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公开(公告)号：US20230344266A1
公开(公告)日：2023-10-26
申请号：US18344725
申请日：2023-06-29
申请人： Nextracker LLC
CPC分类号： H02J7/35 , H02M3/1582 , H02S20/32 , H02P27/08
摘要： A power converter converts a medium-voltage output from a solar module to an appropriate voltage to power a solar tracker system. The power converter includes a voltage divider having at least two legs, a first semiconductor switch subassembly coupled in parallel with a first leg of the voltage divider, and a second semiconductor switch subassembly coupled in parallel with a second leg of the voltage divider. The power converter may be a unidirectional or a bidirectional power converter. In implementations, the signals for driving the semiconductor switches of the first and second semiconductor switch subassemblies may be shifted out of phase from each other. In implementations, if the bus voltages to the semiconductor switches are not balanced, the pulse width of the driving signal of the semiconductor switch supplied with the higher bus voltage is decreased for at least one cycle.
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公开(公告)号：US20230318524A1
公开(公告)日：2023-10-05
申请号：US18126841
申请日：2023-03-27
申请人： Nextracker LLC
发明人： Alexander W. AU
CPC分类号： H02S20/32 , H02S20/00 , F16L3/02 , F16M13/022 , F24S25/70 , F24S30/425 , F24S25/10 , Y02E10/50 , Y02E10/47 , Y10T29/49826 , Y10T29/49947 , F24S2030/17
摘要： In an example, the solar tracker has a clamp assembly configured to pivot a torque tube. In an example, the assembly has a support structure configured as a frame having configured by a first and second anchoring region. In an example, the support structure is configured from a thickness of metal material. In an example, the support structure is configured in an upright manner, and has a major plane region. In an example, the assembly has a pivot device configured on the support structure, a torque tube suspending on the pivot device and aligned within an opening of the support, and configured to be normal to the plane region. In an example, the torque tube is configured on the pivot device to move about an arc in a first direction or in a second direction such that the first direction is in a direction opposite to the second direction.
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公开(公告)号：US11757297B2
公开(公告)日：2023-09-12
申请号：US18075317
申请日：2022-12-05
申请人： Nextracker LLC
发明人： Chen Li , Yang Liu , Jonathan Kenzo Kamei
IPC分类号： H01M10/44 , H01M10/46 , H02J7/04 , H02J7/35 , H02J7/00 , H01M8/04858 , H01M4/36 , H01M8/18 , H02S20/32
CPC分类号： H02J7/04 , H01M4/368 , H01M8/04902 , H01M8/188 , H02J7/0068 , H02J7/35 , H02S20/32
摘要： Systems and methods for managing flow batteries utilize a battery management controller (BMC) coupled between a flow battery and a DC/DC converter, which is coupled to an electrical grid or a photovoltaic device via an inverter. The inverter converts an AC voltage to a first DC voltage and the DC/DC converter steps down the first DC voltage to a second DC voltage. The BMC includes a first power route, a second power route, and a current source converter coupled to the second power route. The BMC initializes the flow battery with a third DC voltage using the current source converter until a sensing circuit senses that the voltage of the flow battery has reached a predetermined voltage. The sensing circuit may include a capacitor, which has a small capacitance and is coupled across each cell of the flow battery, coupled in series between two resistors having very large resistances.
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公开(公告)号：US20230170841A1
公开(公告)日：2023-06-01
申请号：US18072335
申请日：2022-11-30
申请人： Nextracker LLC
发明人： Chen Li , Yang Liu , Alexander W. AU
摘要： A solar tracking system includes a solar array, a support structure configured to support the solar array, a driveshaft coupled to the support structure, a base configured to rotatably support the driveshaft, and an articulation system coupled to the driveshaft and configured to articulate the driveshaft relative to the base. The articulation system includes a gearbox coupled to the driveshaft. The solar tracking system also includes a motor mechanically operably coupled to the gearbox to cause the driveshaft to rotate, and a controller that determines a fault caused by the winding up of the driveshaft, and, in response to determining the fault, shorting the windings of the motor and/or providing power, which is generated by the motor when the unwinding driveshaft drives the rotation of the motor, to a load, such as an energy storage device, a resistive load, and/or a heating element.
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公开(公告)号：US20230170729A1
公开(公告)日：2023-06-01
申请号：US18075317
申请日：2022-12-05
申请人： Nextracker LLC
发明人： Chen Li , Yang Liu , Jonathan Kenzo Kamei
CPC分类号： H02J7/04 , H02J7/35 , H02J7/0068 , H01M8/04902 , H01M4/368 , H01M8/188 , H02S20/32
摘要： Systems and methods for managing flow batteries utilize a battery management controller (BMC) coupled between a flow battery and a DC/DC converter, which is coupled to an electrical grid or a photovoltaic device via an inverter. The inverter converts an AC voltage to a first DC voltage and the DC/DC converter steps down the first DC voltage to a second DC voltage. The BMC includes a first power route, a second power route, and a current source converter coupled to the second power route. The BMC initializes the flow battery with a third DC voltage using the current source converter until a sensing circuit senses that the voltage of the flow battery has reached a predetermined voltage. The sensing circuit may include a capacitor, which has a small capacitance and is coupled across each cell of the flow battery, coupled in series between two resistors having very large resistances.
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公开(公告)号：US20230163719A1
公开(公告)日：2023-05-25
申请号：US18100909
申请日：2023-01-24
申请人： Nextracker LLC
发明人： Alexander W. AU
IPC分类号： H02S20/32 , F16F1/36 , F16M11/04 , F24S40/80 , F24S25/65 , F24S30/425 , F16F15/08 , H02S30/10
CPC分类号： H02S20/32 , F16F1/36 , F16M11/04 , F24S40/85 , F24S25/65 , F24S30/425 , F16F15/08 , H02S30/10 , F24S2025/6003
摘要： In an example, the system has a mechanical isolator comprising an elastic material configured to separate the panel rail from the torque tube cause destructive interference with a natural resonant frequency of the system without the mechanical isolator to reduce a mechanical vibration of the system.
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公开(公告)号：US20230072681A1
公开(公告)日：2023-03-09
申请号：US17941642
申请日：2022-09-09
申请人： Nextracker LLC
发明人： Jitendra Morankar , Abhimanyu Sable , Phani Kumar
IPC分类号： F24S25/634 , F24S40/20
摘要： A docking station for use with a solar tracking system includes a frame configured to selectively support solar cleaning equipment thereon and a mounting bracket operably coupled to a portion of the frame. The mounting bracket maintains a gap between adjacent edges of the frame and an adjacent solar module, and the frame includes a width that approximates a width of the solar module.
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公开(公告)号：US20230070097A1
公开(公告)日：2023-03-09
申请号：US17987601
申请日：2022-11-15
申请人： Nextracker LLC
摘要： A solar module mounting bracket system including a plurality of solar modules including mounting slots formed in a sidewall of the solar module, a torque tube configured to support the solar modules such that they can be rotated, a plurality of mounting brackets configured for integration with the torque tube and to which the plurality of solar modules are mounted, at least one first retainer assembly connected to one of the plurality of mounting brackets, the first retainer assembly including a through bolt, a spring, a mounting tab, and nut. When a solar module is placed on the mounting bracket and supported by the torque tube the mounting tab retainer assembly is received in the mounting slot of the solar module.
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公开(公告)号：US20230051274A1
公开(公告)日：2023-02-16
申请号：US17978709
申请日：2022-11-01
申请人： Nextracker LLC
发明人： Daniel Shugar , Eric Cole
摘要： A bifacial solar module with enhanced power output including first and second transparent support layers, a plurality of electrically interconnected bifacial solar cells arranged between the transparent support layers with gaps between one or more of the interconnected solar cells and edges of the first and second transparent support layers, the bifacial solar cells having a first side directly exposed to solar radiation and a second side opposite the first. The bifacial solar module further includes one or more micro-structured reflective tapes positioned coincidentally with the gaps and attached to a surface of the second support layer such that light passing through the second support layer is reflected back into the second support layer at angles such that light reflecting from the tape is absorbed by either the first or second side of the bifacial solar cells.
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公开(公告)号：US20230009592A1
公开(公告)日：2023-01-12
申请号：US17856472
申请日：2022-07-01
申请人： Nextracker LLC
发明人： Abhimanyu Sable , Phani Kumar , Jitendra Morankar
IPC分类号： F24S25/634
摘要： A clamp assembly for use with a solar module includes a first clamping arm operably coupled to a first portion of a solar module, a second clamping arm operably coupled to a second portion of the solar module and operably coupled to the first clamping arm and disposed in juxtaposed relation thereto, and a fastener operably coupled to a respective portion of each of the first and second clamping arms. The fastener is configured to draw each of the first and second clamping arms towards one another from a first, open position, where the solar module is free to move relative to first and second clamping arms to a second, closed position, where the solar module is inhibited from moving relative to the first and second clamping arms.
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