Power converter control for automatic maximum power point...

Details Power converter control for automatic maximum power point... Power converter control for automatic maximum power point...

2006-05-30

2006-05-30

Riley, Shawn (Department: 2838)

Electrical transmission or interconnection systems

Switching systems

Condition responsive

C250S203400

Reexamination Certificate

active

07053506

ABSTRACT:
The invention concerns a method and a circuit for maximum power point tracking of a variable power source from a comparison of an image of the power (P) supplied by the power source, the circuit comprising two elements (14, 31) providing different propagating delays to a physical quantity proportional to the power image, a comparator (16) of the outputs of the delaying elements to control a trigger (17) supplying a signal (Q) with two automatic control states to a static power converter, and means (33) for detecting a transitory operating condition from variations in oscillations of an established operating condition and means (32) for modifying the delay input by the slower delaying element (31).

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“A Novel Grid Interface for Photovoltaic, Wind-Electric, and Fuel Cell Systems with a Controllable Power Factor of Operation”; R. Naik et al., Proceedings of the Annual Applied Power Electronics Conference and Exposition (APEX), Dallas, Mar. 5, 1995, New York, IEEE, vol. 2, Conf. 10, pp. 995-998; XP000528123; ISBN: 0-7803-2483-8.
“Integrated Photovoltaic Maximum Power Point Tracking Converter”, Johan H.R. Enslin et al., IEEE Transactions on Industrial Electronics, IEEE Inc., New York, vol. 44, No. 6, Dec. 12, 1997, pp. 769-773; CP000750720; ISSN: 0278-0046.

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