PhotoVoltaic DC-DC module integrated converter for novel cascaded and bypass grid connection topologies - design and optimisation

Walker, Geoffrey R. and Pierce, Jordan C. (2006). PhotoVoltaic DC-DC module integrated converter for novel cascaded and bypass grid connection topologies - design and optimisation. In: 37th IEEE Power Electronics Specialists Conference (PESC'06). 37th IEEE Power Electronics Specialists Conference (PESC'06), Jeju, Korea, (3094-3100). 18-22 June 2006. doi:10.1109/PESC.2006.1712242


Author Walker, Geoffrey R.
Pierce, Jordan C.
Title of paper PhotoVoltaic DC-DC module integrated converter for novel cascaded and bypass grid connection topologies - design and optimisation
Conference name 37th IEEE Power Electronics Specialists Conference (PESC'06)
Conference location Jeju, Korea
Conference dates 18-22 June 2006
Proceedings title 37th IEEE Power Electronics Specialists Conference (PESC'06)
Journal name PESC Record - IEEE Annual Power Electronics Specialists Conference
Place of Publication Piscataway, NJ, United States
Publisher IEEE
Publication Year 2006
Sub-type Fully published paper
DOI 10.1109/PESC.2006.1712242
ISBN 0780397169
978-078039716-3
ISSN 0275-9306
Start page 3094
End page 3100
Total pages 7
Collection year 2006
Language eng
Abstract/Summary Grid connected PhotoVoltaic (PV) inverters fall into three broad categories — Central, String and Module Integrated Converers (MICs). MICs offer any avantaes in performance and flexibility, but are at a cost disadvantage. Two alternative novel approaches proposed by the author — cascaded dc-dc MICs and bypass dc-dc MICs — integrate a simple non-isolated intelligent dc-dc converter with each PV module to provide the advantages of dc-ac MICs at a lower cost. A suitable universal 150W 5A dc-dc converter design is presented based on two interleaved MOSFET half bridges. Testing shows Zero Voltage Switching (ZVS) keeps losses under 1W for bi-directional power flows up to 15W between two adjacent 12V PV modules for the bypass application, and efficiencies over 94% for most of the operational power range for the cascaded converter application. Based on the experimental results, potential optimizations to further reduce losses are discussed.
Subjects EX
290901 Electrical Engineering
660402 Residential and commercial
Q-Index Code E1
Institutional Status UQ
Additional Notes Article number 1712242

 
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Created: Thu, 23 Aug 2007, 22:16:30 EST