Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7394237 | Maxium power point tracking method and tracking device thereof for a solar power system A maximum power point tracking method, applied to a tracking device, employs a DC/DC converter connecting with a solar cell array, and including a controller actuating the DC/DC converter to perform an active resistance characteristic; a maximum power point tracking... | 07/01/2008 |
| 7275501 | System and method using capacitors to power an automatic feeder system A method and apparatus relates to systems powered by energy stored in capacitors. The capacitors may be charged using any desired power source. The system does not require batteries, which increases the reliability and life span of the system. In one example, an aut... | 10/02/2007 |
| 7269036 | Method and apparatus for adjusting wakeup time in electrical power converter systems and transformer isolation An electrical power converter system adjusts a wakeup voltage periodically, to permit earlier connection and/or operation, to increase performance. The electrical power converter system selects between a mathematically adjusted wakeup voltage based on at least one p... | 09/11/2007 |
| 7148650 | Maximum power point motor control A method and apparatus are implemented in software to control motor speed as a function of available power in a DC source-inverter-AC motor system, i.e. to perform maximum power tracking of motor speed. An inverter or motor drive converts DC power from a DC source, ... | 12/12/2006 |
| 7126294 | Method and device for controlling photovoltaic inverter, and feed water device A photovoltaic inverter control method includes steps of monitoring a variation in output voltage of a solar battery by a power and voltage monitoring circuit (51) and, when the variation occurs, accelerating or decelerating an electric motor (3) to ma... | 10/24/2006 |
| 7112896 | Power system with load matrix A method and system for delivering electrical energy from multiple power supplies to multiple loads. Each power supply can have multiple independent outputs. Each load is coupled in a matrix pattern to at least one output from each of the different power supplies. T... | 09/26/2006 |
| 7110273 | Inverter controlling method An inverter controlling method is provided for a power system that includes a DC power source and a plurality of inverters connected in parallel to the power source. The method includes the steps of: measuring output power of the power source at a plurality of perio... | 09/19/2006 |
| 7079406 | Power converting apparatus, control method therefor, and solar power generation apparatus The object is to reliably detect a ground fault of a solar battery. To detect a ground fault position to take an efficient measure against the ground fault, DC power input from a solar battery is converted into AC power and supplied to a system. In a system intercon... | 07/18/2006 |
| 7057102 | Solar cell module and portable electronic apparatus with it A solar battery module (5) is provided by forming a solar battery (13) on a surface on one side of an insulating substrate (12) and forming an electrode thin film (11), which is connectable to a reference potential (32) and integra... | 06/06/2006 |
| 7049803 | Solar modules with a transparent polyurethane front side and a process for producing same Solar modules in which the front side is composed of transparent polyurethane are made by RIM, injection molding and casting processes and combinations thereof. ... | 05/23/2006 |
| 7030597 | Photovoltaic-type charger A method of producing a photovoltaic panel that includes elementary photovoltaic cells in series and in parallel and intended for charging a low-voltage electrical energy accumulator via a voltage converter includes wiring a minimum number of elementary cells in ser... | 04/18/2006 |
| 6984970 | Conditioning circuit for a power supply at the maximum power point, a solar generator, and a conditioning method The invention relates to a conditioning circuit that measures operating points of a power supply to deduce therefrom the current-voltage characteristic thereof and to determine directly the voltage corresponding to its maximum power point, without using any kind of ... | 01/10/2006 |
| 6979771 | Photovoltaic module, photovoltaic module array, photovoltaic system, and method of detecting failure of photovoltaic module The present invention provides a photovoltaic module comprising a photovoltaics and a signal generation means for generating a signal by application of a voltage, wherein the photovoltaics and the signal generating means are connected in parallel and the voltage is ... | 12/27/2005 |
| 6979989 | Maximum power sensor for photovoltaic system A maximum power level sensor and method for reliably providing instantaneous estimates of maximum power level for a photovoltaic system including one or more photovoltaic cells under prevailing conditions of irradiance, array temperature and spectrum of sunlight. Th... | 12/27/2005 |
| 6922348 | Water supply According to the present invention, in a water supply apparatus which converts output power of a solar cell with an inverter to drive a motor pump for pumping up water, a DC brushless motor having no sensor for detecting a position of a rotatable shaft is used as a ... | 07/26/2005 |
| 6919714 | Circuit for conditioning a supply at the maximum power point A circuit for conditioning a power supply whose graph of the power supplied as a function of the voltage at the terminals of the supply features a maximum comprises a DC/DC converter with an input to which power is supplied by the power supply and an output from whi... | 07/19/2005 |
| 6911593 | Transparent self-cleaning dust shield A transparent electromagnetic shield to protect solar panels and the like from dust deposition. The shield is a panel of clear non-conducting (dielectric) material with embedded parallel electrodes. The panel is coated with a semiconducting film. Desirably the elect... | 06/28/2005 |
| 6889122 | Load controller and method to enhance effective capacity of a photovoltaic power supply using a dynamically determined expected peak loading A load controller and method are provided for maximizing effective capacity of a non-controllable, renewable power supply coupled to a variable electrical load also coupled to a conventional power grid. Effective capacity is enhanced by monitoring power output of th... | 05/03/2005 |
| 6884934 | Solar-battery array, and photovoltaic power generation system A solar-battery array comprising a plurality of solar batteries, which is characterized by satisfying the relationship of V20, where V1 is the voltage to ground of the positive-pole terminal at the time of max... | 04/26/2005 |
| 6858791 | Method for managing a photovoltaic solar module and a photovoltaic solar module In a solar module (1) comprising a plurality of individual solar cells (2) connected together electrically in series, with at least one solar cell (5, 6) exposed to the same conditions and not linked to the other solar cells, which serves as sen... | 02/22/2005 |
| 6847834 | Mobile terminal with a solar cell A mobile terminal with a solar cell is disclosed. The mobile terminal has a main body, a battery and a flip cover. A receiver portion, a data display and a keypad are formed on the upper surface of the main body. The improvement comprises a solar cell attached to th... | 01/25/2005 |
| 6812396 | Photovoltaic power generation system A solar cell array having an exposed electroactive portion is connected to a system power supply through an insulation transformer, a ground-fault interrupter is provided between the solar cell array and the system power supply, and a ground-fault detector is provid... | 11/02/2004 |
| 6800802 | Circuit device for solar energy application A circuit device for solar energy application includes a solar panel as power supply and a rechargeable cell pack for receiving the power transferred from the solar panel. The circuit device uses a MOSFET as a current blocking device. The Drain and the Source of the... | 10/05/2004 |
| 6791024 | Power converter, and photovoltaic element module and power generator using the same To improve the conversion efficiency of a power converter in a solar cell module in which a solar cell module main body containing a solar cell is integrated with a power converter for converting the output power from the solar cell module main body, a material havi... | 09/14/2004 |
| 6774299 | Solar electric alternating current generator A device consisting of solar photovoltaic cells, a solar activated dc motor, contact brushes and wiring to transfer the electric current to the applied load. The cells are mounted on vanes attached to a central shaft that is made to rotate by the dc motor. The elect... | 08/10/2004 |
| 6768047 | Autonomous solid state lighting system An autonomous solid state lighting system has a charge mode which collects energy and produces electric power with a solid state energy source, converts the voltage of the electric power using a bi-directional power converter, and stores the power in an energy stora... | 07/27/2004 |
| 6750391 | Aternating current photovoltaic building block A modular apparatus for and method of alternating current photovoltaic power generation comprising via a photovoltaic module, generating power in the form of direct current; and converting direct current to alternating current and exporting power via one or more pow... | 06/15/2004 |
| 6744236 | Energy regulation system for an electrical power supply bus The present invention relates to an electrical energy regulator system for a power supply bus, the system including: an electrical energy storage unit, a solar generator having a plurality of cells, a system for regulating the bus power supply v... | 06/01/2004 |
| 6686534 | Small-scaled portable electrical power generator The present invention provides a small-scaled portable electrical power generator comprising a base, which includes an assembly surface, a fuel chamber, and at least one fuel delivery channels connected to the fuel chamber and placed under the assembly su... | 02/03/2004 |
| 6678176 | Method and apparatus for a solar power conditioner A method and apparatus for supplementing electrical power production during peak demand power consumption is presented. A solar power conditioner converts DC electrical power provided by solar panels (or otherwise) to AC power and uses this to supplement ... | 01/13/2004 |
| 6660929 | Electrical power module and system Light sources are mounted within a light-proof enclosure in which photovoltaic panels are mounted to produce electrical power irrespective of weather conditions outside the enclosure.... | 12/09/2003 |
| 6657118 | Solar battery module, method of manufacturing same and power generating apparatus If an inverter is merely attached to the back side of a solar battery module, the inverter becomes an obstacle to transport and installation, it may be broken if it strikes a building structure at the time of installation and it may malfunction owing to i... | 12/02/2003 |
| 6635817 | Solar cell array having lattice or matrix structure and method of arranging solar cells and panels A solar cell array is provided having a lattice or matrix structure such that no two solar cell devices are connected purely in series or purely in parallel. Accordingly, if a single solar cell device fails, there is an alternate path by which the output ... | 10/21/2003 |
| 6624350 | Solar power management system A solar power management system includes a plurality of photovoltaic cell panels, and a solar power cell manager coupled to the photovoltaic cell panels. The solar power cell manager includes an input stage for combining current draws from the photovoltai... | 09/23/2003 |
| 6605881 | AC interconnection apparatus supplying AC power from a commercial power system and from a solar cell An AC interconnection apparatus has an input terminal for a commercial power system, a connection terminal to a solar cell, an output terminal connected to a load, an inverter for converting the output voltage of the solar cell into an AC voltage, and a c... | 08/12/2003 |
| 6593520 | Solar power generation apparatus and control method therefor When a ground fault occurs in some solar battery string, this solar battery string may be disconnected and operation of a solar power generation system may be continued. If the open-circuit voltage of the solar battery string is high, a safety problem ari... | 07/15/2003 |
| 6593521 | Power converter integrated solar cell module This invention is a power converter integrated solar cell module having a power converter mounted on the rear surface of a solar cell module. This solar cell module has a structure by which the power converter is attached to a low-temperature portion on t... | 07/15/2003 |
| 6587051 | Power converting apparatus and burglarproof method therefor As the application range of solar power generation systems widens, a number of relatively compact and lightweight inverters must be installed outdoors. However, an inverter has no burglarproof function at all. A burglarproof device which switches the stat... | 07/01/2003 |
| 6583522 | Switchable multiple source power supply In a readily switchable multiple solar panel system, the individual solar panels are interconnected with a control or switching apparatus which allows the solar panels to be readily switched into various series, parallel, or series-parallel configurations... | 06/24/2003 |
| 6576830 | Solar cell roof structure, construction method thereof, photovoltaic power generating apparatus, and building In a solar cell roof structure, a photovoltaic power generating apparatus, a building and a method of construction of a solar cell roof, in which a solar cell module is provided above a roof base of a building, an electrical wire for the solar cell module... | 06/10/2003 |
