JP2011032055A - Power supply switching control device for elevator - Google Patents

Power supply switching control device for elevator Download PDF

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JP2011032055A
JP2011032055A JP2009180676A JP2009180676A JP2011032055A JP 2011032055 A JP2011032055 A JP 2011032055A JP 2009180676 A JP2009180676 A JP 2009180676A JP 2009180676 A JP2009180676 A JP 2009180676A JP 2011032055 A JP2011032055 A JP 2011032055A
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power supply
main contact
energized
emergency
converter
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JP5232099B2 (en
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Tomoji Sakota
友治 迫田
Koichi Sato
康一 佐藤
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Hitachi Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply switching control device for an elevator, integrating circuits for switching a commercial AC power supply into an emergency DC power supply and circuits for performing starting control. <P>SOLUTION: The power supply switching control device for the elevator includes a converter 14 for converting the commercial AC power supply 10 into DC one, a capacitor 15, an inverter 17, a driving motor 18, a first switching circuit having a series circuit between a main contact 11 adapted to be energized during the operation of the elevator, and a sub contact 12 adapted to be energized right before a smoothing capacitor charging resistance 13 and the main contact are energized, and a second switching circuit having a series circuit between a main contact 21 inserted between the emergency DC power supply 20 and the converter and adapted to be energized during the emergency operation of the elevator and a sub contact 22 adapted to be energized right before a smoothing capacitor charging resistance 23 connected in parallel to the main contact and the emergency main contact is energized. During a failure of the commercial power supply, power is supplied to the converter via the second switching circuit connected to the emergency DC power supply. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、エレベータの電源切り替え制御装置に係り、特に、商用交流電源と非常用直流電源とを切り替えるエレベータの電源切り替え制御装置に関する。   The present invention relates to an elevator power switching control device, and more particularly to an elevator power switching control device that switches between a commercial AC power source and an emergency DC power source.

従来、エレベータに電力を供給する商用電源が停電したとき、非常用電源としての蓄電池等をエレベータに接続して運転する電源切り替え回路が知られている（特許文献１参照）。   2. Description of the Related Art Conventionally, there is known a power supply switching circuit that operates by connecting a storage battery or the like as an emergency power supply to an elevator when a commercial power supply that supplies power to the elevator fails.

図３は、商用電源停電時における、従来のエレベータの電源切り替え制御回路を説明する図である。   FIG. 3 is a diagram for explaining a conventional elevator power switching control circuit during a commercial power failure.

図３において、商用電源１０が正常時には、励磁コイル１１ａを励磁して商用電源用主接点１１を閉路し、非常電源用主接点２１は開路している。エレベータ用電動機１８の起動に際しては、運転用主接点３１の閉路に先立って励磁コイル３２ａを励磁して副接点３２を閉路する。これにより商用電源１０は、商用電源用主接点１１、駆動用主接点３１に並列接続した副接点３２、および充電抵抗３３を介して平滑コンデンサ１５を初期充電する。   In FIG. 3, when the commercial power supply 10 is normal, the exciting coil 11a is excited to close the commercial power main contact 11 and the emergency power main contact 21 is opened. When the elevator motor 18 is started, the sub-contact 32 is closed by exciting the excitation coil 32a prior to closing the operation main contact 31. As a result, the commercial power supply 10 initially charges the smoothing capacitor 15 via the commercial power main contact 11, the sub-contact 32 connected in parallel to the drive main contact 31, and the charging resistor 33.

平滑コンデンサ１５の充電が進み、直流電圧検出器１６の出力が所定値をを示すと、制御回路４０は励磁コイル３１ａを励磁し、主接点３１を閉路する。   When charging of the smoothing capacitor 15 proceeds and the output of the DC voltage detector 16 shows a predetermined value, the control circuit 40 excites the exciting coil 31a and closes the main contact 31.

また、商用電源１０が停電した場合には、励磁コイル２１ａを励磁して非常電源用主接点２１を閉路し、商用電源用主接点１１を開路する。このとき、非常用直流電源２０は、主接点２１、主接点３１に並列接続した副接点３２、充電抵抗３３を介して平滑コンデンサ１５を初期充電する。   Further, when the commercial power supply 10 fails, the exciting coil 21a is excited to close the emergency power main contact 21 and the commercial power main contact 11 is opened. At this time, the emergency DC power supply 20 initially charges the smoothing capacitor 15 via the main contact 21, the sub-contact 32 connected in parallel to the main contact 31, and the charging resistor 33.

平滑コンデンサ１５の充電が進み、直流電圧検出器１６の出力が所定値をを示すと、制御回路４０は主接点３１の励磁コイル３１ａを励磁し、主接点３１を閉路する。   When charging of the smoothing capacitor 15 proceeds and the output of the DC voltage detector 16 shows a predetermined value, the control circuit 40 excites the excitation coil 31a of the main contact 31 and closes the main contact 31.

特開２００２−１３７８７５号公報JP 2002-137875 A

従来の技術においては、エレベータの電源の切り替えに関する制御、すなわち商用電源用主接点１１と非常用電源用主接点２１の切り替え制御と、運転の為の制御すなわち運転用主接点３１の制御はそれぞれ独立して作用している。このため、商用電源と非常用電源とを切り替える商用電源用主接点および非常電源用主接点、および運転用主接点３１をそれぞれ用意する必要がある。   In the prior art, control relating to switching of the elevator power supply, that is, switching control of the main contact 11 for commercial power supply and the main contact 21 for emergency power supply, and control for operation, that is, control of the main contact 31 for operation are independent of each other. It is acting. For this reason, it is necessary to prepare a main contact for commercial power supply, a main contact for emergency power supply, and a main contact for operation 31 for switching between a commercial power supply and an emergency power supply.

本発明はこれらの問題点に鑑みてなされたもので、商用交流電源と非常用直流電源とを切り替える回路、および運転制御のための回路を統合したエレベータの電源切り替え制御装置を提供する。   The present invention has been made in view of these problems, and provides a power source switching control device for an elevator that integrates a circuit for switching between a commercial AC power source and an emergency DC power source, and a circuit for operation control.

本発明は上記課題を解決するため、次のような手段を採用した。   In order to solve the above problems, the present invention employs the following means.

商用交流電源を直流に変換するコンバータと、該コンバータ出力を平滑するコンデンサと、平滑された直流を交流に変換するインバータと、該インバータの出力である交流で駆動されるエレベータ駆動用電動機と、
前記商用交流電源と前記コンバータ間に挿入され、エレベータが運転中に付勢される主接点、および前記主接点と並列に接続された、平滑コンデンサ充電用抵抗と前記主接点が付勢される直前に付勢される副接点との直列回路を備えた第１のスイッチ回路と、
非常用直流電源と前記コンバータ間に挿入され、エレベータが非常運転中に付勢される主接点、および該主接点と並列に接続された、平滑コンデンサ充電用抵抗と前記非常用主接点が付勢される直前に付勢される副接点との直列回路を備えた第２のスイッチ回路を備え、
商用電源停電時には非常用直流電源に接続された前記第２のスイッチ回路を介して前記コンバータに給電を行う。 A converter for converting commercial AC power into DC, a capacitor for smoothing the converter output, an inverter for converting the smoothed DC to AC, an elevator driving motor driven by the AC output from the inverter,
A main contact inserted between the commercial AC power supply and the converter and energized during operation of the elevator, and a smoothing capacitor charging resistor connected in parallel with the main contact and immediately before the main contact is energized A first switch circuit comprising a series circuit with a secondary contact energized by
A main contact inserted between an emergency DC power supply and the converter and energized during emergency operation, and a smoothing capacitor charging resistor and the emergency main contact connected in parallel with the main contact are energized. A second switch circuit comprising a series circuit with a secondary contact energized immediately before
In the event of a commercial power failure, power is supplied to the converter via the second switch circuit connected to the emergency DC power supply.

本発明は、以上の構成を備えるため、商用交流電源と非常用直流電源とを切り替える回路、および運転制御のための回路を統合したエレベータの電源切り替え制御装置を提供することができる。   Since the present invention has the above configuration, it is possible to provide a power source switching control device for an elevator that integrates a circuit for switching between a commercial AC power source and an emergency DC power source, and a circuit for operation control.

第１の実施形態にかかるエレベータの電源切り替え制御回路を説明する図である。It is a figure explaining the power supply switching control circuit of the elevator concerning 1st Embodiment. 第２の実施形態にかかるエレベータの電源切り替え制御回路を説明する図である。It is a figure explaining the power supply switching control circuit of the elevator concerning 2nd Embodiment. 従来のエレベータの電源切り替え制御回路を説明する図である。It is a figure explaining the power supply switching control circuit of the conventional elevator.

以下、本発明の実施形態を添付図面を参照しながら説明する。図１は本発明の第１の実施形態を説明する図である。   Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a diagram for explaining a first embodiment of the present invention.

図１において、商用電源１０が正常時においては、制御回路４０は、運転開始指令により副接触器励磁コイル１２ａを励磁し、副接点１２を閉路する。商用電源１０は、副接点１２、充電抵抗１３およびコンバータ１４を介して平滑コンデンサ１５を初期充電する。   In FIG. 1, when the commercial power supply 10 is normal, the control circuit 40 excites the sub-contactor excitation coil 12 a according to the operation start command and closes the sub-contact 12. The commercial power supply 10 initially charges the smoothing capacitor 15 via the sub-contact 12, the charging resistor 13 and the converter 14.

平滑コンデンサ１５の充電が進み、直流電圧検出器１６の出力が所定値を示すと、制御回路４０は、主接触器励磁コイル１１ａを励磁して、商用電源用主接点１１を閉路する。この後、コンバータ１４、およびインバータ１７に駆動信号を供給すると、電動機１８を回転駆動して乗りかごを上昇または下降方向に駆動することができる。   When charging of the smoothing capacitor 15 proceeds and the output of the DC voltage detector 16 shows a predetermined value, the control circuit 40 excites the main contactor excitation coil 11a and closes the commercial power source main contact 11. Thereafter, when a drive signal is supplied to the converter 14 and the inverter 17, the electric motor 18 can be rotationally driven to drive the car in the upward or downward direction.

一方、商用電源の停電時には、副接触器励磁コイル２２ａを励磁し、非常用電源用主接点２２と並列に配置した副接点２２を閉路する。これにより、非常用電源２０は、副接点２２、充電抵抗２３およびコンバータ１４を介して平滑コンデンサ１５を充電する。平滑コンデンサ１５の充電が進み、直流電圧検出器１６の出力が所定の値を示すと、制御回路４０は、主接触器励磁コイル２１ａを励磁して、主接点２１を閉路する。この後、コンバータ１４、およびインバータ１７に駆動信号を供給すると、電動機１８を回転駆動して乗りかごを上昇または下降方向に駆動することができる。   On the other hand, at the time of a power failure of the commercial power supply, the sub-contactor excitation coil 22a is excited and the sub-contact 22 arranged in parallel with the emergency power main contact 22 is closed. As a result, the emergency power source 20 charges the smoothing capacitor 15 via the sub-contact 22, the charging resistor 23 and the converter 14. When charging of the smoothing capacitor 15 proceeds and the output of the DC voltage detector 16 shows a predetermined value, the control circuit 40 excites the main contactor excitation coil 21a and closes the main contact 21. Thereafter, when a drive signal is supplied to the converter 14 and the inverter 17, the electric motor 18 can be rotationally driven to drive the car in the upward or downward direction.

図２は本発明の第２の実施形態を説明する図である。本実施形態は、第１の実施形態における充電抵抗１３および２３を共用するものである。   FIG. 2 is a diagram for explaining a second embodiment of the present invention. In this embodiment, the charging resistors 13 and 23 in the first embodiment are shared.

図２において、商用電源１０が正常時においては、制御回路４０は、運転開始指令により副接触器励磁コイル１２ａを励磁し、副接点１２を閉路する。商用電源１０は、副接点１２、充電抵抗１３およびコンバータ１４を介して平滑コンデンサ１５を初期充電する。   In FIG. 2, when the commercial power supply 10 is normal, the control circuit 40 excites the sub-contactor excitation coil 12 a according to the operation start command and closes the sub-contact 12. The commercial power supply 10 initially charges the smoothing capacitor 15 via the sub-contact 12, the charging resistor 13 and the converter 14.

平滑コンデンサ１５の充電が進み、直流電圧検出器１６の出力が所定値を示すと、制御回路４０は、主接触器励磁コイル１１ａを励磁して、接点１１を閉路する。この後、コンバータ１４、およびインバータ１７に制御信号を供給すると、電動機１８を回転駆動して乗りかごを上昇または下降方向に駆動することができる。   When charging of the smoothing capacitor 15 proceeds and the output of the DC voltage detector 16 shows a predetermined value, the control circuit 40 excites the main contactor excitation coil 11a and closes the contact 11. Thereafter, when a control signal is supplied to the converter 14 and the inverter 17, the electric motor 18 can be rotationally driven to drive the car in the upward or downward direction.

一方、商用電源の停電時には、副接触器励磁コイル２２ａを励磁し、非常用電源２０と充電抵抗１３を接続する副接点２２を閉路する。これにより、非常用電源２０は、副接点２２、充電抵抗１３およびコンバータ１４を介して平滑コンデンサ１５を充電する。平滑コンデンサ１５の充電が進み、直流電圧検出器１６の出力が所定の値を示すと、制御回路４０は、主接触器励磁コイル２１ａを励磁して、主接点２１を閉路する。この後、コンバータ１４、およびインバータ１７に制御信号を供給すると、電動機１８を回転駆動して乗りかごを上昇または下降方向に駆動することができる。   On the other hand, at the time of a power failure of the commercial power supply, the secondary contactor excitation coil 22a is excited, and the secondary contact 22 connecting the emergency power supply 20 and the charging resistor 13 is closed. As a result, the emergency power supply 20 charges the smoothing capacitor 15 via the sub-contact 22, the charging resistor 13 and the converter 14. When charging of the smoothing capacitor 15 proceeds and the output of the DC voltage detector 16 shows a predetermined value, the control circuit 40 excites the main contactor excitation coil 21a and closes the main contact 21. Thereafter, when a control signal is supplied to the converter 14 and the inverter 17, the electric motor 18 can be rotationally driven to drive the car in the upward or downward direction.

なお、コンバータ１４およびインバータ１７はそれぞれインバータおよびコンバータとして使用することが可能であり、この場合は電動機１８の電力を電源に回生することがかのである。   The converter 14 and the inverter 17 can be used as an inverter and a converter, respectively. In this case, the electric power of the electric motor 18 is regenerated as a power source.

以上説明したように、本実施形態によれば、商用電源と非常用電源とを切り替えるための回路と運転制御のための回路を統合するので、接点の統合を図り、回路構成を簡略化することができる。   As described above, according to the present embodiment, the circuit for switching between the commercial power supply and the emergency power supply and the circuit for operation control are integrated, so that the contacts can be integrated and the circuit configuration can be simplified. Can do.

１０ 商用電源
１１ 商用電源用主接点
１２ 副接点
１１ａ，１２ａ，２１ａ，２２ａ 電磁接触器励磁コイル
１３，２３ 充電抵抗
１４ コンバータ
１５ 平滑コンデンサ
１６ 直流電圧検出器
１７ インバータ
１８ 電動機
２０ 非常用電源
２１ 非常電源用主接点
２２ 副接点
４０ 制御回路 DESCRIPTION OF SYMBOLS 10 Commercial power supply 11 Main contact 12 for commercial power supplies Subcontact 11a, 12a, 21a, 22a Magnetic contactor exciting coil 13, 23 Charging resistor 14 Converter 15 Smoothing capacitor 16 DC voltage detector 17 Inverter 18 Electric motor 20 Emergency power supply 21 Emergency power supply Main contact 22 Sub contact
40 Control circuit

Claims (2)

商用交流電源を直流に変換するコンバータと、該コンバータ出力を平滑するコンデンサと、平滑された直流を交流に変換するインバータと、該インバータの出力である交流で駆動されるエレベータ駆動用電動機と、
前記商用交流電源と前記コンバータ間に挿入され、エレベータが運転中に付勢される主接点、および前記主接点と並列に接続された、平滑コンデンサ充電用抵抗と前記主接点が付勢される直前に付勢される副接点との直列回路を備えた第１のスイッチ回路と、
非常用直流電源と前記コンバータ間に挿入され、エレベータが非常運転中に付勢される主接点、および該主接点と並列に接続された、平滑コンデンサ充電用抵抗と前記非常用主接点が付勢される直前に付勢される副接点との直列回路を備えた第２のスイッチ回路を備え、
商用電源停電時には非常用直流電源に接続された前記第２のスイッチ回路を介して前記コンバータに給電を行うことを特徴とするエレベータの電源切り替え制御装置。 A converter for converting commercial AC power into DC, a capacitor for smoothing the converter output, an inverter for converting the smoothed DC to AC, an elevator driving motor driven by the AC output from the inverter,
A main contact inserted between the commercial AC power supply and the converter and energized during operation of the elevator, and a smoothing capacitor charging resistor connected in parallel with the main contact and immediately before the main contact is energized A first switch circuit comprising a series circuit with a secondary contact energized by
A main contact inserted between an emergency DC power supply and the converter and energized during emergency operation, and a smoothing capacitor charging resistor and the emergency main contact connected in parallel with the main contact are energized. A second switch circuit comprising a series circuit with a secondary contact energized immediately before
An elevator power switching control device that feeds power to the converter via the second switch circuit connected to an emergency DC power supply in the event of a commercial power failure. 商用交流電源を直流に変換するコンバータと、該コンバータ出力を平滑するコンデンサと、平滑された直流を交流に変換するインバータと、該インバータの出力である交流で駆動されるエレベータ駆動用電動機と、
前記商用交流電源と前記コンバータ間に挿入され、エレベータが運転中に付勢される商用電源用主接点、および前記主接点と並列に接続した平滑コンデンサ充電用抵抗と前記主接点が付勢される直前に付勢される副接点との直列回路を備えた第１のスイッチ回路と、
非常用直流電源と前記コンバータ間を開閉するとともにエレベータが非常運転中に付勢される非常電源用主接点、およびその一方端が前記非常用電源に接続され、その他方端が前記コンデンサ充電用抵抗に接続されるともに前記非常用主接点が付勢される直前に付勢される副接点を具備した第２のスイッチ回路とを備え、
前記商用電源停電時には、前記非常用主接点が付勢される直前に付勢される副接点の他方端および商用電源用主接点に並列に接続される平滑コンデンサ充電用抵抗を介して平滑コンデンサを充電することを特徴とするエレベータの電源切り替え制御装置。 A converter for converting commercial AC power into DC, a capacitor for smoothing the converter output, an inverter for converting the smoothed DC to AC, an elevator driving motor driven by the AC output from the inverter,
The main contact for commercial power supply inserted between the commercial AC power source and the converter and energized during operation of the elevator, and the smoothing capacitor charging resistor connected in parallel with the main contact and the main contact are energized. A first switch circuit comprising a series circuit with a subcontact energized immediately before;
A main contact for emergency power supply that opens and closes between the emergency DC power supply and the converter and is energized during emergency operation, and one end thereof is connected to the emergency power supply, and the other end is connected to the capacitor charging resistor. And a second switch circuit having a sub-contact that is energized immediately before the emergency main contact is energized,
At the time of the commercial power failure, the smoothing capacitor is connected via the other end of the sub-contact energized immediately before the emergency main contact is energized and the smoothing capacitor charging resistor connected in parallel to the main contact for commercial power. An elevator power switching control device characterized by charging.
JP2009180676A 2009-08-03 2009-08-03 Elevator power switching control device Active JP5232099B2 (en)

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JP2009180676A JP5232099B2 (en) 2009-08-03 2009-08-03 Elevator power switching control device
CN 201010243952 CN101987709B (en) 2009-08-03 2010-07-30 Power switch control device of elevator
HK11105967.5A HK1151780A1 (en) 2009-08-03 2011-06-14 Power supply switching control device for elevator

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