Plural Part Core Patents (Class 336/212)
  • Patent number: 10340071
    Abstract: The invention relates to a magnetic circuit (2) for carrying at least one coil (3), the circuit (2) comprising: at least one inner leg (6) and at least two outer legs (4), and a connecting part (7) for guiding the magnetic flux of the inner leg (6) towards each outer leg (4), none of the outer legs (4) having a gap width and the inner leg (6) being at least partially formed from at least one material having a relative magnetic permeability lower than that of the material(s) forming the outer legs.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: July 2, 2019
    Inventor: Richard Demersseman
  • Patent number: 10325712
    Abstract: In some embodiments, the instant invention involves an electrical system that at least includes: a three-phase inductor, including: a core, including: a plurality of core lamination pieces. having: a first core lamination piece and a second core lamination piece; where the first core lamination piece includes a plurality of first laminations that have a first shape and arranged in a first pattern to form a plurality of first differential mode gaps; where the second core lamination piece includes a plurality of second laminations that have a second shape and arranged a second pattern to form a plurality of second differential mode gaps; where the first pattern and the second pattern are distinct; where the first core lamination piece and the second core lamination piece are positioned at a particular orientation of the first pattern to the second pattern so that to increase a common mode inductance of the core.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: June 18, 2019
    Assignee: MTE Corporation
    Inventor: Todd A. Shudarek
  • Patent number: 10304601
    Abstract: In an embodiment, a magnetic body includes: multiple soft magnetic alloy grains 11, 12 each containing Fe, element L (where element L is Si, Zr or Ti), and element M (where Element M is an element other than Si, Zr, and Ti, and which oxidizes more easily than Fe); oxide films 21, 22 covering the soft magnetic alloy grains, respectively; a bonding material 30 constituted by an oxide that exists separately from the oxide films 21 (21A, 21B), 22 (22A, 22B); first bonds where adjacent soft magnetic alloy grains 11, 12 are bonded together via the oxide films 21, 22; and second bonds where adjacent soft magnetic alloy grains 11, 12 are bonded together via the bonding material 30, without the oxide films 21, 22 that respectively cover these grains making direct contact with each other.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: May 28, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Atsushi Tanada
  • Patent number: 10304619
    Abstract: An electronic component includes a circuit element, a body accommodating the circuit element therein, and a holder made of a metal plate and holding the circuit element. The circuit element includes an end portion extending out of the body from a side surface of the body. The end portion extends from the side surface of the body toward a bottom surface of the body. The holder has first and second side surface portions and a bottom surface portion facing the bottom surface of the body. The first and second side surface portions face the side surface of the body. The first and second side surface portions are disposed with respective gaps from the end portion of the circuit element such that the end portion of the circuit element is positioned between the first and second side surface portions. The bottom surface portion is connected to the first and second side surface portions. The end portion of the circuit element is fixed to the bottom surface portion.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: May 28, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Mutsuyasu Ohtsubo
  • Patent number: 10270344
    Abstract: A multiphase switching DC-DC converter generates an output voltage from an input voltage. The converter includes multiphase coupled inductors having lateral magnetic core and non-looping conductors. The currents in conductors of the inductors flow in opposite directions, and therefore, the coupled inductors are inversely coupled and have a relatively low resistance and relatively small core volume. The reduced resistance of the inductor windings combined with smaller volume of magnetic core in the coupled inductors increases energy conversion efficiency and improves transient response of the converter. The coupled inductors can be employed in buck or boost or buck-boost converters, and they can also be used in buck or boost or buck-boost derived converters with isolation transformers.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: April 23, 2019
    Inventors: Wenkang Huang, Bradley M. Lehman
  • Patent number: 10224140
    Abstract: A surface mount power inductor component for a circuit board including multi-phase power supply circuitry includes a single piece, integrally fabricated magnetic core piece formed with vertically extending interior passageways provided with vertically elongated pre-formed conductive windings that are not magnetically coupled to reduce the footprint of the inductor component while increasing its power capacity. A distributed gap material is also provided in the vertical passageways with the conductive windings that respectively connect to each phase of electrical power.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: March 5, 2019
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: John J. Janis, Yipeng Yan
  • Patent number: 10211746
    Abstract: Disclosed is an integrated transformer used in a resonant converter. The integrated transformer includes a primary side circuit, a secondary side circuit and an integrated core. A first voltage received by the primary side circuit is converted to a second voltage due to the electromagnetic induction, and the second voltage is outputted by the secondary side circuit. The primary side circuit is configured on the integrated core. The integrated core includes many iron rings, and the iron rings have a common side. The common side of the iron rings is a center column of the integrated core, and the other sides of the iron rings are rim columns of the integrated core. The coils of the primary side circuit are configured respectively to the rim columns of the integrated core, and the coils of the primary side circuit are connected in serial.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: February 19, 2019
    Inventor: Jing-Yuan Lin
  • Patent number: 10163559
    Abstract: A terminal electrode includes a base extending along the outer end face of a flange, a mounting part extending from the base along the bottom face of the flange via a first bending part that covers the edge portion where the outer end face and the bottom face meet, and a wire connection part extending from the base along a substantially horizontal face via a second bending part that covers the edge portion where the outer end face and the substantially horizontal face meet, the wire connection part being electrically connected to an end portion of a wire.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: December 25, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Akio Igarashi, Takashi Murakami, Koji Onishi
  • Patent number: 10149416
    Abstract: A shielding film for an apparatus with a device for wireless charging is provided which comprises several stacked layers. The layers each have several strips of a nanocrystalline soft magnetic alloy arranged on an adhesive layer, the nanocrystalline soft magnetic alloy having a round hysteresis loop. The strips of adjacent layers are offset with respect to one another.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: December 4, 2018
    Assignee: VACUUMSCHMELZE GMBH & CO. KG
    Inventors: Christian Polak, Matthias Schmidt
  • Patent number: 10148164
    Abstract: A topology of composite cascaded high-voltage and low-voltage modules is provided. It includes at least one high-voltage module, at least one low-voltage module, at least one local control circuit and at least one DC-to-DC module. At least one high-voltage module is connected with at least one low-voltage module in cascade manner. At least one local control circuit outputs at least one signal to at least one high-voltage driving circuit and at least one low-voltage driving circuit. An input of at least one DC-to-DC module is connected with two ends of a low-voltage bus capacitor, for receiving a low-voltage DC bus voltage and converting the low-voltage DC bus voltage into a DC output voltage, so as to provide one or more of at least one high-voltage driving circuit, at least one low-voltage driving circuit and at least one local control circuit with a power supply.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: December 4, 2018
    Assignee: Delta Electronics (Shanghai) Co., Ltd.
    Inventors: Jianping Ying, Zhiming Hu, Wei Tian, Wei Xu, Jianfei Zheng
  • Patent number: 10134522
    Abstract: A planar reactor includes a core and a coil. The core includes an upper board, a lower board and a pillar. The pillar is located between the upper board and the lower board. A winding space is located among the upper board, the lower board and the pillar. The coil is wound around the pillar and located in the winding space. The pillar and at least one of the upper board and the lower board are coplanar at a first side of the planar reactor. The pillar is sunk into the winding space from a second side of the planar reactor, wherein the first side is opposite to the second side. A first end of the coil is exposed from the first side of the planar reactor. A second end of the coil is hidden in the winding space partially or wholly at the second side of the planar reactor.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: November 20, 2018
    Assignee: CYNTEC CO., LTD.
    Inventors: Wei Zhang, Chu-Keng Lin, Hung-Chih Lin, Hsieh-Shen Hsieh
  • Patent number: 10096424
    Abstract: Breakage of a ring core or a bobbin upon injection molding of molten resin is to be prevented in a method of manufacturing a reactor including the ring core. A reactor includes a ring core, a bobbin, a pair of coils, and a plastic cover. The bobbin includes a pair of cylinder portions, and flanges connecting ends of the cylinder portions. The reactor is manufactured by following processes. First protrusions that make contact with an inner circumferential surface of the ring core are provided on outer sides of the flanges along a cylinder axis direction. Second protrusions are provided at positions facing the corresponding first protrusions across the ring core are provided on a cavity surface of a mold that forms the plastic cover by injection molding. The plastic cover is formed by injecting molten resin into the mold while clamping the ring core by the first and second protrusions.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: October 9, 2018
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOKAI KOGYO CO., LTD.
    Inventors: Hiroyuki Miyauchi, Shuichi Hirata, Takeshi Okada, Satoshi Ito, Kengo Hara
  • Patent number: 10020106
    Abstract: A reactor includes a reactor body and a heat sink. The reactor body includes coil wire wound around a core. The heat sink is fixed to the reactor body through a heat transfer sheet. The heat sink includes a restricting wall for the heat transfer sheet such that expansion of the heat transfer sheet in a first direction is restricted more than expansion of the heat transfer sheet in a second direction. The first direction is an extending direction of the coil wire on a surface of the reactor body, which abuts on the heat transfer sheet. The second direction is an axis direction of the coil wire.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: July 10, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Miyauchi, Hirotaka Kamijo, Shuichi Hirata, Satoshi Ito
  • Patent number: 10006110
    Abstract: Mixed magnetic powders for making a magnetic core or body is disclosed, wherein the mixed magnetic powders comprises a first magnetic powder and a second magnetic powder, each of the first magnetic powder and the second magnetic powder being made of a soft magnetic material, wherein the average particle diameter of the first magnetic powder is greater than that of the second magnetic powder, and each of the first magnetic powder and the second magnetic powder has a pre-configured particle size distribution for increasing the density of the magnetic body.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: June 26, 2018
    Assignee: CYNTEC CO., LTD.
    Inventors: Lu-Kuei Lin, Shih-Feng Chien, Po-I Wu
  • Patent number: 9953758
    Abstract: A magnetic element is disclosed, and includes a magnetic core, at least one winding set and at least one heat conduction pipe. The magnetic core includes two magnetic columns arranged oppositely, and two magnetic plates arranged oppositely. The magnetic plates respectively cover two opposite end surfaces of each magnetic column to mutually form a closed magnetic flux path with the magnetic columns. Each of the magnetic columns includes a plurality of first magnetic blocks stacked together. Each of the magnetic plates includes at least one second magnetic block. The winding set binds one of the magnetic columns. The heat conduction pipe is disposed internally in one of the magnetic columns.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: April 24, 2018
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Ai-Xing Tong, Teng Liu
  • Patent number: 9930529
    Abstract: A shared data communications system includes a network file server and two routers, each with its own address. A first router provides wireless access to a first part of the system. A second router provides wireless access to a second part of the same, shared system via the technique known as broadband-over-power line (BPL). In the second part, a first BPL unit is carried by the proximal end of an electrical conductor for receiving and sending signals between it and distal, second BPL unit on the same electrical conductor. The use of separate routers with different addresses and a power line to transmit and receive data to confine the wireless portion of the second part of the system to a smaller area increase the physical security of wireless communications with the second part, making it less likely data communications taking place in the second part will be accessed by others.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: March 27, 2018
    Assignee: THE BOEING COMPANY
    Inventors: Timothy M Mitchell, Nha Thanh Nguyen, Anil Kumar
  • Patent number: 9887032
    Abstract: A magnetic component and a transformer are provided by the present disclosure. The magnetic component includes: at least three core columns; and a winding wound around at least one of the at least three core columns; wherein a medium having a relative initial permeability equal to 1 is disposed on at least one side of the at least three core columns. In the present disclosure, a conventional magnetic cover board with a high relative initial permeability is replaced by a medium with a relative initial permeability (ur) satisfied ur=1, such as air or a cover board.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: February 6, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Na Dong, Yicong Xie, Min Zhou
  • Patent number: 9853546
    Abstract: An apparatus and methods for reducing overshoot and undershoot using a reconfigurable inductor in a switching voltage regulator. Specifically, the switching voltage regulator includes a reconfigurable inductor, the reconfigurable inductor has a conductive control ring, and the conductive control ring has an adjustable enclosed area controlled by at least a first switch, wherein the reconfigurable inductor has a varying inductance based on a state of at least the first switch and the adjustable enclosed area of the conductive control ring is shown.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: December 26, 2017
    Assignee: INTEL CORPORATION
    Inventors: Donghwi Kim, Sergio Augusto Clavijo, Tae H. Kim, James S. Dinh
  • Patent number: 9672971
    Abstract: A coil component includes a coil section and an outer package made of magnetic material in which the coil section is embedded. Both ends of the coil section are drawn out as outer electrodes from a first lateral face of the outer package, and the drawn-out sections are bent toward a bottom face of the outer package, and further bent along the bottom face and a second lateral face, then bent toward a cut-out section provided to the top face of the outer package before engaged with the cut-out section. Recesses are provided on the bottom face at places where the outer electrodes overly, and the outer electrodes are bent toward the recesses, respectively. Inside the bent section of each of the outer electrodes, a notch is formed and the notch includes an opening that spreads over the two faces. A vertex portion of the bent section inside the notch is curved.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: June 6, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Mutsuyasu Ohtsubo, Ryusuke Teramoto
  • Patent number: 9620277
    Abstract: Core bodies which have an alignment structure and allow an alignment during the production of magnetic cores irrespective of production tolerances, in which the production tolerances are compensated. In illustrative embodiments a core body of ferromagnetic material comprises a crossbar having an aspect ratio of length to width greater than 1, and at least one core leg extending laterally away from the crossbar along an extension direction. An alignment recess is formed in a rear surface of the crossbar, which is arranged on a side of the crossbar opposite the core legs. A magnetic core is formed of core bodies, whereby at least one core body is provided with an alignment recess, and the core bodies are aligned relative to one another.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: April 11, 2017
    Assignee: Sumida Components & Modules GmbH
    Inventors: Martin Grubl, Helmut Rott
  • Patent number: 9570228
    Abstract: A transformer structure includes a winding cylinder which is a hollow tube, at least one limiting ring which is a ring sheet, multiple conductive sheets and at least one winding. The limiting ring is able to slide along the winding cylinder and to sleeve on the outside of the winding cylinder. The conductive sheets are sleeved on the outside of the winding cylinder. Two conductive sheets of the conductive sheets are attached to two end surfaces of the limiting ring while the two conductive sheets and the limiting ring form a winding space. The at least one winding is correspondingly disposed in the winding space. Thereby, the assembly of the transformer is simplified, and the winding area, as well as the voltage ratio of the transformer, is increased.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: February 14, 2017
    Assignee: CHICONY POWER TECHNOLOGY CO., LTD.
    Inventor: Ka-Hung An
  • Patent number: 9543786
    Abstract: A power management system and method are disclosed. The system can be a high availability power delivery system. The system can be GPS tracked. The system can have multiple batteries, multiple input power sources, and multiple loads. The system can switch between the multiple batteries and the power source to deliver power to the load. The system can ensure there will always be an input power source to power the load.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: January 10, 2017
    Assignee: V5 SYSTEMS, INC.
    Inventors: Steven K. Yung, Yuck Ming Chiu
  • Patent number: 9455080
    Abstract: A reactor using a composite magnetic core in which a ferrite core and a soft magnetic metal core are combined. The reactor is composed of a pair of yoke portion magnetic portions composed of ferrite, winding portion core(s) disposed between the opposite planes of the yoke portion cores, and coil(s) winding around the winding portion core(s). The winding portion core(s) is/are formed using a soft magnetic metal core with a substantially constant cross sectional area. Junction portion cores composed of soft magnetic metal powder cores with a tabular shape are disposed at the spaces where the winding portion core(s) face(s) the yoke portion cores, and the area of the part where the junction portion core faces the yoke portion core is made to be 1.3 to 4.0 times that of the section of the winding portion core.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: September 27, 2016
    Assignee: TDK CORPORATION
    Inventors: Tomofumi Kuroda, Yu Sakurai, Hideyuki Itoh
  • Patent number: 9406430
    Abstract: A reactor using a composite magnetic core in which a ferrite core and a soft magnetic metal core are combined. The reactor is composed of a pair of yoke portion magnetic portions composed of a ferrite core, winding portion core(s) disposed between the opposite planes of the yoke portion cores, and coil(s) wound around the winding portion core(s). The winding portion core(s) is/are made of a soft magnetic metal core, and the cross sectional area of the part for winding the coil of the winding portion core is substantially constant. When the cross sectional area of the part for winding the coil of the winding portion core is set as S1, and the area of the parts opposite to the yoke portion cores in the winding portion core(s) is set as S2, the area ratio S2/S1 is set to be 1.3 to 4.0.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: August 2, 2016
    Assignee: TDK CORPORATION
    Inventors: Tomofumi Kuroda, Yu Sakurai, Hideyuki Itoh
  • Patent number: 9349520
    Abstract: Ferromagnetic cores made from amorphous glasses and methods of forming ferromagnetic cores from metallic glasses are provided. The method forms a magnetic core from a section of a series of concentrically nested ferromagnetic tubes formed of an amorphous metallic material having a Curie-point temperature above room temperature and demonstrating soft ferromagnetic properties, thereby simplifying the manufacturing process and improving the electrical and mechanical performance of the core itself.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: May 24, 2016
    Assignee: California Institute of Technology
    Inventors: Marios D. Demetriou, William L. Johnson, Xiao Liu, Joseph P. Schramm, Georg Kaltenboeck
  • Patent number: 9287038
    Abstract: A coupled inductor includes a ladder magnetic core including two opposing rails extending in a lengthwise direction and joined by a plurality of rungs. The coupled inductor further includes a respective winding wound around each of the plurality of rungs. The plurality of rungs are divided into at least two groups of rungs, and a lengthwise separation distance between adjacent rungs in each group of rungs is less than a lengthwise separation distance between adjacent rungs of different groups of rungs.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: March 15, 2016
    Assignee: Volterra Semiconductor LLC
    Inventor: Alexandr Ikriannikov
  • Patent number: 9281117
    Abstract: The present application discloses a magnetic core structure and an electric reactor. The magnetic core structure includes an upper cover plate and a lower cover plate which are arranged oppositely and at least one wrapping post having two ends connected to the upper cover plate and lower cover plate, respectively. A cross-sectional area of the upper cover plate and/or of the lower cover plate is larger than that of the wrapping post. The upper cover plate, the lower cover plate and the wrapping post are made of a magnetic powder core material, an amorphous material, a nanocrystalline material or a silicon steel material. Since the cross-sectional area of the upper cover plate and/or of the lower cover plate is larger than that of the wrapping post, this may bring excellent DC-Bias characteristic to an electric reactor or inductor, and make the electric reactor or inductor have lower magnetic core loss.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: March 8, 2016
    Assignee: Delta Electronics (Shanghai) CO., LTD.
    Inventors: Minghui Dai, Ke Dai, Jinping Zhou, Min Zhou, Teng Liu
  • Patent number: 9041503
    Abstract: An amorphous transformer which includes an amorphous core formed of an amorphous material with a lap provided at an upper portion and allowed to stand in substantially a vertical direction while being supported at a core support member, and a coil which is fitted with the amorphous core. The core support member is formed by integrating a core support member for supporting a side surface of the amorphous core and a corner support member for supporting a corner portion of the core. The core support member is provided in substantially a vertical direction along at least one of the side surfaces of the core.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: May 26, 2015
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Ryosuke Mikoshiba, Hiroyuki Endo, Kenji Nakanoue, Toshiaki Takahashi, Tooru Honma
  • Patent number: 9041500
    Abstract: A magnetic core includes a first core having a predetermined magnetic permeability and a second core formed of the same material as the first core. The second core forms a closed magnetic circuit together with the first core. The second core is configured to radiate heat through a heat radiating unit. At least one of the first core and the second core is configured to be wound with a coil. The magnetic core includes a third core that is arranged between the first core and the second core and has a lower magnetic permeability than the first core.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: May 26, 2015
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Sergey Moiseev
  • Publication number: 20150137932
    Abstract: An integrated circuit has a semiconductor die provided in a first IC layer and an inductor fabricated on a second IC layer. The inductor may have a winding and a magnetic core, which are oriented to conduct magnetic flux in a direction parallel to a surface of a semiconductor die. The semiconductor die may have active circuit components fabricated in a first layer of the die, provided under the inductor layer. The integrated circuit may include a flux conductor provided on a side of the die opposite the first layer. PCB connections to active elements on the semiconductor die may progress through the inductor layer as necessary.
    Type: Application
    Filed: December 3, 2014
    Publication date: May 21, 2015
    Applicant: ANALOG DEVICES, INC.
    Inventor: Baoxing Chen
  • Patent number: 9035736
    Abstract: A magnetic device is provided. The magnetic device includes a magnetic core and a conductive winding inductively coupled to the magnetic core. The conductive winding includes a first terminal segment, a second terminal segment, and an inductive segment electrically coupled in series therebetween. The first terminal segment includes a current sensing element.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: May 19, 2015
    Assignee: General Electric Company
    Inventors: Joao Luiz Andres, John F. Steel, Robert James Catalano, Loc Ngo
  • Patent number: 9030282
    Abstract: A permanent magnet DC inductor is disclosed which includes at least two separate and individual magnetic inductors, each having its own core structure and forming closed individual magnetic paths having at least one magnetic gap. Windings are provided on the magnetic cores, and at least one permanent magnet piece is provided with each inductor. The separate magnetic cores having the at least one magnetic gap are arranged against each other to form external magnetic gaps with the permanent magnet pieces arranged inside the external magnetic gaps on both sides of the at least one magnetic gap.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: May 12, 2015
    Assignee: ABB Oy
    Inventor: Paulius Pieteris
  • Patent number: 9024714
    Abstract: A static apparatus includes an iron core which includes a plurality of magnetic plates stacked in one direction and in which a shaft portion having a main surface and a side surface is formed, and a coil wound around the shaft portion. Slits extending in an axial direction of the shaft portion are formed in at least a surface layer magnetic plate constituting the main surface, of the plurality of magnetic plates. Some of the slits are formed in the main surface, at an end portion close to the side surface, at a predetermined formation density. The formation density of the slits is highest at the predetermined formation density, and is reduced as at least one of a minimum distance from the side surface within the main surface and a distance from the main surface on a side close to the slits in the stacking direction is increased.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: May 5, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tetsuya Matsuda, Ryuichi Nishiura, Hiroyuki Akita, Takeshi Imura, Yasuo Fujiwara, Yoshinori Shimizu, Kazuaki Aono
  • Patent number: 9024715
    Abstract: In a power converting transformer, an I-core has a pair of fixing grooves provided at centers on opposite side surfaces of the I-core in a y-direction in an xyz orthogonal coordinate system, the fixing grooves extending through the I-core in the z-direction, and an E-core has a pair of fixing recess portions provided at x-direction centers of the y-direction opposite end portions of the base portion on a surface opposite from a surface of the base portion facing the I-core. The I-core and the E-core are pressed and fixed to each other by a fixing spring wrapped around the I-core and the E-core through the fixing grooves and the fixing recess portions. An x-direction length of the E-core is shorter than an x-direction length of the I-core, and a y-direction length of the E-core is shorter than or equal to a y-direction distance between the fixing grooves of the I-core.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: May 5, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masahiro Nishikawa, Tomoyuki Nakano
  • Patent number: 9019062
    Abstract: An inductive component has a winding and a core that includes a plurality of core areas that contain different magnetic materials.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: April 28, 2015
    Assignee: EPCOS AG
    Inventor: Kvetoslav Hejny
  • Patent number: 9019063
    Abstract: An M-winding coupled inductor includes a first end magnetic element, a second end magnetic element, M connecting magnetic elements, and M windings. M is an integer greater than one. Each connecting magnetic element is disposed between and connects the first and second end magnetic elements. Each winding is wound at least partially around a respective one of the M connecting magnetic elements. The coupled inductor further includes at least one top magnetic element adjacent to and extending at least partially over at least two of the M connecting magnetic elements to provide a magnetic flux path between the first and second end magnetic elements. The inductor may be included in an M-phase power supply, and the power supply may at least partially power a computer processor.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: April 28, 2015
    Assignee: Volterra Semiconductor Corporation
    Inventor: Alexandr Ikriannikov
  • Patent number: 9019064
    Abstract: An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: April 28, 2015
    Assignee: Volterra Semiconductor Corporation
    Inventors: Alexandr Ikriannikov, Anthony J. Stratakos, Charles R. Sullivan, Aaron M. Schultz, Jieli Li
  • Patent number: 9019061
    Abstract: A magnetic device formed with U-shaped core pieces employable in a power converter, and a method of forming the same. In one embodiment, the magnetic device includes a rectilinear core piece formed of a magnetic material, and first and second U-shaped core pieces positioned on the rectilinear core piece. The magnetic device also includes first and second conductive windings formed about the first and second U-shaped core pieces, respectively.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: April 28, 2015
    Assignee: Power Systems Technologies, Ltd.
    Inventor: Sriram Chandrasekaran
  • Publication number: 20150109086
    Abstract: There are provided a core and a coil component including the same. The core includes core pieces coupled to each other, each of the core pieces including: a plurality of legs; a connection part connecting one ends of the legs to each other; and at least one contact part formed at a distal end of at least one of the legs in a manner in which a cross-sectional area of the leg may be decreased.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 23, 2015
    Applicants: INDUSTRY-ACADEMIC COOPERATION FOUNDATION GYEONGSANG NATIONAL UNIVERSITY, SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Sun WON, Tae Won HEO, Young Min LEE, Hwi Beom SHIN, Yong Hwan SHIN
  • Patent number: 9013258
    Abstract: A rectifier transformer including at least one secondary with windings, one pair of magnetic transductors per winding, one of the transductors having one or more first busbars and the other having one or more second busbars. All of the busbars of the pair of transductors are connected to the same winding. The or each first or second, busbar is connected to a single positive or negative, terminal (2w+) designed to be connected to a positive or negative, arm of the rectifier. All of the busbars of the pair of magnetic transductors form one or more groups that are encircled by at least one magnetic toroid and that comprise at least one first busbar and at least one second busbar, so that, when the terminals are short-circuited, the busbars of a group pass currents of opposite directions such that the sum of the currents in one direction is equal to the sum of the currents in the other direction.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: April 21, 2015
    Assignee: ALSTOM Technology Ltd
    Inventors: Serge Tirilly, Triomphant Ngnegueu, David Marnay
  • Publication number: 20150102893
    Abstract: There is to provide a coil part capable of reducing the number of fastening means such as screws and so on required when attaching it to a substrate. A coil part includes a transformer unit and a reactor unit, wherein the transformer unit includes: a primary winding part formed by winding a flat wire around a primary side hollow part; secondary winding parts, the secondary winding part being formed by winding a flat wire around a secondary side hollow part communicating with the primary side hollow part, arranged in pairs in a state of facing one side and another side of the primary winding part respectively; and a first core inserted into the primary side hollow part and the secondary side hollow part, and the reactor unit includes: a reactor winding part formed by extending one terminal side of the flat wire constituting the secondary winding part and winding the flat wire around a reactor side hollow part; and a second core inserted into the reactor side hollow part.
    Type: Application
    Filed: September 25, 2014
    Publication date: April 16, 2015
    Inventors: Hiroshi KAWASHIMA, Jun MUTO, Takahiro HIRANO
  • Patent number: 9007162
    Abstract: A “Y”-shaped transformer includes a “Y” shaped magnetic core that includes a top portion and a bottom portion. The top portion and the bottom portion both include a plurality of “Y”-shaped laminates stacked on top of one another and bent to form a plurality of core limbs. A plurality of input windings are wound around each of the plurality of core limbs. A plurality of output windings wound are wound around each of the plurality of core limbs.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: April 14, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Scott P. Wilkinson, James H. Clemmons
  • Patent number: 8994487
    Abstract: A transformer includes a bobbin, at least one primary winding coil, at least one secondary winding coil, and a magnetic core assembly. The bobbin includes a main body, plural extension structures, and plural pin groups. The main body includes a channel, plural winding sections, a first connecting seat, and a second connecting seat. The plural extension structures are connected with the first connecting seat and the second connecting seat, respectively. In addition, each of the plural extension structures has a notch and a stepped structure, and the stepped structure comprises plural stepped parts. Each of the primary winding coil and the secondary winding coil includes plural outlet terminals. The plural outlet terminals of the secondary winding coil are respectively disposed on the plural stepped parts of the stepped structure and fixed on the pin group which is disposed on one of the extension structures.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 31, 2015
    Assignee: Delta Electronics, Inc.
    Inventors: Han-Hsing Lin, Hsiang-Yi Tseng, Ching-Hsiang Tien, Hsin-Wei Tsai, Yi-Lin Chen, Chun-Ping Chen
  • Publication number: 20150084731
    Abstract: Disclosed herein is a pulse transformer that includes a drum core having a winding core portion and first and second flange portions, a plate core connected to the first and second flange portions, and a plurality of wires that are wound around the winding core portion. The first and second flange portions and the plate core are ground such that an inductance of the pulse transformer is 350 ?H or more when a bias current of 8 mA is applied to the wires.
    Type: Application
    Filed: September 22, 2014
    Publication date: March 26, 2015
    Applicant: TDK Corporation
    Inventors: Nobuo TAKAGI, Setu TSUCHIDA, Tasuku MIKOGAMI, Tomonao SUTO
  • Patent number: 8988178
    Abstract: An inductive coupler assembly for use in a downhole environment and related methods are described. An example indicative coupler assembly includes a first inductive coupler having first and second magnetically coupled coils and a second inductive coupler having third and fourth magnetically coupled coils. The first and third coils are coupled to a first pair of signal lines and the second and fourth coils are coupled to a second pair of signal lines. The first inductive coupler is to magnetically convey a differential communications signal between the first and second pairs of signal lines, and the second inductive coupler is to magnetically convey a common mode power signal between the first and second pairs of signal lines.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: March 24, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Benoit Deville, Yann Dufour, Bernard G Juchereau, Christian Chouzenoux
  • Publication number: 20150070125
    Abstract: The disclosure relates to an integral inductor arrangement with at least three magnetic loops arranged side by side to each other in a row and at least one winding associated with each of the magnetic loops. The magnetic loops are formed by individual core elements, each of which being part of one of the magnetic loops, and shared core elements, each of which being part of two adjacent of the magnetic loops. The shared core elements are separated from the individual core elements by magnetic gaps and each of the at least one winding is arranged around one of the individual core elements. The disclosure further relates to a use of such integral inductor arrangement within a 3-phase AC-filter for a power inverter for feeding electrical power into a power grid.
    Type: Application
    Filed: November 17, 2014
    Publication date: March 12, 2015
    Inventors: Milosz Handzel, Stefan Domagala, Marek Rylko, Mariusz Walczak, Mariusz Gwadera, Artur Dziekan
  • Publication number: 20150061816
    Abstract: There are provided a magnetic composition including a glass component capable of not reacting with a ferrite grain but being uniformly distributed only in a grain boundary, instead of using an existing glass component, thereby achieving improved permeability, specific resistance and high frequency specific resistance, and a multilayer electronic component manufactured by using the same.
    Type: Application
    Filed: November 19, 2013
    Publication date: March 5, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Bum Suk KANG, Young Il LEE, Hee Sang KANG, Byeong Cheol MOON, Hew Young KIM, Chang Joo LEE
  • Publication number: 20150061815
    Abstract: A planar closed-magnetic-loop inductor and a method of fabricating the inductor are described. The inductor includes a first material comprising a cross-sectional shape including at least four segments, at least one of the at least four segments including a first edge and a second edge on opposite sides of an axial line through the at least one of the at least four segments. The first edge and the second edge are not parallel.
    Type: Application
    Filed: September 4, 2013
    Publication date: March 5, 2015
    Applicant: International Business Machines Corporation
    Inventors: Robert E. Fontana, JR., William J. Gallagher, Philipp Herget, Eugene J. O'Sullivan, Lubomyr T. Romankiw, Naigang Wang, Bucknell C. Webb
  • Patent number: 8970339
    Abstract: A magnetic core is provided. The magnetic core includes a magnetic base and a magnetic plate. The magnetic base includes a first U-core, a second U-core, and a spacing member. The first U-core has a relatively high magnetic permeability, and includes a first surface having a first winding channel defined therein. The second U-core has a relatively high magnetic permeability, and includes a second surface having a second winding channel defined therein. The first and second surfaces are substantially coplanar with one another. The spacing member is connected to the first and second U-cores such that a gap having a relatively low magnetic permeability is formed between the first and second U-cores. The magnetic plate is coupled to the magnetic base such that the magnetic plate substantially covers the first and second surfaces.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 3, 2015
    Assignee: General Electric Company
    Inventor: Robert James Catalano
  • Patent number: 8964410
    Abstract: A transformer has two magnetic cores, at least one primary winding unit mounted in the magnetic cores, at least one secondary winding unit mounted in the magnetic cores and two rectifying circuit boards externally mounted beside the magnetic cores. An AC voltage output from the secondary winding unit is transmitted to and rectified by the rectifying circuit board. Therefore, the size of the transformer is compact, and heat energy generated by electronic elements mounted on the rectifying circuit board is effectively dissipated to maintain normal operation of the transformer. Further, since the transmission path from the secondary winding unit to the rectifying circuit board is short, energy loss is reasonably reduced when the transformer is operated under a high frequency situation or a larger current mode.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: February 24, 2015
    Assignee: Acbel Polytech Inc.
    Inventors: Shun-Te Chang, Chien-Hua Wu, Chia-An Yeh, Hsiang-Yu Hung