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公开(公告)号：US11897725B2
公开(公告)日：2024-02-13
申请号：US16925945
申请日：2020-07-10
Applicant: Otis Elevator Company
Inventor： Steven M. Millett , Ismail Agirman , Amir Lotfi
CPC classification number: B66B1/32 , B66B5/02 , B66B11/0476
Abstract: A braking system for an elevator includes an electromagnetic brake operably connected to an elevator car, and a control circuit operably connected to the electromagnetic brake. The control circuit includes a switching mechanism configured to selectively modify a rate of engagement of the electromagnetic brake to selectively modify a rate of deceleration of the elevator car. The switching mechanism has a first position, a second position and a third position, to selectively modify the rate of engagement.
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公开(公告)号：US11482942B2
公开(公告)日：2022-10-25
申请号：US15799387
申请日：2017-10-31
Applicant: OTIS ELEVATOR COMPANY
Inventor： Ismail Agirman
IPC: H02P6/06 , H02M5/458 , B66B1/30 , H02P27/08 , H02M7/04 , H02M7/00 , B66B1/00 , H02M5/00 , H02M5/40 , H02P27/06 , H02M7/68
Abstract: A three-phase regenerative drive configured for operation from a single phase alternating current (AC) power source, the three-phase regenerative drive including a three-phase converter having inputs for connection to a single-phase AC source, the three-phase converter having three phase legs, a three-phase inverter for connection to a motor, the three phase inverter configured to provide three phase command signals to the motor, and a DC bus connected between the three-phase converter and the three-phase inverter. A first phase leg of the three-phase converter and a second phase leg of the three-phase converter are employed to direct current from the single-phase AC source to the DC Bus and a third phase leg of the three phase legs of the three-phase converter returns current to a return of the AC source.
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公开(公告)号：US20200339382A1
公开(公告)日：2020-10-29
申请号：US16925945
申请日：2020-07-10
Applicant: Otis Elevator Company
Inventor： Steven M. Millett , Ismail Agirman , Amir Lotfi
Abstract: A braking system for an elevator includes an electromagnetic brake operably connected to an elevator car, and a control circuit operably connected to the electromagnetic brake. The control circuit includes a switching mechanism configured to selectively modify a rate of engagement of the electromagnetic brake to selectively modify a rate of deceleration of the elevator car. The switching mechanism has a first position, a second position and a third position, to selectively modify the rate of engagement.
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公开(公告)号：US10654682B2
公开(公告)日：2020-05-19
申请号：US15537037
申请日：2015-12-09
Applicant: Otis Elevator Company
Inventor： Ismail Agirman , Jeffrey M. Izard , HanJong Kim
IPC: B66B1/30 , H02M5/458 , H02M7/487 , H02M7/49 , H02P25/22 , H02M1/12 , H02M1/00 , H02P27/14 , H02P4/00
Abstract: A conveyance system includes a machine having a motor; a source of AC power; a drive system coupled to the source of AC power, the drive system to provide multi-phase drive signals to the motor, the drive system including: a first drive having a first converter and a first inverter, the first convertor including a first positive DC bus and a first negative DC bus; a second drive having a second converter and a second inverter, the second convertor including a second positive DC bus and a second negative DC bus; wherein the first positive DC bus and the second DC positive bus are electrically connected and the first negative DC bus and the second negative DC bus are electrically connected.
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公开(公告)号：US10513413B2
公开(公告)日：2019-12-24
申请号：US15103502
申请日：2013-12-18
Applicant: OTIS ELEVATOR COMPANY
Inventor： Ismail Agirman , Shashank Krishnamurthy , Prasanna Nagarajan , Hanjong Kim , Yang Wang
Abstract: A method (70) for controlling a multilevel regenerative drive (30) having a converter (32) and an inverter (34) is disclosed. The method (70) may include applying at least one of unipolar modulation and bipolar modulation to the converter (32), and applying at least one of unipolar modulation and bipolar modulation to the inverter (34). A control system (52) for a mechanical system (20) having a motor (28) is also disclosed. The control system (52) may comprise a converter (32) operatively connected to a power source (29), and an inverter (34) operatively connected to the motor (28) of the mechanical system (20). At least one controller may be in communication with the converter (32) and inverter (34), and may be configured to apply at least one of unipolar modulation and bipolar modulation to each of the converter (32) and the inverter (34).
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Patent Agency Ranking
公开(公告)号：US10343872B2
公开(公告)日：2019-07-09
申请号：US14888807
申请日：2013-05-08
Applicant: OTIS ELEVATOR COMPANY
Inventor： Ismail Agirman , Carlo Mezzadri
IPC: B66B1/06 , B66B1/30 , H02J5/00 , H02P3/14 , H02J7/02 , H02J7/14 , H02J7/34 , H02J7/35 , H02P3/12 , H01M10/06 , H01M10/44 , H01M16/00 , H02J7/00 , H01M10/0525 , H01M10/30
Abstract: A system for an elevator includes at least one battery and an energy exchanger coupled to the at least one battery and configured to let a DC bus float between a first voltage and a second voltage. An energy storage device is coupled to the energy exchanger. The energy storage device is configured to recapture energy that is not recaptured by the at least one battery during a run of the elevator. The energy storage device is also configured to provide energy to the elevator when demand for energy by the elevator exceeds a threshold.
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公开(公告)号：US20190173410A1
公开(公告)日：2019-06-06
申请号：US15832216
申请日：2017-12-05
Applicant: OTIS ELEVATOR COMPANY
Inventor： Ismail Agirman
CPC classification number: H02P27/085 , H02M1/126 , H02M5/4585 , H02M7/219 , H02M7/5395 , H02M2001/0009 , H02M2001/0048 , H02P3/14 , H02P27/16 , H02P2209/13
Abstract: A three-phase regenerative drive employing multiple converter pulse width modulation (PWM) strategies. The drive includes a three-phase converter having inputs for connection to a three-phase AC source, the three-phase converter having three phase legs, a DC bus operably connected to the three-phase converter wherein the three phase converter is configured to direct current from the three-phase AC source to the DC bus, and a three-phase inverter operably connected to the DC bus and a motor, the three phase inverter configured to draw current from the DC bus and provide three phase command signals to the motor. The three-phase converter employs a first PWM strategy to supply current to the DC bus, and the converter employs a second PWM strategy to supply current to the DC bus if a total current in the three phase legs exceeds a selected threshold.
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公开(公告)号：US10221038B2
公开(公告)日：2019-03-05
申请号：US15103170
申请日：2013-12-18
Applicant: OTIS ELEVATOR COMPANY
Inventor： Ismail Agirman , Yang Wang , Shashank Krishnamurthy
Abstract: A control system (48) having a motor (28) is disclosed. The control system (48) may include a converter (32) operatively connected to a power source (36), an inverter (34) operatively connected to the motor (28), and a controller (50) operatively connected to the converter (32) or inverter (34). The controller (50) may be configured to receive control command signals, receive state feedback signals, and generate duty cycle signals for upper and lower arms of each phase (40) of the motor (28) based at least in part on the control command signals and state feedback signals. The duty cycle signals may minimize neutral point current in the converter (32) or inverter (34).
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公开(公告)号：US20160362276A1
公开(公告)日：2016-12-15
申请号：US15178608
申请日：2016-06-10
Applicant: OTIS ELEVATOR COMPANY
Inventor： Yang Wang , Shashank Krishnamurthy , HanJong Kim , Ismail Agirman
Abstract: A method of stopping an elevator in the event of a power failure is provided. The method includes determining that a power source for a drive system of an elevator has failed, retaining energy electrically separate from the power source, managing the retained energy to enable drive-assisted emergency stopping of an elevator, and stopping an elevator using the managed, retained energy.
Abstract translation: 提供了在停电的情况下停止电梯的方法。 该方法包括确定用于电梯的驱动系统的电源已经发生故障，保持能量与电源电气分离，管理保留的能量以使电梯的驱动辅助紧急停止，以及使用被管理的电梯停止电梯， 保留能量。
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公开(公告)号：US20160308474A1
公开(公告)日：2016-10-20
申请号：US15103450
申请日：2013-12-18
Applicant: OTIS ELEVATOR COMPANY
Inventor： Steven M. Millett , Ismail Agirman
Abstract: A regenerative drive (30) and method for providing power from such to at least one auxiliary power supply (41, 43) is disclosed. The drive may include a converter (32) and an inverter (34) connected by a DC bus (33), and a controller (54) configured to apply at least one of unipolar modulation and bipolar modulation to the converter (32) and the inverter (34), and to provide about half of the output voltage across the upper portion (130) of the DC bus (33) and about half of the output voltage across the lower portion (136) of the DC bus (33), when the upper and lower portions (130, 136) of the DC bus (33) are unevenly loaded. A first auxiliary power supply (41) may be connected to one of the upper and lower portions (130, 136) of the DC bus (33) and may receive power from the multilevel regenerative drive (30).
Abstract translation: 公开了一种用于从至少一个辅助电源（41,43）提供电力的再生驱动（30）和方法。 驱动器可以包括转换器（32）和由DC总线（33）连接的逆变器（34），以及被配置为将至少一个单极调制和双极性调制施加到转换器（32）的控制器（54） 逆变器（34），并且跨越DC总线（33）的上部（130）提供约一半的输出电压，并且跨过DC总线（33）的下部（136）的输出电压的大约一半， 当直流总线（33）的上部和下部（130,136）不均匀地加载时。 第一辅助电源（41）可以连接到DC总线（33）的上部和下部（130,136）中的一个，并且可以从多电平再生驱动器（30）接收电力。
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