公开(公告)号：US12142960B2

公开(公告)日：2024-11-12

申请号：US17839691

申请日：2022-06-14

Applicant: GM Global Technology Operations LLC

Inventor： Mohamed Kamel ,  Muhammad Hussain Alvi ,  Alireza Fatemi ,  Chandra S. Namuduri ,  Rashmi Prasad

IPC: H02J7/00 ,  H02J7/14 ,  H02M1/00 ,  H02P25/022

Abstract: A method and apparatus for electrical energy transfer between a pair of series connected batteries coupled between positive and negative DC rails of a power inverter operatively connected to a plurality of stator phase windings of a stator winding of a motor may include coupling a midpoint of the pair of series connected batteries to the stator winding of the motor, and controlling the power inverter to operate the power inverter and the stator winding as a switched-mode power converter to charge at least one of the stator phase windings from one of the pair of series connected batteries and to discharge the at least one of the stator phase windings to the other of the pair of series connected batteries.

公开(公告)号：US20240372495A1

公开(公告)日：2024-11-07

申请号：US18292713

申请日：2021-07-28

Applicant: Qiping CHU ,  Jianhao ZHANG

Inventor： Qiping CHU ,  Jianhao ZHANG

IPC: H02P21/22 ,  H02P21/14 ,  H02P25/022

Abstract: Disclosed are a method and system of adaptive current control for an alternating-current AC servo motor. The method includes: acquiring an initial three-phase AC motor current; inputting the initial three-phase AC motor current to a current vector [inverse] transformation module to generate first target data; inputting the first target data to a current control loop, and simultaneously taking time derivative of the first target data to generate second target data; and inputting both of the second target data and an output of the current control loop to an incremental dynamic inversion control module, and inputting an output of the incremental dynamic inversion control module to the current vector inverse transformation module. The disclosure eliminates a need of motor model with the controller parameters being tuned, thereby overcoming the technical problems in conventional technologies that motor model identification, particularly online model identification, significantly increases system complexity; the model identification cannot always guarantee correct model and model parameters obtained; and the fuzzy control, sliding mode control, neural network-based control, and model reference adaptation cannot guarantee algorithm stability and stable operation under any operating load interference environment.

公开(公告)号：US20240322726A1

公开(公告)日：2024-09-26

申请号：US18573539

申请日：2023-01-10

Applicant: DeepDrive GmbH

Inventor： Alexander Rosen ,  Christopher Römmelmayer ,  Maximilian Habersbrunner

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

CPC classification number: H02P23/0031 ,  H02M7/487 ,  H02P23/0027 ,  H02P25/022 ,  H02P27/14

Abstract: 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

Applicant: WITTMANN TECHNOLOGY GMBH

Inventor： Tomas KALENDER ,  Klaus BERGKIRCHNER ,  Christoph FRIEDRICH

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

CPC classification number: H02P23/00 ,  H02P25/022 ,  B29C45/76 ,  B29C2945/76033 ,  B29C2945/76525

Abstract: 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

Applicant: Commissariat à l'énergie atomique et aux énergies alternatives

Inventor： Ghislain DESPESSE ,  Jérôme BLATTER

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

CPC classification number: H02P27/06 ,  B60L15/007 ,  H02J7/0063 ,  H02P25/022 ,  B60L2210/30

Abstract: 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

Applicant: Zhongshan Broad-Ocean Motor Co., Ltd.

Inventor： Jinghao LAN ,  Wenqing BIAN

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

CPC classification number: H02P21/24 ,  H02P25/022 ,  H02P27/08 ,  H02P3/18

Abstract: 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

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuya Tanaka ,  Tetsuya Matsuyama

IPC: H02P23/14 ,  H02P25/022

CPC classification number: H02P23/14 ,  H02P25/022

Abstract: 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

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Bing Li ,  Brian J. Seibel

IPC: H02P6/08 ,  H02P25/022

CPC classification number: H02P6/08 ,  H02P25/022 ,  H02P2207/055

Abstract: 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

Applicant: ZHEJIANG UNIVERSITY ADVANCED ELECTRICAL EQUIPMENT INNOVATION CENTER ,  ZHEJIANG UNIVERSITY

Inventor： Zhichen LIN ,  Tingna SHI ,  Zhen ZHANG ,  Changliang XIA

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

CPC classification number: H02P21/14 ,  H02P21/22 ,  H02P21/0003 ,  H02P25/022 ,  H02P27/08

Abstract: 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：US20230038317A1

公开(公告)日：2023-02-09

申请号：US17815264

申请日：2022-07-27

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Marcos A. Donolo ,  Anushka M. Dissanayake ,  Pallavi Kulkarni

IPC: H02P25/022 ,  H02P21/34 ,  H02P1/46 ,  H02P6/08 ,  G01R31/34

Abstract: A system to reconfigure a motor from induction mode to synchronous mode at a zero crossing of the field voltage during startup using only stator current signals is described herein. The zero crossing may be detected by asymmetry induced in the stator currents by a current asymmetry inducing module of the motor. The current asymmetry inducing module may include a resistor and diode in series and in parallel with a discharge resistor of the field windings. Asymmetry is induced in the current obtained from the stator, and used to determine a zero crossing of the field voltage. Upon the rotor reaching a startup frequency and the detected zero-crossing of the field voltage, the motor may be reconfigured from induction mode to synchronous mode.