Method and apparatus for controlling the power of a battery powe

Details Method and apparatus for controlling the power of a battery powe Method and apparatus for controlling the power of a battery powe

1994-11-10

1997-10-28

Wong, Peter S.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

323906, 323299, G05F 500

Patent

active

056823053

ABSTRACT:
A power control method and apparatus for extracting the maximum power from a battery power source are disclosed. Voltage signals and current signals are read while varying the operating point of a solar cell acting as the battery power source. The variation in the intensity of solar radiation that has occurred during a sampling time interval is estimated from a plurality of current signals, sampled at the same voltage, or, according to a plurality of power values, calculated from current signals and voltage signals. Based on the estimated variation in the intensity of solar radiation, the current signals or power signals are corrected. According to the corrected current signals or according to the corrected power values and the voltage values, the operating point is controlled so that the maximum output power is provided from the solar cell.

REFERENCES:
patent: 4390940 (1983-06-01), Corbefin et al.
patent: 4649334 (1987-03-01), Nakajima
patent: 4899269 (1990-02-01), Rouzies
patent: 4916382 (1990-04-01), Kent
patent: 5235266 (1993-08-01), Schaffrin
patent: 5375429 (1994-12-01), Tokizaki et al.
Gwonjong Yu et al. `Application of Instantaneous Sinusoidal Current Tracking Control Inverter to Photovoltaic System`, Proceedings of the International Photovoltaic Science and Engineering Conference, Nov. 26 1990, pp. 661-664.

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