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公开(公告)号：US10044291B2
公开(公告)日：2018-08-07
申请号：US14938192
申请日：2015-11-11
Applicant: Sungrow Power Supply Co., Ltd.
Inventor： Jie Ding , Haiyan Zou , Lei Tao , Taotao Xu , Cheng Zhang
Abstract: A method and device for modulating a five-level inverter, and a photovoltaic system are provided. The method includes: acquiring a voltage command value Vcmd of a phase bridge; controlling a first and a fourth switching devices to be switched on alternately when Vcmd≥V1Pos+Vthrs1; controlling the first and a third switching devices to be switched on alternately when V1Pos−Vthrs2≤Vcmd
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公开(公告)号：US12081136B2
公开(公告)日：2024-09-03
申请号：US17584080
申请日：2022-01-25
Applicant: Sungrow Power Supply Co., Ltd.
IPC: H02M7/00 , H01L23/50 , H02M7/487 , H02M7/5387 , H05K7/20
CPC classification number: H02M7/003 , H01L23/50 , H02M7/487 , H02M7/5387 , H05K7/20927
Abstract: An inverter module and an inverter are provided. The inverter module includes at least two capacitors and at least one power unit group. The at least one power unit group each comprises one or more power units. The capacitors are connected in series and parallel to form a capacitor head terminal, a capacitor end terminal and a capacitor midpoint, where capacitance between the capacitor midpoint and the capacitor head terminal is the same as capacitance between the capacitor midpoint and the capacitor end terminal. Positive poles of DC sides of the power units are equidistantly connected with the capacitor head terminal, negative poles of the DC sides of the power units are equidistantly connected with the capacitor end terminal, and midpoints of the DC sides of the power units are equidistantly connected with the capacitor midpoint.
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Patent Agency Ranking
公开(公告)号：US20220271682A1
公开(公告)日：2022-08-25
申请号：US17584080
申请日：2022-01-25
Applicant: Sungrow Power Supply Co., Ltd.
IPC: H02M7/00 , H02M7/5387 , H05K7/20
Abstract: An inverter module and an inverter are provided. The inverter module includes at least two capacitors and at least one power unit group. The at least one power unit group each comprises one or more power units. The capacitors are connected in series and parallel to form a capacitor head terminal, a capacitor end terminal and a capacitor midpoint, where capacitance between the capacitor midpoint and the capacitor head terminal is the same as capacitance between the capacitor midpoint and the capacitor end terminal. Positive poles of DC sides of the power units are equidistantly connected with the capacitor head terminal, negative poles of the DC sides of the power units are equidistantly connected with the capacitor end terminal, and midpoints of the DC sides of the power units are equidistantly connected with the capacitor midpoint.
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公开(公告)号：US20250047211A1
公开(公告)日：2025-02-06
申请号：US18714073
申请日：2023-01-31
Applicant: Sungrow Power Supply Co., Ltd.
Inventor： Fei Wu , Xiaohu Wang , Qiyao Zhu , Jie Ding
Abstract: An inverter and an inverter system. The inverter includes an inverter module and a power distribution unit; the inverter module has a first direction and a second direction which are perpendicular to each other; the inverter module is provided with a direct current input end and an alternating current output end, and the direct current input end and the alternating current output end are distributed on two sides of the inverter module in the first direction; the power distribution unit includes a direct current module and an alternating current module, and the direct current module and the alternating current module are provided at a same end of the inverter module in the second direction; the direct current input end faces the power distribution unit; the alternating current output end faces the power distribution unit; the direct current module is electrically connected to the direct current input end; the alternating current module is electrically connected to the alternating current output end. According to the technical solution of the present utility model, the cable consumption of the inverter can be reduced, and the operation safety and maintainability of the inverter are improved.
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公开(公告)号：US12003105B2
公开(公告)日：2024-06-04
申请号：US17642113
申请日：2020-06-11
Applicant: SUNGROW POWER SUPPLY CO., LTD.
Inventor： Guohua Xiang , Lin Cheng , Jie Ding , Nianan Pan
CPC classification number: H02J3/10 , H02J3/381 , H02J13/00002
Abstract: The present application discloses a multi-channel grid-connected power generation system and a control method therefor, which lowers the system cost while reducing no-load losses of all step-up transformers. Multi-channel energy conversion devices in the system are each connected in parallel, by means of a step-up transformer, to the same collector line, one end of the collector line is connected to the grid by means of a switch device, and the on-off switching of the switch device is controlled by a control unit. The control unit sends a switch-off command to the switch device when same has determined that all of the energy conversion devices have entered a non-operating state. In the off state of the switch device, at least one energy conversion device, when meeting a start-up condition, starts to operate as a voltage source, and establishes an alternating-current voltage, so that the phase difference and amplitude difference of voltages at two ends of the switch device are both stable within an allowable error range. Then, the control unit sends a switch-on command to the switch device, and the other energy conversion devices start to operate as a current source to transfer energy to the grid.
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公开(公告)号：US20230360999A1
公开(公告)日：2023-11-09
申请号：US18114443
申请日：2023-02-27
Applicant: Sungrow Power Supply Co., Ltd.
Inventor： Hao Zheng , Xiaohu Wang , Qiyao Zhu , Wentao Shu , Ye Yang , Nianan Pan , Jie Ding
IPC: H01L23/427
CPC classification number: H01L23/427 , H01L25/072
Abstract: A phase-change heat dissipater and a power module are provided according to the present application. The phase-change heat dissipater includes least two evaporators, at least one condenser and at least two sets of heat transfer pipelines, the at least two evaporators and at least one condenser form at least two circulating heat dissipation circuits through the at least two sets of heat transfer pipelines, and a phase-change medium is filled in the at least two circulating heat dissipation circuits; and the at least two evaporators are arranged sequentially along a vertical direction. The technical solution of the present application can improve the temperature difference of the at least two evaporators and maintain the temperature uniformity of the at least two evaporators.
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公开(公告)号：US09712083B2
公开(公告)日：2017-07-18
申请号：US14938228
申请日：2015-11-11
Applicant: Sungrow Power Supply Co., Ltd.
Inventor： Jie Ding , Haiyan Zou , Lei Tao , Taotao Xu , Cheng Zhang
Abstract: A method and device for switching an operation mode of a five-level inverter are provided. The method includes: determining a first three-level operation mode as a three-level operation mode to be switched to from a five-level operation mode in a case that a PV input voltage is higher than a bridge line-line voltage command value; switching, after the operation mode is switched to the first three-level operation mode, the operation mode from the first three-level operation mode to a second three-level operation mode, in a case that a junction temperature of a switching device operating in the first three-level operation mode exceeds a first preset value; and switching the operation mode from the second three-level operation mode to the first three-level operation mode in a case that the junction temperature of a switching device operating in the second three-level operation mode exceeds a second preset value.
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