公开(公告)号：US20180191288A1

公开(公告)日：2018-07-05

申请号：US15740152

申请日：2016-05-26

申请人： Hitachi-Johnson Controls Air Conditioning, Inc.

发明人： Dongsheng LI ,  Yasuo NOTOHARA ,  Yuuji YAMAMOTO

IPC分类号： H02P27/08 ,  H02P27/04 ,  H02P27/12 ,  H02P6/06 ,  H02P6/185

CPC分类号： H02P27/085 ,  H02P6/06 ,  H02P6/185 ,  H02P21/14 ,  H02P27/045 ,  H02P27/12

摘要： An inverter, motor drive device and freezing device, with which it is possible to effectively suppress current beats in the event of over-modulation without requiring additional circuits. This motor driving device includes: a rectifier circuit that converts the AC voltage from an AC power supply into a DC voltage; a smoothing capacitor that smoothes the DC voltage output from the rectifier circuit; an inverter circuit that converts the DC voltage output from the smoothing capacitor into an AC voltage; and a controller that reduces the current beat component by estimating, using a phase locked loop process, the frequency, phase and amplitude of the current beat component in the output current of the inverter circuit, and corrects the voltage command to the inverter circuit on the basis of the estimated frequency, phase and amplitude.

公开(公告)号：US10003293B2

公开(公告)日：2018-06-19

申请号：US13841766

申请日：2013-03-15

申请人： Andrew John Bartlik ,  Charles Thomas McLees, Jr.

发明人： Andrew John Bartlik ,  Charles Thomas McLees, Jr.

IPC分类号： H02P27/04 ,  H02P23/00

CPC分类号： H02P27/04 ,  H02P23/0004

摘要： Systems and methods for driving a motor are provided. One implementation of a drive system comprises a user interface, a variable speed drive, and a controller. The user interface enables a user to select an operating frequency set point and an operating voltage set point. The operating frequency set point is selected from a range of frequency set points and the operating voltage set point is selected from a range of voltage set points. The variable speed drive is configured to drive a motor at the selected operating frequency set point and selected operating voltage set point. The controller is configured to receive input from the user interface and control the operating frequency and operating voltage of the variable speed drive.

公开(公告)号：US09923505B2

公开(公告)日：2018-03-20

申请号：US14090365

申请日：2013-11-26

申请人： Regal Beloit America, Inc.

发明人： Yilcan Guzelgunler

IPC分类号： H02M7/49 ,  H02P23/20 ,  H02P21/20 ,  H02P27/04 ,  H02P21/00 ,  H02M1/38

CPC分类号： H02P27/04 ,  H02M2001/385 ,  H02P21/50

摘要： A system and method of controlling an electric motor using a motor drive controller are provided. The motor drive controller includes a rectifier configured to convert an AC input voltage to a DC voltage, a DC bus electrically coupled to the rectifier, an inverter electrically coupled to the DC bus and configured to generate an AC voltage to drive the electric motor, and a control unit. The control unit includes a sign calculation module configured to determine a polarity of each phase of a reference current command and a compensation module configured to generate a voltage compensation command signal using one of the determined polarities of the reference current command and a measured current, and one of a measurement of DC bus voltage and a constant DC bus voltage value, the voltage compensation signal compensating the drive controller to neutralize a deadtime effect.

公开(公告)号：US09919903B2

公开(公告)日：2018-03-20

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： B66D1/12 ,  H02P25/00 ,  H02P25/18 ,  B66D1/48 ,  H02P27/04

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.

公开(公告)号：US20180038622A1

公开(公告)日：2018-02-08

申请号：US15551654

申请日：2016-01-27

申请人： BSH HAUSGERAETE GMBH

发明人： Achim PAULDURO ,  Tommy BECKMANN ,  Axel WALTER ,  Moritz KLEIN

IPC分类号： F25B49/02 ,  H02P21/34 ,  F25B31/02 ,  H02P27/04 ,  F25B13/00 ,  H02P21/22 ,  H02P1/46

CPC分类号： F25B49/025 ,  F25B13/00 ,  F25B31/026 ,  F25B2600/024 ,  H02P1/46 ,  H02P21/00 ,  H02P21/22 ,  H02P21/34 ,  H02P27/04

摘要： A domestic refrigeration device and a method for operating a domestic refrigeration device. The domestic refrigeration device has a heat-insulated body with a coolable inner container which delimits a coolable interior provided for storing food. A coolant circuit is provided for cooling the coolable interior and includes a compressor and a field-oriented electric drive. The field-oriented electric drive has a field-oriented controller, a converter, and a permanently excited synchronous motor which is connected downstream of the converter and which is part of the compressor or is provided for driving the compressor.

公开(公告)号：US20180029673A1

公开(公告)日：2018-02-01

申请号：US15552353

申请日：2016-02-19

申请人： Nobuyoshi Morimoto

发明人： Nobuyoshi Morimoto

IPC分类号： B63B25/08 ,  B01D53/18 ,  H02P27/04 ,  B01D53/14 ,  F01K7/16 ,  F01K19/00

CPC分类号： B63B25/08 ,  B01D53/1418 ,  B01D53/1493 ,  B01D53/185 ,  B01D2252/1035 ,  F01K7/16 ,  F01K19/00 ,  F04B17/03 ,  F04B23/04 ,  F04B49/06 ,  F04B2203/0404 ,  H02P27/04

摘要： Oil tanker and or ore/oil carrier can take more good fuel oil consumption through cargo oil handling by usage of electric motor driven system instead of steam turbine driven cargo pump system. Its merit is about 20%.

公开(公告)号：US09866207B2

公开(公告)日：2018-01-09

申请号：US15387270

申请日：2016-12-21

申请人： Renesas Electronics Corporation

发明人： Ryo Kanda ,  Tetsu Toda ,  Junichi Nakamura ,  Kazuyuki Umezu ,  Tomonobu Kurihara ,  Takahiro Nagatsu ,  Yasushi Nakahara ,  Yoshinori Kaya

IPC分类号： H02P27/04 ,  H03K3/356 ,  H01L29/78 ,  H01L29/06 ,  H01L29/40 ,  H03K17/567

CPC分类号： H03K3/356182 ,  H01L29/0696 ,  H01L29/404 ,  H01L29/408 ,  H01L29/7823 ,  H01L2224/48139 ,  H01L2224/48247 ,  H01L2224/4903 ,  H02P27/06 ,  H03K5/24 ,  H03K17/567 ,  H03K17/6872 ,  H03K19/018521

摘要： A driver integrated circuit includes a bootstrap circuit (BSC) configured to output a boot power supply voltage (VB) based on a first power supply voltage, the boot power supply voltage being higher than the first power supply voltage; a level shift circuit (LSC) configured to output an output pulse signal based on an input pulse signal and the boot power supply voltage; a high side driving circuit (HSU) configured to output a high side driving voltage based on the boot power supply voltage and the output pulse signal, wherein the bootstrap circuit includes a sense metal oxide semiconductor (MOS) transistor and a boot MOS transistor, wherein the sense MOS transistor includes a depression-type transistor.

公开(公告)号：US09853586B2

公开(公告)日：2017-12-26

申请号：US14801420

申请日：2015-07-16

申请人： MAKITA CORPORATION

发明人： Takuya Kusakawa ,  Goshi Ishikawa ,  Motohiro Omura

IPC分类号： H02P27/04 ,  H02P27/06 ,  H02P29/024 ,  H02J7/00

CPC分类号： H02P27/04 ,  H02J7/0029 ,  H02J7/0063 ,  H02P27/06 ,  H02P29/0241 ,  H02P29/027

摘要： A motor driven appliance comprises a battery, a motor, at least one switch, a control unit, an abnormality detection unit, a determination unit, and a processing unit. The at least one switch comprises an operation switch. The control unit controls driving of the motor by controlling power supply from the battery to the motor when the operation switch is turned on. The abnormality detection unit detects abnormality of the appliance. The determination unit determines whether the detected abnormality is a first type abnormality that can be cleared when the operation switch is switched from on to off, or is a second type abnormality that cannot be cleared even if the operation switch is merely switched from on to off. The processing unit is configured to perform a specific process when it is determined that the detected abnormality is the second type abnormality.

公开(公告)号：US09831807B2

公开(公告)日：2017-11-28

申请号：US15420669

申请日：2017-01-31

申请人： JTEKT CORPORATION

发明人： Hiroshi Kitamoto

IPC分类号： H02P27/04 ,  H02P6/14 ,  B62D5/04 ,  H02P6/12 ,  H02P29/00 ,  H02M1/08 ,  H03K17/06

CPC分类号： H02P6/14 ,  B62D5/046 ,  B62D5/0484 ,  B62D5/0487 ,  H02M1/08 ,  H02P6/12 ,  H02P29/00 ,  H03K17/063

摘要： A motor control apparatus includes an inverter, a driver, a negative voltage circuit, a voltage dividing circuit, and a detection unit. The inverter includes an upper-arm switching element and a lower-arm switching element to supply a voltage of a node between the upper-arm switching element and the lower-arm switching element to a motor as a phase voltage. The driver applies a first voltage or a second voltage to the upper-arm switching element to control and turn the upper-arm switching element on and off. The negative voltage circuit supplies a voltage lower than the voltage of the node to the driver as the second voltage. The voltage dividing circuit performs voltage division between the negative voltage circuit and a negative power supply. The detection unit outputs a signal based on a voltage resulting from the voltage division by the voltage dividing circuit.

公开(公告)号：US09819289B2

公开(公告)日：2017-11-14

申请号：US15420698

申请日：2017-01-31

申请人： DENSO CORPORATION ,  ASMO CO., LTD.

发明人： Ryunosuke Akimatsu ,  Toshihiro Uchida

IPC分类号： H02P27/04 ,  H02P6/16 ,  H02P27/08 ,  H02K1/27

CPC分类号： H02P6/16 ,  H02K1/2786 ,  H02P6/157 ,  H02P27/08 ,  H02P29/50

摘要： In a control apparatus, a magnetic flux information acquiring unit acquires magnetic flux information of magnetic poles of a rotating electric machine. A fundamental setting unit sets a fundamental command value for supplying a fundamental current to a winding of the rotating electric machine. A harmonic setting unit sets, based on the magnetic flux information acquired by the magnetic flux information acquiring unit, a harmonic command value for supplying a reduction current to the winding. The reduction current is a harmonic current for reducing variation in a radial electromagnetic force acting on a rotor of the rotating electric machine. An operating unit operates, based on the fundamental command value set by the fundamental setting unit and the harmonic command value set by the harmonic setting unit, an electric power converter to supply the winding with a drive current that is obtained by superimposing the reduction current on the fundamental current.