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公开(公告)号：US12231079B2
公开(公告)日：2025-02-18
申请号：US18661302
申请日：2024-05-10
Applicant: Nextracker LLC
Abstract: A solar tracker system including a tracker apparatus including a plurality of solar modules, each of the solar modules being spatially configured to face in a normal manner in an on sun position in an incident direction of electromagnetic radiation derived from the sun, wherein the solar modules include a plurality of PV strings, and a tracker controller. The tracker controller includes a processor, a memory, a power supply configured to provide power to the tracker controller, a plurality of power inputs configured to receive a plurality of currents from the plurality of PV strings, a current sensing unit configured to individually monitor the plurality of currents, a DC-DC power converter configured to receive the plurality of power inputs powered from the plurality of PV strings to supply power to the power supply, and a motor controller, wherein the tracker controller is configured to track the sun position.
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公开(公告)号：US20240396497A1
公开(公告)日：2024-11-28
申请号：US18669686
申请日：2024-05-21
Applicant: Nextracker LLC
Inventor： Yang Liu , David E. Kresse , Chennan Li
Abstract: A method and system of analyzing health of a solar tracker, including confirming solar tracker is in a starting position, driving solar tracker through a range of angles, collecting data regarding performance of solar tracker, analyzing the collected data, and presenting one or more aspects of the collected data on a user interface indicating the health of the solar tracker.
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公开(公告)号：US20240297613A1
公开(公告)日：2024-09-05
申请号：US18661302
申请日：2024-05-10
Applicant: Nextracker LLC
Abstract: A solar tracker system including a tracker apparatus including a plurality of solar modules, each of the solar modules being spatially configured to face in a normal manner in an on sun position in an incident direction of electromagnetic radiation derived from the sun, wherein the solar modules include a plurality of PV strings, and a tracker controller. The tracker controller includes a processor, a memory, a power supply configured to provide power to the tracker controller, a plurality of power inputs configured to receive a plurality of currents from the plurality of PV strings, a current sensing unit configured to individually monitor the plurality of currents, a DC-DC power converter configured to receive the plurality of power inputs powered from the plurality of PV strings to supply power to the power supply, and a motor controller, wherein the tracker controller is configured to track the sun position.
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公开(公告)号：US20240014751A1
公开(公告)日：2024-01-11
申请号：US18349577
申请日：2023-07-10
Applicant: NEXTRACKER LLC
Inventor： Matthias Preindl , Yang Liu , Alexander W. AU
IPC: H02M7/5395 , H02J3/38 , H02M1/12
CPC classification number: H02M7/5395 , H02J3/381 , H02M1/123 , H02J2300/26
Abstract: A parallel inverter system for solar tracker systems minimizes circulating currents, mitigates ripple, and increases efficiency. The parallel inverter system includes inverters coupled together in parallel, a common DC bus coupled between a DC load and inputs of the inverters, a common AC bus coupled between outputs of the inverters and an electrical power grid, and a common-mode filter coupled to the output of each of the inverters. The parallel inverter system also includes controllers coupled to the inverters, respectively, the controllers configured to generate interleaved pulse width modulation (PWM) signals, respectively. The PWM signals are synchronized with each other. The PWM signals may be synchronized with each other via the EtherCAT protocol.
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公开(公告)号：US20230035847A1
公开(公告)日：2023-02-02
申请号：US17877678
申请日：2022-07-29
Applicant: Nextracker LLC
Inventor： Venkata Rahul Abbaraju , Yang Liu , Eric Martinez
Abstract: A method of controlling a solar array including receiving current and voltage data from a plurality of solar modules of the solar array, calculating a diffuse fraction irradiance for the plurality of solar modules, mapping the diffuse fraction irradiance for the plurality of solar modules, generating a digital image of light conditions in the solar array based on the mapped diffuse fraction irradiance, defining zones within the array based on the light conditions in the digital image, determining a zone-specific solar tracker angle for each zone based on mapped diffuse fraction irradiance, transmitting the zone-specific solar tracker angle to a computing device associated with each solar tracker in the solar array, and driving the solar trackers of each zone such that the solar trackers that make up each zone are oriented to substantially the same angle.
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Patent Agency Ranking
公开(公告)号：US20250067478A1
公开(公告)日：2025-02-27
申请号：US18946132
申请日：2024-11-13
Applicant: Nextracker LLC
Inventor： Yu Dong Ma , Yang Liu , Francesco Borrelli , Allan Daly , Ricardo Delgado-Nanez , Alexander W. AU
IPC: F24S30/422 , F24S20/00 , F24S25/10 , F24S30/00 , F24S30/425 , H02S20/10
Abstract: A solar power plant includes a solar tracker supporting solar modules with the solar tracker supported on a first end by a first pier and on a second end by a second pier. A drive device is coupled to the solar tracker and configured to rotate the solar tracker about an axis. An energy storage unit is supported by the solar tracker between the first pier and the second pier with the energy storage unit configured to power the drive device. The solar tracker also includes a controller in communication with a memory with the memory storing instructions thereon that when executed by the controller, cause the controller to: receive forecast data for the solar power plant; determine, based on the forecast data, a diffuse angle adjustment; and output a signal to the drive device to rotate the solar tracker to a desired angle based on the diffuse angle adjustment.
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公开(公告)号：US12068634B2
公开(公告)日：2024-08-20
申请号：US17868646
申请日：2022-07-19
Applicant: Nextracker LLC
IPC: H02J7/35 , H01L31/053 , H02S10/20
CPC classification number: H02J7/35 , H01L31/053 , H02S10/20
Abstract: A multi-power source system including a first power source, a second power source in a parallel with the first power source, and a diode preventing power from the second power source to drive the first power source, but permitting the first power source to charge the second power source. The system also includes a controller operably coupled to both the first and second power sources, and a plurality of field effect transistor (FETs) arranged in series with one or more of the first power source, the second power source, and the load, wherein controller can switch the plurality of FETs to enable the first power source to drive the load or the second power source to drive the load.
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公开(公告)号：US11942893B2
公开(公告)日：2024-03-26
申请号：US16805798
申请日：2020-03-01
Applicant: Nextracker LLC
Inventor： Fei Gu , Yang Liu , Venkata Rahul Abbaraju , Eric Martinez
Abstract: Split-cell and multi-panel photovoltaic backtracking control systems and methods allow for increased total power generation during low sun elevation conditions by shading a percentage of panel modules, thereby allowing for a lower angle of incidence on unshaded modules. The control systems and methods involve determining a sun elevation angle, a traditional backtracking angle, a split-cell or multi-panel backtracking angle, a single-cell or single-panel relative light transmission (RLT) based on the single-cell or single-panel backtracking angle, and a split-cell or multi-panel RLT based on the split-cell or multi-panel backtracking angle. If twice the single-cell or single-panel RLT is greater than the split-cell or multi-panel RLT, the split-cell or multi-panel backtracking angle is used; otherwise, the single-cell or single-panel backtracking angle is used. The control systems and methods may further involve determining a diffuse fraction index (DFI) and, if the DFI is greater than a DFI limit, using a DFI tracking angle.
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公开(公告)号：US11764723B2
公开(公告)日：2023-09-19
申请号：US17320999
申请日：2021-05-14
Applicant: NEXTracker LLC
Abstract: A solar tracker system including a tracker apparatus including a plurality of solar modules, each of the solar modules being spatially configured to face in a normal manner in an on sun position in an incident direction of electromagnetic radiation derived from the sun, wherein the solar modules include a plurality of PV strings, and a tracker controller. The tracker controller includes a processor, a memory, a power supply configured to provide power to the tracker controller, a plurality of power inputs configured to receive a plurality of currents from the plurality of PV strings, a current sensing unit configured to individually monitor the plurality of currents, a DC-DC power converter configured to receive the plurality of power inputs powered from the plurality of PV strings to supply power to the power supply, and a motor controller, wherein the tracker controller is configured to track the sun position.
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公开(公告)号：US20250158563A1
公开(公告)日：2025-05-15
申请号：US19021614
申请日：2025-01-15
Applicant: Nextracker LLC
Abstract: A solar tracker system including a tracker apparatus including a plurality of solar modules, each of the solar modules being spatially configured to face in a normal manner in an on sun position in an incident direction of electromagnetic radiation derived from the sun, wherein the solar modules include a plurality of PV strings, and a tracker controller. The tracker controller includes a processor, a memory, a power supply configured to provide power to the tracker controller, a plurality of power inputs configured to receive a plurality of currents from the plurality of PV strings, a current sensing unit configured to individually monitor the plurality of currents, a DC-DC power converter configured to receive the plurality of power inputs powered from the plurality of PV strings to supply power to the power supply, and a motor controller, wherein the tracker controller is configured to track the sun position.
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