Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 28, Issue 10, Pages 4644-4656Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2012.2234139
Keywords
Buck-boost; current source inverter (CSI); energy management; fuel cell (FC); inverters; photovoltaic (PV); single-stage; transformerless
Categories
Funding
- National Council for Scientific and Technological Development [304400/2009-2, 300896/2009-3, 54598/2010-8]
- Foundation for Research Support of the State of Minas Gerais [APQ-02628-10, APQ-02246-11]
- Federal Agency for Support and Evaluation of Graduate Education under PVE [BEX1376/11-0]
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Alternative energy sources have for some time attracted great interest in the area of static converter development. This fact is related in greater part to issues such as sustainability and detrimental effects on the natural environment, which all contribute to the viability of this type of energy source. In this context, power electronics performs important tasks making viable the connection of all these kind of clean power sources to the conventional grid and also to the load. From this perspective, a new challenge must be faced which is the development of energy management systems capable of providing intelligent planning and control of appliances in low-and high-power applications. That being so, this paper intends to contribute presenting a novel dual transformerless single-stage current source inverter fed by a proton exchange membrane fuel cell (PEMFC) and a photovoltaic (PV) array. High voltage gain and totally controlled output voltage can be achieved without using dedicated step-up dc-dc converters or transformers either. The main feature of this inverter structure is the intelligent power management technique which focuses on the extraction of maximum power from the PV array keeping the PEMFC as an energy storage system. Theoretical analysis is presented and corroborated by experimental results of a 400 W laboratory prototype.
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