公开(公告)号：US11512885B2

公开(公告)日：2022-11-29

申请号：US16338974

申请日：2017-10-05

申请人： Johnson Controls Technology Company

发明人： David F. Saylor

IPC分类号： F25B49/02 ,  H02P5/74 ,  H01F30/04 ,  F04C28/08 ,  F04B49/20 ,  F04B41/00 ,  H02P27/04 ,  H02P1/58 ,  F04C28/02 ,  F04B49/06 ,  F04B49/02 ,  F04D25/06 ,  F04D15/00 ,  F04D27/00 ,  F04D27/02 ,  H02P27/06 ,  H02P27/00 ,  H02P1/54 ,  F04B35/04 ,  H02P27/16

摘要： Embodiments of the present disclosure relate to a refrigeration system that includes a compressor configured to circulate refrigerant along a refrigerant loop, a motor configured to drive the compressor, and a variable speed drive coupled to the motor and configured to supply power to the motor. The variable speed drive includes a primary winding of a step down transformer coupled to an alternating current (AC) power source, a first secondary winding of the step down transformer, where the first secondary winding is configured to supply power at a variable supplied voltage to the motor when the motor operates below a threshold voltage, and a second secondary winding of the step down transformer, where the second secondary winding is configured to supply power at a fixed supplied voltage when the motor operates at or above the threshold voltage.

公开(公告)号：US10903764B2

公开(公告)日：2021-01-26

申请号：US16182130

申请日：2018-11-06

申请人： Kohler Co.

发明人： Isaac S. Frampton ,  Adam Larson

IPC分类号： H02P5/00 ,  H02P5/74 ,  H02M5/27 ,  H02K19/26 ,  H02P9/42 ,  B60L1/00 ,  H02P27/08 ,  H02P27/16 ,  H02P9/14 ,  H02J7/00 ,  H02J7/02 ,  H02J7/14 ,  B60L58/10 ,  H02J7/24 ,  H02P6/16 ,  A01D34/64 ,  A01D34/43 ,  B60L58/40 ,  H02J3/38 ,  B60L50/60

摘要： An apparatus includes a first inverter circuit and a second inverter circuit. The first invertor circuit is configured to couple an alternator and a load device to deliver a driving signal from the alternator to the load device. The second invertor circuit is configured to couple the alternator to the load device to deliver a driving signal from the alternator to the load device and configured to couple a battery to the alternator to deliver a charging signal from the alternator the battery.

公开(公告)号：US20200169202A1

公开(公告)日：2020-05-28

申请号：US16620432

申请日：2018-06-05

申请人： LG Electronics Inc.

发明人： Kwang Sik KIM ,  Chungill LEE ,  Seokhee CHO

IPC分类号： H02P21/00 ,  H02P27/08 ,  H02P27/16 ,  H02P21/18 ,  H02P21/20 ,  H02P21/22 ,  H02M7/49

摘要： The present invention relates to a motor driving apparatus and, more specifically, to a motor driving apparatus for selectively performing identical phase overmodulation compensation or minimum distance overmodulation compensation according to a command speed when an output voltage command value of an inverter indicates an overmodulation voltage.

公开(公告)号：US20190043677A1

公开(公告)日：2019-02-07

申请号：US15692614

申请日：2017-08-31

申请人： ROCKWELL AUTOMATION TECHNOLOGIES, INC.

发明人： Michael Lee Gasperi ,  Andrew John Jaap

IPC分类号： H01H9/56 ,  H02P27/16

CPC分类号： H01H9/56 ,  H01H9/563 ,  H02P1/26 ,  H02P27/16

摘要： A PCB motor controller comprises relays mounted on a PCB and interconnected to power traces in or on the PCB to receive incoming three-phase power and to output three-phase power to a motor. Control power traces in or on the PCB connect the relays to control circuitry, also mounted on the PCB. A power supply is mounted on the PCB and connected to the control circuitry to provide power for its operation and for switching of the relays. The relays are switched in accordance with a point-on-wave (POW) switching scheme, allowing for the use or relays and the PCB, which may not otherwise be suitable for motor control applications.

公开(公告)号：US10197052B2

公开(公告)日：2019-02-05

申请号：US15145888

申请日：2016-05-04

申请人： LITTELFUSE, INC.

发明人： Sheldon Felix

IPC分类号： H02P27/16 ,  F04B49/20 ,  F04D25/16 ,  H05K7/20

摘要： An apparatus may include an enclosure and a variable frequency drive (VFD) assembly disposed within the enclosure, and comprising at least one VFD. The apparatus may also include a heat sink thermally coupled to the VFD assembly, and a fan system disposed adjacent the VFD assembly and including at least one fan arranged to direct air flow to the heat sink and at least one fan to direct air flow from the heat sink.

公开(公告)号：US20180138842A1

公开(公告)日：2018-05-17

申请号：US15812192

申请日：2017-11-14

申请人： Johnson Electric S.A.

发明人： Chiping SUN ,  Xiuwen YANG ,  Shinghin YEUNG ,  Shujuan HUANG ,  Yunlong JIANG

IPC分类号： H02P6/182 ,  H02P6/30 ,  H02P27/06 ,  H02P27/16 ,  H02P6/08 ,  H02P6/26

CPC分类号： H02P6/182 ,  G01D5/142 ,  G01D5/145 ,  H02M7/06 ,  H02P6/085 ,  H02P6/16 ,  H02P6/26 ,  H02P6/30 ,  H02P23/24 ,  H02P25/022 ,  H02P25/024 ,  H02P27/06 ,  H02P27/16

摘要： A motor and a driving circuit thereof are provided. The motor driving circuit includes a controllable bidirectional AC switch connected with a winding of the motor between two terminals of an AC power supply; and first and second position sensors. The first position sensor and the second position sensor are respectively configured to detect positions of magnetic poles of the rotor. The first position sensor and the second position sensor output magnetic pole position signals having opposite phases when detecting a same magnetic pole of the rotor. At a rest position of the motor, the first position sensor and the second position sensor are respectively arranged with an advance angle with respect to a connection line crossing centers of opposite magnetic poles of the rotor, to make the motor have large starting torque.

公开(公告)号：US20180108472A1

公开(公告)日：2018-04-19

申请号：US15787254

申请日：2017-10-18

申请人： Hubbell Incorporated

发明人： Kenneth Edward Pagenkopf

IPC分类号： H01F27/42 ,  H01F27/28 ,  H01F17/06 ,  H01F27/24 ,  H01F27/255 ,  H02M1/12 ,  H02P27/16 ,  H03H7/01

CPC分类号： H01F27/42 ,  H01F17/062 ,  H01F27/24 ,  H01F27/255 ,  H01F27/28 ,  H01F2017/0093 ,  H02M1/126 ,  H02M2001/123 ,  H02P27/16 ,  H03H7/0115

摘要： Enhanced common mode current reduction in three-phase inductors, transformers, and motor drive systems. A motor drive system includes an iron core transformer, a common-mode transformer coupled to a three-phase motor, and a variable speed drive providing a three-phase power signal to drive the three-phase motor, and coupled to the iron core transformer and the common mode transformer. The system includes a DC bus having a DC bus midpoint. The common-mode transformer includes a toroidal ferrite core, a first choke winding, a second choke winding, a third choke winding, a first coupling winding collocated with the first choke winding, a second coupling winding collocated with the second choke winding, and a third coupling winding collocated with the third choke winding. The first, second, and third coupling windings are coupled in parallel to one another. The coupled windings couple a neutral point of the iron core transformer to the DC bus midpoint.

公开(公告)号：US20170310217A1

公开(公告)日：2017-10-26

申请号：US15517160

申请日：2015-09-15

申请人： IDT EUROPE GmbH

发明人： Chris YOUNG

IPC分类号： H02M3/158 ,  H02M7/49 ,  H02M5/453 ,  H02M5/27 ,  H02P27/16 ,  H02M1/00

CPC分类号： H02M3/158 ,  H02M3/1584 ,  H02M5/271 ,  H02M5/453 ,  H02M7/49 ,  H02M2001/0032 ,  H02P27/16 ,  Y02B70/16

摘要： A multi-phase power converter comprising a plurality of phases for generating an output voltage according to a switching signal and an input voltage, each phase of the plurality of phases comprising a switching element and inductance; wherein the plurality of phases is connected to a common star point, wherein an output capacitor is connected to the common star point. The phases of the multi-phase power converter are not identical in terms of their inductance. Therefore, at least one phase may be optimized for a low current such that, in low power operation, said at least one phase is optimal for lower current levels.

公开(公告)号：US20160336893A1

公开(公告)日：2016-11-17

申请号：US15145888

申请日：2016-05-04

申请人： LITTELFUSE, INC.

发明人： Sheldon Felix

IPC分类号： H02P27/16 ,  H02K11/33 ,  H02K9/22 ,  H02K9/04

CPC分类号： F04B49/20 ,  F04D25/166 ,  H05K7/20909

摘要： An apparatus may include an enclosure and a variable frequency drive (VFD) assembly disposed within the enclosure, and comprising at least one VFD. The apparatus may also include a heat sink thermally coupled to the VFD assembly, and a fan system disposed adjacent the VFD assembly and including at least one fan arranged to direct air flow to the heat sink and at least one fan to direct air flow from the heat sink.

摘要翻译： 装置可以包括外壳和设置在外壳内的变频驱动器（VFD）组件，并且包括至少一个VFD。 该设备还可以包括热耦合到VFD组件的散热器和与VFD组件相邻设置的风扇系统，并且包括至少一个风扇，其布置成将空气流引导到散热器和至少一个风扇以引导来自 散热器。

公开(公告)号：US08947030B2

公开(公告)日：2015-02-03

申请号：US13729266

申请日：2012-12-28

申请人： Eaton Corporation

发明人： Yakov Lvovich Familiant ,  Zeljko Radomir Jankovic ,  Bruno Patrice-Bernard Lequesne ,  Vijay Bhavaraju

IPC分类号： H02P27/16

CPC分类号： H02P27/16 ,  H02M5/293 ,  H02M2005/2932

摘要： A load control device to control current flow to an AC load includes a circuit having line-side switches and floating-neutral side switches, along with a controller connected to the circuit that is programmed to control the circuit so as to cause each of the line-side switches and each of the floating-neutral side switches to switch between an On condition or an Off condition to selectively operate the circuit in an active mode and a free-wheeling mode. A full phase voltage is provided to the AC load during the active mode and a zero voltage is provided to the AC load during the free-wheeling mode. The controller applies a modulating function to the circuit, so as to modulate a supply voltage to control a frequency and an average of a load voltage present across terminals of the AC load, thereby enabling variable frequency operation of the AC load.

摘要翻译： 用于控制到AC负载的电流的负载控制装置包括具有线路侧开关和浮动中性侧开关的电路，以及连接到电路的控制器，该控制器被编程以控制电路，以使每个线路 侧开关和每个浮动中性侧开关在“开”状态或“关”状态之间切换，以选择性地以活动模式和续流模式操作电路。 在有功模式期间，向AC负载提供全相电压，并且在续流模式期间向AC负载提供零电压。 控制器对电路施加调制功能，以便调制电源电压以控制交流负载端子之间存在的负载电压的频率和平均值，从而实现AC负载的可变频率操作。