EP1154948A1 - Inverter controller for elevator hoist and door motors - Google Patents
Inverter controller for elevator hoist and door motorsInfo
- Publication number
- EP1154948A1 EP1154948A1 EP00919319A EP00919319A EP1154948A1 EP 1154948 A1 EP1154948 A1 EP 1154948A1 EP 00919319 A EP00919319 A EP 00919319A EP 00919319 A EP00919319 A EP 00919319A EP 1154948 A1 EP1154948 A1 EP 1154948A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- motor
- inverter
- controller
- door
- hoist
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
- B66B13/143—Control systems or devices electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
- B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
Definitions
- This invention involves an elevator in which the elevator hoist motor and the door motor utilize controlled alternating current power.
- Elevator cars are typically moved by a hoist motor and the car doors are opened and closed by a door motor.
- the proper voltage and frequency current is provided by a hoist motor inverter to the hoist motor based on instructions from a hoist motor controller, and the proper voltage and frequency current is provided to the door motor by a door motor inverter based on command input from a door motor controller.
- the hoist motor and the door motor are operated simultaneously to increase a car's operating efficiency. For example, immediately before the car reaches or leaves a floor, the door motor is driven along with the hoist motor. Also, releveling (aligning the floor of the car with the floor at the entrance) may be performed while doors are opened. Thus, while high performance, general-use elevators may require that the hoist motor and the door motor be driven simultaneously to increase operating efficiency, certain home elevator applications do not require high operating efficiency. For such elevators, the need to provide separate hoist motor inverters and door motor inverters has contributed to the cost of the product.
- this invention is equipped with a hoist motor that moves a car, a door motor that opens and closes the car door or doors, an inverter section that simultaneously controls the voltage and frequency of the current provided to the hoist motor and the door motor, and a control section that sends instructions to this inverter section to control the speed at which the car travels and the speed at which the door opens and closes. It is constituted so that the proper voltage and frequency current will be provided to the hoist motor from the inverter section until the car reaches a floor; and, after the car reaches a floor, the proper voltage and frequency will then be provided to the door motor from the same inverter section.
- FIG. 1 is a block diagram that shows one application example of an elevator associated with this invention.
- elevator car 1 is driven in a hoistway (not shown) and includes a horizontally sliding door 5 driven by door operator motor 6.
- the car 1 is positioned verti- cally by means of a rope 2 attached to the car 1 and suspended from the elevator drive sheave 3 a.
- the rope 2 terminates at its other end at a counter weight 4 which provides a balancing of the vertical forces on the carl .
- Drive sheave 3a is rotated by hoist motor 3 which turns an intermediate shaft 3b as shown.
- Both the hoist motor 3 and the door motor 6 are variable voltage alternating current motors which may be precisely controlled for speed and position by varying the voltage and frequency of the supplied motor current.
- three phase variable frequency alternating current is supplied to either the hoist motor 3 or the door motor 6 by a controlled inverter section 8 which receives fixed voltage alternating current from a power source 7, such as an electric utility supply line.
- the voltage and frequency of the output current 11 from the inverter section 8 is controlled in response to the inputs from a controller 9 as shown in the figure.
- controller 9 causes the elevator hoist motor 3 the cease operation and initiates a signal 22 to a relay control 10 actuating the power relay 12.
- Power relay 12 is operated, in response to the actuator 10, to switch the output 11 of the inverter section 8 from the hoist motor 3 to the door motor 6.
- control signals provided to the inverter 8 by the controller 9 will differ in response to the controllers selection of either the hoist motor or the door motor for receiving the inverter output 11.
- a single inverter 8 and controller 9 may be used to control both a hoist motor 3 and a door motor 6 in an elevator application.
- Switching relay 11 prevents the simultaneous connection of the hoist motor 3 and the drive motor 6 to the inverter 8.
- the system according to the present invention thus eliminates the need for a second inverter and controller as is known in the prior art, in exchange for the requirement that the single remaining inverter 8 drive only one of the hoist motor and the door motor at a given time.
- a controller 9 sensing the misleveling of the elevator with the desired floor, would direct inverter 8 to power door motor 6 so as to close doors 5, then command actuator 10 to actuate the relay 12 so as to connect the inverter 8 to the hoist motor 3 and disconnect inverter 8 from door motor 6.
- the controller 9 would then control the inverter 8 so as to drive hoist motor 3 to position the elevator car 1 at the correct position within the hoistway.
- Relay 12 shown here schematically as a mechanical relay having a mechanical actuator 10, may alternatively be an electronic switch or any other device or structure which can divert the output 11 of the inverter section 8 between either the hoist motor 3 or the door motor 6, in response to signal 22 from the controller 9.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Elevator Door Apparatuses (AREA)
- Elevator Control (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5100899 | 1999-02-26 | ||
JP11051008A JP2000247553A (en) | 1999-02-26 | 1999-02-26 | Elevator |
PCT/US2000/004119 WO2000050329A1 (en) | 1999-02-26 | 2000-02-18 | Inverter controller for elevator hoist and door motors |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1154948A1 true EP1154948A1 (en) | 2001-11-21 |
EP1154948A4 EP1154948A4 (en) | 2002-10-30 |
EP1154948B1 EP1154948B1 (en) | 2004-05-12 |
Family
ID=12874759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00919319A Expired - Lifetime EP1154948B1 (en) | 1999-02-26 | 2000-02-18 | Inverter controller for elevator hoist and door motors |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1154948B1 (en) |
JP (1) | JP2000247553A (en) |
CN (1) | CN1241812C (en) |
DE (1) | DE60010668T2 (en) |
ES (1) | ES2220453T3 (en) |
WO (1) | WO2000050329A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1370482A1 (en) * | 2001-03-05 | 2003-12-17 | Manfred Schrödl | Electric drive |
CN102241356A (en) * | 2011-06-28 | 2011-11-16 | 杭州优迈科技有限公司 | Energy saving method and device for elevator door motor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04191263A (en) * | 1990-11-27 | 1992-07-09 | Mitsubishi Electric Corp | Elevator controller |
JPH09323876A (en) * | 1996-06-05 | 1997-12-16 | Toshiba Corp | Elevator controller |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06153571A (en) * | 1992-10-29 | 1994-05-31 | Toshiba Corp | Apparatus for controlling container crane |
US6002218A (en) * | 1992-11-20 | 1999-12-14 | Fujitsu General Limited | Control device for air conditioner |
US5361565A (en) * | 1993-01-19 | 1994-11-08 | Bayer Robert F | Elevating system |
US5936375A (en) * | 1997-11-05 | 1999-08-10 | Paceco Corp. | Method for energy storage for load hoisting machinery |
-
1999
- 1999-02-26 JP JP11051008A patent/JP2000247553A/en active Pending
-
2000
- 2000-02-18 CN CN 00804280 patent/CN1241812C/en not_active Expired - Fee Related
- 2000-02-18 DE DE60010668T patent/DE60010668T2/en not_active Expired - Lifetime
- 2000-02-18 EP EP00919319A patent/EP1154948B1/en not_active Expired - Lifetime
- 2000-02-18 ES ES00919319T patent/ES2220453T3/en not_active Expired - Lifetime
- 2000-02-18 WO PCT/US2000/004119 patent/WO2000050329A1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04191263A (en) * | 1990-11-27 | 1992-07-09 | Mitsubishi Electric Corp | Elevator controller |
JPH09323876A (en) * | 1996-06-05 | 1997-12-16 | Toshiba Corp | Elevator controller |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 016, no. 519 (M-1330), 26 October 1992 (1992-10-26) -& JP 04 191263 A (MITSUBISHI ELECTRIC CORP), 9 July 1992 (1992-07-09) * |
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 04, 31 March 1998 (1998-03-31) -& JP 09 323876 A (TOSHIBA CORP), 16 December 1997 (1997-12-16) * |
See also references of WO0050329A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1154948B1 (en) | 2004-05-12 |
EP1154948A4 (en) | 2002-10-30 |
WO2000050329A1 (en) | 2000-08-31 |
JP2000247553A (en) | 2000-09-12 |
CN1241812C (en) | 2006-02-15 |
DE60010668T2 (en) | 2004-10-07 |
ES2220453T3 (en) | 2004-12-16 |
CN1341074A (en) | 2002-03-20 |
DE60010668D1 (en) | 2004-06-17 |
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