3262results about "Light radiation electric generator" patented technology

An interlocking photovoltaic module mounting system that provides a one piece, integrated photovoltaic module frame portion that is directly mountable to a support structure and interlocks with separate adjoining photovoltaic module frame portions. The apparatus includes a frame member for enclosing the perimeter of a photovoltaic module, having an inside surface and outside surface, with the inside surface including a recess for capture of the panel. The frame member outside surface includes at least one interlocking means for affixation to the complementary outside surface of an adjacent frame-member. The frame member includes a height-adjustable foot portion for supporting the frame member on a roof, so that adjacent frame members may be interlocked to form an array, and the foot portion may be adjusted to level the formed array on the roof.

Electrochemical cells, and more specifically, rechargeable batteries comprising lithium anodes for use in water and / or air environments, as well as non-aqueous and non-air environments, are presented. In one embodiment, an electrochemical cell includes an anode comprising lithium and a multi-layered structure positioned between the anode and an electrolyte of the cell. A multi-layered structure can include at least a first single-ion conductive material layer (e.g., a lithiated metal layer), and at least a first polymeric layer positioned between the anode and the single-ion conductive material. The invention also can provide an electrode stabilization layer positioned within the electrode, i.e., between one portion and another portion of an electrode, to control depletion and re-plating of electrode material upon charge and discharge of a battery. Advantageously, electrochemical cells comprising combinations of structures described herein are not only compatible with environments that are typically unsuitable for lithium, but the cells may be also capable of displaying long cycle life, high lithium cycling efficiency, and high energy density.

A combiner box is used to collect direct current from solar panels or other energy sources. The combiner box integrates all means necessary for ground fault detection, current monitoring, voltage monitoring, and power monitoring. The combiner box may include a communication interface suitable for Web enabled monitoring, electronic notifications of system status, and / or remote control of system functions. In one embodiment, the combiner box uses integrated circuits and printed circuit board technology to achieve new efficiencies in manufacturing, installation and system analysis at the string level. A separate hand piece may be used by installers to test the performance of the combiner box, installation of the solar panels, performance of the solar panels and connections between the solar panels and the combiner box.

A solar cell regulator in a nanosatellite includes a pulse width modulated DC-DC boost converter and a peak power tracking controller for converting solar cell power to bus power for charging of system batteries and powering loads while the controller controls the pulse width modulation operation of the converter for sensing solar cell currents and voltages along a power characteristic curve of the solar cell for peak power tracking, for determining any power data point, including a peak power point, an open circuit voltage point, and a short circuit current point along the power characteristic curve of the solar cell, and for communicating the power data to a satellite processor for monitoring the performance of the solar cell during operational use of the satellite.

A control circuit for a switching DC / DC Converter comprising: an input for an indicator signal indicative of an output current level from said converter; a peak detector for detecting and storing a maximum value of said indicator signal; a comparator element for comparing an instantaneous value of said indicator signal with said stored maximum value, and for generating a switching signal when said instantaneous value becomes less than a predetermined fraction of said stored value; reinitializer means for reinitializing said peak detector in response to said switching signal; and means for generating a control signal that switches between a state in which it increases over time and a state in which it decreases over time in response to said switching signal. A control module for photovoltaic generator, the module including such a control circuit, and a photovoltaic generator system comprising a plurality of such modules, each controlling a respective photovoltaic generator.

AC module, integrating a solar battery and an inverter, can easily be connected with other plural AC modules in parallel by way of cascade connections. However, when the number of AC modules connected is improvidently increased, the current flowing through the current path or connector of the AC module exceeds a rated current. In view of this, the current detector detects a current in the collective-power current path of the AC module, and when the detected current value exceeds a value set in the reference current setting circuit, the current detector stops the inverter.

The invention relates to photovoltaic modules with a specific thermoplastic adhesive layer and the production thereof.

A DC power-generation array system (30) is made up of an array (32) of power-generation cells (36) arranged as N strings (38) of M cells (36) each. The system (30) incorporates an integral control apparatus (34) having N string units (52) and a single process unit (54). Each string unit (52) is coupled to one of the strings (38), and is made up of monitor module (72) to measure a string current (IS(X)) through that string (38), and a switching module (74) to switch that string (38) into and out of the array (32). The process unit (54) is made up of a processor (90) to evaluate the string currents (IS(X), and a data I / O module (98) to provide a remote monitoring and control of the system (30). The system (30) also has an interface unit (92) to provide local monitoring and control of the system (30). The processor (90) causes the switching modules (74) to couple or decouple strings (38) from array (32) under automatic, remote, and / or local control.

Optoelectronic device modules, arrays optoelectronic device modules and methods for fabricating optoelectronic device modules are disclosed. The device modules are made using a starting substrate having an insulator layer sandwiched between a bottom electrode made of a flexible bulk conductor and a conductive back plane. An active layer is disposed between the bottom electrode and a transparent conducting layer. One or more electrical contacts between the transparent conducting layer and the back plane are formed through the transparent conducting layer, the active layer, the flexible bulk conductor and the insulating layer. The electrical contacts are electrically isolated from the active layer, the bottom electrode and the insulating layer.

A method and apparatus for converting Direct Current (DC) to Alternating Current (AC). The method comprises performing system analysis on at least one of a DC current, DC voltage, or an AC voltage; utilizing the system analysis for selecting at least one conversion parameter; and converting DC to AC utilizing the at least one conversion parameter.

An apparatus for powering a load from solar energy comprises a DC / DC converter, battery terminals coupled to an output of the DC / DC converter and coupleable to an energy storage device, and solar panel terminals coupled to an input of the DC / DC converter and coupleable to a solar panel. Logic is coupled to the converter to control its conversion rate. A detector is coupled to the converter and detects its power output. The logic is operable to adjust the conversion rate until the solar panel operates at the smaller of a maximum power point of the solar panel and a power point of the solar panel that results in a maximum desired power.

The present invention discloses a portable solar tarp or a field portable battery charger employing a solar tarp, utilizing flexible solar panels, solar fabric, or solar film. Around the perimeter of the solar tarp is a series of attachment points for straps. The attachment points can be grommets, loops, buckles, hooks, buttons, or grab loops and lines, and to which connected various straps (webbing, line, cord, or cable). The present invention further discloses a versatile, adjustable strapping system utilizing straps, buckles, and hooks. The present invention strapping system can attach almost any object to nearly any other object, such as back packs, luggage, vehicles, boats, permanent and portable shelters and buildings, mechanical equipment, and natural objects such as trees, rocks. The solar panel according to the present invention can have the photovoltaic cells wired individually, or in a single line, because when parts of the photovoltaic system is subjected to shade, or if due to space constraint, parts of the photovoltaic system is covered or folded away, the remaining photovoltaic cells with useable energy are still able to function at peak capacity, since the covered cells will not become an energy drain upon the remaining cells. Further, the photovoltaic system is able to harness all available energy, regardless of the required or desired voltage and / or amperage for the system, thus converting any and all available energy into a useable current to either recharge batteries, or power a load.

A photovoltaic system includes a photovoltaic generator, and a thermo switch which reduces an output voltage of the photovoltaic generator in response to a trigger temperature. The photovoltaic generator may include a plurality of photovoltaic cells which are arranged in series to form a photovoltaic module. The module has ends, each of which having an electric module terminal pole, wherein the thermo switch is rendered operative in response to the trigger temperature to short-circuit the module terminal poles and to thereby reduce the output voltage generated by the photovoltaic generator.

With small dimensional optics, small photovoltaic cells have heat distribution surfaces, very high concentrations and subsequently high utilization of the semiconductors can be achieved. Discrete photodiodes can be formed as spherical and other geometric shaped, cells with high performance characteristics, precision dimensions, and low cost. This invention positions discrete photovoltaic cells by using their geometric shape, elastic electrical mounts, couples them to small optical concentrator systems of refractory and or reflective optics and makes electrical network connections to those photodiodes, reliably, adjusting for thermal expansion, and at low cost to form low cost and reliable electrical power arrays. The electrical connectors and network can form part of the reflective optics and heat removal system. The electrical interconnection system can also form a reliable network that is self-correcting and tolerant of point failures.

Methods and devices are provided for improved environmental protection for photovoltaic devices and assemblies. In one embodiment, the device comprises of an individually encapsulated solar cell, wherein the encapsulated solar cell includes at least one protective layer coupled to at least one surface of the solar cell and the protective layer may be formed from a substantially inorganic material. The protective layer has a chemical composition that prevents moisture from entering the solar cell and wherein light passes through the protective layer to reach an absorber layer in the solar cell.

In one embodiment, harmful solar cell polarization is prevented or minimized by providing a conductive path that bleeds charge from a front side of a solar cell to the bulk of a wafer. The conductive path may include patterned holes in a dielectric passivation layer, a conductive anti-reflective coating, or layers of conductive material formed on the top or bottom surface of an anti-reflective coating, for example. Harmful solar cell polarization may also be prevented by biasing a region of a solar cell module on the front side of the solar cell.

Solar panels and assembled arrays thereof include a collection of relatively compact, high-capacity power units. Optical components of each power unit include a front window or surface glazing, a primary mirror, secondary mirror and receiver assembly. Primary and secondary mirrors are defined by respective perimeters, at least a portion of which may be substantially coplanar and in contact with the front window. Some primary mirrors are configured with a perimeter of alternating full and truncated sections, and are curved to a base portion forming a pilot hole therein. Receiver assembly mechanical components include an alignment tube for mating with the primary mirror's pilot hole and for housing a photovoltaic solar cell. A base plate provided adjacent to the alignment tube serves to radiate heat emitted by the solar cell, and in some embodiments an additional heat sink provides further passive cooling. A tapered optical rod also provided within the receiver assembly directs received sunlight to the solar cell where electrical current is generated.

A thin film solar cell includes: a transparent conductive film arranged on a translucent insulating substrate; first and second separation trenches orthogonal to each other on the translucent insulating substrate and separating the transparent conductive film; and a first opening trench parallel to the first separation trench and second opening trenches parallel to said second separation trench, orthogonal to each other on the translucent insulating substrate; wherein solar cells formed on the translucent insulating substrate are arranged at adjacent positions with said first opening trench positioned therebetween and at adjacent positions with said second opening trench positioned therebetween; pairs of said solar cells adjacent to each other with said first opening trench positioned therebetween are electrically connected, and among pairs of solar cells positioned adjacent to each other with the second opening trench in between, some are electrically connected to each other, and others are electrically insulated from each other. Method of manufacturing the thin film solar cell is also provided.

Systems and materials to improve photovoltaic cell efficiency by implementing a self-cleaning function on photovoltaic cells and on albedo surfaces associated with photovoltaic cell assemblies are provided. Materials for protecting albedo surfaces that surround photovoltaic cell assemblies, thereby maximizing energy input into the photovoltaic cell assemblies, are provided. Materials for self-cleaning photovoltaic cell panels, thereby maintaining their efficiency, are provided. Portable albedo collecting devices associated with photovoltaic cell assemblies are provided.

An integrated optical system and method employs an optical concentrator, a spectral splitting assembly for splitting incident light into multiple beams of light, each with a different nominal spectral bandwidth; and an array of optical detector sites wherein each of the detector sites has a nominal spectral response and wherein the detector sites are spatially arranged to provide an arrangement of said detector sites which are spatially variant relative to said nominal spectral responses. Such a system can be used for purposes such as optical detection and solar collection to provide improved efficiency. Improved efficiency of collection and manufacture are obtainable with using such devices.

A compound film for an active layer of a photovoltaic device may be formed in two or more sub-layers. A first sub-layer having a first component of the active layer may be formed on a substrate with a first process. A second sub-layer including a second component of the active layer may then be formed using a second process such that the first sub-layer is disposed between the second sub-layer and the substrate. The second component has a different chemical composition than the first component. The first and / or second sub-layer may comprise one or more components in the form of particles and / or globules. This procedure may be repeated any number of times for any number of sub-layers so that active layer can be built up sequentially. The different chemical compositions of the components in the sub-layers can provide the active layer with a graded bandgap. The components of the sub-layers may include elements of group IB, and / or group IIIA. One or more elements of group VIA can be incorporated into the components of the sub-layers before, during or after formation of the layers.

The energy conversion system includes a first optical cover having a flat surface and a patterned surface. The patterned surface is configured to receive solar energy from the flat surface, then concentrate and guide the solar energy. The system also includes a second optical cover. The system further includes providing a photovoltaic cell layer between the patterned surface of the first optical cover and the second optical cover. The photovoltaic cell layer is configured to receive the solar energy from the patterned surface and convert the solar energy into electrical energy.

A collapsible PV assembly comprises a PV module, a front support and a rear support assembly. The front and rear supports are secured to the front and rear edges of the PV module. The rear support assembly comprises a wind deflector assembly including a wind deflector which can be placed in a downwardly and outwardly extending use orientation and a storage orientation, extending along the lower surface of the PV module. In some embodiments the wind deflector assembly is pivotally connected to the PV module.

The present invention relates to photovoltaic concentrating modules and related concentrating solar systems and methods. In particular, the present invention relates to concentrating modules, especially modules having a convenient size and market acceptance of traditional flat photovoltaic solar panels.

A modular shade system with solar tracking panels includes a series of generally North-South oriented, spaced apart torque tubes, each torque tube having an axis, a series of panels mounted to at least some of the torque tubes to create spaced-apart rows of panels along the torque tubes, at least some of the panels being solar collector panels. The system also includes a shade structure, positioned at a selected location between selected ones of the torque tubes and above the support surface so to provide an enhanced shaded region thereunder, and a support structure. The support structure includes a first mounting assembly mounting each torque tube above the support surface for rotation about the axis of each torque tube and a second mounting assembly supporting the shade structure at the selected location. The system further comprises a tilting assembly selectively rotating each torque tube about its axis.