Method of and system for controlling a photovoltaic power system

Details Method of and system for controlling a photovoltaic power system Method of and system for controlling a photovoltaic power system

1985-10-17

1987-03-10

Wong, Peter S.

Electricity: power supply or regulation systems

Input level responsive

323906, 363 95, G05F 500

Patent

active

046493344

ABSTRACT:
In a method of and a system for controlling a photovoltaic power system including a solar battery and a power converter receiving the output of the solar battery, the voltage of the solar battery is kept at a voltage reference which is determined in accordance with the operating condition of the system thereby to maximize the power of the solar battery. Operating mode is switched between a first mode in which the voltage reference is periodically decreased and a second mode in which the voltage reference is periodically increased. The switching between the first and the second mode is effected in accordance with the direction of change of the power and the voltage of the solar battery. Where there is a reactance between the solar battery and the point at which the voltage or the current is detected, or a time lag element in a voltage detector or a current detector, an arrangement may be provided to compensate detection error due to the reactance or the time lag element.

REFERENCES:
patent: 4390940 (1983-06-01), Corbefin et al.
patent: 4404472 (1983-09-01), Steigerwald
patent: 4494180 (1985-01-01), Streater et al.
patent: 4510434 (1985-04-01), Assbeck et al.
O. Wasynezuk, "Dynamic Behavior of A Class of Photovoltaic Power Systems", pp. 1-7, IEEE 1983.

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