Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1980-12-08
1982-07-27
Weisstuch, Aaron
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
136291, 136293, 204228, 323304, 323364, 323906, C25B 102, H01L 3104
Patent
active
043416071
ABSTRACT:
A solar power system has a photovoltaic array having a locus of peak power points for various insolation levels, a voltage-dependent variable resistance load such as a water electrolysis unit electrically connected to the array, and a demand-dependent variable resistance load such as a DC to AC inverter connected in parallel with the electrolysis unit. The electrolysis unit or other voltage-dependent variable resistance load has a voltage-current characteristic in which the operating point is displaced from the array's peak power point for most insolation levels. The characteristic is displaced towards higher voltage-lower current operating points. The inverter may move the operating point of the photovoltaic array toward its peak power point when the load requires power. The system may be designed so that the array operates within about 5 percent of its peak power point over a wide range of inverter power demands. A fuel cell may be connected in parallel with the array to provide power to the inverter at low insolation levels, at night or in low sunlight. The fuel cell may use the hydrogen produced by the electrolysis unit for fuel. The total photovoltaic power made available by the system of this invention is generally greater than 95 percent and often greater than 98 percent of the maximum power which the photovoltaic array may produce for many insolation levels.
REFERENCES:
patent: 3384806 (1968-05-01), Hartman
patent: 3696286 (1972-10-01), Ule
patent: 4009051 (1977-02-01), Kazis et al.
patent: 4080221 (1978-03-01), Manelas
patent: 4160816 (1979-07-01), Williams et al.
D. M. Divan et al., "Maximisation of Operating Efficiency of Solar Cells", Energy Conversion, vol. 17, pp. 183-188 (1977).
R. L. Pickerell et al., "An Inverter/Controller Subsystem Optimized for Photovoltaic Applications," Conf. Record, 13th IEEE Photovoltaic Specialists Conf. (1978), pp. 984-991.
E:F Technology, Inc.
Speckman Thomas W.
Weisstuch Aaron
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