公开(公告)号：US20240322726A1

公开(公告)日：2024-09-26

申请号：US18573539

申请日：2023-01-10

申请人： DeepDrive GmbH

发明人： Alexander Rosen ,  Christopher Römmelmayer ,  Maximilian Habersbrunner

IPC分类号： H02P23/00 ,  H02M7/487 ,  H02P25/022 ,  H02P27/14

CPC分类号： H02P23/0031 ,  H02M7/487 ,  H02P23/0027 ,  H02P25/022 ,  H02P27/14

摘要： The present invention relates to an electrical drive system for or in a motor-vehicle, having at least one multi-phase electric machine, which has a double rotor, wherein the double rotor is made from flux-guiding material made of solid material, with a three-stage or multi-stage inverter circuit for driving the electric machine, which has: a controllable three-stage or multi-stage inverter coupled to the electric machine on the output side, which is designed to supply the electric machine with an AC voltage, and an operating mode setting device, which is designed to operate the inverter as a function of at least one parameter influencing the overall efficiency of the electrical drive system, selectively in a three-stage or multi-stage operation or in a two-stage operation.

公开(公告)号：US20240235446A1

公开(公告)日：2024-07-11

申请号：US18562728

申请日：2022-05-20

申请人： WITTMANN TECHNOLOGY GMBH

发明人： Tomas KALENDER ,  Klaus BERGKIRCHNER ,  Christoph FRIEDRICH

IPC分类号： H02P23/00 ,  B29C45/76 ,  H02P25/022

CPC分类号： H02P23/00 ,  H02P25/022 ,  B29C45/76 ,  B29C2945/76033 ,  B29C2945/76525

摘要： The invention relates to an injection moulding machine having: an electric machine; multiple switching units electrically connected in parallel, wherein each switching unit has at least one electrical output and at least one electrical switch associated with the output, wherein corresponding outputs of the switching units are electrically connected in parallel with a common output; at least one primary open-loop and/or closed-loop controller which is designed to control the switching units with control signals in order to operate the electric machine; a measuring device for measuring output currents at the outputs; and at least one correction controller which is designed to adjust a corresponding control signal in the event of a deviation between a measured output current at an output and a target value.

公开(公告)号：US20240195340A1

公开(公告)日：2024-06-13

申请号：US18534493

申请日：2023-12-08

申请人： Commissariat à l'énergie atomique et aux énergies alternatives

发明人： Ghislain DESPESSE ,  Jérôme BLATTER

IPC分类号： H02P27/06 ,  B60L15/00 ,  H02J7/00 ,  H02P25/022

CPC分类号： H02P27/06 ,  B60L15/007 ,  H02J7/0063 ,  H02P25/022 ,  B60L2210/30

摘要： A power supply system includes a main power supply system generating, from a main network, at least one polyphase voltage for supplying at least one load. Each load includes a winding for each phase. The windings are connected in star connection at a midpoint. An auxiliary power supply system of an auxiliary network includes a first power supply terminal and a second power supply terminal. The main power supply system is configured to generate the at least one polyphase voltage with at least one non-zero homopolar component. The auxiliary power supply system includes a module for connecting the first power supply terminal to the midpoint and the second power supply terminal to a reference point, for supplying the auxiliary network via at least one homopolar component coming from the midpoint.

公开(公告)号：US20240056009A1

公开(公告)日：2024-02-15

申请号：US18382039

申请日：2023-10-19

申请人： Zhongshan Broad-Ocean Motor Co., Ltd.

发明人： Jinghao LAN ,  Wenqing BIAN

IPC分类号： H02P21/24 ,  H02P25/022 ,  H02P27/08 ,  H02P3/18

CPC分类号： H02P21/24 ,  H02P25/022 ,  H02P27/08 ,  H02P3/18

摘要： A method for controlling operation of a permanent-magnet synchronous motor includes: during operation of the permanent-magnet synchronous motor, receiving, by the permanent-magnet synchronous motor, a shutdown signal from an external device; uninterruptedly outputting, by a microcontroller unit (MCU), a deceleration pulse to an inverter, instead of directly blocking a PWM pulse to the inverter, and constantly monitoring a control signal sent by the external device; during a deceleration process, when the MCU receives a new startup signal and a real-time speed Vi of the permanent-magnet synchronous motor is greater than or equal to a reference speed Vref, controlling the permanent-magnet synchronous motor to rotate at a parameter approaching to a target torque T or a target speed V corresponding to the new startup signal; and blocking, by the MCU, the PWM pulse when the real-time speed Vi of the permanent-magnet synchronous motor is lower than the reference speed Vref.

公开(公告)号：US11837982B2

公开(公告)日：2023-12-05

申请号：US17724308

申请日：2022-04-19

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Yuya Tanaka ,  Tetsuya Matsuyama

IPC分类号： H02P23/14 ,  H02P25/022

CPC分类号： H02P23/14 ,  H02P25/022

摘要： A rotary machine control device includes: a flux estimator that estimates a rotary machine flux; a command amplitude specifier that generates a command amplitude that is an amplitude of a command flux, by executing feedback control using a product of an estimated flux or an estimated magnet flux and a detected current; a command flux specifier that generates the command flux using the command amplitude; and a switcher that controls switching from a current synchronous operation to a flux control operation. When the switcher controls switching to the flux control operation, the flux estimator gives, to the feedback control, an amplitude of the estimated flux estimated before switching to the flux control operation, as an initial value of the command amplitude immediately after switching to the flux control operation.

公开(公告)号：US11671037B1

公开(公告)日：2023-06-06

申请号：US17737826

申请日：2022-05-05

申请人： Rockwell Automation Technologies, Inc.

发明人： Bing Li ,  Brian J. Seibel

IPC分类号： H02P6/08 ,  H02P25/022

CPC分类号： H02P6/08 ,  H02P25/022 ,  H02P2207/055

摘要： For improving Maximum Torque per Amps (MTPA) control, a method generates an offline MTPA curve based on an autotune test for a motor, which is used as offline MTPA control in order to run a motor at a high efficiency operation point. Another online method generates a search zone for the MTPA curve for a given torque point. The search zone includes an upper D-axis reference current and a lower D-axis reference current for the given torque point. The method iteratively modifies a D-axis reference current between the upper D-axis reference current and the lower D-axis reference current of the search zone. The method modifies a Q-axis reference current to output the given torque. The method updates a corresponding current pair of the given torque point to the modified D-axis reference current and the modified Q-axis reference current with a lowest current amplitude to improve MTPA control of the motor.

公开(公告)号：US20230163704A1

公开(公告)日：2023-05-25

申请号：US17793935

申请日：2021-08-03

申请人： ZHEJIANG UNIVERSITY ADVANCED ELECTRICAL EQUIPMENT INNOVATION CENTER ,  ZHEJIANG UNIVERSITY

发明人： Zhichen LIN ,  Tingna SHI ,  Zhen ZHANG ,  Changliang XIA

IPC分类号： H02P21/14 ,  H02P21/22 ,  H02P21/00 ,  H02P25/022 ,  H02P27/08

CPC分类号： H02P21/14 ,  H02P21/22 ,  H02P21/0003 ,  H02P25/022 ,  H02P27/08

摘要： The invention discloses a control method for balancing scaling errors of multiple current sensors for PMSM. An impedance network is set between a direct current power supply and a three-phase inverter connected to a PMSM to avoid positive and negative poles of the direct current power supply being short-circuited under actions of shoot-through vectors. Under actions of two shoot-through vectors in a PWM cycle, three-phase current sensors are used to respectively sample the sum of currents in each branch of three-phase output branches of the three-phase inverter and a branch of the same bridge arm of the three-phase inverter, according to the sampled currents, operating to obtain the relationship between the scaling error coefficients of the three-phase current sensors. Then, correction coefficients are calculated. The correction of the scaling errors of the current sensors is implemented using correction coefficient feedback control.

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：US20180167009A1

公开(公告)日：2018-06-14

申请号：US15813690

申请日：2017-11-15

申请人： KONICA MINOLTA, INC.

发明人： Daichi SUZUKI ,  Yuta TACHIBANA ,  Hiroyuki YOSHIKAWA ,  Yasuhiro KOIDE

IPC分类号： H02P21/18 ,  H02P6/18 ,  H02P6/185 ,  H02P21/34 ,  H02P6/17

CPC分类号： H02P21/18 ,  H02P6/17 ,  H02P6/185 ,  H02P6/186 ,  H02P21/34 ,  H02P25/022

摘要： A controller for a sensorless permanent magnet synchronous motor having a rotor using a permanent magnet, the rotor rotating by a rotating magnetic field, caused by a current flowing through an armature is provided. The controller is configured to apply a pulse voltage for generating a magnetic field vector for searching for the initial position to each of search sections obtained by dividing a target range, narrow down a target range in such a manner that a search section in which a largest amount of current flows through the armature by application of the pulse voltage is selected as a subsequent target range, and repeat the application processing and the narrow-down processing to estimate the initial position.

公开(公告)号：US20180138842A1

公开(公告)日：2018-05-17

申请号：US15812192

申请日：2017-11-14

申请人： Johnson Electric S.A.

发明人： Chiping SUN ,  Xiuwen YANG ,  Shinghin YEUNG ,  Shujuan HUANG ,  Yunlong JIANG

IPC分类号： H02P6/182 ,  H02P6/30 ,  H02P27/06 ,  H02P27/16 ,  H02P6/08 ,  H02P6/26

CPC分类号： H02P6/182 ,  G01D5/142 ,  G01D5/145 ,  H02M7/06 ,  H02P6/085 ,  H02P6/16 ,  H02P6/26 ,  H02P6/30 ,  H02P23/24 ,  H02P25/022 ,  H02P25/024 ,  H02P27/06 ,  H02P27/16

摘要： A motor and a driving circuit thereof are provided. The motor driving circuit includes a controllable bidirectional AC switch connected with a winding of the motor between two terminals of an AC power supply; and first and second position sensors. The first position sensor and the second position sensor are respectively configured to detect positions of magnetic poles of the rotor. The first position sensor and the second position sensor output magnetic pole position signals having opposite phases when detecting a same magnetic pole of the rotor. At a rest position of the motor, the first position sensor and the second position sensor are respectively arranged with an advance angle with respect to a connection line crossing centers of opposite magnetic poles of the rotor, to make the motor have large starting torque.