Abstract: A multi-drive solar-tracking photovoltaic (PV) system having several PV modules mounted on a torque tube is described. In an example, several motor drives input torque to the torque tube, and the motor drives are controlled by a single controller. The torque tube may include several sections joined by a torque tube coupler. For example, the torque tube coupler may having a medial section and end sections to join to the torque tube sections. The medial section and the adjoined torque tube sections may have a same outer diameter.

Abstract: A solar-tracking photovoltaic (PV) system having a motor drive vertically below a PV module, is described. In an example, the motor drive rotates a torque tube holding the PV module. The motor drive may include a gearbox having a worm drive, and a gearmotor having an offset gear. The offset gear may be coupled to a planetary gear train along an axis of a worm of the worm drive, and the offset gear may be coupled to a motor along a shaft axis offset vertically below the worm axis. Accordingly, the motor may be offset vertically below the worm drive, i.e., farther from the PV laminate than the worm drive, and a rotational clearance for the PV laminate may be increased.

Abstract: A wire management device is disclosed. The device comprises a clip comprising an upper planar member and a lower planar member, each planar member having an inner and outer surface, wherein the inner surface of the upper planar member includes a post extending toward the inner surface of the lower planar member, a stem extending from the outer surface of the lower planar member, the stem including two outwardly-extending flanges, each of the first and second outwardly-extending flanges including an edge portion extending toward the outer surface of the lower planar member, and a transverse passage extending along the outer surface of the lower planar member, the transverse passage extending across the stem, wherein the stem has a recessed portion along the transverse passage.

Abstract: A wire management device is disclosed. The device comprises a clip comprising an upper planar member and a lower planar member, each planar member having an inner and outer surface, wherein the inner surface of the upper planar member includes a post extending toward the inner surface of the lower planar member, a stem extending from the outer surface of the lower planar member, the stem including two outwardly-extending flanges, each of the first and second outwardly-extending flanges including an edge portion extending toward the outer surface of the lower planar member, and a transverse passage extending along the outer surface of the lower planar member, the transverse passage extending across the stem, wherein the stem has a recessed portion along the transverse passage.

Abstract: A cable tray and support system facilitates cable management in a solar energy collector system at reduced cost relative to previous cable tray and support systems. The cable tray and support system comprises cables trays, mounting brackets, and vertically-oriented piles. The mounting brackets are coupled to the cables trays and vertically-oriented piles. The mounting brackets include one or more stress relief features (e.g., notches) to allow the mounting bracket to provide cantilevered deflection in response to thermal expansion or contraction-of the cable tray. The cable tray and support system also provides a ground path from a cable tray, to the mounting bracket, to the pile, and then to the ground to dissipate transient voltages in the solar energy collection system.

Abstract: Cable management devices for use in photovoltaic (PV) module systems are described, including a cable support clip, a cable support stand, and a cable support tray. The cable management devices may be easily mounted on support surfaces, e.g., a roof or a frame rail, to lock electrical wiring in place and prevent contact with external structures. Furthermore, the cable management devices may be fabricated from low-cost and weather-resistant materials, e.g., spring wire or recycled automobile tires.

Abstract: Mounting components of photovoltaic (PV) modules and PV module assemblies are described, including PV module couplings and PV module mounting chassis. In an example, a PV module includes a PV module coupling having a toe portion extending from a PV module frame, and a PV module mounting chassis includes a toe slot to receive the toe. The toe and toe slot construction allows for the PV module frame to be assembled to the PV module mounting chassis without using tools, and thus, permits a PV module assembly to be quickly constructed during installation of a PV module system. Furthermore, the toe and toe slot construction accommodates thermal expansion and other environmental loads seen after installation, while providing a grounding connection for the PV module assembly.

Abstract: A sun tracking solar energy collection system can include torque tubes formed with a plurality of rotatable shafts connected to each other in an end to end fashion. The ends of the shafts can be connected with coupling devices in the form of an integrated coupling flange and mounting devices. The coupling flange can include a mounting surface that extends generally parallel to the axis of rotation of the shaft. Additionally, the coupling flange can include a coupling face that extends generally perpendicular to the axis of rotation, so as to provide a mating face for an adjacent coupling flange to transmit torque from one shaft to another. The mounting flanges can be used to support devices such as solar energy collection devices including photovoltaic modules or other devices.

Abstract: A sun-tracking solar drive of a solar energy system can include mounting hardware supporting the solar drive with support components of the same type of that used for supporting other components of system. The support components can be in the form of pile driven members, which optionally can be connected together for sharing the loads associated with the solar drive. The solar drive can be mounted to the support components with an adjustable mount member, configured to allow an orientation of the solar drive to be adjusted.

Abstract: A sun tracking solar energy collection system can include torque tubes that can be configured to allow the cylindrical body of one torque tube to nest with projections extending from an adjacent torque tube. The torque tubes can be formed with a plurality of rotatable shafts connected to each other in an end to end fashion. The torque tubes may be connected with coupling flanges, shaped with a plurality of radially extending lobes. The coupling flanges can include a plurality of concave portions disposed between adjacent lobes. The rotatable shafts can be round and the concave portions can be curved with a radius of curvature that is about the same as a radius of curvature of outer surface of the rotatable shafts. The torque tubes can also have saddle mounts which can include a concave portion configured to nest with an adjacent torque tube.

Abstract: A solar energy collection system can include improved mounting hardware for reducing hardware costs and labor required for assembly. For example, mounting hardware can include surfaces for supporting part or all of the weight of a solar module as it is brought into contact with mounting hardware and then moved into a final engaged position. In some systems, a torque tube can include saddle mount assemblies that allow a solar module to be partially engaged and a registered with the saddle mount while being pivoted into a final locked engagement. Some systems can include arrangements sufficient to support the full weight of a solar module in a disengaged position, and as it is moved into a final engaged position. Some systems can include a configuration of apertures and interference or snap-fit features for providing tool-less connections, thereby simplifying the assembly process.

Abstract: A solar energy collection system can include improved mounting hardware for reducing hardware costs and labor required for assembly. For example, mounting hardware can include surfaces for supporting part or all of the weight of a solar module as it is brought into contact with mounting hardware and then moved into a final engaged position. In some systems, a torque tube can include saddle mount assemblies that allow a solar module to be partially engaged and a registered with the saddle mount while being pivoted into a final locked engagement. Some systems can include arrangements sufficient to support the full weight of a solar module in a disengaged position, and as it is moved into a final engaged position. Some systems can include a configuration of apertures and interference or snap-fit features for providing tool-less connections, thereby simplifying the assembly process.

Abstract: A solar energy collection system can include improved mounting hardware for reducing hardware costs and labor required for assembly. For example, mounting hardware can include surfaces for supporting part or all of the weight of a solar module as it is brought into contact with mounting hardware and then moved into a final engaged position. In some systems, a torque tube can include saddle mount assemblies that allow a solar module to be partially engaged and a registered with the saddle mount while being pivoted into a final locked engagement. Some systems can include arrangements sufficient to support the full weight of a solar module in a disengaged position, and as it is moved into a final engaged position. Some systems can include a configuration of apertures and interference or snap-fit features for providing tool-less connections, thereby simplifying the assembly process.

Abstract: A sun tracking solar energy collection system can include torque tubes that can be configured to allow the cylindrical body of one torque tube to nest with projections extending from an adjacent torque tube. The torque tubes can be formed with a plurality of rotatable shafts connected to each other in an end to end fashion. The torque tubes may be connected with coupling flanges, shaped with a plurality of radially extending lobes. The coupling flanges can include a plurality of concave portions disposed between adjacent lobes. The rotatable shafts can be round and the concave portions can be curved with a radius of curvature that is about the same as a radius of curvature of outer surface of the rotatable shafts. The torque tubes can also have saddle mounts which can include a concave portion configured to nest with an adjacent torque tube.

Abstract: A sun tracking solar power generation system can include drive members for driving a plurality of parallel sun tracking assemblies. The drive components of the drive system can be arranged in a recess or trench created in the ground. This arrangement can reduce the material and labor costs for constructing a solar power system.

Abstract: A sun tracking solar energy collection system can include torque tubes formed with a plurality of rotatable shafts connected to each other in an end to end fashion. The ends of the shafts can be connected with coupling devices in the form of an integrated coupling flange and mounting devices. The coupling flange can include a mounting surface that extends generally parallel to the axis of rotation of the shaft. Additionally, the coupling flange can include a coupling face that extends generally perpendicular to the axis of rotation, so as to provide a mating face for an adjacent coupling flange to transmit torque from one shaft to another. The mounting flanges can be used to support devices such as solar energy collection devices including photovoltaic modules or other devices.

Abstract: A photovoltaic assembly for converting solar radiation to electrical energy is described. The photovoltaic assembly includes a first photovoltaic module, a second photovoltaic module and a coupling platform. The first and second photovoltaic module each have a first side for securing to the coupling platform. The coupling platform has a retractable locking mechanism and a retaining device. The retaining device is positioned such that the first side of the second PV module inhibits the retractable locking mechanism from releasing the first side of the first PV module. The coupling platform also includes a support member for mounting to a tracking drive system or a roof top.

Abstract: A wire management device is disclosed. The device comprises a clip comprising an upper planar member and a lower planar member, each planar member having an inner and outer surface, wherein the inner surface of the upper planar member includes a post extending toward the inner surface of the lower planar member, a stem extending from the outer surface of the lower planar member, the stem including two outwardly-extending flanges, each of the first and second outwardly-extending flanges including an edge portion extending toward the outer surface of the lower planar member, and a transverse passage extending along the outer surface of the lower planar member, the transverse passage extending across the stem, wherein the stem has a recessed portion along the transverse passage.