JP2012143056A - Power supply device for elevator - Google Patents

Power supply device for elevator Download PDF

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JP2012143056A
JP2012143056A JP2010293121A JP2010293121A JP2012143056A JP 2012143056 A JP2012143056 A JP 2012143056A JP 2010293121 A JP2010293121 A JP 2010293121A JP 2010293121 A JP2010293121 A JP 2010293121A JP 2012143056 A JP2012143056 A JP 2012143056A
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power supply
phase
circuit
elevator
switch
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Masafumi Oshima
雅文 大島
Masakazu Kobayashi
雅和 小林
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Fuji Electric Co Ltd
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Fuji Electric Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B50/00Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies

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  • Stand-By Power Supply Arrangements (AREA)
  • Control Of Ac Motors In General (AREA)
  • Inverter Devices (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an elevator power supply capable of solving a problem in which, in a conventional circuit using a single unit storage battery in an elevator power supply provided with a backup function during an AC power supply power failure, there are many transducers through which electric power passes and a usage ratio of a storage battery is low.SOLUTION: During an AC power supply power failure, a power supply device for an elevator separates a motor driving inverter from the AC power supply, connects a storage battery, used for a backup power supply of a control system and so on, to an AC input of the motor driving inverter, and supplies electric power to an AC motor via a converter circuit and an inverter circuit.

Description

本発明は、エレベータシステムにおけるエレベータの電動機駆動用インバータを動かすための制御関連の電源、ブレーキ回路を駆動するための電源などを交流電源停電時一括でバックアップするためのエレベータ用電源装置に関する。   The present invention relates to an elevator power supply apparatus for backing up a control-related power source for driving an electric motor drive inverter of an elevator in an elevator system, a power source for driving a brake circuit, etc. at a time when an AC power supply is interrupted.

エレベータシステムにおいては、交流電源が停電した時、電動機駆動用インバータや、それを制御するシステムが停止してしまい、エレベータかごの中に人が閉じ込められてしまうのを回避するための対策が必要である。そこで、停電が発生した場合、エレベータを最寄りの階まで移動させるために、エレベータシステムを蓄電池を搭載した無停電電源装置(UPS)でバックアップすることで、閉じ込めを回避している。そのシステムとして特許文献1、特許文献2などがある。   In an elevator system, when the AC power supply fails, it is necessary to take measures to prevent the motor-driven inverter and the system that controls it from stopping and people being trapped in the elevator car. is there. Therefore, in the event of a power failure, in order to move the elevator to the nearest floor, the elevator system is backed up with an uninterruptible power supply (UPS) equipped with a storage battery to avoid confinement. Examples of such systems include Patent Document 1 and Patent Document 2.

特許文献1は、エレベータ用電動機を駆動するための蓄電池と、エレベータの制御回路用交流電源をバックアップするためのUPSに内蔵された蓄電池を用いた従来例である。
停電が発生すると、これを検知して、サイリスタスイッチを点弧して電動機駆動用インバータ回路の直流中間回路に蓄電池を接続する構成である。蓄電池を2ユニット用いるため、装置構成及び管理が複雑になる欠点がある。
Patent Document 1 is a conventional example using a storage battery for driving an elevator motor and a storage battery built in a UPS for backing up an AC power supply for an elevator control circuit.
When a power failure occurs, this is detected, the thyristor switch is fired, and the storage battery is connected to the DC intermediate circuit of the inverter circuit for driving the motor. Since two units of storage batteries are used, there is a drawback that the device configuration and management are complicated.

また、特許文献2は、エレベータ用電動機を駆動するための蓄電池を昇降圧チョッパ回路を用いて電動機駆動用インバータの直流中間回路に接続する構成である。この構成では、エレベータの大きさ(電動機容量)に合わせて昇降圧チョッパ回路を準備する必要があり、装置の共通化ができず高価格になるなどの問題がある。また蓄電池から昇降圧チョッパ回路とインバータ回路を介して電動機に電力を供給するので電力ロスが大きく蓄電池の電力を効率よく利用できない。   Patent Document 2 is a configuration in which a storage battery for driving an elevator motor is connected to a DC intermediate circuit of an electric motor drive inverter using a step-up / step-down chopper circuit. In this configuration, it is necessary to prepare a step-up / step-down chopper circuit in accordance with the size of the elevator (motor capacity), and there is a problem that the apparatus cannot be shared and the price is high. Further, since electric power is supplied from the storage battery to the electric motor via the step-up / down chopper circuit and the inverter circuit, the power loss is large and the electric power of the storage battery cannot be used efficiently.

図4に、特許文献1及び特許文献2を改良したシステムを示す。蓄電池BATを1ユニットだけ使用した構成である。
エレベータ駆動用電動機ACMを駆動するためのインバータ回路INVは、交流電圧を直流に変換するダイオード整流器D1、平滑用コンデンサC3、直流電圧を電動機駆動用交流電圧に変換するインバータT1、開閉器RY3と抵抗R1からなる起動時の突入電流抑制回路、コンデンサC3の電圧と交流入力をダイオード整流器D2で整流した電圧を並列接続するダイオードD3、D4、平滑用コンデンサC4、制御電源CPSなどで構成される。
FIG. 4 shows a system obtained by improving Patent Document 1 and Patent Document 2. In this configuration, only one unit of the storage battery BAT is used.
The inverter circuit INV for driving the elevator drive motor ACM includes a diode rectifier D1 that converts AC voltage into DC, a smoothing capacitor C3, an inverter T1 that converts DC voltage into AC drive voltage, a switch RY3, and a resistor An inrush current suppression circuit at the time of start-up composed of R1, a diode D3, D4, a smoothing capacitor C4, a control power supply CPS, and the like that connect in parallel a voltage obtained by rectifying the voltage of the capacitor C3 and an AC input by a diode rectifier D2.

また、停電時の電力を確保するためのバックアップ電源BUPは、蓄電池BATを直流入力として、開閉器RY1とRY2、昇降圧チョッパCHP、平滑コンデンサC1、ダイオードを逆並列したIGBTT11〜T14で構成された単相インバータ回路、リアクトルL1、L2及びコンデンサC2からなる交流フィルタなどで構成される。
交流入力と電動機駆動用インバータINVの交流入力との間には遮断器CBと開閉器51が、バックアップ電源BUPの出力と電動機駆動用インバータINVの交流入力との間には開閉器RY52が、各々接続される。また、バックアップ電源BUPの出力は制御システムCNT及び電動機駆動用インバータINVの制御電源用交流入力端子に、各々接続される。
The backup power supply BUP for securing power during a power failure is composed of IGBTs 11 to T14 in which the storage battery BAT is a DC input and the switches RY1 and RY2, the step-up / step-down chopper CHP, the smoothing capacitor C1, and the diodes are anti-parallel. A single-phase inverter circuit, an AC filter including reactors L1 and L2, and a capacitor C2 are used.
A circuit breaker CB and a switch 51 are provided between the AC input and the AC input of the motor drive inverter INV, and a switch RY52 is provided between the output of the backup power supply BUP and the AC input of the motor drive inverter INV. Connected. The output of the backup power source BUP is connected to the control system CNT and the control power supply AC input terminal of the motor drive inverter INV, respectively.

この様な構成において、交流電源が健全な場合は、開閉器RY51を閉、RY52を開、RY1を閉、RY2を閉とする。エレベータ用電動機を駆動する電動機駆動用インバータINVの電源は交流電源から直接供給され、エレベータを制御する制御システムCNTへは交流電源からバックアップ電源内の開閉器RY1を通して電源が供給される。この時、バックアップ電源のダイオードを逆並列したIGBTT11〜T14、コンデンサC1にて整流平滑された直流電圧から昇降圧チョッパ回路CHPにより蓄電池BATが充電される。   In such a configuration, when the AC power supply is healthy, the switch RY51 is closed, RY52 is opened, RY1 is closed, and RY2 is closed. The power source of the motor drive inverter INV that drives the elevator motor is directly supplied from the AC power source, and the control system CNT that controls the elevator is supplied with power from the AC power source through the switch RY1 in the backup power source. At this time, the storage battery BAT is charged by the step-up / step-down chopper circuit CHP from the DCT rectified and smoothed by the IGBTs T11 to T14 in which the diodes of the backup power supply are antiparallel, and the capacitor C1.

エレベータシステムが交流電源の異常を検出すると、RY51及びRY1を開とし、エレベータ用バックアップ電源BUPは、蓄電池BATから昇降圧チョッパCHPで蓄電池電圧を昇圧し、IGBTT11〜T14で構成されるインバータ回路を通してエレベータの制御システムCNTをバックアップする。次にエレベータを最寄り階まで運転する準備ができると開閉器RY52を閉とし、電動機駆動用インバータINVへ電力を供給し、最寄りの階まで移動運転する。   When the elevator system detects an abnormality in the AC power supply, RY51 and RY1 are opened, and the elevator backup power supply BUP boosts the storage battery voltage from the storage battery BAT by the step-up / step-down chopper CHP, and passes through the inverter circuit configured by IGBTTT11 to T14. The control system CNT is backed up. Next, when the elevator is ready to be operated to the nearest floor, the switch RY52 is closed, electric power is supplied to the motor drive inverter INV, and the elevator is moved to the nearest floor.

特開平1−174229号公報JP-A-1-174229 特開2005−192298号公報JP 2005-192298 A

上述のように、蓄電池を1ユニット使用したエレベータ用電源を実現できるが、このシステムでは、電力が通過する変換器の数が多くなる。即ち、蓄電池BATから昇降圧チョッパCHP、単相インバータ(T11〜T14で構成)、ダイオード整流回路D1及び電動機駆動用インバータT1を経由して、電動機ACMを駆動することになり、蓄電池の電力を効率よく利用することができない。また、特許文献と同じようにエレベータの規模に合わせた出力容量を持つバックアップ電源を準備する必要がある。
従って、本発明の課題は、蓄電池を1ユニットのみ使用し、電力が通過する変換回路の数が少なく、蓄電池電力を効率よく利用できるエレベータ用電源装置を提供することである。
As described above, an elevator power source using one unit of storage battery can be realized, but in this system, the number of converters through which power passes increases. That is, the electric motor ACM is driven from the storage battery BAT via the step-up / step-down chopper CHP, the single-phase inverter (configured by T11 to T14), the diode rectifier circuit D1, and the electric motor drive inverter T1, and the electric power of the storage battery is efficiently used. Cannot use well. Moreover, it is necessary to prepare a backup power source having an output capacity that matches the scale of the elevator as in the patent literature.
Accordingly, an object of the present invention is to provide an elevator power supply apparatus that uses only one unit of a storage battery, has a small number of conversion circuits through which power passes, and can efficiently use the storage battery power.

上述の課題を解決するために、第1の発明においては、三相交流電源を入力として、前記三相交流電源の交流を直流に変換するコンバータ回路と前記直流を三相交流に変換するインバータ回路とを有する電動機駆動用インバータと、蓄電池とこの蓄電池の直流電圧を単相交流出力電圧に変換又は単相交流電圧を直流に変換し前記蓄電池を充放電する単相電源回路と、を備えたエレベータ電源装置において、前記三相交流電源と前記コンバータ回路入力との間を開閉する第1の開閉器と、前記三相交流電源のいずれか2相と前記電源回路の単相交流出力との間を開閉する第2の開閉器と、前記蓄電池と前記コンバータ回路入力との間を開閉する第3の開閉器とを備え、前記三相交流電源が健全な時は、前記第1の開閉器を閉、前記第2の開閉器を閉、前記第3の開閉器を開とし、前記三相交流電源から、前記コンバータ回路と前記インバータ回路とを介して電動機に電力を供給し、前記三相交流電源が停電の時は、前記第1の開閉器を開、前記第2の開閉器を開、前記第3の開閉器を閉とし、前記蓄電池から前記コンバータ回路と前記インバータ回路とを介して電動機に電力を供給する。   In order to solve the above-described problem, in the first invention, a three-phase AC power supply is used as an input, and a converter circuit that converts AC of the three-phase AC power supply into DC and an inverter circuit that converts the DC into three-phase AC And a single-phase power supply circuit that converts the DC voltage of the storage battery into a single-phase AC output voltage or converts the single-phase AC voltage into DC and charges and discharges the storage battery. In the power supply apparatus, between the first switch for switching between the three-phase AC power supply and the converter circuit input, between any two phases of the three-phase AC power supply and the single-phase AC output of the power supply circuit A second switch that opens and closes, and a third switch that opens and closes between the storage battery and the converter circuit input, and closes the first switch when the three-phase AC power source is healthy. , The second switch The third switch is opened, and the electric power is supplied from the three-phase AC power source to the electric motor through the converter circuit and the inverter circuit. The switch is opened, the second switch is opened, the third switch is closed, and electric power is supplied from the storage battery to the motor through the converter circuit and the inverter circuit.

第2の発明においては、第1の発明における前記単相電源回路の単相交流出力の両方にリアクトルを備える。   In 2nd invention, a reactor is provided in both the single phase alternating current outputs of the said single phase power supply circuit in 1st invention.

第3の発明においては、第1の発明における前記単相電源回路の単相交流出力と前記単相電源回路の直流回路との間にダイオードを接続する。   In the third invention, a diode is connected between the single-phase AC output of the single-phase power supply circuit and the DC circuit of the single-phase power supply circuit in the first invention.

本発明では、交流電源が停電時は蓄電池BATを電動機駆動用インバータINVのコンバータ回路D1の交流入力に接続し、コンバータ回路D1とインバータ回路T1を介して電動機ACMに電力を供給している。この結果、電力が通過する変換回路の数が減少し、蓄電池電力を効率よく利用することが可能となる。   In the present invention, when the AC power supply is in a power failure, the storage battery BAT is connected to the AC input of the converter circuit D1 of the inverter INV for driving the motor, and power is supplied to the motor ACM via the converter circuit D1 and the inverter circuit T1. As a result, the number of conversion circuits through which the power passes is reduced, and the storage battery power can be used efficiently.

本発明の第1の実施例を示す回路図である。1 is a circuit diagram showing a first embodiment of the present invention. 図1の電流動作を示す動作図である。It is an operation | movement diagram which shows the electric current operation | movement of FIG. 本発明の第2の実施例を示す回路図である。It is a circuit diagram which shows the 2nd Example of this invention. 従来の実施例を示す回路図である。It is a circuit diagram which shows the conventional Example.

本発明の要点は、従来交流電源停電時に制御システムバックアップ用に使用していた蓄電池を、交流電源停電時は電動機駆動用インバータINVのコンバータ回路D1の交流入力にも接続し、コンバータ回路D1とインバータ回路T1を介して電動機ACMに電力を供給し、蓄電池1ユニットで電源装置を構成している点である。   The main point of the present invention is that a storage battery that has been used for backup of a control system in the case of an AC power supply interruption is also connected to the AC input of the converter circuit D1 of the motor drive inverter INV in the event of an AC power supply interruption. The electric power is supplied to the electric motor ACM through the circuit T1, and the power supply device is configured by one unit of the storage battery.

図1に、本発明の第1の実施例を示す。エレベータ駆動用電動機ACMを駆動するためのインバータ回路INVは、交流電圧を直流に変換するダイオードD11〜D16で構成したダイオード整流器、平滑用コンデンサC3、直流電圧を電動機駆動用交流電圧に変換するインバータT1、開閉器RY3と抵抗R1からなる起動時の突入電流抑制回路、コンデンサC3の電圧と交流入力をD21〜D24で構成したダイオード整流器で整流した電圧を並列接続するダイオードD3、D4、平滑用コンデンサC4、制御電源CPSなどで構成される。   FIG. 1 shows a first embodiment of the present invention. The inverter circuit INV for driving the elevator drive motor ACM includes a diode rectifier composed of diodes D11 to D16 that convert AC voltage into DC, a smoothing capacitor C3, and an inverter T1 that converts DC voltage into AC voltage for driving the motor. , An inrush current suppression circuit at start-up comprising a switch RY3 and a resistor R1, diodes D3 and D4 for connecting in parallel the voltage of the capacitor C3 and a voltage rectified by a diode rectifier comprising AC inputs D21 to D24, and a smoothing capacitor C4 And a control power source CPS.

また、停電時の電力を確保するためのバックアップ電源BUPは、蓄電池BATを直流入力として、開閉器RY1とRY2、昇降圧チョッパCHP、平滑コンデンサC1、ダイオードを逆並列したIGBTT11〜T14で構成された単相インバータ回路、リアクトルL1、L2及びコンデンサC2からなる交流フィルタなどで構成される。   The backup power supply BUP for securing power during a power failure is composed of IGBTs 11 to T14 in which the storage battery BAT is a DC input and the switches RY1 and RY2, the step-up / step-down chopper CHP, the smoothing capacitor C1, and the diodes are anti-parallel. A single-phase inverter circuit, an AC filter including reactors L1 and L2, and a capacitor C2 are used.

図示されていない交流電源に接続される装置の交流入力(R、S、T)と電動機駆動用インバータINVの交流入力との間には遮断器CBと開閉器51が、バックアップ電源BUPの出力と装置の交流入力との間には開閉器RY1が、蓄電池BATと電動機駆動用インバータINVの交流入力との間には開閉器RY53が、各々接続される。また、バックアップ電源BUPの出力は制御システムCNT及び電動機駆動用インバータINVの制御電源用交流入力端子に、各々接続される。   A circuit breaker CB and a switch 51 are connected between the AC input (R, S, T) of a device connected to an AC power source (not shown) and the AC input of the motor drive inverter INV, and the output of the backup power source BUP. A switch RY1 is connected between the AC input of the device and a switch RY53 is connected between the storage battery BAT and the AC input of the motor driving inverter INV. The output of the backup power source BUP is connected to the control system CNT and the control power supply AC input terminal of the motor drive inverter INV, respectively.

この様な構成において、交流電源が健全な場合は、開閉器RY51を閉、RY53を開、RY1を閉、RY2を閉とする。エレベータ用電動機を駆動する電動機駆動用インバータINVの電源は交流電源から供給され、エレベータを制御する制御システムCNTへは交流電源からバックアップ電源内の開閉器RY1を通して電源が供給される。この時、バックアップ電源内部のダイオードを逆並列したIGBTT11〜T14及びコンデンサC1にて整流平滑された直流電圧から昇降圧チョッパ回路CHPにより、開閉器RY2を介して蓄電池BATが充電される。   In such a configuration, when the AC power supply is healthy, the switch RY51 is closed, RY53 is opened, RY1 is closed, and RY2 is closed. The power source for the motor drive inverter INV that drives the elevator motor is supplied from an AC power source, and the control system CNT that controls the elevator is supplied with power from the AC power source through a switch RY1 in the backup power source. At this time, the storage battery BAT is charged via the switch RY2 by the step-up / step-down chopper circuit CHP from the DCT rectified and smoothed by the IGBTs T11 to T14 in which the diodes in the backup power supply are anti-parallel and the capacitor C1.

エレベータシステムが交流電源の異常を検出すると、RY51及びRY1を開とし、エレベータ用バックアップ電源BUPは、蓄電池BATから昇降圧チョッパCHPで蓄電池電圧を昇圧し、IGBTT11〜T14で構成される単相インバータ回路を通してエレベータの制御システムCNT及び電動機駆動用インバータINVの制御電源をバックアップする。次にエレベータを最寄り階まで運転する準備ができるとRY53を閉とし、電動機駆動用インバータINVへ電力を供給し、最寄りの階まで移動運転する。   When the elevator system detects an abnormality in the AC power supply, RY51 and RY1 are opened, and the elevator backup power supply BUP boosts the storage battery voltage from the storage battery BAT by the step-up / step-down chopper CHP, and is a single-phase inverter circuit composed of IGBTTT11 to T14 The control power source of the elevator control system CNT and the motor drive inverter INV is backed up. Next, when it is ready to drive the elevator to the nearest floor, RY53 is closed, electric power is supplied to the motor drive inverter INV, and the elevator is moved to the nearest floor.

この様な構成におけるIGBT11〜14で構成された単相インバータ回路の交流フィルタとして、L1、L2及びコンデンサC2から構成されるフィルタ回路を用いる必要性を説明する。交流電源停電時は、蓄電池BATの電圧を昇圧チョッパCHPで昇圧するが、この電圧は電動機駆動用インバータINVの制御電源CPSへ供給する直流電圧となるコンデンサC4の電圧より高い電圧となる。このため、単相インバータ回路のIGBTT13がオンすると、図2に示すように、電流はコンデンサC1→IGBTT13→リアクトルL2→ダイオードD21→コンデンサC4→ダイオードD4→ダイオードD16→開閉器53→昇降圧チョッパCHP→コンデンサC1の経路となる。また、単相インバータ回路のIGBTT11がオンすると、電流はコンデンサC1→IGBTT11→リアクトルL1→ダイオードD23→コンデンサC4→ダイオードD4→ダイオードD16→開閉器53→昇降圧チョッパCHP→コンデンサC1の経路となる。   The necessity of using a filter circuit composed of L1, L2 and a capacitor C2 as an AC filter of a single-phase inverter circuit composed of IGBTs 11 to 14 having such a configuration will be described. At the time of AC power failure, the voltage of the storage battery BAT is boosted by the boost chopper CHP, and this voltage is higher than the voltage of the capacitor C4 which is a DC voltage supplied to the control power source CPS of the motor drive inverter INV. Therefore, when the IGBTTT13 of the single-phase inverter circuit is turned on, as shown in FIG. 2, the current flows from the capacitor C1 → IGBTTT13 → reactor L2 → diode D21 → capacitor C4 → diode D4 → diode D16 → switch 53 → step-up / down chopper CHP. → This is the path of the capacitor C1. When the IGBTTT11 of the single-phase inverter circuit is turned on, the current becomes a path of the capacitor C1 → IGBTTT11 → reactor L1 → diode D23 → capacitor C4 → diode D4 → diode D16 → switch 53 → step-up / step-down chopper CHP → capacitor C1.

従って、これらの経路にはコンデンサC1の電圧とコンデンC4の電圧差で流れる電流を抑制するためのインピーダンスが必要となり、一般的なリアクトル1個とコンデンサ1個で構成する交流フィルタではなく、各出力に設けるリアクトル2個(L1、L2)とコンデンサ1個(C2)で構成する交流フィルタを用いる。 Therefore, impedances for suppressing the current flowing due to the voltage difference between the voltage of the capacitor C1 and the capacitor C4 are required in these paths, and each output is not an AC filter composed of one general reactor and one capacitor. An AC filter composed of two reactors (L1 and L2) and one capacitor (C2) provided in FIG.

図3に、本発明の第2の実施例を示す。第1の実施例との違いは、バックアップ電源BUPのIGBTT11〜T14で構成された単相インバータ回路の出力に接続されたリアクトルL1、L2とコンデンサC2との各接続点と単相インバータ回路の直流ライン(P、N)との間にダイオードが接続されている点である。即ち、リアクトルL1とコンデンサC2との接続点とPラインとの間にはダイオードD5が、リアクトルL1とコンデンサC2との接続点とNラインとの間にはダイオードD6が、リアクトルL2とコンデンサC2との接続点とPラインとの間にはダイオードD7が、リアクトルL2とコンデンサC2との接続点とNラインとの間にはダイオードD8が、各々接続される。   FIG. 3 shows a second embodiment of the present invention. The difference from the first embodiment is that each connection point of the reactors L1, L2 and the capacitor C2 connected to the output of the single-phase inverter circuit composed of IGBTTT11 to T14 of the backup power supply BUP and the direct current of the single-phase inverter circuit A diode is connected to the line (P, N). That is, the diode D5 is connected between the connection point between the reactor L1 and the capacitor C2 and the P line, the diode D6 is connected between the connection point between the reactor L1 and the capacitor C2 and the N line, and the reactor L2 and the capacitor C2. A diode D7 is connected between the connection point and the P line, and a diode D8 is connected between the connection point between the reactor L2 and the capacitor C2 and the N line.

この様に構成することにより、リアクトルに過電流が流れた場合でもコンデンサ2のピーク電圧を直流ラインの電圧でクランプすることが可能となり、電動機駆動用インバータINVの制御電源CPSへ供給する直流電圧となるコンデンサC4や制御システムCNTに過電圧が印加されるのを抑制できる。ここでは、4個のダイオードD5〜D8を接続した例を示したが、単相インバータ回路の構成の違いや制御方式の違いにより、必ずしも4個用いる必要はない。 With this configuration, even when an overcurrent flows through the reactor, the peak voltage of the capacitor 2 can be clamped with the voltage of the DC line, and the DC voltage supplied to the control power source CPS of the motor drive inverter INV It is possible to suppress the overvoltage from being applied to the capacitor C4 and the control system CNT. Here, an example in which four diodes D5 to D8 are connected is shown, but it is not always necessary to use four diodes due to a difference in the configuration of a single-phase inverter circuit and a difference in control method.

本発明は、エレベータ用電源に限らず、交流電源が停電した時にバックアップが必要な非常用ドア開閉装置、クレーン巻上装置などへの適用が可能である。   The present invention is not limited to an elevator power supply, and can be applied to an emergency door opening / closing device, a crane hoisting device, and the like that need to be backed up when an AC power supply fails.

CB・・・遮断器 ACM・・・交流電動機 BAT・・・蓄電池
RY1、RY2、RY3、RY51、RY52、RY53・・・開閉器
D1・・・コンバータ回路 T1・・・インバータ回路
INV・・・電動機駆動用インバータ D2・・・ダイオード整流器
R1・・・抵抗 CPS・・・制御電源 CNT・・・制御システム
BUP・・・バックアップ電源 CHP・・・昇降圧チョッパ
C1〜C4・・・コンデンサ T11〜T14・・・IGBT
D3〜D8、D11〜D16、D21〜D24・・・ダイオード
CB: Circuit breaker ACM: AC motor BAT: Storage batteries RY1, RY2, RY3, RY51, RY52, RY53: Switch D1: Converter circuit T1: Inverter circuit INV: Electric motor Drive inverter D2 ... Diode rectifier R1 ... Resistance CPS ... Control power supply CNT ... Control system BUP ... Backup power supply CHP ... Buck-boost chopper C1-C4 ... Capacitors T11-T14 ..IGBT
D3-D8, D11-D16, D21-D24 ... Diodes

Claims (3)

三相交流電源を入力として、前記三相交流電源の交流を直流に変換するコンバータ回路と前記直流を三相交流に変換するインバータ回路とを有する電動機駆動用インバータと、蓄電池とこの蓄電池の直流電圧を単相交流出力電圧に変換又は単相交流電圧を直流に変換し前記蓄電池を充放電する単相電源回路と、を備えたエレベータ電源装置において、
前記三相交流電源と前記コンバータ回路入力との間を開閉する第1の開閉器と、前記三相交流電源のいずれか2相と前記電源回路の単相交流出力との間を開閉する第2の開閉器と、前記蓄電池と前記コンバータ回路入力との間を開閉する第3の開閉器とを備え、
前記三相交流電源が健全な時は、前記第1の開閉器を閉、前記第2の開閉器を閉、前記第3の開閉器を開とし、前記三相交流電源から、前記コンバータ回路と前記インバータ回路とを介して電動機に電力を供給し、
前記三相交流電源が停電の時は、前記第1の開閉器を開、前記第2の開閉器を開、前記第3の開閉器を閉とし、前記蓄電池から前記コンバータ回路と前記インバータ回路とを介して電動機に電力を供給することを特徴とするエレベータ用電源装置。
An inverter for driving an electric motor having a converter circuit for converting alternating current of the three-phase alternating current power supply into direct current and an inverter circuit for converting the direct current into three-phase alternating current, with a three-phase alternating current power supply as an input, a storage battery, and a direct current voltage of the storage battery In an elevator power supply device comprising: a single-phase AC output voltage or a single-phase power supply circuit that converts a single-phase AC voltage to DC and charges and discharges the storage battery,
A first switch that opens and closes between the three-phase AC power supply and the converter circuit input; and a second switch that opens and closes between any two phases of the three-phase AC power supply and the single-phase AC output of the power supply circuit. And a third switch for switching between the storage battery and the converter circuit input,
When the three-phase AC power source is healthy, the first switch is closed, the second switch is closed, the third switch is opened, and the converter circuit is connected to the three-phase AC power source. Supplying electric power to the motor through the inverter circuit;
When the three-phase AC power supply is out of power, the first switch is opened, the second switch is opened, the third switch is closed, and the converter circuit, the inverter circuit, A power supply device for an elevator which supplies electric power to an electric motor via a motor.
前記単相電源回路の単相交流出力の両方にリアクトルを備えることを特徴とする請求項1に記載のエレベータ用電源装置。   The elevator power supply device according to claim 1, wherein reactors are provided for both of the single-phase AC outputs of the single-phase power supply circuit. 前記単相電源回路の単相交流出力と前記単相電源回路の直流回路との間にダイオードを接続することを特徴とする請求項1に記載のエレベータ用電源装置。   2. The elevator power supply apparatus according to claim 1, wherein a diode is connected between a single-phase AC output of the single-phase power supply circuit and a DC circuit of the single-phase power supply circuit.
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CN103560684A (en) * 2013-10-27 2014-02-05 李诚德 Energy-saving electronic battery
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CN106385095A (en) * 2016-08-30 2017-02-08 成都英格瑞德电气有限公司 Module applicable to energy storage power generation scheme of elevator
JP2017063569A (en) * 2015-09-25 2017-03-30 住友電気工業株式会社 Bidirectional power converter
JP2017075612A (en) * 2013-01-17 2017-04-20 株式会社荏原製作所 Fluid feeding device
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CN112242807A (en) * 2020-09-02 2021-01-19 深圳通业科技股份有限公司 Motor drive control circuit and motor drive control method
WO2023123793A1 (en) * 2021-12-30 2023-07-06 苏州汇川控制技术有限公司 Elevator controller and elevator
CN116534692A (en) * 2023-07-06 2023-08-04 通用电梯股份有限公司 Elevator power failure emergency leveling system and control method thereof

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Cited By (12)

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Publication number Priority date Publication date Assignee Title
JP2017075612A (en) * 2013-01-17 2017-04-20 株式会社荏原製作所 Fluid feeding device
CN103434907A (en) * 2013-08-22 2013-12-11 天津豪雅科技发展有限公司 Power supply open-phase protection device of elevator control cabinet
CN103560684A (en) * 2013-10-27 2014-02-05 李诚德 Energy-saving electronic battery
CN104355195A (en) * 2014-10-27 2015-02-18 中山市卓梅尼控制技术有限公司 Safe torque off circuit and elevator safety control system
JP2017063569A (en) * 2015-09-25 2017-03-30 住友電気工業株式会社 Bidirectional power converter
CN106385095A (en) * 2016-08-30 2017-02-08 成都英格瑞德电气有限公司 Module applicable to energy storage power generation scheme of elevator
JP2018164372A (en) * 2017-03-27 2018-10-18 ファナック株式会社 Power supply controller and power supply control method
JP2020179957A (en) * 2019-04-24 2020-11-05 フジテック株式会社 Passenger conveyor
CN112242807A (en) * 2020-09-02 2021-01-19 深圳通业科技股份有限公司 Motor drive control circuit and motor drive control method
WO2023123793A1 (en) * 2021-12-30 2023-07-06 苏州汇川控制技术有限公司 Elevator controller and elevator
CN116534692A (en) * 2023-07-06 2023-08-04 通用电梯股份有限公司 Elevator power failure emergency leveling system and control method thereof
CN116534692B (en) * 2023-07-06 2023-09-26 通用电梯股份有限公司 Elevator power failure emergency leveling system and control method thereof

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