Operation device for an elevator system

• US 7,775,328 B2
• Filed: 01/13/2005
• Issued: 08/17/2010
• Est. Priority Date: 01/13/2005
• Status: Expired due to Fees

• Current Assignee: Otis Elevator Company (Otis Worldwide Corp.)
• Original Assignee: Otis Elevator Company (Otis Worldwide Corp.)
• Inventors: Gewinner, Jürgen, Robledo Barrio, Rodolfo
• Primary Examiner(s): Salata; Jonathan
• Application Number:
  US11/813,232
• Publication Number:
  US 20080000726A1
• Time in Patent Office: 2,042 Days
• Field of Search: 187/277, 187/289, 187/290, 187/294, 187/296, 187/297, 318807-811, 318/376, 307 64- 66
• US Class Current: 187/290
• CPC Class Codes: B66B 1/30 effective on driving gear , e.g. acting on power electronics, on inverter or rectifier controlled motor
• CPC Class Codes: B66B 5/027 to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door

Abstract

An operation device for an elevator system includes terminals connectable to a 3-phase AC power source providing a respective AC power supply voltage and a drive device connected to the terminals for driving a motor of the elevator system. A transformer is connected to at least two of the terminals and provides at least one supply voltage to the remainder of the elevator system. In an emergency operation of the elevator system, an auxiliary power supply having an output providing an auxiliary output voltage is connected to the transformer for generating an auxiliary supply voltage provided to the drive device via the transformer.

Claims

1. An operation device for an elevator system comprising:

a plurality of terminals configured to receive AC power supply voltage from a 3-phase AC power source;

a drive device connected to the plurality of terminals for driving a motor of the elevator system, the motor causing movement of an elevator car;

a transformer connected to at least two of the plurality of terminals, the transformer providing at least one supply voltage to the remainder of the elevator system;

an auxiliary power supply having an auxiliary power supply output for providing an auxiliary output voltage;

the auxiliary power supply output being connected to the transformer in an emergency operation of the elevator system for generating an auxiliary supply voltage provided to the drive device via the transformer.

2. The operation device according to claim 1, wherein

the transformer is connected to respective two of the plurality of terminals for receiving a 2-phase voltage,

the auxiliary power supply output providing a 2-phase auxiliary output voltage,

the auxiliary power supply output is connectable, in emergency operation of the elevator system, to the transformer for generating a 2-phase auxiliary supply voltage provided to the drive device via the transformer.

3. The operation device according to claim 1, wherein the auxiliary supply voltage provided to the drive device is higher in magnitude than the auxiliary output voltage of the auxiliary power supply.

4. The operation device according to claim 1, wherein

the transformer has a primary and a secondary winding the primary winding being configured to receive power from the 3-phase AC power source and the secondary winding providing at least one supply voltage to the remainder of the elevator system, and

the auxiliary power supply output being connected, in emergency operation of the elevator system, to the primary winding of the transformer for generating the auxiliary supply voltage provided to the drive device via the primary winding of the transformer.

5. The operation device according to claim 4, wherein

the primary winding of the transformer has primary winding terminals providing a first tapping and a second tapping,

the first tapping being adapted to be connected to the 3-phase AC power source,

the auxiliary power supply output being connected, in emergency operation of the elevator system, to the second tapping for generating the auxiliary supply voltage provided to the drive device via the first tapping.

6. The operation device according to claim 5, wherein

the plurality of terminals for connection to the 3-phase AC power source have a first voltage terminal, a second voltage terminal and a third voltage terminal for providing a respective AC power supply voltage,

the drive device being connected to the first voltage terminal, the second voltage terminal and the third voltage terminal,

the first tapping of the primary winding of the transformer being connected to the first voltage terminal and the second voltage terminal,

the second tapping of the primary winding of the transformer being connected, in emergency operation of the elevator system, to the first voltage terminal and to the auxiliary power supply output for generating the auxiliary supply voltage to be provided to the drive device via the first tapping.

7. The operation device according to claim 1, wherein the auxiliary power supply comprises a battery-fed DC/AC inverter.

8. The operation device according to claim 7, wherein the DC/AC inverter provides a modified or a true sine wave output voltage.

9. The operation device according to claim 1, wherein the auxiliary power supply is designed such that the auxiliary output voltage is selectable in magnitude.

10. The operation device according to claim 1, wherein

the elevator system comprises a door operating device for operating a door of an elevator car,

the door operating device receiving the auxiliary output voltage of the auxiliary power supply.

11. The operation device according to claim 10, wherein

the plurality of terminals for connection to the 3-phase AC power source comprise a neutral terminal for connection to a neutral pole of the 3-phase AC power source, and

the door operating device, in normal operation of the elevator system, is connected to the neutral terminal and to one of the voltage terminals of the 3-phase AC power source.

12. The operation device according to claim 10, wherein the door operating device, in emergency operation of the elevator system, is connected to the auxiliary power supply output for receiving the auxiliary output voltage of the auxiliary power supply and to one of the primary winding terminals of the transformer.

13. The operation device according to claim 12, wherein, in emergency operation of the elevator system, the auxiliary power supply output is connected to the neutral terminal of the door operating device.

14. The operation device according to claim 1, comprising an emergency switching device connected downstream to the terminals for disconnecting the 3-phase AC power source from the elevator system in emergency operation.

15. The operation device according to claim 1, wherein the motor causes movement of a hoisting sheave.

16. An operation device for an elevator system, comprising:

a plurality of terminals configured to receive AC power supply voltage from a 3-phase AC power source;

a drive device connected to the plurality of terminals for driving a motor of the elevator system;

a transformer connected to at least two of the plurality of terminals, the transformer providing at least one supply voltage to a remainder of the elevator system, the transformer having a primary winding and a secondary winding, the primary winding being configured to receive power from the 3-phase AC power source and the secondary winding providing the supply voltage to the remainder of the elevator system; and

an auxiliary power supply having an auxiliary power supply output for providing an auxiliary output voltage, the auxiliary power supply output being connected to the primary winding of the transformer in emergency operation of the elevator system for generating an auxiliary supply voltage provided from the primary winding of the transformer to the drive device.

17. An operation device, comprising:

a plurality of terminals configured to receive AC power supply voltage from a 3-phase AC power source;

a drive device connected to the plurality of terminals for driving a motor of the elevator system;

a transformer connected to at least two of the plurality of terminals, the transformer providing at least one supply voltage to a remainder of the elevator system; and

an auxiliary power supply having an auxiliary power supply output for providing an auxiliary output voltage, the auxiliary power supply output being connected to the transformer in an emergency operation of the elevator system for generating an auxiliary supply voltage provided to the drive device via the transformer, the auxiliary power supply comprising a DC/AC inverter that provides at least one of a modified sine wave output voltage or a true sine wave output voltage.

18. An operation device, comprising:

a plurality of terminals configured to receive AC power supply voltage from a 3-phase AC power source;

a drive device connected to the plurality of terminals for driving a motor of the elevator system;

a transformer connected to at least two of the plurality of terminals, the transformer providing at least one supply voltage to a remainder of the elevator system; and

an auxiliary power supply having an auxiliary power supply output for providing an auxiliary output voltage, the auxiliary power supply output being connected to the transformer in an emergency operation of the elevator system for generating an auxiliary supply voltage provided to the drive device via the transformer, the auxiliary output voltage being selectable in magnitude.