公开(公告)号：US11742784B2

公开(公告)日：2023-08-29

申请号：US16768839

申请日：2018-10-18

申请人： Liebherr-Components Biberach GmbH

发明人： Tobias Scheu ,  Gernot Schullerus

IPC分类号： H02P21/04 ,  H02P27/04 ,  H02M1/38 ,  H02M1/00

CPC分类号： H02P27/047 ,  H02M1/0009 ,  H02M1/385

摘要： The invention relates to a method for determining an error voltage of a current converter to which a load, in particular in the form of a three-phase machine such as an asynchronous machine, is connected, is determined and if necessary compensated, wherein an output voltage on the current converter is increased stage-by-stage or step-by-step and which is measured here as a current adjusting a step response. The invention further relates to a three-phase machine, for example in the form of an asynchronous machine having power electronics comprising a current converter and in the form of a compensation device for compensating the error voltage of the current converter. The invention further relates to a method for operating and/or controlling such a three-phase machine, in which the error voltage of the current converter is determined and compensated. According to the invention, the error voltage is determined from the current measured as a step response and from a resistance of the load, wherein said resistance is determined from a target voltage jump and from a simultaneously measured actual current jump in a relatively high current range of at least 30% of at least 50% of the rated current of the end stage of the current converter.

公开(公告)号：US20180226912A1

公开(公告)日：2018-08-09

申请号：US15641758

申请日：2017-07-05

申请人： LSIS CO., LTD.

发明人： Seung-Cheol CHOI ,  Hak-Jun LEE

IPC分类号： H02P27/08 ,  H02P23/00

CPC分类号： H02P27/085 ,  H02P23/0004 ,  H02P23/08 ,  H02P27/047 ,  H02P27/14

摘要： An apparatus for controlling an inverter is disclosed. The apparatus for controlling the inverter contained in an inverter system configured to drive a motor determines a slip frequency to be used for compensation of a frequency of a first reference voltage, not only using a first reference voltage (including an amplitude and frequency) of the first reference voltage applied to the inverter, but also using an output current of the motor or a rotor speed of the motor. The apparatus determines not only a frequency of a second reference voltage obtained by compensation of the slip frequency, but also an amplitude of the second reference voltage corresponding to the frequency of the second reference voltage.

公开(公告)号：US09853587B2

公开(公告)日：2017-12-26

申请号：US14259385

申请日：2014-04-23

申请人： Yaskawa America, Inc.

发明人： Mahesh M. Swamy ,  Anupama Balakrishnan ,  Joshua David Collins

IPC分类号： H02P1/00 ,  H02P1/28 ,  H02P3/00 ,  H02P7/06 ,  H02P7/14 ,  H02P23/00 ,  H02P25/00 ,  H02P27/00 ,  H02P27/04 ,  H02M1/15 ,  H02M5/458 ,  H02M7/5387 ,  B26B19/06 ,  A61B17/16 ,  B26B19/00 ,  B26B19/38

CPC分类号： H02P27/047 ,  A61B17/1626 ,  B26B19/00 ,  B26B19/06 ,  B26B19/38 ,  H02M1/15 ,  H02M5/458 ,  H02M7/53875

摘要： A variable frequency motor drive comprises a converter including a rectifier having an input for connection to an AC power source and converting the AC power to DC power. A DC bus is connected to the rectifier circuit. At least one bus capacitor is across the DC bus. An inverter receives DC power from the DC bus and converts the DC power to AC power to drive a motor. A controller is operatively connected to the converter. The controller comprises a speed control controlling the inverter responsive to a speed command to maintain a desired motor speed. A speed foldback control measures DC bus ripple voltage and regulates the speed command responsive to the measured DC bus ripple voltage.

公开(公告)号：US09722527B2

公开(公告)日：2017-08-01

申请号：US15038210

申请日：2014-11-18

申请人： Valeo Systemes Thermiques

发明人： Xavier Goumain ,  Xavier Rousseil

IPC分类号： H02P27/00 ,  H02P27/04 ,  H02P6/20 ,  H02P21/34 ,  H02P6/08

CPC分类号： H02P27/047 ,  H02P6/08 ,  H02P6/20 ,  H02P21/34

摘要： The invention relates to a power supply system of an electric motor (1) comprising a power circuit (3), the input terminals of which are connected to a DC voltage source, and an electronic circuit (4) for controlling the electric motor (1) based on a control signal representative of the set speed of the motor. According to the invention, the system comprises a means (6) capable of reducing the DC voltage value received by the power circuit (3) during the starting of the electric motor (1) and/or during operating phases in which the set speed of the electric motor (1) is below a threshold speed.

公开(公告)号：US20170063270A1

公开(公告)日：2017-03-02

申请号：US15308975

申请日：2015-05-07

申请人： AKER SOLUTIONS AS

发明人： Truls NORMANN

IPC分类号： H02P23/16 ,  H02P5/74 ,  H02K5/132 ,  H02J9/06

CPC分类号： H02P23/16 ,  H02J3/00 ,  H02J3/34 ,  H02J9/061 ,  H02J9/062 ,  H02K5/132 ,  H02P5/74 ,  H02P27/047

摘要： Subsea power supply assembly (10, 20) supplying electric power to a motor (11) at a second location (90) from a first location (80), comprising a variable speed drive (13) (VSD) and a step-up transformer (15) connected to it. At a subsea location the assembly comprises a first step-down transformer (17) with input (17a) and output (17b) and an uninterruptable power supply (25) having an input (25a). A step-out cable (19) supplies power from the step-up transformer (15) to the motor (11). The cable (19) connects to the first step-down transformer (17). The speed of the electric motor (11) is proportional to the output frequency of the VSD (13). The power receiving input (25a) of the uninterruptable power supply (25) connects to the output (17b) of the first step-down transformer (17), thereby receiving electrical power with frequency equal to the output frequency of the VSD (13).

摘要翻译： 海底电源组件（10,20）从第一位置（80）向第二位置（90）向马达（11）提供电力，包括变速驱动器（13）（VSD）和升压变压器 （15）连接到它。 在海底位置，组件包括具有输入（17a）和输出（17b）的第一降压变压器（17）和具有输入（25a）的不间断电源（25）。 降压电缆（19）将升压变压器（15）的电力供给电动机（11）。 电缆（19）连接到第一降压变压器（17）。 电动机（11）的速度与VSD（13）的输出频率成比例。 不间断电源（25）的电力接收输入（25a）连接到第一降压变压器（17）的输出（17b），从而接收频率等于VSD（13）的输出频率的电力， 。

公开(公告)号：US20160036363A1

公开(公告)日：2016-02-04

申请号：US14883721

申请日：2015-10-15

申请人： Hamilton Sundstrand Corporation

发明人： Richard A. Himmelmann

IPC分类号： H02P9/48 ,  H02P9/14

CPC分类号： H02P9/48 ,  B60K2025/005 ,  B60Y2200/24 ,  B60Y2200/25 ,  F01P7/048 ,  H02P9/14 ,  H02P25/30 ,  H02P27/047

摘要： An electrical system for a motorized system can include a controllable voltage AC generator configured to be connected to a power generation unit shaft and configured to convert rotational energy to electrical energy, wherein the controllable voltage AC generator is configured to output a desired voltage irrespective of a change in a rotational speed of the controllable voltage AC generator, and an AC bus operative to connect the controllable voltage AC generator to an AC electrical device.

摘要翻译： 用于电动系统的电气系统可以包括可控电压AC发电机，其被配置为连接到发电单元轴并且被配置为将旋转能量转换成电能，其中可控电压AC发电机被配置为输出期望的电压，而不管 改变可控电压AC发电机的转速，以及可操作地将可控电压AC发电机连接到AC电气装置的AC总线。

公开(公告)号：US20150349691A1

公开(公告)日：2015-12-03

申请号：US14727820

申请日：2015-06-01

申请人： Rotating Right Inc.

发明人： Michael Lesanko ,  Lorne Tilby

IPC分类号： H02P25/02

CPC分类号： F04B47/06 ,  F04B49/06 ,  H02P25/032 ,  H02P25/06 ,  H02P27/047

摘要： A system and method is provided for controlling a reciprocating electric submersible pump with an AC linear motor. The system includes a programmable logic controller for controlling an inverter to provide pulse-width modulated AC power to the linear motor. Under operating conditions, a constant voltage is applied to the linear motor whose operating frequency can be controlled by the pulse-width modulation.

摘要翻译： 提供了一种用于控制具有AC线性电动机的往复式电潜泵的系统和方法。 该系统包括一个可编程逻辑控制器，用于控制逆变器向线性电机提供脉宽调制的交流电源。 在工作条件下，对线性电机施加恒定电压，其工作频率可以通过脉冲宽度调制来控制。

公开(公告)号：US20150263660A1

公开(公告)日：2015-09-17

申请号：US14656370

申请日：2015-03-12

申请人： CANRIG DRILLING TECHNOLOGY LTD.

发明人： Charles PATRICK ,  Kevin R. WILLIAMS

IPC分类号： H02P23/00 ,  E21B19/00 ,  B66D1/12 ,  E21B19/084 ,  H02P25/18 ,  B66D1/48

CPC分类号： B66D1/12 ,  B66D1/485 ,  H02P25/184 ,  H02P25/188 ,  H02P27/047 ,  H02P2207/01

摘要： A multi-speed electric motor may include a plurality of windings arranged into winding phase groups. A speed controller may switch two or more windings between a series and a parallel configuration in each winding phase group. The speed controller may also switch the winding phase groups between a delta and a Wye configuration. By selecting a specific configuration, one or more of the holding torque, torque ratio, no-load maximum speed, and volts/Hz ratio of the AC motor may be optimized for a given application. In some embodiments, the AC motor may be used as part of a piece of drilling rig equipment such as a drawworks, winch, mud pump, top drive, or rotary table.

摘要翻译： 多速电动机可以包括布置成绕组相组的多个绕组。 速度控制器可以在每个绕组相组中的串联和并联配置之间切换两个或更多个绕组。 速度控制器还可以将绕组相位组切换到三角形和W形配置之间。 通过选择特定的配置，可以针对给定的应用优化AC电动机的保持转矩，转矩比，空载最大速度和伏/ Hz比中的一个或多个。 在一些实施例中，AC电动机可以用作诸如绞车，绞车，泥浆泵，顶部驱动器或旋转工作台的钻机设备的一部分。

公开(公告)号：US20150002072A1

公开(公告)日：2015-01-01

申请号：US13931121

申请日：2013-06-28

申请人： Eaton Corporation

发明人： Yaojin Mo ,  Huaqiang Li ,  Anbo Yu ,  Dawei Li ,  Jingfeng Xie

IPC分类号： H02P23/00

CPC分类号： H02P27/06 ,  H02M2007/53876 ,  H02P3/18 ,  H02P21/0021 ,  H02P23/00 ,  H02P23/20 ,  H02P23/28 ,  H02P27/047 ,  H02P29/0241

摘要： A system and method for controlling an adjustable speed drive (ASD) to decelerate an AC load during a generating mode of operation is disclosed. The ASD includes a capacitor and an inverter coupled to a DC link. A current sensor system is coupled to an output of the inverter. The ASD further includes a control system programmed to calculate an energy of the capacitor, generate a reference power using the calculated capacitor energy, and calculate a feedback power from realtime current signals received from the current sensor system. The control system compares the feedback power to the reference power, defines a frequency offset based on the comparison, generates a speed command using the frequency offset, and outputs the speed command to the inverter to maintain a smooth DC link voltage during deceleration.

公开(公告)号：US20140232307A1

公开(公告)日：2014-08-21

申请号：US14347493

申请日：2011-09-30

申请人： Ryo Yokozutsumi ,  Yuruki Okada ,  Hisanori Yamasaki ,  Sho Kato

发明人： Ryo Yokozutsumi ,  Yuruki Okada ,  Hisanori Yamasaki ,  Sho Kato

IPC分类号： H02P21/00

CPC分类号： H02P21/0035 ,  H02P6/28 ,  H02P21/00 ,  H02P21/0021 ,  H02P21/0089 ,  H02P27/047 ,  H02P27/085

摘要： A vector control device includes a vector control unit computing an output voltage output from the electric power converter according to vector control based on torque command and flux command and generating a PWM signal for controlling the electric power converter based on the output voltage, a first flux-command generation unit generating a flux command for asynchronous PWM mode, and a second flux-command generation unit generating a flux command for synchronous PWM mode. When an output frequency of the electric power converter is lower than a predetermined value, a flux command generated by the first flux-command generation unit is input to the vector control unit, and when the output frequency of the electric power converter is equal to or higher than a predetermined value, a flux command generated by the second flux-command generation unit is input to the vector control unit.

摘要翻译： 矢量控制装置包括矢量控制单元，其根据基于转矩指令和磁通指令的矢量控制，计算从电力变换器输出的输出电压，并根据输出电压生成用于控制电力变换器的PWM信号，第一磁通 产生用于异步PWM模式的通量指令的第二通量指令生成单元和产生用于同步PWM模式的通量指令的第二通量指令生成单元。 当电力转换器的输出频率低于预定值时，将由第一磁通指令产生单元产生的磁通指令输入到矢量控制单元，当电力转换器的输出频率等于或等于 高于预定值，由第二磁通指令产生单元产生的磁通指令被输入到矢量控制单元。