Solar power generation apparatus and power control device theref

Details Solar power generation apparatus and power control device theref Solar power generation apparatus and power control device theref

1997-09-03

1999-02-09

Nguyen, Matthew

Electricity: power supply or regulation systems

Input level responsive

363 79, G05F 500

Patent

active

058699562

ABSTRACT:
In order to extract maximum power from a solar cell, maximum power point tracking (MPPT) control is performed under ordinary circumstances. If the output current of the solar cell becomes too small, the operating point of the solar cell is caused to fluctuate over a range wider than that of MPPT control at a period longer than that of MPPT control and the output voltage and current of the solar cell is sampled. In a case where it is indicated by power values obtained from the sample voltage values and current values that a plurality of maximal points of power value exist, a voltage value corresponding to a power value indicative of the largest value is set as the operating point of the solar cell.

REFERENCES:
patent: 4649334 (1987-03-01), Nakajima
patent: 4868379 (1989-09-01), West
patent: 5654883 (1997-08-01), Takehara et al.
patent: 5682305 (1997-10-01), Kurokami et al.

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