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公开(公告)号：EP4207567A1
公开(公告)日：2023-07-05
申请号：EP21908091.8
申请日：2021-11-10
发明人： YAO, Yuan , HE, Weichen , ZHANG, Huaisen , LIN, Guiying , GAO, Jinfeng , DAN, Zhimin
摘要： This application discloses an electrical system and an electrical apparatus. The electrical system includes: a first-stage conversion module including a plurality of first controllable switches; a second-stage conversion module including a plurality of second controllable switches; a first digital signal processor configured to control the first controllable switch; and a second digital signal processor configured to control the second controllable switch, where a first output crossbar switch of the first digital signal processor is configured to supply a first internal signal to a first output port, so that the second digital signal processor receives the first internal signal within a preset time through a second input port; and the first internal signal is a fault signal generated in the first digital signal processor. The internal signal of the first digital signal processor can be enabled to be transmitted to the second digital signal processor within a relatively short time, thereby reducing a time interval for triggering a protection action between the two digital signal processors.
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2.发明公开
公开(公告)号：EP4270760A1
公开(公告)日：2023-11-01
申请号：EP21961750.3
申请日：2021-10-27
发明人： WU, Meng , LIN, Guiying , GAO, Jinfeng
摘要： A series-parallel switching method and apparatus, a power conversion circuit, and an electronic device. The power conversion circuit comprises a control unit and two power conversion modules (21, 22). The two power conversion modules (21, 22) are connected in series or in parallel. Any power conversion module (21, 22) comprises an output end (212, 213, 222, 223) and a first switch branch (211, 221); the first switch branch (211, 221) is connected to the output end (212, 213, 222, 223); the output end (212, 213, 222, 223) is adapted to be connected to a load. The first switch branch (211, 221) is connected to a control unit; the first switch branch (211, 221) is configured to switch a working state according to a control signal output by the control unit, so as to provide an energy release loop when the connection between the two power conversion modules (21, 22) is switched from parallel connection to series connection, wherein the working state comprises a stop state and an operation state. By the above mode, the process of switching from the parallel connection to the series connection can be achieved without adding additional modules, the cost of the power conversion circuit is low, and the size is small.
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3.发明公开
公开(公告)号：EP4228133A1
公开(公告)日：2023-08-16
申请号：EP22757195.7
申请日：2022-05-16
发明人： ZHANG, Huaisen , YAO, Yuan , LI, Meng , HE, Weichen , LIN, Guiying , YAN, Yu
摘要： The present application relates to a method and apparatus of power distribution control for power module and a power module device. The method includes: obtaining temperature data of target devices in two or more power modules; analyzing whether the power modules are operating at full power when the temperature data of the target devices meets a preset temperature fault condition; and adjusting operating parameters of the power modules based on the temperature data when the power modules are not operating at full power. By adjusting the operating parameters of the power modules based on the temperature data of the target devices in the power modules, the distribution of power according to the actual requirement is realized, and inconsistent aging among the individual power modules due to significant difference on the generated heat among the individual power modules is avoided, and thus the service lives of the power modules are prolonged.
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公开(公告)号：EP4290754A1
公开(公告)日：2023-12-13
申请号：EP22922604.8
申请日：2022-01-25
发明人： LIN, Guiying , WU, Meng , GAO, Jinfeng
摘要： Embodiments of the present application provide a rectifier control method and device. The method comprises: determining reactive power and active power according to a sampling voltage and a sampling current of a three-phase alternating current signal; determining given active power according to a given voltage and a sampling voltage of a direct current signal; determining a target voltage vector for model prediction control according to the active power, the reactive power, the given active power, and a Hamiltonian dissipation model for injection damping; performing model prediction control according to the target voltage vector to obtain a control signal for a rectifier; and controlling the rectifier according to the control signal. According to the method, the impedance of a power transmission line can be weakened, the stability of a system can be enhanced, and thus the rectifier can be effectively controlled to output a stable current.
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公开(公告)号：EP4250549A1
公开(公告)日：2023-09-27
申请号：EP21958955.3
申请日：2021-09-30
发明人： LIN, Guiying , GAO, Jinfeng , HE, Weichen
IPC分类号： H02M7/12
摘要： The present application provides a method and apparatus for suppressing grid voltage imbalance. By obtaining a 90° lagged grid voltage through a differential tracker, calculating instantaneous power using the 90° lagged grid voltage, and then calculating a power converter voltage according to the instantaneous power, the suppression of grid voltage imbalance is achieved. The function of the differential tracker is to extract differential information from noise-polluted signals, and because the differential of a trigonometric function is in direct proportion to the 90° lag thereof, the 90° lagged grid voltage can be calculated using the differential tracker, and because the use of arrays is eliminated, it is insensitive to grid frequency variations, and its control performance is not affected when the grid frequency fluctuates, and it saves a lot of memory resources.
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公开(公告)号：EP4228138A1
公开(公告)日：2023-08-16
申请号：EP22757819.2
申请日：2022-05-26
发明人： YAO, Yuan , HE, Weichen , LIN, Guiying , ZHANG, Huaisen , GAO, Jinfeng , YAN, Yu
摘要： This application provides a voltage conversion circuit, a charging apparatus, and an electric device, including an N-level conversion unit and N-1 DCDC conversion units. A first input terminal of the M th DCDC conversion unit is connected to the M th output terminal of the N-level conversion unit, a second input terminal of the M th DCDC conversion unit is connected to the (M+1) th output terminal of the N-level conversion unit, and an output level of the M th output terminal of the N-level conversion unit and an output level of the (M+1) th output terminal are adjacent levels; where N ≤ 3 and 1 ≥ M
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公开(公告)号：EP4102708A1
公开(公告)日：2022-12-14
申请号：EP21904632.3
申请日：2021-04-23
发明人： GAO, Jinfeng , LIN, Guiying , HE, Weichen , DAN, Zhimin , HANG, Lijun , HE, Yuanbin , CHEN, Ke , LIAO, Jiarui
摘要： Embodiments of this application provide a converter control method, a converter control apparatus, and a readable storage medium. The control method includes: obtaining a real-time input voltage and a real-time output voltage of a converter; determining a corresponding real-time closed-loop control output value of the converter based on the real-time input voltage and the real-time output voltage by using a preset closed-loop control algorithm; determining a real-time control strategy of a switch tube of the converter from at least three preset control strategies based on the real-time closed-loop control output value; and controlling the switch tube based on the real-time control strategy. The control method is used to implement efficient and high-precision voltage stabilization control.
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