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公开(公告)号：US11962231B2
公开(公告)日：2024-04-16
申请号：US17821811
申请日：2022-08-24
发明人： Weichen He , Jinfeng Gao , Zhimin Dan , Yizhen Hou
CPC分类号： H02M1/0025 , H02M1/0006 , H02M1/0009 , H02M1/32 , H02M7/53803
摘要： A control method and device of a voltage converter and a voltage control system are provided. In some embodiments, the control device includes a first control module configured to obtain a current reference value according to an output voltage of a voltage converter and a given voltage value; a current modulation module configured to reduce the current reference value when an output current of a voltage converter is greater than a first current threshold; and a second control module configured to control the output current of a voltage converter according to the reduced current reference value and an output current.
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公开(公告)号：US11251720B1
公开(公告)日：2022-02-15
申请号：US17485554
申请日：2021-09-27
发明人： Weichen He , Zhimin Dan , Jinfeng Gao , Yizhen Hou
摘要： This application provides a method and an apparatus for controlling a grid-tie inverter. The method includes: acquiring an output voltage of the grid-tie inverter and an output current value of the grid-tie inverter at a current moment; calculating N output current values of the grid-tie inverter at a next moment that is in one-to-one correspondence to N switch states of the grid-tie inverter based on the output current value at the current moment, and N is a natural number greater than or equal to 2; acquiring a first reference current based on the output voltage; acquiring a second reference current based on the output current and the first reference current; determining a first switch state; and controlling the grid-tie inverter to perform power transmission in the first switch state at the next moment.
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公开(公告)号：US20230044189A1
公开(公告)日：2023-02-09
申请号：US17821811
申请日：2022-08-24
发明人： Weichen He , Jinfeng Gao , Zhimin Dan , Yizhen Hou
摘要： A control method and device of a voltage converter and a voltage control system are provided. In some embodiments, the control device includes a first control module configured to obtain a current reference value according to an output voltage of a voltage converter and a given voltage value; a current modulation module configured to reduce the current reference value when an output current of a voltage converter is greater than a first current threshold; and a second control module configured to control the output current of a voltage converter according to the reduced current reference value and an output current.
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公开(公告)号：US20240258787A1
公开(公告)日：2024-08-01
申请号：US18636313
申请日：2024-04-16
发明人： Jinbiao Li , Yu Yan , Zhimin Dan
IPC分类号： H02H3/08
CPC分类号： H02H3/08
摘要： A circuit control method is provided, in which a control module receives a target control instruction for pre-charging a target. The control module may be configured to select a main switch unit (Main-SU) and an auxiliary switch unit (Aux-SU) associated with the target, and control the Aux-SU to be in a continuous-on state. The control module may then control a semiconductor switch unit (Semi-SU) to be in an intermittent-on state to allow pre-charging of the target via the Semi-SU and the Aux-SU. After the target is pre-charged, the control module may control the Main-SU to be in an on-state, and control the Aux-SU and then the Semi-SU to be in an off-state.
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公开(公告)号：US11548405B2
公开(公告)日：2023-01-10
申请号：US17486960
申请日：2021-09-28
发明人： Xiaojian Huang , Zhimin Dan , Bao Li , Xiyang Zuo
IPC分类号： B60L58/12 , H01M10/615 , H01M10/63 , B60L50/51 , G01R31/382 , H01M10/625
摘要： The embodiments of the present application provide a current modulation module, a parameter determination module, a battery heating system, as well as a control method and a control device thereof, and relate to the field of battery. The control method includes determining a state of charge (SOC), of the battery, modulating a first current flowing into windings of a motor into an alternating current when the SOC is greater than a first SOC threshold, so as to use heat generated by the alternating current in a first target module to heat the battery, and modulating a second current flowing into the windings of the motor into a direct current when the SOC is less than or equal to the first SOC threshold, so as to use heat generated by the direct current in a second target module to heat the battery.
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6.发明授权公开(公告)号：US11309826B2
公开(公告)日：2022-04-19
申请号：US17529511
申请日：2021-11-18
发明人： Xiaojian Huang , Xiyang Zuo , Zhimin Dan , Bao Li
摘要： A method and an apparatus for controlling a permanent magnet motor, a power system and an electric vehicle. A power frequency of the permanent magnet motor is set by obtaining system parameters such as a resonance bandwidth of the permanent magnet motor and a natural frequency of a stator of the permanent magnet motor, and the permanent magnet motor is supplied power by using alternating current at the power frequency when a power battery meets a self-heating condition. Noises generated by the motor is reduced during a self-heating process of the power battery.
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