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公开(公告)号：US09957131B2
公开(公告)日：2018-05-01
申请号：US14651284
申请日：2012-12-13
Applicant: OTIS ELEVATOR COMPANY
Inventor： Ismail Agirman , Edward Piedra
Abstract: Embodiments are directed to calculating a current associated with a motor of an elevator based on an output of a speed regulator, and controlling the elevator based on the current. Embodiments are directed to examining a feeder current obtained via a converter current sensor of a regenerative drive during a peak power condition, and regulating a speed of an elevator based on the feeder current.
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公开(公告)号：US20170362051A1
公开(公告)日：2017-12-21
申请号：US15529435
申请日：2015-11-19
Applicant: Otis Elevator Company
Inventor： Steven M. Millet , 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. A control circuit is operably connected to the electromagnetic brake and includes a switching mechanism to selectively modify a rate of engagement of the electromagnetic brake to selectively modify deceleration of the elevator car. A method of engaging an electromagnetic brake for an elevator system includes detecting one or more operational characteristics of the elevator system and selecting a first position or a second position of a switching mechanism disposed at a brake control circuit depending on the sensed operational characteristics. Electrical current is directed through one or more components of the brake control circuit, depending on the position of the switching mechanism, to determine a rate of engagement of the electromagnetic brake. A flow of electrical current through the brake control circuit is stopped, thereby causing engagement of the electromagnetic brake.
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公开(公告)号：US20160311644A1
公开(公告)日：2016-10-27
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).
Abstract translation: 公开了一种用于控制具有转换器（32）和逆变器（34）的多电平再生驱动（30）的方法（70）。 方法（70）可以包括将单极调制和双极性调制中的至少一个施加到转换器（32），以及向逆变器（34）施加单极调制和双极性调制中的至少一个。 还公开了一种用于具有马达（28）的机械系统（20）的控制系统（52）。 控制系统（52）可以包括可操作地连接到电源（29）的转换器（32）和可操作地连接到机械系统（20）的电动机（28）的逆变器（34）。 至少一个控制器可以与转换器（32）和逆变器（34）通信，并且可以被配置为向转换器（32）和逆变器（34）中的每一个施加单极调制和双极性调制中的至少一个。
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公开(公告)号：US20160194179A1
公开(公告)日：2016-07-07
申请号：US14911378
申请日：2013-08-13
Applicant: OTIS ELEVATOR COMPANY
Inventor： Ismail Agirman , Daryl J. Marvin
Abstract: An elevator system includes a battery; a machine having a motor to impart motion to an elevator car; an inverter having a plurality of switches to convert DC power from the battery to AC power for the machine in a motoring mode; a speed sensor coupled to the machine, the speed sensor to generate a speed signal indicative of machine speed; and a controller to apply braking signals to a group of the switches in a braking mode, the braking signals having a duty cycle in response to the speed signal.
Abstract translation: 电梯系统包括电池; 具有用于向电梯轿厢传递运动的电动机的机器; 具有多个开关的逆变器，用于将来自所述电池的DC电力转换为用于所述机器的电动模式的AC电力; 耦合到机器的速度传感器，速度传感器产生指示机器速度的速度信号; 以及控制器，用于在制动模式下向一组开关施加制动信号，所述制动信号响应于速度信号具有占空比。
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公开(公告)号：US20150375959A1
公开(公告)日：2015-12-31
申请号：US14767381
申请日：2013-02-14
Applicant: OTIS ELEVATOR COMPANY
Inventor： Ismail Agirman
Abstract: An elevator system includes a battery; a machine having a motor for imparting motion to an elevator car; an inverter for converting DC power from the battery to AC power for the machine in motoring mode and converting AC power from the machine to DC power for the battery in regenerative mode; and a controller to control the inverter, the controller implementing at least one of: detecting an overload at the battery in motoring mode and reducing car speed in response to the overload; detecting an overcharge at the battery in regenerative mode and reducing car speed in response to the overcharge; detecting motor direct current in a motor field weakening mode and reducing car speed in response to the motor direct current; and detecting car load and adjusting car speed in response to car load.
Abstract translation: 电梯系统包括电池; 具有用于向电梯轿厢施加运动的电动机的机器; 用于将来自所述电池的DC电力转换成用于所述机器的电动机的电动机模式的逆变器，并且将来自所述机器的AC电力转换为用于所述电池的再生模式的DC电力; 控制器控制逆变器，所述控制器实现以下至少一个：在电动模式下检测电池的过载并响应于过载而降低轿厢速度; 在再生模式下检测电池的过充电并响应于过充电而降低轿厢速度; 在电机弱磁模式下检测电机直流电流，并根据电机直流电流降低车速; 并且响应于轿厢负载检测轿厢负载并调节轿厢速度。
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Patent Agency Ranking
公开(公告)号：US11053096B2
公开(公告)日：2021-07-06
申请号：US15688288
申请日：2017-08-28
Applicant: Otis Elevator Company
Inventor： Ismail Agirman
Abstract: A method and system for providing power to an elevator hoist motor is disclosed. An isolated bi-directional dc/dc converter is coupled between a power converter and a power inverter. A battery is coupled to the isolated bi-directional dc/dc converter. A processor is configured to sense power levels and couple the battery to an elevator hoist motor via the isolated bi-directional dc/dc converter depending on the voltage of the main power supply. The isolated bi-directional dc/dc converter is also configured to provide power to charge the battery.
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公开(公告)号：US10381968B2
公开(公告)日：2019-08-13
申请号：US15832216
申请日：2017-12-05
Applicant: OTIS ELEVATOR COMPANY
Inventor： Ismail Agirman
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：US20190062111A1
公开(公告)日：2019-02-28
申请号：US15688288
申请日：2017-08-28
Applicant: Otis Elevator Company
Inventor： Ismail Agirman
Abstract: A method and system for providing power to an elevator hoist motor is disclosed. An isolated bi-directional dc/dc converter is coupled between a power converter and a power inverter. A battery is coupled to the isolated bi-directional dc/dc converter. A processor is configured to sense power levels and couple the battery to an elevator hoist motor via the isolated bi-directional dc/dc converter depending on the voltage of the main power supply. The isolated bi-directional dc/dc converter is also configured to provide power to charge the battery.
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公开(公告)号：US10218262B1
公开(公告)日：2019-02-26
申请号：US15713829
申请日：2017-09-25
Applicant: Otis Elevator Company
Inventor： Ismail Agirman
Abstract: A system includes a converter operatively connected to an alternating current (AC) power source and a direct current (DC) bus, an inverter operatively connected to a motor and the DC bus, and a hybrid DC link system operatively connected between a high side and a low side of the DC bus. The converter includes a first plurality of switching devices in selective communication with each phase of the AC power source and the DC bus. The inverter includes a second plurality of switching devices in selective communication with each phase of the motor and the DC bus. The hybrid DC link system includes a ripple current control branch in parallel with an energy buffering branch.
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公开(公告)号：US20180248494A1
公开(公告)日：2018-08-30
申请号：US15553574
申请日：2016-02-12
Applicant: Otis Elevator Company
Inventor： Ismail Agirman , HanJong Kim
CPC classification number: H02M7/493 , H02M1/00 , H02M2001/0064 , H02P27/06
Abstract: A power system including a first drive including a first drive output, a second drive including a second drive output, wherein the first drive output is larger than the first drive output, at least one inductor operably coupled to the first drive and the second drive, and a load operably coupled to the system output.
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