Electrical transmission or interconnection systems – Plural supply circuits or sources – One source floats across or compensates for other source
Patent
1981-12-28
1983-09-13
Beha, Jr., William H.
Electrical transmission or interconnection systems
Plural supply circuits or sources
One source floats across or compensates for other source
320 32, 323906, 363 80, H02J 338
Patent
active
044044720
ABSTRACT:
An analog and a digital control is provided which causes a dc to ac inverter operated in the constant power mode to supply sinusoidal current to a utility while drawing maximum power from a solar array. The current drawn from the array is forced to be proportional to the array voltage by a variable gain amplifier so that the inverter presents a resistive load to the array which remains statically stable under rapid changes of insolation while using a perturb-and-observe method of maximum power tracking. The perturb-and-observe method adjusts the gain of the variable gain amplifier to achieve maximum power output from the solar array.
REFERENCES:
patent: 3384806 (1968-05-01), Hartman
patent: 3626198 (1971-12-01), Boehringer
patent: 4059772 (1977-11-01), Wilkerson
"An Inverter/Controller Subsystem Optomized for Photovoltaic Applications," Conf: 13th IEEE Photovoltaic Specialists Conf., 1978, pp. 984-991, Wash. D.C., USA (Jun. 5-8, 1978).
"The Design of a Photovoltaic System for a Southwest All-Electric Residence", Feb. 1980, Sandia National Lab., Sand 79-7056, pp. 5-26/5-28.
Beha Jr. William H.
Davis Jr. James C.
General Electric Company
Snyder Marvin
Steinberg William H.
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