公开(公告)号：US20190199260A1

公开(公告)日：2019-06-27

申请号：US16292593

申请日：2019-03-05

申请人： Toshiba Infrastructure Systems & Solutions Corporation ,  Toshiba Industrial Products and Systems Corporation

发明人： Shun Taniguchi ,  Kazuya Yasui ,  Tomoaki Shigeta

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

摘要： 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

申请人： QM Power, Inc.

发明人： Charles J. Flynn ,  Cooper N. Tracy

IPC分类号： H02P23/00 ,  H02P25/022

摘要： 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

申请人： STEERING SOLUTIONS IP HOLDING CORPORATION

发明人： Haibo Li ,  Prerit Pramod

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

CPC分类号： H02P6/08 ,  B62D5/046 ,  H02P6/28 ,  H02P25/022 ,  H02P25/024

摘要： 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

申请人： Briggs & Stratton Corporation

发明人： Robert Koenen ,  Jason Hansen

IPC分类号： 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

摘要： 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.

公开(公告)号：US20170310263A1

公开(公告)日：2017-10-26

申请号：US15136479

申请日：2016-04-22

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： CHANDRA S. NAMUDURI ,  LEI HAO

IPC分类号： H02P25/18 ,  H02P25/22 ,  H02P25/022

CPC分类号： H02P25/188 ,  H02P25/022 ,  H02P25/22

摘要： An electric drive system for a three-phase PM electric machine. The drive system includes a split stator winding for each phase of the machine including a first winding section and a second winding section, and an inverter circuit including a pair of inverter switches for each phase, where the pair of inverter switches for each phase is electrically coupled to the first and second winding sections for that phase in the stator. The drive system also includes a switching system including a switch circuit, where the switch circuit includes a plurality of switch assemblies for switching between a full winding control mode and a half winding control mode, where each switch assembly includes a first AC switching device and a second AC switching device, and where each switch assembly is electrically coupled to the pair of inverter switches and the first and second winding sections for a particular phase.

公开(公告)号：US20160352204A1

公开(公告)日：2016-12-01

申请号：US15231479

申请日：2016-08-08

申请人： Johnson Electric S.A.

发明人： Yue LI ,  Chui You ZHOU ,  Ming CHEN ,  Yong Gang ZHANG ,  Xiao Ning ZHU ,  Yong WANG ,  Yong LI ,  Chi Ping SUN ,  Bao Ting LIU ,  En Hui WANG ,  Fei XIN ,  Shing Hin YEUNG ,  Xiu Wen YANG ,  Li Sheng LIU ,  Yan Yun CUI ,  Shu Juan HUANG

IPC分类号： H02K21/14 ,  H02K11/04 ,  H02K11/33 ,  H02P25/022 ,  H02K1/14 ,  H02K1/27

CPC分类号： H02K21/14 ,  H02K1/146 ,  H02K1/2706 ,  H02K2213/12 ,  H02P6/26 ,  H02P25/022 ,  H02P25/024

摘要： A refrigeration apparatus includes a fan and a motor for driving the fan. The motor is a single phase synchronous alternating current motor. In comparison with the traditional motor, the single phase synchronous alternating current motor has a reduced size and reduced cost, while ensuring the stable performance.

摘要翻译： 制冷装置包括风扇和用于驱动风扇的电动机。 电动机是单相同步交流电动机。 与传统的电动机相比，单相同步交流电动机的尺寸减小，成本降低，同时保证了性能的稳定。

公开(公告)号：US12062994B2

公开(公告)日：2024-08-13

申请号：US17381443

申请日：2021-07-21

申请人： UNIVERSITÄT STUTTGART

发明人： David Maier ,  Marco Zimmer ,  Nejila Parspour

IPC分类号： H02P6/15 ,  H02J50/10 ,  H02M7/217 ,  H02P9/12 ,  H02P25/022

CPC分类号： H02M7/217 ,  H02J50/10 ,  H02P25/022

摘要： The present invention relates to a circuit arrangement having an active rectifier circuit, in particular on a secondary side of an inductive energy transmission path. The circuit arrangement has a half or full bridge of power transistors for rectifying an AC voltage induced in an input inductor of the circuit arrangement. The power transistors are connected to the input inductor in such a way that an auxiliary voltage is split off from the induced AC voltage for switching the power transistors. As a result, even large currents, which result in a low output voltage, can be transmitted without endangering the operation of the rectifier circuit.

公开(公告)号：US20240128897A1

公开(公告)日：2024-04-18

申请号：US18338896

申请日：2023-06-21

申请人： Nanjing Chervon Industry Co., Ltd.

发明人： Wenjing Lu ,  Yanqing Xu ,  Guang Li

IPC分类号： H02P3/18 ,  H02P25/022 ,  H02P27/08

CPC分类号： H02P3/18 ,  H02P25/022 ,  H02P27/08 ,  B25F5/02

摘要： A power tool includes: a motor including a rotor and multiple phases of stator windings; and a control circuit configured to control the working state of the motor. The control circuit includes: a driver circuit including multiple switching elements; a controller electrically connected to at least the driver circuit and capable of outputting a control signal to change the conducting states of the multiple switching elements in the driver circuit; and a parameter detection module configured to detect a working parameter of the motor. In response to a braking signal, the controller sets an input parameter of the control circuit according to a preset parameter and the working parameter to control output power of the motor and/or output torque of the motor, thereby controlling the motor to brake.

公开(公告)号：US11936316B2

公开(公告)日：2024-03-19

申请号：US17863335

申请日：2022-07-12

申请人： STEERING SOLUTIONS IP HOLDING CORPORATION

发明人： Pawel Szymula ,  Prerit Pramod

IPC分类号： H02P23/14 ,  H02P25/022 ,  H02P27/08

CPC分类号： H02P23/14 ,  H02P25/022 ,  H02P27/08

摘要： A method of controlling a permanent magnet synchronous machine (PMSM) includes: determining an estimated back-electromotive force (BEMF) generated in windings of the PMSM based on an estimated voltage applied to the windings of the PMSM, an estimated motor current of the PMSM, an estimated motor circuit resistance, and an estimated synchronous inductance of the PMSM. The method also includes determining an estimated permanent magnet (PM) flux linkage in the PMSM based on the estimated motor current of the PMSM; determining a BEMF correction term based on the estimated PM flux linkage; and determining an estimated rotor flux space vector based on the estimated BEMF and the BEMF correction term.

公开(公告)号：US20240072701A1

公开(公告)日：2024-02-29

申请号：US18271290

申请日：2021-12-23

申请人： Hitachi Industrial Equipment Systems Co., Ltd.

发明人： Yu ZHANG ,  Yuuri TAKANO ,  Hideto TAKADA

IPC分类号： H02P21/14 ,  H02P25/022 ,  H02P27/06

CPC分类号： H02P21/14 ,  H02P25/022 ,  H02P27/06

摘要： A electric motor control device comprising a converter section converting AC voltage to DC voltage, an inverter section converting DC voltage from the converter section to AC voltage and supplying said AC voltage to electric motor, an inverter control unit controlling said inverter section, a current detection unit detecting the current flowing in said electric motors and a power calculation unit estimating the temperature of said electric motors from said detected current, calculating the resistance of said electric motors from said estimated temperature, and calculating the copper loss from said calculated resistance.