公开(公告)号：US20170264222A1

公开(公告)日：2017-09-14

申请号：US15201583

申请日：2016-07-04

Applicant: ANPEC ELECTRONICS CORPORATION

Inventor： KUN-MIN CHEN

IPC: H02P6/16 ,  H02P27/06

CPC classification number: H02P6/16 ,  H02P6/20 ,  H02P27/06

Abstract: A motor control circuit is disclosed, which uses one hall sensor to sense the position of the magnetic poles of three-phase motor, and to execute phase switching mechanism by start controller and operation controller. The motor control circuit drives the three-phase motor from a start state to a normal operation state. In the start state, the start controller controls the switching time and controls storage to transmit the digital models of the phase switching to the operation controller. The operation controller executes the phase switching of the full-bridge circuit according to the received digital models, to drive the three-phase motor. In the normal operation state, the start controller stops transmitting the digital models of the phase switching to the operation controller. The operation controller captures six digital models in sequence once every switching time, and executes the phase switching of the full-bridge circuit, to drive the three-phase motor.

公开(公告)号：US20170250701A1

公开(公告)日：2017-08-31

申请号：US15441868

申请日：2017-02-24

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Akane HIROSHIMA ,  Yuji SHIMIZU ,  Yutaka ONO

IPC: H03M1/48 ,  H02K11/225

CPC classification number: H03M1/485 ,  G01B7/30 ,  G01D5/2053 ,  H02K11/225 ,  H02P6/16 ,  H03M1/201

Abstract: The present invention provides a signal processor that improves a resolution of a phase detection without increasing a clock frequency of a controller or decreasing a frequency of an excitation signal. A signal processor 10 includes a comparator 11 that compares a signal obtained by phase modulating a carrier frequency at a rotor rotation angle of a resolver with a dither signal.

公开(公告)号：US09742323B2

公开(公告)日：2017-08-22

申请号：US14993919

申请日：2016-01-12

Applicant: Mabuchi Motor Co., Ltd.

Inventor： Naoto Miyauchi

IPC: H02P6/16 ,  H02K29/08 ,  H02P6/08 ,  H02K11/215 ,  H02K11/30 ,  H02K11/33 ,  H02K1/27 ,  H02K3/28 ,  H02P6/17

CPC classification number: H02P6/16 ,  H02K1/2753 ,  H02K3/28 ,  H02K11/215 ,  H02K11/30 ,  H02K11/33 ,  H02P6/08 ,  H02P6/15 ,  H02P6/17 ,  H02P2203/05 ,  H02P2207/05

Abstract: A phase control circuit for a brushless motor includes a signal output unit that outputs M signals, whose phases differ from each other, in response to a change in the magnetic field resulting from the rotation of magnets placed in a rotor, and a control signal generator that generates two or more different kinds of group of phase control signals, based on at least the M signals, the group of phase control signals being used to control drive voltages, whose phases differ from each other, which are supplied to each phase of an N-phase coil (N being an integer greater than or equal to two). The control signal generator is configured such that a first phase control signal group and a second phase control signal group can be generated.

公开(公告)号：US20170218967A1

公开(公告)日：2017-08-03

申请号：US15132459

申请日：2016-04-19

Applicant: DELTA ELECTRONICS, INC.

Inventor： Kuo-Ying LEE ,  Feng-Ying LIN ,  Meng-Yu CHEN ,  Chia-Ching TSAI

IPC: F04D27/00 ,  H02P6/16 ,  H02P6/04 ,  F04D25/16 ,  F04D25/06

CPC classification number: F04D27/008 ,  F04D25/166 ,  H02P6/04 ,  H02P6/16

Abstract: A plural-fans driving apparatus includes a controller, a first fan driving circuit, a second fan driving circuit and a protection and input interface circuit. The controller controls the first fan driving circuit to drive a first fan apparatus. The controller controls the second fan driving circuit to drive a second fan apparatus. The protection and input interface circuit is used to protect the first fan driving circuit and the second fan driving circuit. The protection and input interface circuit is a common input interface for the first fan driving circuit and the second fan driving circuit.

公开(公告)号：US09716450B2

公开(公告)日：2017-07-25

申请号：US14896970

申请日：2014-04-03

Applicant: Robert Bosch GmbH

Inventor： Ulrich Vollmer ,  Yanhui Xu

IPC: H02K29/06 ,  H02P6/10 ,  H02K11/21 ,  H02K11/27 ,  H02P6/00 ,  H02P6/16 ,  H02P21/14

CPC classification number: H02P6/10 ,  H02K11/21 ,  H02K11/27 ,  H02P6/001 ,  H02P6/16 ,  H02P21/14

Abstract: The invention relates to an electronically commutated electric motor with a stator and a rotor, which is designed as a permanent magnet rotor in particular. The electric motor also has a control unit which is connected to the stator. The control unit is designed to generate control signals for energizing the stator coils of the stator in order to generate a rotational magnetic field. The electric motor is designed to at least partly compensate for a torque ripple of a torque generated by the rotor. According to the invention, the electric motor has a rotor position sensor and a current sensor. The current sensor is designed to detect currents flowing in the stator coils and to generate a current signal which represents the currents. The control unit preferably has a processing unit which is designed to ascertain harmonics of the electromotive force dependent on the current signal, a voltage applied to the stator coils, and a rotor position signal generated by the rotor position sensor and to generate a control signal which compensates for the effect of the harmonics. The control unit, in particular the processing unit, is designed to superimpose the compensating control signal with the control signal so as to completely or at least partly compensate for the effect of the harmonics and thus the torque ripple.

公开(公告)号：US20170194891A1

公开(公告)日：2017-07-06

申请号：US15465902

申请日：2017-03-22

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Matthew J. Mergener

IPC: H02P29/024 ,  B25F5/00 ,  H02P6/17 ,  G01R19/165

CPC classification number: H02P29/0241 ,  B25D17/00 ,  B25D2250/091 ,  B25D2250/221 ,  B25F5/00 ,  G01R19/165 ,  H02H7/0833 ,  H02P6/14 ,  H02P6/16 ,  H02P6/17

Abstract: A power tool that includes a motor configured to drive a working element, a power supply that is coupled to the motor to provide power to the motor, a shunt circuit that is coupled to the power supply, and a controller. The shunt circuit includes a shunt switch and a shunt element and is configured to hold a voltage of the power supply below a high voltage threshold. The shunt switch is switchable between a conducting state, in which the shunt switch conducts current through the shunt element, and a non-conducting state, in which the shunt switch does not conduct current through the shunt element. The controller is coupled to the motor, the power supply, and the shunt circuit and is configured to determine the voltage of the power supply, and control the shunt switch based on the voltage from the power supply.

公开(公告)号：US20170165561A1

公开(公告)日：2017-06-15

申请号：US15441505

申请日：2017-02-24

Applicant: Stealth Electric Longboards

Inventor： Aaron Paul Rogers

IPC: A63C17/12 ,  B60K7/00 ,  H02K15/14 ,  H02P6/16 ,  B60L11/18 ,  A63C17/01 ,  H02K9/02

CPC classification number: A63C17/12 ,  A63C17/012 ,  A63C17/015 ,  A63C17/223 ,  A63C2203/12 ,  B60K7/0007 ,  B60K2007/0092 ,  B60L11/1803 ,  H02K9/02 ,  H02K15/14 ,  H02P6/16 ,  Y10T29/49009

Abstract: A personal vehicle system including a control system and at least one wheel motor coupled to the personal vehicle system and subject to control by the control system. A control system for a personal vehicle system including steps for calibrating the control system, where the control system includes a sensor system having load sensors incorporated into the personal vehicle system and also having lean forward and lean backward outputs, a user interface that prompts a user to lean forward and backward and allows a user to input a sensitivity value, and an electronic hardware component for calculating a normalization value where the wheel motor current is controlled as a function of the normalization value.

公开(公告)号：US09664499B2

公开(公告)日：2017-05-30

申请号：US14398063

申请日：2013-04-19

Applicant: RENAULT s.a.s.

Inventor： Edouard Negre

IPC: G01R13/00 ,  G01R15/00 ,  H02P23/00 ,  G01B7/30 ,  H02P6/16 ,  G01D5/12 ,  H02P21/32 ,  H02P21/18

CPC classification number: G01B7/30 ,  G01D5/12 ,  H02P6/16 ,  H02P21/18 ,  H02P21/32 ,  H02P2203/03

Abstract: The invention relates to a method for determining the angular offset between the rotor and the stator of an electrical machine for driving a motor vehicle, the rotor being supplied with a rotor-energizing current and voltage, the stator being supplied over three phases with stator-phase currents and voltages, wherein the method includes the following steps: verifying that the electrical machine is stopped; applying a rotor-energizing signal for an amount of time capable of causing the partial magnetization of the rotor; applying a rotor-de-energizing signal capable of causing an active and rapid demagnetization of the rotor, while measuring, during the magnetization, the stator-phase currents and maintaining zero voltage among the phases of the stator; determining the direct stator currents and quadrature stator currents corresponding to the stator-phase currents measured by applying Park and Clarke transforms and in accordance with a measurement of the electrical position of the rotor; determining the maximum values among the direct and quadrature stator currents; transmitting an angular offset fault signal if the absolute value of the maximum quadrature stator signal is greater than a threshold value; determining a correction of the angular offset in radians by calculating the tangent arc of the maximum quadrature stator current value divided by the maximum value of the direct stator current.

公开(公告)号：US20170149311A1

公开(公告)日：2017-05-25

申请号：US15426570

申请日：2017-02-07

Applicant: Johnson Electric S.A.

Inventor： Yue 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: H02K11/33 ,  H02K11/04 ,  H02K11/20

CPC classification number: H02P6/20 ,  G01D5/142 ,  H02K11/044 ,  H02K11/20 ,  H02K11/33 ,  H02P6/16 ,  H02P6/30 ,  H02P7/05 ,  H02P7/295 ,  H02P2207/05 ,  Y02P80/116

Abstract: A motor assembly and an integrated circuit for motor drive. The motor assembly includes a single-phase permanent-magnet synchronous motor capable of being powered by an AC power source and an integrated circuit, wherein the single-phase permanent-magnet synchronous motor comprises a stator and a permanent-magnet rotor capable of rotating relative to the stator, the stator comprises a stator iron core and a stator winding wound on the stator iron core, the integrated circuit comprises: a housing and enabling the single-phase permanent-magnet synchronous motor to be started along a fixed direction when the drive circuit is energized each time.

公开(公告)号：US09660559B2

公开(公告)日：2017-05-23

申请号：US14394628

申请日：2013-04-16

Applicant: Mitsuba Corporation

Inventor： Masaaki Kimura ,  Hiroto Tanaka ,  Tamotsu Iwazaki ,  Tomohiko Annaka ,  Naoki Kojima ,  Junya Kitazawa

IPC: H02P23/12 ,  H02P6/14 ,  B60S1/08 ,  B60S1/16 ,  H02P6/182 ,  H02P23/00 ,  H02P6/08 ,  H02P6/22

CPC classification number: H02P6/153 ,  B60S1/08 ,  B60S1/0818 ,  B60S1/0896 ,  B60S1/166 ,  B60S1/26 ,  H02K7/1166 ,  H02K11/215 ,  H02P6/08 ,  H02P6/16 ,  H02P6/182 ,  H02P6/22 ,  H02P23/009 ,  H02P2207/05

Abstract: A brushless motor comprises: a stator 21 having armature coils 21a, 21b, and 21c; a rotor 22 which is rotated by a revolving magnetic field; and a switching element 30a, wherein the brushless motor has a rotation number control unit 33 which switches between low-speed and high-speed mode, wherein in the low-speed mode, the rotation number control unit 33 supplies current to the armature coils 21a, 21b, and 21c at predetermined energization timing and controls a duty ratio to control the rotation number of the rotor 22, and in the high-speed mode, the rotation number control unit 33 supplies current to the armature coils 21a, 21b, and 21c at energization timing advanced from the energization timing for the low-speed mode, thereby performing field weakening control of weakening the revolving magnetic field from that of the low-speed mode to control the rotation number of the rotor 22.