公开(公告)号：US11639819B2

公开(公告)日：2023-05-02

申请号：US16852217

申请日：2020-04-17

申请人： Rocky Research

发明人： Kaveh Khalili ,  Uwe Rockenfeller

IPC分类号： F25B49/02 ,  H02P21/00 ,  F24F11/83 ,  F24F11/30 ,  F25B7/00 ,  F25B13/00 ,  H02P21/36 ,  H02P21/34 ,  F24F110/20 ,  F24F11/85 ,  F24F11/46 ,  F24F110/10

摘要： A vector control system is used to control a vapor compression circuit. The vector control system may monitor the vapor compression circuit and adjust the speed of one or more motors to increase efficiency of the system by taking into account the torque forces placed on a compressor motor.

公开(公告)号：US11616460B1

公开(公告)日：2023-03-28

申请号：US17674369

申请日：2022-02-17

申请人： GUIZHOU UNIVERSITY

发明人： Shaohua Luo ,  Shaobo Li ,  Junyang Li ,  Guanci Yang ,  Junxing Zhang

IPC分类号： H02P21/00 ,  H02P21/14 ,  H02J3/38 ,  H02P101/15 ,  H02P103/20

摘要： A fuzzy finite-time optimal synchronization control method for a fractional-order permanent magnet synchronous generator, and belongs to the technical field of generators. A synchronization model between fractional-order driving and driven permanent magnet synchronous generators with capacitance-resistance coupling is established. The dynamic analysis fully reveals that the system has rich dynamic behaviors including chaotic oscillation, and a numerical method provides stability and instability boundaries. Then, under the framework of a fractional-order backstepping control theory, a fuzzy finite-time optimal synchronous control scheme which integrates a hierarchical type-2 fuzzy neural network, a finite-time command filter and a finite-time prescribed performance function is provided.

公开(公告)号：US11594993B2

公开(公告)日：2023-02-28

申请号：US17052574

申请日：2018-07-18

申请人： Mitsubishi Electric Corporation

发明人： Akane Hongyo ,  Kenji Takahashi ,  Kazunori Hatakeyama ,  Akira Satake

IPC分类号： H02P25/18 ,  H02P25/022 ,  H02P25/24 ,  H02P21/00

摘要： A controller includes: a connection switch that switches a connection state of a winding of a synchronous motor during a rotating operation of the synchronous motor; a current detector that detects a rotary machine current flowing in the synchronous motor; a position/speed estimator that estimates a magnetic pole position and speed of a rotor; a voltage applicator that applies a voltage to the synchronous motor; and a control circuitry that generates a voltage command given to the voltage applicator on the basis of the magnetic pole position and the speed, and outputs a switching operation command for switching the connection state to the connection switch. The control circuitry generates the voltage command to bring the rotary machine current close to zero before the connection state of the winding is switched.

公开(公告)号：US20230050472A1

公开(公告)日：2023-02-16

申请号：US17873198

申请日：2022-07-26

申请人： SKF Magnetic Mechatronics

发明人： Stephane Marie Turpault ,  Salim Benbouzid

IPC分类号： H02P29/64 ,  H02P21/14 ,  H02P21/00

摘要： A method for estimating the temperature of a stator coil of a magnetic suspension bearing of a rotor that is connected by connection wires to circuits for servo-controlling the position of the rotor includes the following steps: measuring the electric voltage at the terminals of the connection wires of the stator coil; measuring the intensity of the current passing through the stator coil; estimating the electric resistance of the stator coil and of the connection wires on the basis of an adaptive filter, the measured electric voltage and the intensity of the measured current; and estimating the temperature of the coil on the basis of the value of the estimated resistance.

公开(公告)号：US20220399843A1

公开(公告)日：2022-12-15

申请号：US17789921

申请日：2020-12-09

申请人： FUJITSU GENERAL LIMITED

发明人： Masaharu URAYAMA ,  Yuki SAITO

IPC分类号： H02P21/05 ,  H02P21/20 ,  H02P21/00 ,  H02P21/22

摘要： A motor control device capable of improving damping effects of a motor. In a motor control device, a control switching determination unit determines whether or not a control region of a motor is in a voltage saturation region. A voltage command value generator generates a voltage command value of the motor based on a velocity command value and a velocity of the motor. When the control switching determination unit determines that the control region of the motor is in the voltage saturation region, the voltage command value generator determines a voltage vector angle of an output voltage applied to the motor from a total torque command value and a limit value of the maximum voltage capable of being output to the motor, and generates a voltage command value based on the voltage vector angle.

公开(公告)号：US11527981B2

公开(公告)日：2022-12-13

申请号：US16505578

申请日：2019-07-08

申请人： SHIMANO Inc.

发明人： Tomohiro Kondo

IPC分类号： H02P23/00 ,  B62M6/45 ,  H02P21/00 ,  B62K23/00 ,  G05B13/04

摘要： A human-powered vehicle control device includes an artificial intelligence processor, an operation device, and a communication device. The artificial intelligence processor is configured to generate second information for controlling an electric component of a human-powered vehicle in accordance with first information related to at least one of the human-powered vehicle, a rider of the human-powered vehicle, and an environment of the human-powered vehicle. The operation device operates the electric component. The communication device is configured to communicate with an external device. The artificial intelligence processor is configured to change a process for generating the second information in accordance with the first information and an operation of the operation device. The communication device is configured to transmit third information related to a process for generating the second information to the external device.

公开(公告)号：US11515818B2

公开(公告)日：2022-11-29

申请号：US17200194

申请日：2021-03-12

申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

发明人： Aboubakr Salem ,  Mohamed Ali Abido ,  Mohamed Mamdouh

IPC分类号： H02P21/00 ,  H02P21/30 ,  H02P21/14 ,  H02P21/20 ,  H02P27/06 ,  H02K11/33

摘要： Reduced computation time for model predictive control (MPC) of a five level dual T-type drive considering the DC link capacitor balancing, the common-mode voltage (CMV) along with torque control of an open-ends induction motor based on determining a reduced set of switching states for the MPC. The reduced set of switching states are determined by considering either CMV reduction (CMVR) or CMV elimination (CMVE). Cost function minimization generates a voltage vector, which is used to produce gating signals for the converter switches. The reduced switching state MPC significantly reduces computation time and improves MPC performance.

公开(公告)号：US20220329188A1

公开(公告)日：2022-10-13

申请号：US17631386

申请日：2020-08-18

申请人： Cummins Inc.

发明人： Akm Arafat ,  Bradford K. Palmer ,  Dakshina S. Murthy-Bellur

IPC分类号： H02P21/00 ,  H02P25/22 ,  H02P29/028

摘要： A method of controlling a multi-phase electric machine includes implementing a first control method to control the operation of a six-phase machine that is configured as a combination of two three-phase machines. The method also includes determining whether a fault exists in the six-phase machine. In response to determining that the fault exists in the six-phase machine, the method includes implementing a second and different control method to control the operation of the six-phase machine.

公开(公告)号：US11431216B1

公开(公告)日：2022-08-30

申请号：US16926622

申请日：2020-07-10

申请人： Turboroto, Inc.

发明人： Ping Li

IPC分类号： H02P21/00 ,  H02K3/28 ,  H02K23/28 ,  H02K3/12 ,  H02P6/16 ,  H02P6/12

摘要： A direct current (DC) electric motor assembly with a closed type overlap stator winding which is commutated with a timed commutating sequence that is capable of generating a stator rotating magnetic field. The coil overlap of the winding and a timed commutation sequence are such that the current in each slot of the stator is additive and when a previous magnetic pole collapses according to a commutation sequence; the energy released by that previous collapsing magnetic field is captured to strengthen the next magnetic field on the commutation sequence schedule. Electrical currents produced by the collapsing magnetic fields flow to low electric potential and add or subtract to the DC current provided by the commutator thus promoting formation of the next magnetic on commutation schedule. When used with a suitable commutator and rotor, the electric motor assembly provides a true brushless high torque speed controlled Real Direct Current (RDC) motor that operates with higher efficiency and higher power density.

公开(公告)号：US20220255488A1

公开(公告)日：2022-08-11

申请号：US17629900

申请日：2020-07-27

申请人： Valeo Siemens eAutomotive Germany GmbH

发明人： Panagiotis Mantzanas ,  Daniel Kübrich ,  Thomas Dürbaum ,  Alexander Bucher ,  Alexander Pawellek ,  Christian Hasenohr ,  Harald Hofmann

IPC分类号： H02P27/08 ,  H02M7/5395 ,  H02P6/08 ,  H02P21/00

摘要： A control device (8) for an inverter (2) that feeds an electric machine (3), wherein the control device (8) is configured to provide pulse-width-modulated switching signals (15) at a carrier frequency to drive switching elements (12) of the inverter (2), wherein the control device (8) is configured to ascertain the carrier frequency within at least one operating range (22, 23) depending on a piece of operating point information that describes an operating point defined by a rotation speed and a torque of the electric machine (3) in such a way that the carrier frequency is reduced within the at least one operating range (22, 23) compared to a maximum carrier frequency operating point at which a maximum carrier frequency is specified in the operating range.