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公开(公告)号：US20240146222A1
公开(公告)日：2024-05-02
申请号：US18279088
申请日：2021-08-31
申请人： Hitachi Astemo, Ltd.
发明人： Hiroaki SATO , Hirokazu MATSUI , Toshisada MITSUI , Kohei MYOEN
CPC分类号： H02P21/18 , H02P21/22 , H02P2207/05
摘要： A drive apparatus of a synchronous motor includes: a current detecting unit that detects a phase current flowing to the synchronous motor; and a magnetic pole position estimating unit that estimates a magnetic pole position of a rotor of the synchronous motor, based on the phase current detected by the current detecting unit. The magnetic pole position estimating unit includes a first peak-to-peak detector that detects a first peak-to-peak value representing a difference between a maximum value and a minimum value of the phase current, a quadrature component detector that detects a quadrature component of the phase current, and a second peak-to-peak detector that detects a second peak-to-peak value representing a difference between a maximum value and a minimum value of the quadrature component. The magnetic pole position estimating unit calculates a first magnetic pole position, based on the first and second peak-to-peak values while the synchronous motor is stopped, and estimates an initial magnetic pole position of the rotor, based on the first magnetic pole position.
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22.发明公开公开(公告)号：US20240136962A1
公开(公告)日：2024-04-25
申请号：US18546558
申请日：2022-03-29
申请人： NIDEC PSA EMOTORS
发明人： Gang YANG , Radu FRATILA
CPC分类号： B60W10/08 , B60W10/26 , H02P21/22 , H02P23/14 , H02P27/045
摘要： The invention relates to a method for selecting a chopping frequency for application thereof to an inverter controlling a rotating electric machine, wherein the chopping frequency is chosen from among multiple predetermined frequencies depending on the position, in a map, of a current operating point of the assembly formed by the electric machine and the inverter, said map having at least the rotational speed (N) of the electric machine or the frequency (Fe) of the electric current applied thereto as parameter. In at least part of the map, the chopping frequency is furthermore chosen based on a parameter representative of a thermal condition of the electronic switches contained in the inverter. The invention furthermore relates to a method for controlling a corresponding inverter, and to a device implementing this method. The invention is preferably applied to an electric motor vehicle.
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公开(公告)号：US20240133398A1
公开(公告)日：2024-04-25
申请号：US18398910
申请日：2023-12-28
发明人： Chaojie SHI , Bayaer EERHEMU , Chaoqiang WU , Shaohua WANG , Xiaowei XIE
CPC分类号： F04D29/588 , F04D13/0646 , H02P21/18 , H02P21/22 , H02P21/34
摘要： Embodiments of this application provide a heating control method and apparatus, an oil pump, and a heat exchange system. The method includes: in a cold state, injecting a heating current into an oil pump motor, where when the oil pump motor is not started, a torque that the heating current is capable of generating is zero, and after the oil pump motor is started, heating power of the heating current is greater than heating power of an energy-saving current, where the energy-saving current is a current capable of enabling a first motor to reach a target operating condition when oil temperature is greater than a preset temperature threshold.
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公开(公告)号：US20240128907A1
公开(公告)日：2024-04-18
申请号：US18046046
申请日：2022-10-12
发明人： Yingfeng Ji , Yang Xu , Michael W. Degner , Jiyao Wang
摘要： Systems and methods for operating an electric drive system for an electric or hybrid vehicle is described. In one example, the drive system is operated by suppling a pulsed torque current command while supplying a zero flux current command. The torque current command and the flux current command make up winding current commands for an electric machine.
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公开(公告)号：US20240120867A1
公开(公告)日：2024-04-11
申请号：US18480575
申请日：2023-10-04
发明人： Youichi MASAKI , Mitsuteru YANO , Eiichi SEKIMOTO , Tsuyoshi OTSUKA , Akihiro TERAMOTO , Teppei ITO , Koji TAKAYANAGI
CPC分类号： H02P21/20 , H02P21/22 , H02P2205/05
摘要： A motor control method for transferring an object to be transferred by a moving object that moves by driving of a motor in a substrate processing apparatus, includes: a data acquisition process of acquiring, at different times, pieces of drive data which relate to the driving of the motor and vary with heat generation of the motor; and a transfer process of transferring the object to be transferred by controlling current to be supplied to the motor, based on each of the pieces of drive data, to compensate for displacement of the object to be transferred from a target transfer position due to the heat generation of the motor.
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公开(公告)号：US20240097594A1
公开(公告)日：2024-03-21
申请号：US18271971
申请日：2021-11-16
申请人： AISIN CORPORATION
发明人： Takeru YAMAMOTO , Yoshiaki USHITA , Tomoya ISHII , Naoki ONOSAKA
IPC分类号： H02P27/08 , H02M7/5387 , H02P21/20 , H02P21/22
CPC分类号： H02P27/08 , H02M7/53871 , H02P21/20 , H02P21/22
摘要： A motor control device includes a control unit configured to cause a current to flow between two terminals out of three terminals of a three-phase motor under PWM control, a first signal information acquisition unit configured to acquire first signal information indicating an on-duty ratio of a PWM control signal in a three-phase energization state after a predetermined period has elapsed since the three-phase motor was started, and a determination unit configured to determine whether the three-phase motor is locked based on the first signal information.
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公开(公告)号：US11936309B2
公开(公告)日：2024-03-19
申请号：US17795576
申请日：2020-05-22
发明人： Yuya Tsuchimoto , Tatsuya Mori , Akira Furukawa , Isao Kezobo , Genki Fujii
CPC分类号： H02P21/0089 , H02P21/22 , B62D5/046 , H02P2207/05
摘要： A permanent-magnet-synchronous electric motor control device includes: a reference voltage value calculation unit for calculating a reference voltage value; an output voltage value calculation unit for calculating an output voltage value on the basis of a voltage command; a current weakening command calculation unit for calculating a current weakening command on the basis of the reference voltage value and the output voltage value; a voltage command calculation unit for calculating the voltage command on the basis of the current weakening command; and a power converter for supplying power to a permanent-magnet-synchronous electric motor on the basis of the voltage command. The current weakening command calculation unit calculates the current weakening command in which a high-frequency component is amplified on the basis of the difference between the reference voltage value and the output voltage value.
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公开(公告)号：US20240083257A1
公开(公告)日：2024-03-14
申请号：US17944642
申请日：2022-09-14
申请人： BorgWarner Inc.
CPC分类号： B60L15/025 , H02P21/22 , H02P27/06 , B60L2240/423
摘要： A control system configured to control a rotating electrical machine of a battery electric vehicle (BEV), having one or more microprocessors that execute a low-efficiency mode of operation for the BEV, such that the low-efficiency mode of operation includes determining a high-efficiency mode current command corresponding to operation at a determined physical rotor angular velocity of a rotor of the rotating electrical machine at a commanded torque value, and increasing current supplied to the rotating electrical machine to a level corresponding to operation at an angular velocity higher than the determined physical angular velocity of the rotor at the commanded torque value.
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公开(公告)号：US11926373B2
公开(公告)日：2024-03-12
申请号：US16963327
申请日：2018-12-17
申请人： Robert Bosch GmbH
发明人： Stefan Ehlert
摘要： The disclosure relates to a method for operating a steering system, wherein the steering system has at least one electrical three-phase machine, at least one control circuit for actuating the electrical three-phase machine and at least one compensation device, which is operatively connected to the control circuit, for reducing a torque ripple of the electrical three-phase machine, wherein at least one compensation parameter of the compensation device is determined. It is proposed that during the determination of the at least one compensation parameter, at least one operating variable correlated with a pre-commutation angle of the electrical three-phase machine and/or with a supply voltage of the electrical three-phase machine is taken into consideration.
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公开(公告)号：US20240055955A1
公开(公告)日：2024-02-15
申请号：US17818824
申请日：2022-08-10
CPC分类号： H02K11/20 , H02K11/35 , G01R31/343 , H02P21/22
摘要： An electric motor monitor having at least one sensor in electrical communication with a memory device and a motor. The memory device is configured to establish a performance baseline of the motor throughout its workload. The signal processing incorporates a memory device such as a microcomputer and/or a programmable logic controller configured to determine the work being performed by the motor by comparing the baseline performance of the motor throughout its work load to at least, the armature amperage of the motor. A wireless system transmits an operating motor's work parameters including, but not limited to, amperage, temperature, vibration, sound, rotation, power, moisture and/or voltage data, to a mobile or fixed base receiver. Data is accessible and viewable in real time. Alerts based on user-defined thresholds of the sensors are sent to an electronic device such as a tablet, a computer, and/or a smart phone.
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