公开(公告)号：US10778132B2

公开(公告)日：2020-09-15

申请号：US16436844

申请日：2019-06-10

Applicant: QM Power, Inc.

Inventor： Charles J. Flynn ,  Cooper N. Tracy

IPC: H02P23/00 ,  H02P25/022 ,  H02P25/024

Abstract: A circuit includes first and second phase windings, a direct current (DC) power supply to convert alternating current (AC) power to DC power, at least one power switch between the first and second phase windings, and a controller to control the at least one power switch. The circuit also includes a component to prevent the DC power supply from collapsing when the at least one power switch is on during a first portion of a cycle and a second component to prevent the DC power supply from collapsing when the at least one power switch is on during a second portion of the cycle.

公开(公告)号：US20200244203A1

公开(公告)日：2020-07-30

申请号：US16755259

申请日：2018-10-10

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Takafumi HARA ,  Toshiyuki AJIMA ,  Shigehisa AOYAGI ,  Hiroyuki OTA ,  Kenichiro MATSUBARA

IPC: H02P23/14 ,  H02P27/08 ,  H02P25/022 ,  F16D55/225 ,  F16D65/18

Abstract: Disclosed are a motor control device that can accurately estimate a rotor position based on a neutral point potential even when a load increases, and a brake control device that is driven by the motor control device. The motor control device 3 includes a three-phase synchronous motor 4 including a three-phase winding, an inverter 31 connected to the three-phase winding, a control unit 6 for controlling the inverter based on a rotor position of the three-phase synchronous motor, and a rotational position estimation unit 2 for estimating a rotor position θd based on a neutral point potential Vn of the three-phase winding. The rotational position estimation unit estimates a rotor position selectively using one or more of a plurality of detected values of the neutral point potential according to a pre-estimated value of the rotor position and a voltage application state to the three-phase winding.

公开(公告)号：US20200044576A1

公开(公告)日：2020-02-06

申请号：US16598178

申请日：2019-10-10

Applicant: ABB Schweiz AG

Inventor： Thomas Besselmann ,  Jörg Pieder

IPC: H02M5/45 ,  H02P27/06 ,  H02P25/022

Abstract: A thyristor bridge of an electrical converter is connected to at least one DC link and including at least one phase leg for each output phase and each phase leg being composed of two series-connected thyristor arms. The thyristor arms of a thyristor bridge are cyclically switched by: determining an upper bound for a firing angle of a thyristor arm, wherein the upper bound is determined from voltage and current measurements; and determining a firing angle for the thyristor bridge, which firing angle determines a switching time of the thyristor arm, wherein the firing angle is determined, such that it is less or equal to the upper bound.

公开(公告)号：US10483902B1

公开(公告)日：2019-11-19

申请号：US16116106

申请日：2018-08-29

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Gennadi Sizov ,  Ahmed S. Mohamed Sayed Ahmed

IPC: H02P29/50 ,  H02P25/022 ,  H02M1/12 ,  H02P21/22 ,  H02M1/00

Abstract: A current regulator for a motor controller reduces distortion of the current output to a motor. Feedback signals corresponding to the current present on the motor are transformed into a fundamental and a harmonic reference frame. Notch filters in each reference frame attenuate components of the current feedback signal from the other reference frame. Current regulators in each reference frame receive the filtered current feedback signal in the corresponding reference frame and generate an output signal that is used to regulate the output current to the motor to the desired level of current in the corresponding reference frame. The output signal from the regulator in the harmonic reference frame is transformed to the fundamental reference frame, and the output of the two regulators are combined in a common reference frame to generate a reference signal corresponding to the required voltage output to the motor to achieve desired operation.

公开(公告)号：US10454405B2

公开(公告)日：2019-10-22

申请号：US15300410

申请日：2015-02-19

Applicant: Lemförder Electronic GmbH

Inventor： Jorg Jahn ,  Thomas Erdmann ,  Ajoy Palit

IPC: H02K11/33 ,  H02K9/22 ,  H02P29/60 ,  H02P29/00 ,  H02P25/022 ,  H02P25/024 ,  H02K11/30

Abstract: A driver assembly comprises a predetermined number of semiconductor switches, wherein one of the semiconductor switches is arranged inside of a circular curve and the remaining semiconductor switches are arranged on the circular curve.

公开(公告)号：US10348222B2

公开(公告)日：2019-07-09

申请号：US15635376

申请日：2017-06-28

Applicant: Deere & Company

Inventor： Sumit Dutta ,  Long Wu ,  Danielle Li ,  Brij N. Singh ,  Jared Lervik

IPC: H02P5/74 ,  H02P6/04 ,  H02P21/00 ,  H02P27/08 ,  H02P29/66 ,  H02P25/022 ,  B60L11/08 ,  B60L11/12

Abstract: In an example embodiment, a controller includes a memory having computer-readable instructions stored therein and a processor. The processor is configured to execute the computer-readable instructions to determine a first set of inductance values for at least one load machine and second set of inductance values for a generator machine, determine a first set of gains for the at least one load machine based on the first set of inductance values and a regulator bandwidth, determine a second set of gains for the generator machine based on the second set of inductance values and the regulator bandwidth, and generate voltage commands for driving the at least one load machine and the generator machine based on at least the first and second sets of gains.

公开(公告)号：US20190199260A1

公开(公告)日：2019-06-27

申请号：US16292593

申请日：2019-03-05

Applicant: Toshiba Infrastructure Systems & Solutions Corporation ,  Toshiba Industrial Products and Systems Corporation

Inventor： Shun Taniguchi ,  Kazuya Yasui ,  Tomoaki Shigeta

IPC: H02P21/22 ,  H02P25/092 ,  H02P25/022 ,  H02P27/08

Abstract: A device according to an embodiment includes an circuit; a detector for detecting a current response output from the circuit; a vector converter for converting the current response into a d-axis current and a q-axis current by using a rotational phase angle of a motor connected to the circuit; a calculator for calculating, based on a torque command and a current phase angle command, a current amplitude command of the current response output from the circuit; a dq-axes converter for calculating a d-axis current command and a q-axis current command from the current amplitude command and the current phase angle command; and a controller for calculating a voltage command so that the d-axis current command and the q-axis current command are equal to the d-axis current and the q-axis current.

公开(公告)号：US10320318B2

公开(公告)日：2019-06-11

申请号：US15894848

申请日：2018-02-12

Applicant: QM Power, Inc.

Inventor： Charles J. Flynn ,  Cooper N. Tracy

IPC: H02P23/00 ,  H02P25/022

Abstract: A circuit includes motor phase windings that are divided, a direct current (DC) power supply between the divided motor phase windings, a power switch circuit comprising at least one power switch, the at least one power switch being between the divided motor phase windings. The circuit also includes a first non-collapsing DC power supply component to prevent the DC power supply from collapsing when the at least one power switch is on during a first portion of a cycle and a second non-collapsing DC power supply component to prevent the DC power supply from collapsing when the at least one power switch is on during a second portion of the cycle.

公开(公告)号：US20190140564A1

公开(公告)日：2019-05-09

申请号：US15804190

申请日：2017-11-06

Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

Inventor： Haibo Li ,  Prerit Pramod

IPC: H02P6/08 ,  H02P6/28 ,  H02P25/022 ,  B62D5/04

CPC classification number: H02P6/08 ,  B62D5/046 ,  H02P6/28 ,  H02P25/022 ,  H02P25/024

Abstract: Technical solutions are described for power management in permanent magnet synchronous machines. An example system includes a permanent magnet synchronous motor (PMSM), and a motor control system that limits supply current and regenerative current of the PMSM. The limiting includes receiving a torque command and generating a corresponding current command for generating an amount of torque based on the torque command. Further, the limiting includes determining an estimated battery current that is drawn corresponding to the current command. Further, in response to the estimated battery current exceeding a threshold, a modified torque command is generated, and a modified current command corresponding to the modified torque command is also generated. The modified current command is used to cause the PMSM to generate the amount of torque.

公开(公告)号：US10263485B2

公开(公告)日：2019-04-16

申请号：US15849561

申请日：2017-12-20

Applicant: Briggs & Stratton Corporation

Inventor： Robert Koenen ,  Jason Hansen

IPC: F02B63/00 ,  H02K3/26 ,  F02N5/04 ,  F02B63/04 ,  H02K11/215 ,  H02P9/04 ,  H02P3/22 ,  H02P25/022 ,  H02K1/27 ,  F01P1/02 ,  F01P5/06 ,  F02N11/04 ,  F02P5/15 ,  F02P7/067

Abstract: An engine control system includes an engine, crankshaft, and a flywheel. The flywheel is coupled to the crankshaft of the engine and includes a number of magnets arranged axially along a first side. The system further includes a printed circuit board including a number of coils integrated into the circuit board. The printed circuit board is positioned such that a first face of the printed circuit board is positioned parallel to the first side of the flywheel. Power is generated by the flywheel rotating and causing the magnetic fields associated with the magnets to induce a current though the coils integrated into the printed circuit board.