Abstract: A solar tracker assembly comprises a support column, a torsion beam connected to the support column, a mounting mechanism attached to the torsion beam, a drive system connected to the torsion beam, and a torsion limiter connected to an output of the drive system. When an external force causes a level of torsion on the drive system to exceed a pre-set limit the torsion limiter facilitates rotational movement of the solar tracker assembly in the direction of the torsion, thereby allowing the external force to rotate about a pivot axis extending through the torsion beam. Exemplary embodiments also include methods of aligning a plurality of rows of solar trackers.

Abstract: A solar tracking system with a plurality of tracking assemblies moved by a single motor. A method and system that prevents overloading the motor or tripping a circuit breaker due to an obstructed or impeded tracker includes sensing movement of the tracker assemblies and entering into obstruction clearing modes. Obstruction clearing mode 1 (OCM1) is a high frequency adjustable mode that prompts movement for an adjustable period of time. If movement commences, the system returns to a normal mode. If there is no movement, the system enters into an obstruction clearing mode 2 (OCM2) with is an adjustable lower frequency series of attempts. If there is no movement, no further attempts are made. Each of these steps are monitored and controlled remotely. There are two types of secure connections for drivelines, torque tubes or affixing driveline linkages for high torque conditions.

Abstract: A solar tracker assembly comprises a support column, a torsion beam connected to the support column, a mounting mechanism attached to the torsion beam, a drive system connected to the torsion beam, and a torsion limiter connected to an output of the drive system. When an external force causes a level of torsion on the drive system to exceed a pre-set limit the torsion limiter facilitates rotational movement of the solar tracker assembly in the direction of the torsion, thereby allowing the external force to rotate about a pivot axis extending through the torsion beam. Exemplary embodiments also include methods of aligning a plurality of rows of solar trackers.

Abstract: A solar tracking system with a plurality of tracking assemblies moved by a single motor. A method and system that prevents overloading the motor or tripping a circuit breaker due to an obstructed or impeded tracker includes sensing movement of the tracker assemblies and entering into obstruction clearing modes. Obstruction clearing mode 1 (OCM1) is a high frequency adjustable mode that prompts movement for an adjustable period of time. If movement commences, the system returns to a normal mode. If there is no movement, the system enters into an obstruction clearing mode 2 (OCM2) with is an adjustable lower frequency series of attempts. If there is no movement, no further attempts are made. Each of these steps are monitored and controlled remotely. There are two types of secure connections for drivelines, torque tubes or affixing driveline linkages for high torque conditions.

Abstract: A mounting bracket assembly is provided in which a mounting bracket includes a first attachable bracket piece and a second attachable bracket piece, a first fastener, a second fastener, and a third fastener. Each attachable bracket piece has a top member and a bottom member connected to the top member at an angle. The first clamp is attached to the top member of the first attachable bracket piece by the first fastener. The second clamp is attached to the top member of the second attachable bracket piece by a second fastener. The third fastener secures the bottom member of the first attachable bracket piece to the bottom member of the second attachable bracket piece. The mounting bracket defines a beam insertion aperture between the top members and the bottom members. The mounting bracket assembly may include a first integral grounding device located adjacent the top member of the first attachable bracket piece or adjacent the top member of the second attachable bracket piece.

Abstract: A mounting bracket assembly comprises a flexible body including at least one top member and a flexible angled bottom member connected to the top member. The flexible body defines a beam insertion aperture between the top member and the bottom member. The mounting bracket assembly further comprises at least one clamp attached to the top member. The mounting bracket assembly may further comprise a threaded rod running through the at least one top member and a clamping nut securing the threaded rod to the top member such that rotating the clamping nut compresses the top member and grounds an electricity generating device such as a photovoltaic module. The mounting bracket assembly may further comprise an integral grounding device disposed adjacent the top member to electrically ground the electricity generating device.

Abstract: A solar tracker assembly comprises a support column, a torsion beam connected to the support column, a mounting mechanism attached to the torsion beam, a drive system connected to the torsion beam, and a torsion limiter connected to an output of the drive system. When an external force causes a level of torsion on the drive system to exceed a pre-set limit the torsion limiter facilitates rotational movement of the solar tracker assembly in the direction of the torsion, thereby allowing the external force to rotate about a pivot axis extending through the torsion beam. Exemplary embodiments also include methods of aligning a plurality of rows of solar trackers.

Abstract: A mounting bracket assembly comprises a flexible body including at least one top member and a flexible angled bottom member connected to the top member. The flexible body defines a beam insertion aperture between the top member and the bottom member. The mounting bracket assembly further comprises at least one clamp attached to the top member. The mounting bracket assembly may further comprise a threaded rod running through the at least one top member and a clamping nut securing the threaded rod to the top member such that rotating the clamping nut compresses the top member and grounds an electricity generating device such as a photovoltaic module. The mounting bracket assembly may further comprise an integral grounding device disposed adjacent the top member to electrically ground the electricity generating device.

Abstract: A solar tracking system with a plurality of tracking assemblies moved by a single motor. A method and system that prevents overloading the motor or tripping a circuit breaker due to an obstructed or impeded tracker includes sensing movement of the tracker assemblies and entering into obstruction clearing modes. Obstruction clearing mode 1 (OCM1) is a high frequency adjustable mode that prompts movement for an adjustable period of time. If movement commences, the system returns to a normal mode. If there is no movement, the system enters into an obstruction clearing mode 2 (OCM2) with is an adjustable lower frequency series of attempts. If there is no movement, no further attempts are made. Each of these steps are monitored and controlled remotely. There are two types of secure connections for drivelines, torque tubes or affixing driveline linkages for high torque conditions.

Abstract: Mounting assemblies, solar trackers, and methods of reducing the torque load of a solar tracker are provided. A mounting assembly comprises at least one support column, a torsion beam connected to the support column, and a mounting rack attached to the torsion beam. A longitudinal pivot axis extends through the torsion beam. The mounting rack has a substantially flat mounting surface and a curved rear surface such that a weight of one or more components mounted thereto is shifted toward the pivot axis.

Abstract: Mounting assemblies, solar trackers, and methods of reducing the torque load of a solar tracker are provided. A mounting assembly comprises at least one support column, a torsion beam connected to the support column, and a mounting rack attached to the torsion beam. A longitudinal pivot axis extends through the torsion beam. The mounting rack has a rear surface and a curved mounting surface such that a weight of one or more components mounted thereto is shifted toward the pivot axis.

Abstract: A solar tracking system with a torque tube supporting solar panels. Columns support the system and have bearings for rotation of the torque tube. A drive is coupled to the torque tube and is driven by a gearbox, such as a worm gear assembly, for rotating the array of solar panels to follow the sun's diurnal motion. The array can rotate in an opposite direction, or backtrack, to prevent shadowing from one module row to another. Multiple gearboxes can be mechanically linked by drive shafts and driven by a single motor. The drive shafts may incorporate universal joints for uneven terrain or staggered configurations. Harmonic dampers can be affixed to the solar panels to decouple wind forces which allows the use of larger solar panels.

Abstract: A solar tracking system with a torque tube supporting solar panels. Columns support the system and have bearings for rotation of the torque tube. A drive is coupled to the torque tube and is driven by a gearbox, such as a worm gear assembly, for rotating the array of solar panels to follow the sun's diurnal motion. The array can rotate in an opposite direction, or backtrack, to prevent shadowing from one module row to another. Multiple gearboxes can be mechanically linked by drive shafts and driven by a single motor. The drive shafts may incorporate universal joints for uneven terrain or staggered configurations. Harmonic dampers can be affixed to the solar panels to decouple wind forces which allows the use of larger solar panels.

Abstract: A compact solar concentrator photovoltaic module assembly includes a plurality of rear contact solar cells configured in a matrix array on a substrate. The substrate is comprised of conductors laminated to an insulator sheet to form a receiver sheet. A lens sheet on which many lenses have been formed is disposed in a fixed spaced relation to the substrate and operates to focus sunlight onto the active surfaces of the PV cells. The overall thickness of the concentrator module is less than four inches thick. The receiver sheet may be assembled using standard, surface mount printed circuit board assembly techniques. The receiver sheet may have a secondary optical element and may also serve as part of the encapsulant for environmental protection.

Abstract: An ignitor (118) comprises a body portion (120) connected with an electrical supply cable (122) and an electrode portion (124) removably mounted within the body portion (120). The body portion (120) includes a capacitor defined by an outer, electrically conductive shell (126) of the body portion, and an inner, tubular capacitor plate (134). The inner, tubular capacitor plate (134) is held within the body portion (120) by means of a connector assembly (132) which is held in place by a dielectric potting compound (136).

Abstract: A tracker controller system in which a pair of photo-resistive cadmium sulfide sensors mounted in the shadow of a shade pole generate a voltage signal proportional to their resistive values which signal is delivered to a comparator circuit that causes a tracker driver to operate when the voltage signal falls outside of a voltage window established by the comparator circuit.

Abstract: An ignitor (10) for initiation combustion of fuel in an internal combustion engine includes a body portion (12) and a removable electrode portion (14) to permit replacement or repair of the electrodes, so that current is delivered to one of the electrodes (72) along a path through each of the capacitive elements. The body portion includes a pair of capacitive elements defined by longitudinally spaced, radially extending, annular capacitor plates (60, 62, 64, 66) which surround the central electrode (26, 72). The body portion includes an outer, cylindrical shell (16) which is insulated from the capacitive elements by layers (40, 42) of high dielectric material.