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公开(公告)号：US12068710B2
公开(公告)日：2024-08-20
申请号：US17903134
申请日：2022-09-06
申请人： DENSO CORPORATION
发明人： Shinsuke Kawadu
IPC分类号： H02P29/032 , B60R16/023 , H02P5/50 , H02P29/028
CPC分类号： H02P29/032 , B60R16/0232 , H02P5/50 , H02P29/028
摘要： An abnormality diagnosis system configured to diagnose an abnormality of an electric drive system mounted on a mobile body to drive a motor for moving the mobile body, includes: an information acquisition unit configured to acquire a motor output information which is information related to an output state of the motor; an output state determination unit configured to determine whether the output state of the motor is in a low output state that does not contribute to a movement of the mobile body by using the motor output information; and a diagnosis execution unit configured to diagnose an abnormality of the electric drive system when it is determined that the motor is in the low output state.
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公开(公告)号：US20240204702A1
公开(公告)日：2024-06-20
申请号：US18594249
申请日：2024-03-04
申请人： DENSO CORPORATION
发明人： Yoshihiro NAKASHIMA , Yasuaki AOKI
摘要： A control apparatus of a rotating electric machine is applicable to a control system that includes: a plurality of power conversion circuits that convert direct-current power from a direct-current power supply to alternating-current power and output the alternating-current power by switching operations; rotating electric machines that are provided in correspondence to the power conversion circuits and supplied with the alternating-current power outputted from the power conversion circuits; and a capacitor that is connected in parallel to the direct-current power supply, provided on an input side of the power conversion circuits, and common to the power conversion circuits. The control apparatus includes: an adjusting unit that performs an adjustment process in which output modes of voltage vectors to the rotating electric machines are adjusted and an operating unit that performs the switching operations of the power conversion circuits to output the voltage vectors adjusted by the adjusting unit.
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公开(公告)号：US11973453B2
公开(公告)日：2024-04-30
申请号：US17660817
申请日：2022-04-26
发明人： Hiroki Tomizawa , Masaharu Yamashita , Kenji Shibata , Yosuke Yamashita , Shoji Kubota , Yugo Nagashima , Yuji Fujita , Kenichi Abe
摘要： A first actuator and a second actuator each have a plurality of control calculation units provided redundantly and a plurality of motor drive units provided redundantly. In the first and the second actuators, the control calculation units of the systems paired with each other transmit and receive information to and from each other by a communication between the actuators. When a failure occurs in any system in either of the two actuators, or when a failure occurs in a communication between actuators in either system, the control calculation unit of each actuator of the system in which the failure occurred stops the motor drive control. Then, the motor drive control is continued by the control calculation unit of the normal system in both actuators.
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公开(公告)号：US11787294B1
公开(公告)日：2023-10-17
申请号：US17141466
申请日：2021-01-05
发明人： Abhay Gupta
CPC分类号： B60L15/2009 , B60K1/02 , G05D1/0088 , G05D1/0212 , H02P5/50 , B60L2240/10 , B60L2240/423 , B60L2240/429 , G05D1/0231 , G05D1/0257
摘要： An autonomous mobile device (AMD) operating in a first mode moves within a physical space to perform various tasks such as displaying information on a screen, following a user, and so forth. The first mode may involve the AMD moving or maintaining a particular pose. While the AMD is in the first mode, a user may apply an external force to the AMD to reposition the AMD to a desired pose. Application of this external force on the AMD is detected and results in the AMD transitioning to a second mode in which the AMD may be repositioned. While in the second mode, the user may reposition the AMD. The second mode may constrain the magnitude of the resulting movement, preventing the user from moving the AMD too quickly which could damage components within the AMD. Once the external force ceases, the AMD may transition back to the first mode.
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公开(公告)号：US20230271507A1
公开(公告)日：2023-08-31
申请号：US18113315
申请日：2023-02-23
CPC分类号： B60L15/2036 , B60L50/00 , B60K1/02 , H02P5/50
摘要： A vehicle includes: a plurality of wheels; a plurality of rotary electric machines, each configured to generate a driving force or a braking force for one of the plurality of wheels independently from other rotary electric machines; a power storage device configured to exchange electric power with the plurality of rotating electric machines; a processor configured to calculate a required torque of each of the plurality of wheels; a rotational speed detecting sensor configured to detect a rotational speed of each of the plurality of wheels; and a controller configured to calculate a power distribution ratio that is a distribution ratio of electrical power from the power storage device to the plurality of rotating electric machines based on the required torque of each of the plurality of wheels and the rotational speed of each of the plurality of wheels.
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公开(公告)号：US11652427B2
公开(公告)日：2023-05-16
申请号：US17677063
申请日：2022-02-22
发明人： Stephen Minshull , Grzegorz Popek
摘要： A system for providing electric motor control to a plurality of motor loads. The system comprises a plurality of motor controllers that are configurable into different arrangements of motor controllers. The system further comprises a central controller that is operable to individually set a phase and/or frequency of respective PWM carrier signals for the motor controllers, wherein the central controller is configured to set the phase and/or frequency of the PWM carrier signals for the motor controllers within a respective arrangement of motor controllers differently depending on the configuration of the motor controllers within the arrangement.
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公开(公告)号：US20230124500A1
公开(公告)日：2023-04-20
申请号：US18084550
申请日：2022-12-20
申请人： ZHEJIANG UNIVERSITY
发明人： Yan YAN , Shujing LI , Zhen ZHANG , Tingna SHI , Peng SONG
摘要： A method for model predictive current control of a two-motor torque synchronization system, which belongs to the field of power electronics and motor control. The present disclosure takes an indirect matrix converter and a two-motor system which are coaxially and rigidly connected as a target, and takes two-motor torque synchronization performance and current tracking performance as main control objectives. A two-motor unified prediction model is established and a value function based on free components of error items is configured so as to solve the problems in which when model predictive current control is performed on a two-motor system, setting of a value function weighting coefficient needs to be performed manually, and consequently the setting process is complicated and an erroneous switch state combination is likely to be selected.
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公开(公告)号：US20220411091A1
公开(公告)日：2022-12-29
申请号：US17778148
申请日：2020-12-09
摘要： A system (11) for balancing at least one parameter to be balanced of an electric motor of a propulsion system (1), in particular of an aircraft, includes at least two electric motors (3, 4) and a propulsion member (2) driven in rotation by said electric motors. The balancing system is configured to calculate a correction of the speed setpoint (Corr_Cons_VI, Corr_Cons_V2) as a function of a correction factor (F1, F2) of the speed setpoint depending on a parameter (P1, P2) of the associated electric motor that is intended to be balanced and on a speed setpoint (Cons_VH) of the propulsion member (2).
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公开(公告)号：US11456684B2
公开(公告)日：2022-09-27
申请号：US17270889
申请日：2018-11-02
发明人： Yasuhiko Wada , Akihiro Tsumura
摘要： An electric motor control device that drives and controls a plurality of electric motors connected in parallel, includes: a power conversion device; a current detection device; and a controller that includes a first control unit to perform first control on each of the plurality of electric motors based on the electric current, a second control unit to perform second control of controlling the plurality of electric motors such that an estimated speed of each of the plurality of electric motors obtained based on the current value follows the speed command value, and a switching determination unit to perform switching determination processing of switching between the first control performed by the first control unit and the second control performed by the second control unit according to drive information on at least one or more of the plurality of electric motors.
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公开(公告)号：US20220271689A1
公开(公告)日：2022-08-25
申请号：US17677063
申请日：2022-02-22
发明人： Stephen MINSHULL , Grzegorz POPEK
摘要： A system for providing electric motor control to a plurality of motor loads. The system comprises a plurality of motor controllers that are configurable into different arrangements of motor controllers. The system further comprises a central controller that is operable to individually set a phase and/or frequency of respective PWM carrier signals for the motor controllers, wherein the central controller is configured to set the phase and/or frequency of the PWM carrier signals for the motor controllers within a respective arrangement of motor controllers differently depending on the configuration of the motor controllers within the arrangement.
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