公开(公告)号：US11996704B2

公开(公告)日：2024-05-28

申请号：US17523476

申请日：2021-11-10

申请人： Samsung Electronics Co., Ltd.

发明人： Beomwoo Gu ,  Jaehyun Park ,  Chongmin Lee ,  Bohwan Choi

IPC分类号： H02J50/12 ,  H01F27/42

CPC分类号： H02J50/12 ,  H01F27/42 ,  H02J2310/22

摘要： A wireless power receiver receiving power from a wireless power transmitter is provided. The receiver includes a resonance circuit, a rectifier circuit, and a driver circuit. The resonance circuit includes first and second coils and a first capacitor. The rectifier circuit includes first and second rectifier circuits. The first rectifier circuit includes first through fourth MOSFETs. Sources of the first and second MOSFETs are connected to ends of a resonator including the first coil and the first capacitor. Sources of the third and fourth MOSFETs are connected to ground. The driver circuit is connected to gates of the first through fourth MOSFETs, When the driver circuit switches off the first and second MOSFETs and switches on the third and fourth MOSFETs, as currents are induced in the resonator and the second coil, the resonance circuit receives the wireless power, and the current induced in the second coil is rectified by the second rectifier circuit.

公开(公告)号：US11870257B1

公开(公告)日：2024-01-09

申请号：US17334453

申请日：2021-05-28

申请人： Pacific Transformer Corporation

发明人： Vahid Zomorrodian

IPC分类号： H02J3/14 ,  H01F38/14 ,  H01F27/42

CPC分类号： H02J3/14 ,  H01F27/42 ,  H01F38/14

摘要： An impedance control transformer assembly includes and/or may be coupled with a main transformer having a nominal impedance, the assembly configured to be coupled to an electrical source and a distribution load. The assembly includes actuatable bypass contactors that couple the main transformer in a series circuit to a high-Z transformer configured to establish a combined impedance that exceeds the nominal impedance. Also included is a current sensor coupled to an output of the main transformer and which detects power demand of the distribution load. At least one processor is coupled to the current sensor and the bypass contactors, and are configured to actuate the bypass contactors responsive to detection of a predetermined power demand. When the distributed loads require less than the predetermined power demand, the processor automatically opens the bypass contactors to couple the main and high-Z transformers, which establishes a combined, increased impedance and a low power mode that decreases power consumption of the impedance control transformer assembly.

公开(公告)号：US20240006114A1

公开(公告)日：2024-01-04

申请号：US18035132

申请日：2020-11-05

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Junyoul Lim

IPC分类号： H01F27/29 ,  H02J50/12 ,  H02J50/40 ,  H01F27/42

CPC分类号： H01F27/29 ,  H02J50/12 ,  H02J50/402 ,  H01F27/42

摘要： The embodiments relate to high-efficiency resonant inductance coupling type wireless power transfer. In one embodiment, there proposes an apparatus for wireless power transferring, comprising: a first terminal and a second terminal; a combined coil coupled between the first terminal and the second terminal, wherein the combined coil including a first sub coil having a first end and a second end and a second sub coil having a first end and a second end, the first end of the first sub coil is coupled to the first terminal, the second end of the first sub coil is coupled to the first end of the second sub coil; a first filter coupled in series with the first sub coil at the first end or the second end of the first sub coil; and a second filter coupled between the first end of the second sub coil and the first terminal.

公开(公告)号：US11764779B2

公开(公告)日：2023-09-19

申请号：US17893980

申请日：2022-08-23

申请人： BEIJING ORIENT INSTITUTE OF MEASUREMENT AND TEST

发明人： Xiaoding Huang ,  Yazhen Tong ,  Jianzhen Cai ,  Zhongwei Wang ,  Pan Pan ,  Yi Sun ,  Shuqiang Wang ,  Jiaolan Yu ,  Qianjuan Wang ,  Jingjing Li ,  Xuwei Hou

IPC分类号： G05F1/46 ,  H01C1/16 ,  H01F27/42 ,  H03H11/28 ,  H03K17/92

CPC分类号： H03K17/92 ,  G05F1/46 ,  H01C1/16 ,  H01F27/42 ,  H03H11/28

摘要： A four-terminal-pair AC quantum resistance dissemination bridge and related methods are provided. The bridge includes: a supply transformer IVD1, a Kelvin branch A1, a Wagner branch A0, the first and second current sources A2, A3, an injection inductive voltage divider A4, a ratio transformer IVD2, the first and second four-terminal AC resistor connection points Z1, Z2, chokes H, and null indicators D. An isolated inductive winding LO is wound along the ratio transformer IVD2 and supplies excitation current to primary winding of injection inductive voltage divider A4 to avoid the mutual influence among various balance networks and rapid balance of the bridge can be realized. By changing turn ratio of primary winding L3 and secondary winding L4 of the second inductive voltage divider T2, the phase shift can be realized through only one set of capacitors for imaginary part error compensation, the bridge with multiple frequency points can be obtained.

公开(公告)号：US20190190254A1

公开(公告)日：2019-06-20

申请号：US16327809

申请日：2016-08-23

申请人： ABB Schweiz AG

发明人： Urmil PARIKH ,  Michael STANEK

IPC分类号： H02H9/00 ,  H02H1/00 ,  H02H7/04 ,  H01F27/42 ,  H01H9/56

CPC分类号： H02H9/002 ,  H01F27/42 ,  H01H9/56 ,  H02H1/0092 ,  H02H3/06 ,  H02H7/04

摘要： In aspects, the present invention provides a method for phase controlled energizing of a power transformer (130). The method comprises acquiring electrical voltage signal from a voltage sensing device (160, 170) connected to the power transformer when a circuit breaker (140) disconnects the power transformer from a power source (110). Determining a first characterizing data in the voltage signal within a pre-determined set of cycles at about an opening operation of the circuit breaker and determining a second characterizing data within the pre-determined set of cycles in the voltage signal subsequent to the opening operation of the circuit breaker. Estimating a level of magnetization of the core of the power transformer based on at least one of second characterizing data, and the first characterizing data and the second characterizing data. Operating the circuit breaker at a determined instant of switching based on the estimated level of magnetization for a phase controlled energizing of the power transformer by the circuit breaker.

公开(公告)号：US20180350514A1

公开(公告)日：2018-12-06

申请号：US15535811

申请日：2015-11-25

申请人： MITSUBISHI ELECTRIC CORPORATION

发明人： Koji NAKAJIMA ,  Takashi KUMAGAI ,  Yuji SHIRAKATA ,  Yujiro KIDO

IPC分类号： H01F27/38 ,  H02M3/335 ,  H02M7/00 ,  H05K1/02 ,  H05K1/11 ,  H01F27/42 ,  H01F27/28 ,  H01F27/40

CPC分类号： H01F27/38 ,  H01F27/22 ,  H01F27/2804 ,  H01F27/2876 ,  H01F27/40 ,  H01F27/42 ,  H01F30/10 ,  H01F2027/2809 ,  H01F2027/2819 ,  H01F2027/408 ,  H02M3/33507 ,  H02M3/337 ,  H02M7/003 ,  H05K1/0298 ,  H05K1/115

摘要： An insulation type step-down converter includes first and second step-down transformers each of which includes an input-side coil and an output-side coil. First, second, third, and fourth rectifier elements are connected in series with first, second, third, and fourth series coils, respectively, the first, second, third, and fourth series coils each having the output-side coil of the first step-down transformer and the output-side coil of the second step-down transformer connected in series. The first to fourth series coils are connected to smoothing coils. The connection is such that electric currents flow simultaneously only in one of the first and second series coils and one of the third and fourth series coils in an alternate manner, and electric currents flowing simultaneously in one of the first and second series coils and one of the third and fourth series coils are opposite in direction to each other.

公开(公告)号：US20180348275A1

公开(公告)日：2018-12-06

申请号：US15614293

申请日：2017-06-05

申请人： Hamilton Sundstrand Corporation

发明人： Frank J. Ludicky

IPC分类号： G01R29/08 ,  G01F1/58 ,  G01F1/60 ,  H01F27/28 ,  H01F7/06 ,  H01F27/42 ,  H02M7/02

CPC分类号： G01R29/0878 ,  G01F1/586 ,  G01F1/60 ,  H01F7/064 ,  H01F27/28 ,  H01F27/42 ,  H02M7/02 ,  H04Q9/00

摘要： A sensor control arrangement may comprise a host controller, a remote sensor interface, a power/data bus extending between the host controller and the remote sensor interface, and an electromagnetic sensor configured to receive an AC signal from the host controller via the power/data bus, and send an a sensor signal to the remote sensor interface via the power/data bus.

公开(公告)号：US20180268981A1

公开(公告)日：2018-09-20

申请号：US15988407

申请日：2018-05-24

申请人： ABB Schweiz AG

发明人： Yao Chen ,  Niya Chen ,  Rongrong Yu

IPC分类号： H01F27/08 ,  H01F27/33 ,  H01F27/12 ,  H01F27/42 ,  H05K7/20

CPC分类号： H01F27/085 ,  G05B13/021 ,  H01F27/08 ,  H01F27/12 ,  H01F27/33 ,  H01F27/42 ,  H05K7/20

摘要： One embodiment of the present application provides a method for obtaining a first data set representing operational cost related parameters specific to the power equipment and its cooling system forecasted for a series of time intervals of present load cycle in consideration of a second data set representing operational condition related parameters for the power equipment forecasted for a series of time intervals of present load cycle; in consideration of the parameters represented by the first data set, through knowledge-based predetermined numerical and/or logical linkages, establishing a third data set representing cooling capacity parameters for the cooling system at the series of time intervals of the present load cycle according to criteria for operational cost optimization of the power equipment and its cooling system for the present load cycle; and in the present load cycle, controlling the cooling system to operate at the cooling capacity parameters at the series of time intervals represented by the established third data set.

公开(公告)号：US10062502B2

公开(公告)日：2018-08-28

申请号：US15372507

申请日：2016-12-08

申请人： Siemens Aktiengesellschaft

发明人： Peter Hamberger

IPC分类号： G05F7/00 ,  H01F27/42 ,  G05F3/08 ,  H01F27/245

CPC分类号： H01F27/42 ,  G05F3/08 ,  H01F27/245

摘要： A circuit arrangement for compensation of a DC component in a transformer, wherein the transformer includes a winding arrangement connected via connecting lines to a power system for transporting electrical energy, and includes a neutral point connected to earth, where the circuit arrangement includes a transductor circuit arranged in a current path that connects a connection point situated on a node-free portion of the connection line to earth, a control and regulation device that controls the transductor circuit via a control signal and to which is fed, on the input side, a signal provided by a detection device with respect to a size and direction of the DC component to be compensated.

公开(公告)号：US10060962B2

公开(公告)日：2018-08-28

申请号：US14675541

申请日：2015-03-31

申请人： The United States of America as represented by the Secretary of the Navy

发明人： Josue Kure ,  Timothy Gomez ,  Patrick Arvin

IPC分类号： H01F27/28 ,  G01R29/20 ,  G01R23/00 ,  G01R31/02 ,  H01F38/28 ,  H01F21/12 ,  H01F27/42 ,  H01F29/14

CPC分类号： G01R29/20 ,  G01R23/00 ,  G01R27/02 ,  G01R31/027 ,  G01R35/02 ,  H01F21/12 ,  H01F27/42 ,  H01F38/28 ,  H01F2029/143

摘要： A system and method for tuning a transformer is provided. A transformer fixture may connect a switching network to a plurality of inductors of a transformer. At least one computing device may calculate a target number of turns for a primary coil and a secondary coil of the transformer based on a frequency response of the transformer. The switching network may connect the inductors of the transformer together in a pattern that results in the primary coil and secondary coil having the target number of turns.