TY - GEN
T1 - Grid-connected boost inverter for small-wind urban integration
T2 - 38th Annual Conference on IEEE Industrial Electronics Society, IECON 2012
AU - Flores-Bahamonde, Freddy
AU - Valderrama-Blavi, Hugo
AU - Bosque, Josep M.
AU - Leon-Masich, Antonio
AU - Martinez-Salamero, Luis
PY - 2012/12/1
Y1 - 2012/12/1
N2 - Small grid-connected PV-systems are quite usual in domestic roofs, but urban integration is still an open issue for wind systems. Similarly to grid PV systems, direct grid injection in a wind system requires two stages, a PFC boost rectifier and a grid-tie inverter. Nevertheless, although a buck inverter is a common choice in many grid PV systems, this topology imposing a minimum DC-Link voltage complicates the boost stage design, because the voltage variation range of a wind alternator, greater than the variation margin of a PV-array, would be absorbed only by the first converter. Consequently, we propose to share the voltage gain between both processor stages, using step-up voltage inverter instead of a buck one. In this work, boost and buck-boost based inverters are analyzed, and finally, a sliding mode controlled boost inverter with bipolar operation is proposed. To demonstrate the feasibility of this proposal, some relevant experimental results from a 1kW inverter prototype are given
AB - Small grid-connected PV-systems are quite usual in domestic roofs, but urban integration is still an open issue for wind systems. Similarly to grid PV systems, direct grid injection in a wind system requires two stages, a PFC boost rectifier and a grid-tie inverter. Nevertheless, although a buck inverter is a common choice in many grid PV systems, this topology imposing a minimum DC-Link voltage complicates the boost stage design, because the voltage variation range of a wind alternator, greater than the variation margin of a PV-array, would be absorbed only by the first converter. Consequently, we propose to share the voltage gain between both processor stages, using step-up voltage inverter instead of a buck one. In this work, boost and buck-boost based inverters are analyzed, and finally, a sliding mode controlled boost inverter with bipolar operation is proposed. To demonstrate the feasibility of this proposal, some relevant experimental results from a 1kW inverter prototype are given
UR - http://www.scopus.com/inward/record.url?scp=84872959954&partnerID=8YFLogxK
U2 - 10.1109/IECON.2012.6388783
DO - 10.1109/IECON.2012.6388783
M3 - Conference contribution
AN - SCOPUS:84872959954
SN - 9781467324212
T3 - IECON Proceedings (Industrial Electronics Conference)
SP - 433
EP - 439
BT - Proceedings, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society
Y2 - 25 October 2012 through 28 October 2012
ER -