公开(公告)号：US20240322704A1

公开(公告)日：2024-09-26

申请号：US18188699

申请日：2023-03-23

申请人： GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED

发明人： Zhi ZHOU ,  Duro BASIC

IPC分类号： H02M5/458 ,  H02M1/00 ,  H02P27/04

CPC分类号： H02M5/4585 ,  H02M1/0095 ,  H02P27/04

摘要： AC-DC-AC converter for delivering power to an electric motor from a power source is presented. The AC-DC-AC converter comprises a front-end converter and a motor-end converter connected through a DC link, the DC link voltage being generated and controlled by the front-end converter.

公开(公告)号：US12018422B2

公开(公告)日：2024-06-25

申请号：US18228978

申请日：2023-08-01

申请人： WHIRLPOOL CORPORATION

发明人： Daniel Quinn

IPC分类号： F04D15/00 ,  D06F34/08 ,  H02K7/14 ,  H02M1/10 ,  H02M1/32 ,  H02M3/07 ,  H02P27/04 ,  D06F34/10 ,  D06F37/30

CPC分类号： D06F34/08 ,  H02M1/10 ,  H02M1/32 ,  H02M3/073 ,  H02P27/04 ,  D06F34/10 ,  D06F37/304 ,  H02P2201/09

摘要： A circuit that increases input voltage to higher output voltage connected to a drive. The circuit can include a power input that receives the input voltage from a power source and at least one capacitor bank connected with the power input. A current-limiting surge suppressor is positioned between the power input and the at least one capacitor bank. The current-limiting surge suppressor includes a first current-limiting path and a second bypass path. A drain, when operable, dissipates the charge of the at least one capacitor bank. The drive is operable in response to the higher voltage output from the at least one capacitor bank.

公开(公告)号：US11976525B2

公开(公告)日：2024-05-07

申请号：US18453476

申请日：2023-08-22

申请人： Halliburton Energy Services, Inc.

发明人： John Fischer ,  David Kubricht ,  Richard Cheatham ,  Jeffrey Pollack ,  Chad Lawman ,  David Todd ,  Tyler Nolen ,  John J. Crosetto

IPC分类号： G05B19/04 ,  E21B4/04 ,  E21B7/02 ,  E21B21/08 ,  E21B43/26 ,  F04B17/03 ,  F04B17/06 ,  F04D13/06 ,  H02B1/52 ,  H02B5/00 ,  H02J13/00 ,  H02K7/18 ,  H02P27/04 ,  E21B4/02 ,  H02K9/00 ,  H05K5/02 ,  H05K7/20

CPC分类号： E21B21/08 ,  E21B4/04 ,  E21B7/022 ,  E21B43/2605 ,  E21B43/2607 ,  F04B17/03 ,  F04B17/06 ,  F04D13/0686 ,  H02B1/52 ,  H02B5/00 ,  H02J13/00036 ,  H02K7/18 ,  H02P27/04 ,  E21B4/02 ,  F05B2220/706 ,  F05B2240/941 ,  H02K9/00 ,  H05K5/0213 ,  H05K7/20918

摘要： Certain embodiments of the present application relate to a variable frequency drive (VFD) cabin for a pump configuration including a mobile trailer on which the VFD cabin is to be mounted. The VFD cabin generally includes a medium-voltage VFD and a ventilation system. In certain embodiments, the ventilation system is configured to generate an overpressure condition within the cabin to discourage the entry of dust and debris into the cabin. In certain embodiments, one or more components of the medium-voltage VFD are coupled to the floor of the cabin via a vibration damping system. In certain embodiments, the VFD cabin may be directly coupled to a chassis of the mobile trailer without an intervening suspension being provided between the VFD cabin and the chassis.

公开(公告)号：US20240136962A1

公开(公告)日：2024-04-25

申请号：US18546558

申请日：2022-03-29

申请人： NIDEC PSA EMOTORS

发明人： Gang YANG ,  Radu FRATILA

IPC分类号： B60W10/08 ,  B60W10/26 ,  H02P21/22 ,  H02P23/14 ,  H02P27/04

CPC分类号： B60W10/08 ,  B60W10/26 ,  H02P21/22 ,  H02P23/14 ,  H02P27/045

摘要： The invention relates to a method for selecting a chopping frequency for application thereof to an inverter controlling a rotating electric machine, wherein the chopping frequency is chosen from among multiple predetermined frequencies depending on the position, in a map, of a current operating point of the assembly formed by the electric machine and the inverter, said map having at least the rotational speed (N) of the electric machine or the frequency (Fe) of the electric current applied thereto as parameter. In at least part of the map, the chopping frequency is furthermore chosen based on a parameter representative of a thermal condition of the electronic switches contained in the inverter. The invention furthermore relates to a method for controlling a corresponding inverter, and to a device implementing this method. The invention is preferably applied to an electric motor vehicle.

公开(公告)号：US20240125836A1

公开(公告)日：2024-04-18

申请号：US18482293

申请日：2023-10-06

申请人： dormakaba Deutschland GmbH

发明人： Dennis Böse

IPC分类号： G01R29/18 ,  G01R25/00 ,  H02P27/04

CPC分类号： G01R29/18 ,  G01R25/005 ,  H02P27/047

摘要： A method for determining at least one property of a rotational movement of a three-phase rotary current machine in generator operation, with an electrical parameter for a phase voltage of the relevant phase of the three-phase alternating voltage of the rotary current machine generated in generator operation being continuously recorded metrologically for each of the three phases. Three electrical parameter pairs are formed from the three electrical parameters, whereby the three electrical parameter pairs respectively include electrical parameters of a first and a second phase, electrical parameters of the second phase and a third phase, and electrical parameters of the third phase and the first phase. A sign of a difference between the electrical parameters of each parameter pair is continuously determined. The property of the rotational movement is determined from change times corresponding to times of immediately successive sign changes of the differences between the three parameter pairs.

公开(公告)号：US11906611B2

公开(公告)日：2024-02-20

申请号：US17889014

申请日：2022-08-16

申请人： Lutron Technology Company LLC

发明人： James P. Steiner

IPC分类号： H05K7/20 ,  G01S13/04 ,  G01S13/88 ,  F04D27/00 ,  F04D25/08 ,  F24F11/65 ,  F24F7/007 ,  H02P27/04 ,  G01S13/56 ,  F04D29/66 ,  G01S13/34 ,  F24F110/20 ,  H02P6/00 ,  F24F120/10 ,  F24F110/10

CPC分类号： G01S13/04 ,  F04D25/088 ,  F04D27/001 ,  F04D27/004 ,  F04D29/661 ,  F24F7/007 ,  F24F11/65 ,  G01S13/343 ,  G01S13/56 ,  G01S13/88 ,  H02P27/04 ,  F05B2260/96 ,  F05B2270/334 ,  F05B2270/805 ,  F05D2270/334 ,  F24F2110/10 ,  F24F2110/20 ,  F24F2120/10 ,  H02P6/00

摘要： A control device for a ceiling fan may have a motor drive circuit configured to control a rotational speed of a motor of the ceiling fan, an occupancy sensing circuit, and a control circuit configured to adjust the rotational speed of the motor in response to a detected occupancy or vacancy condition. The control circuit may process the signals generated by the occupancy sensing circuit to eliminate the effects of vibrations and/or wobbling of the ceiling fan. The control circuit may control the motor drive circuit to adjust the rotational speed of the motor in response to an accelerometer to minimize the magnitude of the wobble of the ceiling fan. The control circuit may be configured to learn a preferred rotational speed for the motor. The control circuit may also be configured to control the rotational speed of the motor to affect a thermal comfort level of an occupant.

公开(公告)号：US11901847B2

公开(公告)日：2024-02-13

申请号：US17437531

申请日：2020-03-11

申请人： Hitachi Astemo, Ltd.

发明人： Hiroto Saotome ,  Masaki Hano

IPC分类号： H02P27/04 ,  H02P27/08 ,  H02P21/22

CPC分类号： H02P27/08 ,  H02P21/22

摘要： A controller in a motor control device includes an integral operation unit 606A (608A) that performs an arithmetic operation for a d(q)-axis integrated value Id** (Iq**) through integral control performed on a d(q)-axis current deviation ΔId (ΔIq) and is configured to perform an arithmetic operation for a d(q)-axis voltage command value for controlling an output voltage of an inverter of a three-phase brushless motor. The controller further includes a limit value arithmetic operation unit 606C (608C) that performs an arithmetic operation for d(q)-axis integration upper and lower limit values Idmax (Iqmax) and Idmin (Iqmin) on the basis of a power source voltage of the inverter and the like and an integration limiting unit 606D (608E) that limits Id** (Iq**) within a predetermined range defined by the d(q)-axis integration upper and lower limit values.

公开(公告)号：US11894788B2

公开(公告)日：2024-02-06

申请号：US17088936

申请日：2020-11-04

申请人： Builtrite, LLC

发明人： Karl Eric Johnson ,  Mitchell Lloyd Houle

IPC分类号： H02P25/04 ,  H02P27/04 ,  B65G47/90 ,  F15B13/10 ,  F04B17/03 ,  G06F3/02

CPC分类号： H02P27/04 ,  B65G47/905 ,  F15B13/10 ,  F04B17/03 ,  G06F3/0205

摘要： A material handler comprises a motor, an interface device, and a controller. The controller is configured to receive an input from the interface device and can include a variable frequency drive (VFD). The controller provides a variable frequency drive (VFD) signal to the motor to control movement of one or more components of the material handler. If the interface device is inactive for a predetermined amount of time, the controller adjusts a frequency of the VFD signal from an operating frequency to a standby frequency with the standby frequency being lower than the operating frequency. Adjusting the frequency from the operating frequency to the standby frequency can include adjusting the frequency of the VFD signal to one or more intermediate frequencies. When adjusting the frequency of the VFD signal, the controller can skip at least one frequency or range of frequencies, for example, to avoid undesirable operating characteristics.

公开(公告)号：US11888417B2

公开(公告)日：2024-01-30

申请号：US17710726

申请日：2022-03-31

申请人： Huawei Digital Power Technologies Co., Ltd.

发明人： Zhaoxue Cui ,  Wei Zhang ,  Ningbo Feng

IPC分类号： H02P27/04 ,  H02P27/06 ,  H03K3/037

CPC分类号： H02P27/06 ,  H03K3/037

摘要： An energy conversion apparatus, a motor, a power system, and a vehicle are provided. The energy conversion apparatus may integrate a motor drive function by using a three-phase bridge arm converter and a motor winding, and integrate an alternating current charging function by using a two-phase two-bridge-arm converter and a transformer. In this way, the energy conversion apparatus can integrate the charging function and the motor drive function. When the energy conversion apparatus is installed on an electric vehicle, a vehicle integration level can be increased, a structure layout of the electric vehicle can be simplified, and costs and a volume of the electric vehicle can be reduced.

公开(公告)号：US20240011380A1

公开(公告)日：2024-01-11

申请号：US18371262

申请日：2023-09-21

申请人： Halliburton Energy Services, Inc.

发明人： John Fischer ,  John J. Crosetto ,  David Kubricht ,  Richard Cheatham ,  Jeffrey Pollack ,  Chad Lawman ,  David Todd ,  Tyler Nolen

IPC分类号： E21B43/26 ,  H02J13/00 ,  F04B17/03 ,  F04B17/06 ,  F04D13/06 ,  H02B1/52 ,  H02B5/00 ,  H02K7/18 ,  H02P27/04

CPC分类号： E21B43/2607 ,  H02J13/00036 ,  E21B43/2605 ,  F04B17/03 ,  F04B17/06 ,  F04D13/0686 ,  H02B1/52 ,  H02B5/00 ,  H02K7/18 ,  H02P27/04 ,  F05B2220/706 ,  F05B2240/941

摘要： An electric driven hydraulic fracking system is disclosed. A pump configuration that includes the single VFD, the single shaft electric motor, and the single hydraulic pump that is mounted on the single pump trailer. A power distribution trailer distributes the electric power generated by the power generation system at the power generation voltage level to the single VFD and converts the electric power at a power generation voltage level to a VFD voltage level and controls the operation of the single shaft electric motor and the single hydraulic pump. The power distribution trailer converts the electric power generated by the power generation system at the power generation level to an auxiliary voltage level that is less than the power generation voltage level. The power distribution trailer distributes the electric power at the auxiliary voltage level to the single VFD that controls an operation of the of the auxiliary systems.