263results about "Photovoltaic energy generation" patented technology

A mirror or other reflecting surface is used for collecting and reflecting incident solar radiation. The mirror is supported for independent motion about a pair of axes. An accelerometer generates signals representative of an amount and direction of motion of the mirror about each of the axes. Motors or other drive mechanisms independently drive the mirror about each of the axes. A tracking device provides information about the current position of the Sun. A control is connected to the accelerometer, the motors and the tracking device for maintaining a predetermined optimum orientation of the mirror as the Sun moves across the sky. Position sensors that sense the position of the mirror relative to the earth's magnetic field may also be employed.

A luminescent solar collector is provided comprising a substrate and a light energy converter, such as a photocell, operatively connected thereto. The substrate is molded from a thermoplastic composition comprising a polymer and a fluorescent dye or quantum dot dispersed therein. The polymer comprises a polycarbonate unit and a polyester unit derived from the reaction of isophthalic acid, terephthalic acid, and resorcinol (ITR). In further embodiments, the substrate comprises two or more layers including a fluorescent layer and an overcoat layer. The fluorescent layer comprises the fluorescent dye or quantum dot and a polycarbonate polymer. The overcoat layer comprises the ITR unit. The substrate, in single layer or multiple layer form, has reduced haze levels over a prolonged period of time.

The invention discloses an organic light emitting display panel and a manufacturing method. The organic light emitting display panel comprises a substrate base plate; a light emitting element layer, located on a substrate base plate and provided with a plurality of first grooves; and a packaging layer, located above the light emitting element layer and filled in the plurality of first grooves. According to the invention, the plurality of first grooves are arranged in the light emitting element layer so that the packaging layer packaged above the light emitting element layer is filled in the plurality of first grooves, that is, a pinning structure is formed between the packaging layer and the light emitting element layer, thereby enhancing the adhesion between the packaging layer and the light emitting element layer and avoiding the stripping between the packaging layer and the light emitting element layer in a bending process.

A solar cell includes a doped layer disposed on a first surface of a semiconductor substrate, a doped polysilicon layer disposed in a first region of a second surface of the semiconductor substrate, a doped area disposed in a second region of the second surface, and an insulating layer covering the doped polysilicon layer and the doped area. The insulating layer has openings exposing portions of the doped polysilicon layer and the doped layer, and the doped polysilicon layer and doped layer are respectively connected to a first electrode and a second electrode through the openings. The semiconductor substrate and the doped layer have a first doping type. One of the doped polysilicon layer and the doping area has a second doping type, and the other one of the doped polysilicon layer and the doping area has the first doping type which is opposite to the second doping type.

A solar-energy conversion (SEC) array (24) and method of operation are presented. The array (24) has an aim direction (48) substantially coincident with a solar direction (50) when the array (24) is operational. The array (24) is made up of an array-support structure (26), and a plurality of SEC clusters (28). Each cluster (28) is made up of a number of SEC units (44) and a single cell-support structure (32). Each SEC unit (44) is made up of a concave mirror (30) coupled to the array-support structure (26), and a cell assembly (34). The cell assembly (34) is made up of a cell housing (68) containing an SEC cell (72), and a passive heat-extraction unit (70) thermally coupled to the cell (72) and configured to extract and dissipate heat. The cell-support structure (32) is made up of a support column (56) coupled to the array-support structure (26), and individual support arms (60) coupling each of cell assemblies (34) to the support column (56).

Disclosed is a porous electrode comprising a porous film (A) with through pores and an electrically conducting material selected from the group consisting of conductor and semiconductor, the porous film (A) having an average pore size d1 of from 0.02 to 3 μm and a porosity of from 40 to 90%, the electrically conducting material being filled in the through pores of the porous film (A). A dye-sensitized solar cell and an electric double layer capacitor including the porous electrode as a constituent are also disclosed.

A mounting system for supporting a plurality of photovoltaic modules on a sloped support surface, such as a sloped roof, is disclosed herein. The mounting system may include one or more support surface attachment devices, each support surface attachment device configured to attach one or more photovoltaic modules to a support surface; and one or more module coupling devices, each module coupling device configured to couple a plurality of photovoltaic modules to one another.

A quad photoreceiver includes a low capacitance quad InGaAs p-i-n photodiode structure formed on an InP (100) substrate. The photodiode includes a substrate providing a buffer layer having a metal contact on its bottom portion serving as a common cathode for receiving a bias voltage, and successive layers deposited on its top portion, the first layer being drift layer, the second being an absorption layer, the third being a cap layer divided into four quarter pie shaped sections spaced apart, with metal contacts being deposited on outermost top portions of each section to provide output terminals, the top portions being active regions for detecting light. Four transimpedance amplifiers have input terminals electrically connected to individual output terminals of each p-i-n photodiode.

The invention relates to a folding type display apparatus and electric equipment. The folding type display apparatus comprises a flexible display section, and a plurality of housings, which includes a first housing having a space formed therein, and second and third housings bendably connected to both ends of the first housing. The display section is fixed to the second and third housings, and in a closed state of the second and third housings, a folding portion of the display section is housed in the space formed by the first housing, while in an open state of the second and third housings away from each other, the display section becomes flat, and the first housing functions as a leg protruding from flat surfaces of the second and third housings, so that the second and third housings are fixed to each other and the folding portion of the display section is supported, by a holding member for connecting these housings.

A distributed solar power generation and hot water supplying system includes: a photovoltaic power generation self-service sun tracking system, an inverter, a controller, a storage battery, a heat-exchanging water tank and an electric heater provided therein, wherein a solar battery and a solar collector are mounted on the photovoltaic power generation self-service sun tracking system, an electricity output terminal of the photovoltaic power generation self-service sun tracking system is respectively connected to an inversing input terminal of an inverter and a surplus power supplying input terminal of a controller; an MCU-controlled power output terminal of the inverter is respectively connected for off-grid power consumption or grid-connected power generation, and to an inversing output terminal of the controller; a charging/discharging control output/input terminal inside the inverter is connected to an input/output terminal of the storage battery and a storage battery power supplying input terminal of the controller.

The invention relates to a modeling method for a grid-connected photovoltaic power supply based on a PSASP (power system analysis software package). The method comprises the following steps of (1) firstly building a three-phase photovoltaic power supply simulation system and utilizing a conventional simulation verification method to perform simulation verification; (2) and then building a UD (user-defined) model of the photovoltaic power supply in the PSASP: a. establishing transfer functions for various parts of the photovoltaic power supply, drawing various functional block diagrams, establishing connecting relationships among the functional block diagrams and designating input and output relationships, i.e. the UD model of the photovoltaic power supply is established; b. balancing the initial value of the UD module; and c. solidifying the UD model in the PSASP. The modeling method provided by the invention has the advantages that the safe and stable running situation of the overall power grid after the grid-connected photovoltaic power supply is operated can be analyzed and researched in detail, thereby providing a predicable solution for the stability problem possibly produced after the photovoltaic power generation is connected in the grid, and improving the capability for switching the power grid in the photovoltaic power generation and the capability for stable running of the system after the power grid is switched-in.

The invention discloses low-temperature conductive silver paste and a preparation method and application thereof. Silver nano wires and silver powder in conventional conductive silver paste are mixed to form novel low temperature conductive silver paste. The content of silver powder in conventional conductive silver paste is greatly reduced, and a few silver nano wires play good conductive effect. Conventional conductive silver paste requires circular silver particles which contact point-to-point to realize conduction, the silver nano wires can serially connect original silver particles, and the silver nano wires form a conductive network in a network shape. Conductive films, conductive switches, flexible print circuit boards, electromagnetic shields, potentiometers, wireless radio frequency identification systems and solar cells formed by the low-temperature conductive silver paste have better bending resistance performance.

The object of the present invention is to provide a thin film which has excellent heat resistance and water resistance together with excellent flexibility, and a thin film laminate comprising the thin film, and the present invention provides a thin film comprising a heat-resistant fluid between layers comprising heat-resistant flakes.

Provided are a silver nanowire conductive film coated with an oxidation protection layer and a method for fabricating the same. A silver nanowire conductive film coated with an oxidation protection layer includes: a substrate; silver nanowires disposed on the substrate; and an oxidation protection layer coated on the silver nanowires, wherein the oxidation protection layer comprises an oxide.

An illumination apparatus of the present invention quickly adjusts illuminance of the light radiated from the light source in the irradiation surface to have high uniformity. The illumination apparatus includes the light source that emits a light beam having a rectangular shape, a DMD on which light emitted from the light source is incident and which controls reflection/non-reflection of the incident light by opening/closing control of minute mirrors, an optical system that shapes the light reflected by the DMD, a half mirror that splits the light emitted from the optical system into irradiation light and monitor light, the irradiation surface irradiated with the irradiation light, a monitor unit that measures illuminance of the monitor light, and a control unit that transmits a control signal to control opening/closing of the minute mirrors of the DMD to the DMD, based on a measurement result measured by the monitor unit. In this case, an illuminance distribution in the irradiation surface is adjusted to a predetermined value.

The invention provides a real-time tracking and predicting control method for a maximum photovoltaic power point. The real-time tracking and predicting control method for the maximum photovoltaic power point comprises the following steps of: S1), establishing an environmental factor and a maximum photovoltaic power point function model in a photovoltaic controller, and establishing an output current and voltage mathematical model of the photovoltaic controller for real-time output current in the environmental factor and the maximum photovoltaic power point function model in the photovoltaic controller; S2), establishing photovoltaic controller mathematical modeling and a state space model, and establishing a constraint condition for the photovoltaic controller used for controlling output current; S3), establishing a real-time tracking and predicting target function, and establishing a performance index used for determining the target function; and S4), solving the target function under the constraint condition, and obtaining an optimal control sequence used for tracking the maximum photovoltaic power point. According to the real-time tracking and predicting control method for the maximum photovoltaic power point, which is disclosed by the invention, the real-time model prediction control of the photovoltaic system under the quickly-changed external environment condition can be realized so as to improve the predicting and tracking capability of the maximum photovoltaic power point.

Thin film photovoltaic devices are generally provided. In one embodiment, the device includes a high index layer (e.g., having a refractive index of about 2 or more) on a glass substrate and a low index layer (e.g., having a refractive index of about 1.5 or less) on the high index layer. A transparent conductive oxide layer is positioned on the low index layer, and a photovoltaic heterojunction (e.g., a cadmium sulfide layer and a cadmium telluride layer) is positioned on the transparent conductive oxide layer. In an alternative embodiment, the device can include the low index layer on the glass substrate and the high index layer on the low index layer. Methods are also generally provided for manufacturing such thin film photovoltaic devices.

The present disclosure passivates solar cell defects. Plasma immersion ion implantation (PIII) is used to repair the defects during or after making the solar cell. Hydrogen ion is implanted into absorption layer with different sums of energy to fill gaps of defects or surface recombination centers. Thus, solar cell defects are diminished and carriers are transferred with improved photovoltaic conversion efficiency.

A method of establishing a relationship between access nodes in a wireless communications network is provided. An access node is registered with the network. Information about each access node registered with the network is then stored at a control node. A list is then compiled at the control node, which includes each access node registered with the network and the list indicates which access node is a neighbour of another access node. This neighbour list is sent from the control node to each access node in the network. When an access node detects other access nodes, this is reported to the control node, which updates the neighbour list to the access nodes.

The invention relates to a stand-alone renewable-energy generating device which generates electric energy from renewable energy sources, such as the sun or wind, in a stand-alone context, i.e. without being connected to a power grid. To allow users to asses their contribution to carbon dioxide emission savings, the invention provides a sensor element that is adapted to generate emission savings data representative of electric energy units generated by using a renewable energy device. Further, a clock device is comprised that is adapted to generate a time data representative of at least one of a time and a date specification and unique sensor-ID data are stored in a memory. A processor unit is adapted to time-stamp the emission savings data by combining it with the time data. The processor unit retrieves the sensor-ID data to combine them with the emission savings data to form savings profile data. A communication interface is adapted to communicate the savings profile data directly or indirectly via a network system. The sensor element may be provided integrated in a stand-alone renewable-energy generating device or in a separate emission savings sensor. The invention also relates to a method of maintaining user data associated with a savings profile data and sharing the savings profile data on the communications network. The sharing of these data aims to motivate further use of renewable energy devices.

The invention discloses a photovoltaic power generation support mounting structure and a photovoltaic power generation support construction method. The mounting structure includes a press block, a recessed gasket, a purlin, a square nut, and a long bolt. The long bolt successively passes through the press block and the purlin to be fixedly connected to the square nut. The press block fits photovoltaic assemblies on top and bottom rows through press flanges on two sides. The recessed gasket is arranged between the photovoltaic assemblies and the purlin. The long bolt is an M8*100 bolt in specification. The construction method includes the steps of constructing a pile foundation, assembling a tripod of a photovoltaic support, making the tripod stand, mounting the purlin, and mounting a photovoltaic plate. The mounting structure is simple, reasonable in design and convenient to mount, the mounting time is short, the mounting efficiency is effectively improved, and safety hidden troubles are eliminated.

A solar cell and a fabricating method thereof are provided. In the method of fabricating the solar cell, a p-type semiconductor substrate on whose light-receiving surface an anti-reflection coating is formed is loaded into a processing chamber. In this case, the p-type semiconductor substrate may be loaded on a substrate support of an apparatus of processing a plurality of substrates along the circumference of the substrate support, in the state where the back surface of the p-type semiconductor substrate faces upward. Then, a back surface field (BSF) layer having the characteristic of Negative Fixed Charge (NFC) is formed with AlO, AlN or ALON on the back surface of the p-type semiconductor substrate. At this time, the BSF layer may be formed by simultaneously injecting an Al source gas, a first purge gas, an oxidizing agent gas and/or a ntiriding agent gas, and a second purge gas through injection holes of individual gas injection units while relatively rotating the substrate support with respect to the shower head. Thereafter, a back surface electrode is formed on the BSF layer such that the back surface electrode is electrically connected to the BSF layer.