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公开(公告)号：US12132423B2
公开(公告)日：2024-10-29
申请号：US18000902
申请日：2020-06-18
发明人： Tatsuya Mori , Akira Furukawa , Kenta Kubo
CPC分类号： H02P21/05 , B62D5/0409 , B62D5/046 , H02P27/08
摘要： To provide a controller for AC rotary electric machine which can suppress the increase in the unwanted sound while reducing noise. A controller for AC rotary electric machine switches n pieces of zero phase candidate voltage values in order for every switching period and calculate as a zero phase voltage value; by defining a deviation between the zero phase voltage value and a time lag zero phase voltage value delaying by a j times value of the switching period, as a zero phase time lag deviation value; j is a natural number which minimizes a difference between a half period of a mechanical resonance period, and the j times value of switching period; an effective value of the zero phase time lag deviation value becomes small, compared with an effective value of AC component of the zero phase voltage value.
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公开(公告)号：US20240356361A1
公开(公告)日：2024-10-24
申请号：US18304025
申请日：2023-04-20
发明人： Dongxu Li , Minh-Khai Nguyen , Avoki M. Omekanda , Chandra S. Namuduri , Rashmi Prasad , Lei Hao
摘要： An electric vehicle includes a system performing a method of charging a battery of the electric vehicle. The system includes an electrical motor having a rotor and a plurality of windings. The vehicle is turned off to allow the rotor to come to rest at an initial rotor position. The processor controls a current through the motor to rotate the rotor to locate a boundary of an electrical lash region associated with the rotor, determines a selected winding of the plurality of windings having a phase vector located close to the electrical lash region, deactivates the selected winding, controls flow of a first current through the motor with the selected winding deactivated to rotate the rotor towards a direction of the selected winding, and controls flow of a second current from a charging station to the battery through the electric motor with the rotor rotated towards the selected winding.
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公开(公告)号：US12119763B2
公开(公告)日：2024-10-15
申请号：US17979215
申请日：2022-11-02
发明人： Vinod Chowdary Peddi , Cheng Gong , Le Chang , Song He
摘要： A propulsion system for a device includes an electric motor configured to generate torque to propel the device. A controller is in communication with the electric motor and is adapted to select at least one harmonic order for a harmonic current command. The controller is adapted to define a plurality of operating regions, including a first operating region, a second operating region and a third operating region, each associated with a respective objective function for generating the harmonic current command. The controller is adapted to operate the harmonic current command with four degrees of freedom by selectively varying a q-axis current magnitude, a d-axis current magnitude, a q-axis phase and a d-axis phase as a function of the torque and a motor speed.
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公开(公告)号：US20240333183A1
公开(公告)日：2024-10-03
申请号：US18579614
申请日：2021-08-23
发明人： Kota TERAMOTO , Toshiki SUZUKI
CPC分类号： H02P21/18 , B60L15/20 , B61C3/00 , H02P21/22 , B60L2200/26 , H02P2207/05
摘要： A control apparatus includes: a current detection unit detecting rotary machine current flowing to a rotary machine; a position estimation unit calculating an estimate value of a rotor position based on the rotary machine current; a current control unit generating a first voltage command being a command value of rotary machine voltage for driving the rotary machine, based on a detection value of the rotary machine current and the estimate value of the rotor position; a position estimation voltage generation unit generating high-frequency voltage based on rotation information regarding direction of rotation of a rotor, the high-frequency voltage being a position estimation voltage for estimating the rotor position and having frequency higher than frequency of the first voltage command; and a voltage application device applying driving voltage to the rotary machine based on a second voltage command obtained by superimposition of the position estimation voltage on the first voltage command.
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公开(公告)号：US12101052B2
公开(公告)日：2024-09-24
申请号：US17880690
申请日：2022-08-04
发明人： Xinwei Chen , Yuanmiao Zhao , Da Xie , Yiqi Liang , Yizhen Hou , Zhimin Dan
摘要： An electric vehicle control system and a control method, an electric vehicle power-on method, an electric vehicle power-off method, and an electric vehicle charging method are disclosed in this application. The control system includes a domain control unit controlling an electric vehicle, a current sampling unit sampling the current of a power battery and a motor of the electric vehicle and sending sampling signals to the domain control unit, and electrical device, driven by the power battery, sampling the current flowing through it and sending the sampling signals to the domain control unit. The domain control unit, according to the sampling signals sent by the electrical device and the current sampling unit, manages the power battery and controls a motor driver module and the electrical device. The structure of the control system and the control policy are simplified and the power-on and power-off time is shortened.
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6.发明公开公开(公告)号：US20240313679A1
公开(公告)日：2024-09-19
申请号：US18122466
申请日：2023-03-16
申请人： NXP USA, Inc.
发明人： Michal Vidlak , Lukas Gorel , Tomas Kulig
CPC分类号： H02P21/0007 , H02P21/18 , H02P21/22 , H02P2207/05
摘要： A method for Field Oriented Control (FOC) of a Permanent Magnet Synchronous Motor (PMSM) with a constant Power Factor Control (PFC) Loop includes measuring a rotor position of the PMSM. A plurality of stator voltages of the PMSM is controlled with a required direct (d)-axis current, a required quadrature (q)-axis current, the rotor position and a plurality of measured stator currents of the PMSM in a three-phase stationary reference frame. The required d-axis current is determined with a required power factor, the plurality of measured stator currents transformed into two-phase stationary reference frame, the measured stator currents transformed into a rotational reference frame, and each of a required α-axis voltage and a required β-axis voltage transformed into the two-phase stationary reference frame, wherein a power factor of the PMSM is controlled to be equal to the required power factor.
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7.发明公开公开(公告)号：US20240305229A1
公开(公告)日：2024-09-12
申请号：US18419379
申请日：2024-01-22
发明人： Feifan JI , Yanjun LI , Qingyu SONG
CPC分类号： H02P21/14 , H02P21/22 , H02P27/08 , H02P2207/05
摘要： A method and a system for simultaneously realizing current sampling gain and delay compensation. A dummy load is formed from three-phase inductors with star connection to replace a motor load, and a dummy rotation angle is generated by software. In a calibration mode, a standard current sampling element is used for current sampling, and the related calibration parameters in the stable state are stored. Then, in a regulation mode, other current sampling elements produced in batches are used for current sampling, and the delay compensation coefficient and gain compensation coefficient of the sampled current are generated through two closed-loop voltage feedbacks respectively, and the two compensation processes are decoupled from each other and do not affect each other. The present disclosure effectively ensures the accuracy and consistency of current sampling.
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公开(公告)号：US20240297606A1
公开(公告)日：2024-09-05
申请号：US18663065
申请日：2024-05-14
申请人： IHI Corporation
摘要： A controller for a motor device acquires a command signal indicating a target of a drive electric power, sets a first carrier frequency and a second carrier frequency of a carrier signal based on the command signal, and generates a pulse signal to control the drive electric power, based on the command signal and the carrier signal. The carrier signal is set to the first carrier frequency in a first section corresponding to a first phase range in a period of the command signal, and to the second carrier frequency in a second section corresponding to a second phase range other than the first phase range, in which the first carrier frequency is less than the second carrier frequency.
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公开(公告)号：US12081156B2
公开(公告)日：2024-09-03
申请号：US17781162
申请日：2020-10-21
申请人： Robert Bosch GmbH
发明人： Sebastian Paulus , Michele Hirsch , Wei-Lung Lee
摘要： The invention relates to a method (400) for regulating an electric machine (190) comprising a harmonic regulator (100), wherein the harmonic regulator comprises an input transformer (110), a regulator (120), and an output transformer (130). The method has the steps of: ascertaining (410) a feedback variable (Idq); transforming (420) the feedback variable (Idq); ascertaining (430) a regulating deviation; ascertaining (440) an equalization variable (UHrmc*); back-transforming (450) the equalization variable (UHrmc*); and energizing (480) at least one winding of the electric machine (190) on the basis of the actuating variable (UdqHrmc*).
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10.发明公开公开(公告)号：US20240291409A1
公开(公告)日：2024-08-29
申请号：US18573413
申请日：2023-06-07
发明人： Yanfei CAO , Chen LI , Zhanqing ZHOU , Qiang GENG , Tingna SHI , Changliang XIA
CPC分类号： H02P21/0017 , H02P21/13 , H02P21/18 , H02P21/22 , H02P25/03
摘要： The disclosure discloses a nonlinear predicative position control method suitable for a biaxial permanent magnet servo system. In consideration of uncertainty disturbance of the biaxial permanent magnet synchronous motor driving system, a value function for the biaxial permanent magnet synchronous motor driving system and a constraint condition of the value function are constructed, and the value function is solved to obtain a voltage control quantity of the permanent magnet synchronous motor, and the voltage control quantity of the permanent magnet synchronous motor is input into the stator voltage input end of the permanent magnet synchronous motor, thereby realizing the adjustment control of the nonlinear prediction position of the biaxial permanent magnet synchronous motor driving system.
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