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1. 发明公开

EP4362265A3 GRID-CONNECTED PHOTOVOLTAIC INVERTER AND GRID-CONNECTED CONTROL METHOD 审中-实审
公开(公告)号：EP4362265A3
公开(公告)日：2024-06-12
申请号：EP23205558.2
申请日：2023-10-24
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： XU, Fei , YU, Xinyu , ZHAO, Mingquan , QU, Zisen , XIN, Kai
IPC分类号： H02J3/38 , H02M1/32 , H02M7/537 , H02M7/5387
CPC分类号： Y02E10/56 , H02J3/381 , H02J2300/2420200101 , H02M7/537 , H02M1/32 , H02M1/0025
摘要： This application provides a grid-connected photovoltaic inverter and a grid-connected control method. The photovoltaic inverter includes a control circuit and an inverter circuit. The control circuit is configured to: when a current value of the grid-connected point is greater than or equal to a current amplitude limiting value, obtain an active voltage adjustment amount and/or a reactive voltage adjustment amount based on the current value of the grid-connected point, the current amplitude limiting value, and a voltage value of the grid-connected point, and control an output voltage of the inverter circuit to be a target voltage value based on the active voltage adjustment amount and/or the reactive voltage adjustment amount, to reduce the current value of the grid-connected point by reducing active power and/or reactive power output by the photovoltaic inverter. A voltage value of a target voltage is the target voltage value. According to an application scenario, current limiting may be separately performed on an active current and a reactive current at a grid-connected point in this application. This maintains system stability, and improves system security Response is quick, the control method is simple, and applicability is high.

2. 发明公开

EP4309278A1 CONVERTER FOR POWER CONVERSION, THREE-PHASE CONVERTER ARRANGEMENT AND METHOD FOR PACKAGING A CONVERTER 审中-实审
公开(公告)号：EP4309278A1
公开(公告)日：2024-01-24
申请号：EP21938421.1
申请日：2021-04-29
申请人： Huawei Technologies Co., Ltd.
发明人： WIJEKOON, Piniwan Thiwanka Bandara , ROSADO, Sebastian , WANG, Zhaohui
IPC分类号： H02M7/487 , H02M7/537 , H02M7/217

3. 发明授权

EP4064502B1 PHOTOVOLTAIC SYSTEM AND LEAKAGE CURRENT CONTROL METHOD FOR PHOTOVOLTAIC SYSTEM 有权
公开(公告)号：EP4064502B1
公开(公告)日：2023-10-04
申请号：EP22164683.9
申请日：2022-03-28
发明人： Meng, Xiaoqian , Guo, Haibin , Gao, Yongbin
IPC分类号： H02S50/00 , H02M7/537 , H02J3/38 , H02S20/10 , H02S30/10

4. 发明公开

EP4250545A1 POWER CONVERTER 审中-实审
公开(公告)号：EP4250545A1
公开(公告)日：2023-09-27
申请号：EP21896476.5
申请日：2021-09-10
申请人： Huawei Technologies Co., Ltd.
发明人： PAN, Liwen , FENG, Hui , WANG, Deyuan
IPC分类号： H02M1/10 , H02M3/335 , H02M7/537
摘要： This application provides a power converter, which relates to the field of automobiles and may be applied to various electric vehicles. The power converter includes one input interface, a plurality of power modules, and a plurality of output interfaces. The plurality of power modules include a high-voltage bidirectional direct current module, a low-voltage direct current module, a bidirectional alternating current module, and an industrial electrical power module. Input ends of the plurality of power modules are all electrically connected to the input interface, and the input interface is electrically connected to a battery pack of the vehicle. Output ends of the plurality of power modules are independent of each other, the output ends of the plurality of power modules are electrically connected to the plurality of output interfaces in a one-to-one correspondence, and the output interfaces are electrically connected to a power device or a charging device other than the vehicle. The power converter provided in embodiments of this application can have functions of various power modules, and can provide or obtain various types of electrical energy, thereby extending a wider application scope, and facilitating charging and power supply.

5. 发明授权

EP3651339B1 INVERTER DEVICE AND ELECTRIC POWER STEERING DEVICE 有权
公开(公告)号：EP3651339B1
公开(公告)日：2022-09-14
申请号：EP17916826.5
申请日：2017-07-04
发明人： MORI, Tatsuya , FURUKAWA, Akira , KEZOBO, Isao
IPC分类号： H02M7/537 , H02M7/00 , H02M1/00 , G01R19/00 , H02P27/08

6. 发明公开

EP3981066A1 MOTOR BRAKING USING SELECTIVELY CONNECTABLE RESISTANCE 审中-公开
公开(公告)号：EP3981066A1
公开(公告)日：2022-04-13
申请号：EP20822325.5
申请日：2020-06-05
申请人： Milwaukee Electric Tool Corporation
发明人： OBERMANN, Timothy, R , HUBER, Alex
IPC分类号： H02P3/18 , B25F5/00 , H02P27/08 , H02M7/537 , H02K7/14

8. 发明公开

EP3855613A1 ON-BOARD CAPACITOR HEALTH MONITORING SYSTEMS AND METHODS 审中-实审
公开(公告)号：EP3855613A1
公开(公告)日：2021-07-28
申请号：EP21153045.6
申请日：2021-01-22
申请人： Goodrich Corporation
发明人： KHAN, Shoyeb
IPC分类号： H02M5/458 , H02M7/06 , H02M7/537
摘要： A method for monitoring DC link capacitor health includes receiving a plurality of DC link capacitor state variables and determining whether each of the DC link capacitor state variables are less than a threshold value. In response to the DC link capacitor state variable being less than the threshold value, a deviation of each of the DC link capacitor state variables from the threshold value is calculated. The method further includes determining whether each of the deviations of the DC link capacitor state variables occurred within a threshold time. The method further includes calculating a probability of failure of a DC link capacitor. The probability of failure is used to estimate a remaining lifespan of the DC link capacitor.

10. 发明授权

EP3459169B1 RESONANT CONVERTERS INCLUDING FLYING CAPACITORS 有权转让
公开(公告)号：EP3459169B1
公开(公告)日：2021-07-21
申请号：EP17800221.8
申请日：2017-05-19
发明人： LIANG, Jiaqi , SURYANARAYANA, Harish , KITTILA, Jukka-Pekka
IPC分类号： H02M3/335 , H02M7/537 , H02M7/483 , H02M1/00 , H02M7/48

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