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5604430 Solar array maximum power tracker with arcjet load
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PatentsALERT
5604133 METHOD OF MAKING PHOTOVOLTAIC DEVICE Aoike Tatsuyuk Nagahama, JAPAN assigned to Canon Kabushiki Kaisha A photovoltaic device produced by successively laminating on a conductive substrate a transparent conductive layer, a silicon containing non-monocrystal layer of a first conductivity type; a silicon containing non-monocrystal layer of an i-type; and a silicon containing non-monocrystal layer of a second conductivity type different from the first conductivity type. The silicon containing non-monocrystal layer of the first conductivity type contains at least one metallic element which constitutes the transparent conductive layer.
5604430 SOLAR ARRAY MAXIMUM POWER TRACKER WITH ARC JET LOAD Decker Darwin K;Baxter Donald L; Lerner Oded; Campbell Jeffrey; Rosenthal Richard A; Cook Michael J Hacienda Heights, CA, UNITED STATES assigned to TRW Inc A solar array maximum power point tracking system for regulating the power output of a solar array associated with a spacecraft. An on-board computer measures the bus voltage and current from the solar array and generates a power calculation of the solar array power output. The on-board computer applies a first reference signal to a remote error amplifier representative of an incremental change in the solar array power. Additionally, the solar array bus voltage is applied to the remote error amplifier such that the remote error amplifier senses the solar array bus voltage and generates an output voltage indicative of the change of the solar array power. The output voltage of the error amplifier is applied to a power processor unit. The output voltage from the remote error amplifier and the bus voltage are applied to a power stage within the power processor unit. The power stage generates an output current
that is applied to an arcjet thruster. The output current is also applied to a transconductive circuit that converts the output current to a voltage so as to condition the input voltage to the power stage.
5605551 PROCESS FOR THE THERMAL CONVERSION OF BIOMASS TO LIQUIDS Scott Donald S; Piskorz Ja; Radlein Desmond; Majerski Piotr Waterloo, CANADA assigned to University of Waterloo PCT No. PCT/CA93/00504 Sec. 371 Date Jul. 31, 1995 Sec. 102(e) Date Jul. 31, 1995 PCT Filed Nov. 24, 1993 PCT Pub. No. WO94/12592 PCT Pub. Date Jun. 9, 1994. A high conversion of biomass, such as wood, sawdust, bark, or agricultural wastes, to liquids is obtained bypyrolysis at short reaction tines in a reactor capable of high heat transfer rates; the reactor being of the fluidized bed, circulating fluidized bed or transport type in which the conveying gas contains low and carefully controlled amounts of oxygen, allowing a reaction system with low concentrations of carbon monoxide or flammable gases with a resulting improvement in operating safety and potential improvement in thermal efficiency and capital costs. The oxidation steps may be carried out in one or two stages. The resulting liquid product may be used as an alternative liquid fuel or as a source of high-value chemicals.
5608268 SOLAR CHIMNEY ARRANGEMENT WITH A LIQUID FILLED NON-EVAPORATIVE AREA USED TO PRE-HEAT A LIQUID FILLED EVAPORATIVE AREA Senanayake Daya R Colombo, SRI LANKA
PatentsALERT
5604133 METHOD OF MAKING PHOTOVOLTAIC DEVICE Aoike Tatsuyuk Nagahama, JAPAN assigned to Canon Kabushiki Kaisha A photovoltaic device produced by successively laminating on a conductive substrate a transparent conductive layer, a silicon containing non-monocrystal layer of a first conductivity type; a silicon containing non-monocrystal layer of an i-type; and a silicon containing non-monocrystal layer of a second conductivity type different from the first conductivity type. The silicon containing non-monocrystal layer of the first conductivity type contains at least one metallic element which constitutes the transparent conductive layer.
5604430 SOLAR ARRAY MAXIMUM POWER TRACKER WITH ARC JET LOAD Decker Darwin K;Baxter Donald L; Lerner Oded; Campbell Jeffrey; Rosenthal Richard A; Cook Michael J Hacienda Heights, CA, UNITED STATES assigned to TRW Inc A solar array maximum power point tracking system for regulating the power output of a solar array associated with a spacecraft. An on-board computer measures the bus voltage and current from the solar array and generates a power calculation of the solar array power output. The on-board computer applies a first reference signal to a remote error amplifier representative of an incremental change in the solar array power. Additionally, the solar array bus voltage is applied to the remote error amplifier such that the remote error amplifier senses the solar array bus voltage and generates an output voltage indicative of the change of the solar array power. The output voltage of the error amplifier is applied to a power processor unit. The output voltage from the remote error amplifier and the bus voltage are applied to a power stage within the power processor unit. The power stage generates an output current
that is applied to an arcjet thruster. The output current is also applied to a transconductive circuit that converts the output current to a voltage so as to condition the input voltage to the power stage.
5605551 PROCESS FOR THE THERMAL CONVERSION OF BIOMASS TO LIQUIDS Scott Donald S; Piskorz Ja; Radlein Desmond; Majerski Piotr Waterloo, CANADA assigned to University of Waterloo PCT No. PCT/CA93/00504 Sec. 371 Date Jul. 31, 1995 Sec. 102(e) Date Jul. 31, 1995 PCT Filed Nov. 24, 1993 PCT Pub. No. WO94/12592 PCT Pub. Date Jun. 9, 1994. A high conversion of biomass, such as wood, sawdust, bark, or agricultural wastes, to liquids is obtained bypyrolysis at short reaction tines in a reactor capable of high heat transfer rates; the reactor being of the fluidized bed, circulating fluidized bed or transport type in which the conveying gas contains low and carefully controlled amounts of oxygen, allowing a reaction system with low concentrations of carbon monoxide or flammable gases with a resulting improvement in operating safety and potential improvement in thermal efficiency and capital costs. The oxidation steps may be carried out in one or two stages. The resulting liquid product may be used as an alternative liquid fuel or as a source of high-value chemicals.
5608268 SOLAR CHIMNEY ARRANGEMENT WITH A LIQUID FILLED NON-EVAPORATIVE AREA USED TO PRE-HEAT A LIQUID FILLED EVAPORATIVE AREA Senanayake Daya R Colombo, SRI LANKA