Patents Examined by Bart Iliya
  • Patent number: 10833579
    Abstract: A switching capacitor regulator, comprising: a switching capacitor configured to switch between a first state and a second state, wherein, in the first state, a first node of the switching capacitor is coupled to a second terminal, and a second node of the switching capacitor is coupled to a fixed voltage level, and wherein, in the second state, the first node is coupled to a first terminal, and the second node is coupled to the second terminal; a power switch configured to couple the second node to the second terminal when the switching capacitor is in the second state; and a flying inverter configured to control the power switch, wherein the flying inverter has a positive power terminal and a negative power terminal, wherein the positive power terminal is coupled to the first node, and wherein the negative power terminal is coupled to the second node.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: November 10, 2020
    Assignee: Lion Semiconductor Inc.
    Inventors: Alberto Alessandro Angelo Puggelli, Zhipeng Li, Thomas Li
  • Patent number: 10827586
    Abstract: A load control device for controlling power delivered from a power source to an electrical load may comprise a control circuit configured to control the load regulation circuit to control the power delivered to the electrical load. The control circuit may be configured to operate in an AC mode when an input voltage is an AC voltage and in a DC mode when the input voltage is a DC voltage. The control circuit may be configured to disable the power converter in the DC mode. The control circuit may be configured to render a controllable switching circuit conductive in the AC mode, and non-conductive in the DC mode. The rectifier circuit may be configured to rectify the input voltage to generate a rectified voltage when the input voltage is an AC voltage, and to pass through the input voltage when the input voltage is a DC voltage.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: November 3, 2020
    Assignee: Lutron Technology Company LLC
    Inventors: Robert C. Newman, Jr., Stuart W. DeJonge
  • Patent number: 10811938
    Abstract: Radial direction outer side sizes of a first rectifying unit, a circuit board, and a second rectifying unit configuring a rectifying device are disposed so as to be sequentially smaller in a direction away from a frame of a rotating electrical machine main body, and at predetermined intervals, a cover covering the rectifying device has a cover end wall portion, a cover outer wall portion, and a cover intermediate portion, an inner peripheral side inlet portion is formed in the cover end wall portion, an outer peripheral side inlet portion is formed in the cover intermediate portion, and the outer peripheral side inlet portion is formed of an axial direction covering portion, and a radial direction covering portion that connects the axial direction covering portion and an outer peripheral portion of the cover end wall portion.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: October 20, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masao Akiyoshi, Yuzuru Kobayashi
  • Patent number: 10811918
    Abstract: A stack structure of a rotor core, includes: a plurality of first core layers, each of the first core layers being formed by stacking first core sheets, each of the first core sheets including: an annular base having a shaft through-hole at a central portion thereof; a plurality of yokes spaced apart from each other to be arranged along a circumferential direction of the base and to form a plurality of magnet insertion parts for accommodating magnets; and a plurality of bridges connecting the base and the yokes; and a plurality of second core layers, each of the second core layers being formed by stacking second core sheets, each of the second core sheets including: a plurality of yokes in which the bases and the bridges are removed from the first core sheet, wherein the first core layers and the second core layers are alternately stacked.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: October 20, 2020
    Assignee: NEW MOTECH CO., LTD.
    Inventors: Jeong Cheol Jang, Ji Min Lee, Nam Jong Kim
  • Patent number: 10804816
    Abstract: A method and apparatus for power conversion comprising a three-port converter comprising a DC port for coupling to an external DC line, an AC port for coupling to an external AC line, and a storage port, internal to the three-port converter, for storing excess energy and discharging needed energy during power conversion, wherein the storage port is located on a DC-side of the three-port converter and is decoupled from the DC port such that a voltage on the storage port can be controlled independently of a DC voltage on the DC port.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: October 13, 2020
    Assignee: Enphase Energy, Inc.
    Inventor: Michael J. Harrison
  • Patent number: 10790697
    Abstract: This system for converting the electrical energy delivered by a supply network comprises of: a converter and at least one zero-sequence current limiting stage flowing in the converter. The or each limiting stage comprises an active compensation circuit comprising a magnetic component and a voltage source connected to the magnetic component, the voltage source and the magnetic component being adapted to serially inject with the converter an active compensation voltage of the zero-sequence voltages generated by the converter.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: September 29, 2020
    Inventors: Jérôme Delanoe, Emmanuel Leleu
  • Patent number: 10790081
    Abstract: Three-phase interleaved LLC and CLLC resonant converters, with integrated magnetics, are described. In various examples, the primary sides of the phases in the converters rely upon a half-bridge configuration and include resonant networks coupled to each other in delta-connected or common Y-node configurations. The secondary sides of the phases can rely upon a full-bridge configurations and are coupled in parallel. In one example, the transformers of the phases in the converters are integrated into one magnetic core. By changing the interleaving structure between the primary and secondary windings in the transformers, resonant inductors of the phases can also be integrated into the same magnetic core. A multi-layer PCB can be used as the windings for the integrated magnetics.
    Type: Grant
    Filed: January 21, 2019
    Date of Patent: September 29, 2020
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Chao Fei, Bin Li, Fred C. Lee, Qiang Li, Hongfei Wu
  • Patent number: 10784760
    Abstract: A core-type linear motor includes: a stator extending in an axial direction, with magnets arranged at intervals in the axial direction, wherein each magnet and its spacing from an adjacent magnet constitute a magnet unit; and a rotor opposite the stator and linearly movable in the axial direction, with coil assemblies arranged side by side in the axial direction. Each coil assembly includes a core with an active portion wound with a coil and a supporting portion. Three coil assemblies have substantially the same length in the axial direction as four magnet units. When the length of each magnet unit is defined as 1, the length of each active portion is 0.3 to 0.5, and the height of each supporting portion, 0.28 to 0.38. These size ratios help increase the motor constant, lower the cogging force, and reduce positive attraction between the rotor and the stator.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: September 22, 2020
    Assignee: Chieftek Precision Co., Ltd.
    Inventors: Ming-Che Hsu, Hsuan-Chun Wu, Hsun-Han Liu
  • Patent number: 10770938
    Abstract: An electronically commutated electric motor is disclosed with a stator, a rotor rotatably mounted relative to the stator, and at least one sensor for scanning a magnetic field that co-rotates with the rotor, where the stator includes a stator winding and a magnetically soft stator core, where the rotor includes several permanent magnets arranged distributed in the circumferential direction of the rotor as well as a first magnetically soft rotor core for the permanent magnets, and where the permanent magnets, together with the first magnetically soft rotor core, generate a rotor magnetic field which, for operating the electric motor, interacts with the stator magnetic field of the stator generated by the stator winding and the stator core. A second magnetically soft rotor core adjoins the first magnetically soft rotor core in the axial direction of the rotor.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: September 8, 2020
    Inventor: Stefan Imfeld
  • Patent number: 10763727
    Abstract: An electric machine includes an enclosure housing multiple electrical components including a rotor assembly and a stator assembly, a heat exchanger coupled to the enclosure for cooling of the electrical components by creating an internal fluid flow circuit between the heat exchanger and the electrical components, wherein the heat exchanger comprises multiple cooling fluid inlets and a common cooling fluid outlet, wherein the multiple cooling fluid inlets are arranged so that cooling fluid enters the heat exchanger at different sections, and wherein the cooling fluid exits the heat exchanger through the common cooling fluid outlet.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: September 1, 2020
    Inventors: Nicholas G. Lang, Rajendra Mistry
  • Patent number: 10734879
    Abstract: A linear motor includes a forcer having a plurality of teeth spaced apart along a longitudinal axis of the forcer. At least some teeth arranged about a longitudinal center of the forcer are dimensioned different from at least some other teeth arranged at ends of the forcer distal from the longitudinal center. The teeth may be dimensioned to define a pocket relative to the longitudinal axis of the forcer.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: August 4, 2020
    Assignee: Parker-Hannifin Corporation
    Inventor: Steven Roger Huard
  • Patent number: 10720819
    Abstract: A switched reluctance machine has a stator core salient with stator poles disposed concentrically with a rotor that is salient with rotor poles. A plurality of coil windings are wound about the stator core so that a pair of windings are adjacent each of the stator poles. The pair of coil windings induces magnetic flux in the adjacent stator poles and the rotor rotates to align the rotor poles with the stator poles having the induced magnetic flux. The rotor is rotatable at high speeds of up to 50,000 RPM and the coil windings can be directly cooled.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: July 21, 2020
    Assignee: McMaster University
    Inventors: Piranavan Suntharalingam, Ali Emadi
  • Patent number: 10714996
    Abstract: External rotor electric machine with SMC blocks interposed between permanent magnets. The machine has an internal stator and an external cylindrical rotor. Permanent magnets and SMC blocks are mounted on the inner surface of the rotor.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: July 14, 2020
    Assignee: TM4 INC.
    Inventors: Ruisheng Shi, Arbi Gharakhani, Martin Houle
  • Patent number: 10700560
    Abstract: A sintered magnet has an arc shape cross-section defined by an outer arc, an inner arc, and a pair of end sides connecting an end point of the outer arc and an end point of the inner arc, and a range of an central angle ? of the inner arc is 145°???180°. The inventors have newly found that a large magnetic flux can be obtained according to the sintered magnet and the characteristics of the motor can be improved, using such a sintered magnet.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: June 30, 2020
    Assignee: TDK Corporation
    Inventors: Hideyuki Hisanabe, Hiroshi Ito, Yoshiaki Okada
  • Patent number: 10673291
    Abstract: A permanent-magnet electric motor includes an annular stator core, a rotor core, and a rotating-position detection sensor. In each of a plurality of magnet insertion holes formed in the rotor core, a rare-earth magnet and a ferrite magnet are disposed adjacent to each other in an axial direction of the rotor core. The rotor core has an axial length longer than an axial length of the stator core. The rare-earth magnet is disposed in each of the magnet insertion holes to be opposed to the stator core in a radial direction of the stator core. The ferrite magnet disposed in each of the magnet insertion holes is disposed between the rare-earth magnet disposed in the corresponding magnet insertion hole and the rotating-position detection sensor.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: June 2, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tomoaki Oikawa, Mineo Yamamoto, Hiroyuki Ishii, Hiroki Aso, Junichiro Oya, Yuto Urabe, Takaya Shimokawa
  • Patent number: 10658897
    Abstract: A stator for a rotary electric machine includes a stator core defining multiple slots, and a stator coil including multiple phase windings each of which is connected to a corresponding phase of a power source. Each phase winding includes multiple conductors that are inserted into the slots, connected to adjacent conductors in series, and spaced apart from the adjacent conductors by multiple slot pitches, unit patterns each of which includes some of conductors, and a bridge conductor connecting the unit patterns to each other in series by connecting a pair of conductors arranged in an innermost layer of corresponding slots. Each first conductor of each phase winding is connected to a power line and arranged in an outermost layer of one of the multiple slots.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: May 19, 2020
    Assignee: LG Electronics Inc.
    Inventors: Hyounggun Lee, Minjung Kim, Yangsoo Lee
  • Patent number: 10630159
    Abstract: A magnetic coupling rotor includes permanent magnets arranged at equal angular spacings about its axis of rotation, wherein they respectively face radially inwardly and radially outwardly with their pole faces, of which a respective one bears against a backiron body of ferromagnetic material. The backiron body is a cylindrical ring with smooth peripheral surfaces. Provided for the permanent magnets is a holding device comprising a not or only weakly magnetizable injection-moldable material in the form of a rotary-symmetrical body having recesses for receiving the permanent magnets. The diameters of the holding means and the backiron body are such that they can be fitted together coaxially such that the backiron body at least partially covers the recesses in a radial direction. Thus, formed between it and the holding means is an even number of insertion compartments into which permanent magnets may be inserted.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: April 21, 2020
    Inventors: Norbert Boltz, Alfred Landmann, Felix Muller-Spanka
  • Patent number: 10608508
    Abstract: Unique systems, methods, techniques and apparatuses of an exciterless synchronous machine are disclosed. One exemplary embodiment is a salient pole rotor for an electric machine including one set of pole pairs including a first, second, and third pole pair; a field winding; a set of energy harvest windings, each winding mounted to each of the plurality of pole pairs and structured to receive a harmonic component of AC power from a stator; and a DC power supply structured to receive the harmonic component from the set of energy harvest windings, convert the harmonic component to DC power, and output the DC power to the field winding. The set of energy harvest windings are arranged in a first sequence on the first pole pair, a second sequence on the second pole pair, and a third sequence on the third pole pair, and each sequence is different.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: March 31, 2020
    Assignee: ABB Schweiz AG
    Inventors: Chenjie Lin, Ghanshyam Shrestha, Jing Xu, Joonas Puukko
  • Patent number: 10594208
    Abstract: A current limiting control method for a three-level inverter, comprising the following steps: S1. when a current output from a bridge arm is greater than or equal to a current limiting threshold and a received overcurrent signal is enabled, first turning off the main switch transistors and then turning off the auxiliary switch transistors; S2. when the current output from the bridge arm drops to lower than the current limiting threshold and the received overcurrent signal is disabled, turning on the auxiliary switch transistors; S3. when the received overcurrent signal is disabled and a next PWM effective edge of the main switch transistors arrives, turning on the main switch transistors. The present invention relates also to a current limiting control device for a three-level inverter. By implementing the present invention, it is possible to ensure voltage waveform quality and reduce switching loss.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: March 17, 2020
    Assignee: Vertiv Tech Co., Ltd.
    Inventors: Yuan Zhou, Huawei Hu, Xiangbiao Peng
  • Patent number: 10574117
    Abstract: To increase a thermal transmission amount between a tooth and an insulation member and reduce a thermal resistance. A stator (1) of an electric motor includes a yoke (2), a plurality of teeth (3) arranged in a circumferential direction of an inner circumference of the yoke (2), a winding wire (5) wound on the tooth (3), and an insulation member (4) disposed between the tooth (3) and the winding wire (5), the insulation member (4) being formed of elastic resin. A concave-convex portion (3a) is formed at least on a circumferential surface (A) among the circumferential surface and an axial surface (B) of the tooth (3). A concave-convex portion (4a) is formed on an inner surface of the insulation member (4), the concave-convex portion (4a) being configured to be fitted to the concave-convex portion (3a).
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: February 25, 2020
    Inventors: Kazuto Okazaki, Sumio Yagyu