplied to 11a, so that a high frequency alternating magnetic flux is generated from the primary winding 11a.
In this state, when the power reception unit 12 faces the power transmission unit 11, the magnetic flux generated by the primary winding 11 a of the power transmission unit 11 is linked to the secondary side winding 12 a of the power reception unit 12 as illustrated in the figure. An electromagnetic induction effect is generated in the second coil, and a high frequency voltage is induced at the secondary winding point 12a. Then, the high-frequency voltage induced in the secondary winding 12a is rectified by the rectifier 12b to become direct current, and this is charged in the power storage 12c. As a result, electric power is accumulated (while the car is running, As described later, a low frequency is generated).
Accordingly, when the car 6 stops at each floor, the power receiving unit 12 faces one of the respective power transmitting units 11-1 to 11-3, and as a result, power is supplied without contact each time. It is stored in the power storage 12c. Then, the electric power stored in the electric power storage 12c is supplied to electric devices such as an in-car lighting device, a car door driving device, and a floor display in the car.

次に、この実施の形態１の主要部である位置検出部１３の動作について説明する。
乗りかご６が各階床に停止もしくは通過する際、送電部１１の1次巻線１１ａが発生する磁束は、送電部１１−１〜１１−３の何れかの受電部１２に向かい合うため、２次側巻線１２ａに磁束が鎖交する。この鎖交磁束によって巻線１２ａに誘導される誘導電圧を検知したり、磁束を何らかの磁気検出手段で検知したりするなどして、検出値が所定値を上回った場合に、送電部１１と受電部１２が対向位置にある、即ち乗りかごが着床や扉開閉可能な位置にいると位置検出手段１３ａで判断する。この位置情報を制御盤８に伝えることにより、ロータリーエンコーダー９の情報と併せてエレベーターの制御に必要な位置検出が行える。
又、送電部１１―１〜１１−３の発振回路１１ｂの発振周波数を階床毎にそれぞれ変え個別の周波数を設定すれば、すなわち階床を判別するため送電部側の発振周波数を各階床毎に個別に設定すれば、受電部１２の周波数検出手段１３ｂで上記周波数を検知することにより、乗りかごがどこの階床にいるのかその到達階床を階床判定手段１３ｃで判別することができる。即ち絶対位置検出が可能となる。
なお、上記実施形態では、エレベーターのサービス階床数が３の場合について説明しているが、この発明の実施形態はサービス階床数に限定されるものではなく、任意の階床数のエレベーターに適用できることはいうまでもない。又、各停止階床に設けられる送電部１１は、この非接触給電装置のみのために設けるのではなく、乗場表示器や釦等への電源供給装置としても使用可能であり乗場機器との機器集約も可能である。 Next, the operation of the position detector 13 which is the main part of the first embodiment will be described.
When the car 6 stops or passes through each floor, the magnetic flux generated by the primary winding 11a of the power transmission unit 11 faces the power reception unit 12 of any one of the power transmission units 11-1 to 11-3. Magnetic flux interlinks with the side winding 12a. When the detected value exceeds a predetermined value by detecting the induced voltage induced in the winding 12a by this interlinkage magnetic flux or by detecting the magnetic flux by some magnetic detection means, the power transmission unit 11 and the power receiving unit 11 The position detecting means 13a determines that the portion 12 is at the facing position, that is, the car is at a position where the car can be landed or opened / closed. By transmitting this position information to the control panel 8, it is possible to detect the position necessary for controlling the elevator together with the information of the rotary encoder 9.
Further, if the oscillation frequency of the oscillation circuit 11b of the power transmission units 11-1 to 11-3 is changed for each floor and an individual frequency is set, that is, the oscillation frequency on the power transmission unit side is determined for each floor in order to determine the floor. If the frequency is individually set, the frequency detection means 13b of the power receiving unit 12 detects the frequency, and the floor determination means 13c can determine the floor at which the car is located. . That is, the absolute position can be detected.
In the above embodiment, the case where the number of service floors of the elevator is three is described. However, the embodiment of the present invention is not limited to the number of service floors, and an elevator of an arbitrary number of floors is used. Needless to say, this is applicable. In addition, the power transmission unit 11 provided on each stop floor is not provided only for this non-contact power feeding device, but can also be used as a power supply device for a hall indicator, a button, etc. Aggregation is also possible.

実施の形態２．
図３はこの発明の実施の形態２に係るエレベーター乗りかごの電力供給装置１０の構成図である。尚、全体構成図については図１と同様であり説明を省略する。
図３において、図２と同符号で示した部分は、図２と同一又は相当部分を示し、位置検出判定手段１４は、送電部１１側に設けられている。
次に、この実施の形態２の動作について説明する。なお、非接触給電される原理は、実施の形態１と同様である。
実施の形態２に係る送電部１１の発振回路１１ｂは、発振回路１１ｂへの周波数変換信号を低周波数から高周波数に切り換えることができるようになされていて、乗りかご６の走行中は低周波数で動作させ、乗りかご６が所定の階床に停止し送電部１１が受電部１２と対峙した時、当該送電部のみ高周波数で動作させることを基本動作としている。
位置検出動作については、乗りかご６が各階床に停止もしくは通過する際、送電部１１−１〜１１−３の何れかが受電部１２に向かい合うため、何れかの発振回路１１ｂが、受電側に電力供給を開始する。例えば、この時の発振回路１１ｂの電流上昇変化を検知し、電力供給状態検出信号を受けた位置検出判定手段１４で判別することにより、送電部１１側は乗りかごの位置検出が可能となる。
又、位置検出判定手段１４で着床（扉開閉）可能エリア、即ち乗りかごへの電力供給が可能と判断された場合には、発振回路１１ｂへの周波数変換信号を低周波数から高周波数に切り換える。 Embodiment 2. FIG.
FIG. 3 is a configuration diagram of an elevator car power supply apparatus 10 according to Embodiment 2 of the present invention. The overall configuration diagram is the same as that in FIG.
3, the part shown with the same sign as FIG. 2 shows the same or equivalent part as FIG. 2, and the position detection determination means 14 is provided in the power transmission part 11 side.
Next, the operation of the second embodiment will be described. Note that the principle of contactless power feeding is the same as in the first embodiment.
The oscillation circuit 11b of the power transmission unit 11 according to the second embodiment is configured to be able to switch the frequency conversion signal to the oscillation circuit 11b from a low frequency to a high frequency, and at a low frequency while the car 6 is traveling. When the car 6 stops at a predetermined floor and the power transmission unit 11 faces the power reception unit 12, the basic operation is to operate only the power transmission unit at a high frequency.
Regarding the position detection operation, when the car 6 stops or passes through each floor, any of the power transmission units 11-1 to 11-3 faces the power reception unit 12, and thus any oscillation circuit 11b is connected to the power reception side. Start power supply. For example, the power transmission unit 11 side can detect the position of the car by detecting the current increase change of the oscillation circuit 11b at this time and determining it by the position detection determination means 14 that has received the power supply state detection signal.
When the position detection determination means 14 determines that power can be supplied to the landing (door opening / closing) area, that is, the car, the frequency conversion signal to the oscillation circuit 11b is switched from a low frequency to a high frequency. .

このように、電力供給しない（乗りかごが停止していない）階床の送電部は、低周波数で動作させ、電力供給する（乗りかごが停止している）階床の送電部のみ高周波数で動作させることにより、電力供給しない送電部の不要な電力損失を抑制し、乗りかごへ給電していないときの不要なスイッチングロスを低減させ効率向上が図れる。但し、全く送電が断たれるわけではなく、低周波数で発振させることにより、乗りかご側に磁気結合を発生させ、位置検出は可能としている。
これは、制御盤８からの位置検出信号や動作指令信号等を特にもらうことなく、非接触給電装置１０単独で実現可能である。
又、位置検出判定手段１４は、エレべ−ター乗りかごが停止もしくは、近接して走行している階床のみが動作（位置検出）しており、他の階床の位置検出手段１４は動作していないため、この信号を制御盤８に取り込むことにより、乗りかごの絶対位置検出が可能となる。 In this way, the power transmission unit on the floor that does not supply power (the car is not stopped) is operated at a low frequency, and only the power transmission unit on the floor that supplies power (the car is stopped) at a high frequency. By operating, unnecessary power loss of the power transmission unit that does not supply power can be suppressed, and unnecessary switching loss when power is not supplied to the car can be reduced to improve efficiency. However, the power transmission is not interrupted at all, and by oscillating at a low frequency, magnetic coupling is generated on the car side, and position detection is possible.
This can be realized by the non-contact power feeding device 10 alone without receiving a position detection signal, an operation command signal, or the like from the control panel 8 in particular.
Further, the position detection judging means 14 operates (position detection) only on the floor where the elevator car stops or is running close to it, and the position detection means 14 on the other floors operate. Therefore, by taking this signal into the control panel 8, the absolute position of the car can be detected.

この発明の実施の形態１に係るエレベーター乗りかごの電力供給装置の全体構成図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a whole block diagram of the electric power supply apparatus of the elevator car which concerns on Embodiment 1 of this invention. このエレベーター乗りかごの電力供給装置の構成図で、この実施の形態１の主要部である乗りかごの位置検出部１３を受電部１２側に設けた場合を示している。FIG. 2 is a configuration diagram of the elevator car power supply device, and shows a case where a car position detection unit 13 which is a main part of the first embodiment is provided on the power receiving unit 12 side. この発明の実施の形態２に係るエレベーター乗りかごの電力供給装置の構成図で、位置検出判定手段１４は、送電部１１側に設けた場合を示している。In the block diagram of the electric power supply apparatus of the elevator car which concerns on Embodiment 2 of this invention, the case where the position detection determination means 14 is provided in the power transmission part 11 side is shown.

符号の説明Explanation of symbols

１ 商用電源 ２ 電力変換器
３ 電動機 ４ シーブ
５ ロープ ６ エレべ−ターの乗りかご
７ カウンタウェイト ８ 制御盤
９ ロータリーエンコーダ １０ 電力供給装置
１１ 送電部１、送電部２、送電部３
１１−１ １Ｆの送電部１ １１−２ ２Ｆの送電部２
１１−３ ３Ｆの送電部３ １１ａ 非接触トランスの1次巻線
１１ｂ 発振回路
１２ 受電部
１２ａ 非接触トランスの２次側巻線 １２ｂ 整流回路
１２ｃ 電力貯蔵器 １２ｄ 充電制御回路
１３ 位置検出部
１３ａ 位置検出手段 １３ｂ 周波数検出手段
１３ｃ 階床判定手段
１４ 位置検出判定手段。 DESCRIPTION OF SYMBOLS 1 Commercial power supply 2 Power converter 3 Electric motor 4 Sheave 5 Rope 6 Elevator car 7 Counterweight 8 Control panel 9 Rotary encoder 10 Power supply device 11 Power transmission unit 1, Power transmission unit 2, Power transmission unit 3
11-1 1F power transmission unit 1 11-2 2F power transmission unit 2
11-3 3F power transmission unit 3 11a primary winding of non-contact transformer 11b oscillation circuit 12 power receiving unit 12a secondary winding of non-contact transformer 12b rectifier circuit 12c power storage 12d charge control circuit 13 position detection unit 13a position Detection means 13b Frequency detection means 13c Floor determination means
14 Position detection determination means.

Claims (1)

エレベーター乗りかご側に設置した受電部と各停止階床側に設置した送電部とからなる電力供給装置を用い、エレベーター乗りかごが何れかの階床に停止している時に停止階床側からエレベーター乗りかご側に電力の給電を非接触で行なうエレベーター乗りかごの電力供給装置において、
上記送電部は、発振周波数が各階床毎に個別に設定される共に、
上記受電部は、上記送電部からの電力により上記エレベーター乗りかごが扉開閉可能エリアに到達しているかどうかを判別する位置検出手段と、発振周波数検出手段と、階床判定手段とを有するかご位置検出部を備え、
上記送電部と上記受電部間に、
上記発振周波数検出手段によって上記発振周波数を検出することにより上記エレベーター乗りかごの到達階床を判別し、且つ上記位置検出手段の判別動作に基づいて上記送電部から上記受電部への給電を行う給電制御手段を設け、
上記各階床の送電部には、上記エレベーター乗りかごの走行中、個別の低周波数で動作させると共に、上記エレベーター乗りかごが所定の階床に到達しこの階床の送電部が上記受電部と対峙した時、高周波数で動作させる周波数制御手段を設けたことを特徴とするエレベーター乗りかごの電力供給装置。 Using a power supply device consisting of a power receiving unit installed on the elevator car side and a power transmission unit installed on each stop floor side, the elevator from the stop floor side when the elevator car is stopped on any floor In an elevator car power supply device that supplies power to the car side in a contactless manner,
In the power transmission unit, the oscillation frequency is individually set for each floor,
The power receiving unit has a car position having position detecting means for determining whether or not the elevator car has reached the door opening / closing area by the electric power from the power transmitting part, oscillation frequency detecting means, and floor determining means. With a detector
Between the power transmission unit and the power reception unit,
Power supply for determining the arrival floor of the elevator car by detecting the oscillation frequency by the oscillation frequency detection means and supplying power from the power transmission unit to the power reception unit based on the determination operation of the position detection unit Providing control means,
The power transmission unit of each floor is operated at an individual low frequency while the elevator car is running, and the elevator car reaches a predetermined floor, and the power transmission unit of this floor faces the power receiving unit. A power supply device for an elevator car, which is provided with a frequency control means for operating at a high frequency when the elevator car is operated .
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JP7062399B2 (en) * 2017-10-16 2022-05-06 株式会社日立製作所 Contactless power supply elevator
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