TY - GEN
T1 - Interfacing photovoltaic panels via a capacitive converter
AU - Shmilovitz, D.
AU - Singer, S.
PY - 2002
Y1 - 2002
N2 - Photovoltaic panels are most often connected to a DC bus via an electronic power converter. This converter either performs a simple power management task or might be used also for Maximum Power Point Tracking (MPPT). MPPT circuits couple the output terminals of photovoltaic panels (or arrays) to the electrical load while attempting to provide impedance matching by operating the solar panel at its maximum power point. Operation at the maximum power point is maintained against variations in insulation level, temperature, and solar cells aging. This task is performed by means of a closed loop control scheme, which continuously tunes the dc transfer ratio of the converter. The main property required from the converter is high efficiency; therefore the converter is implemented via a switched mode circuit. In this paper, a novel topology for the switched mode converter is proposed in which the means of incremental energy transfer is a capacitive switching cell rather than the conventional inductive cell. Thus this new type of converter might benefit of reduced volume and weight. A simulation example is provided for a 100Watt converter running at a switching frequency of 100kHz. Than, it is validated by an experimental prototype, which showed efficiency above 90%.
AB - Photovoltaic panels are most often connected to a DC bus via an electronic power converter. This converter either performs a simple power management task or might be used also for Maximum Power Point Tracking (MPPT). MPPT circuits couple the output terminals of photovoltaic panels (or arrays) to the electrical load while attempting to provide impedance matching by operating the solar panel at its maximum power point. Operation at the maximum power point is maintained against variations in insulation level, temperature, and solar cells aging. This task is performed by means of a closed loop control scheme, which continuously tunes the dc transfer ratio of the converter. The main property required from the converter is high efficiency; therefore the converter is implemented via a switched mode circuit. In this paper, a novel topology for the switched mode converter is proposed in which the means of incremental energy transfer is a capacitive switching cell rather than the conventional inductive cell. Thus this new type of converter might benefit of reduced volume and weight. A simulation example is provided for a 100Watt converter running at a switching frequency of 100kHz. Than, it is validated by an experimental prototype, which showed efficiency above 90%.
UR - http://www.scopus.com/inward/record.url?scp=57649169650&partnerID=8YFLogxK
U2 - 10.1109/EEEI.2002.1178378
DO - 10.1109/EEEI.2002.1178378
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AN - SCOPUS:57649169650
T3 - IEEE Convention of Electrical and Electronics Engineers in Israel, Proceedings
SP - 160
EP - 162
BT - 22nd Convention of Electrical and Electronics Engineers in Israel, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 22nd Convention of Electrical and Electronics Engineers in Israel
Y2 - 1 December 2002
ER -
