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公开(公告)号：US11894687B2
公开(公告)日：2024-02-06
申请号：US17404181
申请日：2021-08-17
Applicant: Sungrow Power Supply Co., Ltd.
Inventor： Yanfei Yu , Anying Jiang , Xinyu Wang , Xiaoxun Li
CPC classification number: H02J3/40 , H02J3/381 , H02S40/30 , H02S50/10 , H02J2300/24
Abstract: A photovoltaic system, a method for locating devices in a photovoltaic string, a MLPE apparatus, and a method for ranking MLPE apparatuses. Each MLPE apparatus sends, actively according to a predetermine rule, an initial message to the other MLPE apparatuses. The initial message includes a serial number corresponding to said MLPE apparatus and an accumulated operation duration of said MLPE apparatus. The MLPE apparatuses determine the rank of the accumulated operation duration of each MLPE apparatus according to the initial messages sent from all MLPE apparatuses. After each MLPE apparatus communicates with a communication host, the MLPE apparatuses reports the rank of the accumulated operation duration of each MLPE apparatus to the communication host. Thereby, the communication host may determine a physical location of each device in the photovoltaic string according to the ranks of the accumulated operation durations and a sequence of installing positions of the devices in the photovoltaic string.
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公开(公告)号：US11626837B2
公开(公告)日：2023-04-11
申请号：US17404007
申请日：2021-08-17
Applicant: Sungrow Power Supply Co., Ltd.
Inventor： Yanfei Yu , Xiaoxun Li , Anying Jiang , Xinyu Wang
Abstract: A photovoltaic system and a method for locating devices in a photovoltaic string. A communication host in the photovoltaic system acquires accumulated operation durations of MLPE apparatuses of the photovoltaic string, ranks the accumulated operation durations to obtain a ranking result, and determines a physical location of each device in the photovoltaic string according to the ranking result and a sequence of installing positions of the devices, where the devices are installed at the installing positions based on the sequence. It is not necessary to paste label codes on the MLPE apparatuses, or record serial numbers of the MLPE apparatuses by installation personnel. Operation processes are simplified, operation time is saved, and labor costs are reduced.
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Patent Agency Ranking
公开(公告)号：US12057809B2
公开(公告)日：2024-08-06
申请号：US17109257
申请日：2020-12-02
Applicant: SUNGROW POWER SUPPLY CO., LTD.
Inventor： Yanfei Yu , Anying Jiang , Yu Yang , Xiaoxun Li
IPC: H02S50/00 , H02S40/32 , H02J1/00 , H02J1/10 , H02J3/38 , H02M1/32 , H02M3/42 , H02M7/36 , H02M7/62 , H02M7/95
CPC classification number: H02S50/00 , H02S40/32 , H02J1/00 , H02J1/10 , H02J3/381 , H02J2300/24 , H02M1/32 , H02M3/42 , H02M7/36 , H02M7/62 , H02M7/95
Abstract: Provided are a method for controlling operation of a module level power electronics (MLPE) device, a method for controlling MLPE devices and a photovoltaic system. In the method for controlling operation of a MLPE device, if it is determined that a current of a photovoltaic string where the MLPE device is located is less than a current threshold and coding information sent by a converter in the photovoltaic system is not received for a first preset time period, an output voltage or an output power of the MLPE device is controlled to be less than a corresponding threshold.
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公开(公告)号：US20220069586A1
公开(公告)日：2022-03-03
申请号：US17404181
申请日：2021-08-17
Applicant: Sungrow Power Supply Co., Ltd.
Inventor： Yanfei Yu , Anying Jiang , Xinyu Wang , Xiaoxun Li
Abstract: A photovoltaic system, a method for locating devices in a photovoltaic string, a MLPE apparatus, and a method for ranking MLPE apparatuses. Each MLPE apparatus sends, actively according to a predetermine rule, an initial message to the other MLPE apparatuses. The initial message includes a serial number corresponding to said MLPE apparatus and an accumulated operation duration of said MLPE apparatus. The MLPE apparatuses determine the rank of the accumulated operation duration of each MLPE apparatus according to the initial messages sent from all MLPE apparatuses. After each MLPE apparatus communicates with a communication host, the MLPE apparatuses reports the rank of the accumulated operation duration of each MLPE apparatus to the communication host. Thereby, the communication host may determine a physical location of each device in the photovoltaic string according to the ranks of the accumulated operation durations and a sequence of installing positions of the devices in the photovoltaic string.
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公开(公告)号：US11683008B2
公开(公告)日：2023-06-20
申请号：US17380418
申请日：2021-07-20
Applicant: Sungrow Power Supply Co., Ltd.
Inventor： Xinyu Wang , Anying Jiang , Shun Ding , Yanfei Yu , Xiaoxun Li
Abstract: A photovoltaic inverter, a photovoltaic system, and a method for controlling discharging are provided. The photovoltaic inverter includes a first DCDC converter, an inverter circuit, a first discharging circuit, and a controller. A port capacitor is connected between a positive input end and a negative input end of the first DCDC converter. The port capacitor includes an X capacitor and a first group of Y capacitors. The first discharging circuit is connected between a common terminal of the first group of Y capacitors and a direct current bus, where the common terminal of the first group of Y capacitors is grounded. The controller is configured to control, when receiving a rapid shutdown instruction, the first discharging circuit to operate. The first discharging circuit is configured to discharge electrical energy of the port capacitor.
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公开(公告)号：US20220069769A1
公开(公告)日：2022-03-03
申请号：US17404007
申请日：2021-08-17
Applicant: Sungrow Power Supply Co., Ltd.
Inventor： Yanfei Yu , Xiaoxun Li , Anying Jiang , Xinyu Wang
Abstract: A photovoltaic system and a method for locating devices in a photovoltaic string. A communication host in the photovoltaic system acquires accumulated operation durations of MLPE apparatuses of the photovoltaic string, ranks the accumulated operation durations to obtain a ranking result, and determines a physical location of each device in the photovoltaic string according to the ranking result and a sequence of installing positions of the devices, where the devices are installed at the installing positions based on the sequence. It is not necessary to paste label codes on the MLPE apparatuses, or record serial numbers of the MLPE apparatuses by installation personnel. Operation processes are simplified, operation time is saved, and labor costs are reduced.
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公开(公告)号：US20220029582A1
公开(公告)日：2022-01-27
申请号：US17380418
申请日：2021-07-20
Applicant: Sungrow Power Supply Co., Ltd.
Inventor： Xinyu Wang , Anying Jiang , Shun Ding , Yanfei Yu , Xiaoxun Li
Abstract: A photovoltaic inverter, a photovoltaic system, and a method for controlling discharging are provided. The photovoltaic inverter includes a first DCDC converter, an inverter circuit, a first discharging circuit, and a controller. A port capacitor is connected between a positive input end and a negative input end of the first DCDC converter. The port capacitor includes an X capacitor and a first group of Y capacitors. The first discharging circuit is connected between a common terminal of the first group of Y capacitors and a direct current bus, where the common terminal of the first group of Y capacitors is grounded. The controller is configured to control, when receiving a rapid shutdown instruction, the first discharging circuit to operate. The first discharging circuit is configured to discharge electrical energy of the port capacitor.
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