4-Phase Interleaved Boost Converter With IC Controller for Distributed Photovoltaic Systems

We present a DC-DC converter for photovoltaic (PV) applications that is suitable for distributed power conversion obtained by transferring part of the electronics from the inverter to the module. The proposed circuit implements a high-efficiency four-phase interleaved boost converter employing relat...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems. I, Regular papers Regular papers, 2013-11, Vol.60 (11), p.3090-3102
Main Authors: Pulvirenti, Francesco, La Scala, Amedeo, Ragonese, Domenico, D'Souza, Keith, Tina, Giuseppe M., Pennisi, Salvatore
Format: Article
Language:English
Subjects:
Algorithms
Boards
Boost converter
Capacitors
Circuits
Converters
Efficiency
Electric power
Electronics
Inductors
Integrated circuits
interleaved converter
Inverters
Maximum power point trackers
MPPT
photovoltaic
Photovoltaic cells
Power conversion
power conversion efficiency
Solar cells
Switches
switching DC-DC converter
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Summary:We present a DC-DC converter for photovoltaic (PV) applications that is suitable for distributed power conversion obtained by transferring part of the electronics from the inverter to the module. The proposed circuit implements a high-efficiency four-phase interleaved boost converter employing relatively low-valued inductive and capacitive components. Its compact realization is made possible thanks to the innovative design of a dedicated integrated circuit (IC) embedding the power MOS switches and performing the converter control section as well as the Maximum Power Point Tracking (MPPT) algorithm. The solution is designed for a maximum delivered power of 300 W and to work with an MPPT voltage between 9 V and 36 V, with maximum allowed panel current of 9 A. The area of the complete printed-circuit board is 4 cm × 7 cm. Experimental measurements show that the average power conversion efficiency is between 93% and 99% and that the MPPT efficiency is always greater than 99.7%.
ISSN:1549-8328
1558-0806
DOI:10.1109/TCSI.2013.2256235