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Energies 2012, 5(10), 3736-3752; doi:10.3390/en5103736
Article

Transient Analysis of Large Scale PV Systems with Floating DC Section

1
,
1
,
1
,
2,*  and 1
1 Politecnico di Milano, Via La Masa 34, 20156 Milan, Italy 2 University Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania
* Author to whom correspondence should be addressed.
Received: 27 July 2012 / Accepted: 13 September 2012 / Published: 26 September 2012
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Abstract

The increasing penetration of renewable sources with power-electronic interfaces in power systems is raising technical problems and the overall efficiency of photovoltaic systems can decrease dramatically. In this context, the optimal layout for the photovoltaic system is required. The most adequate strategy to connect the renewable system to the electrical power grid or to supply the end users must be adopted. The present paper proposes a design layout of a PV plant using a DC bus system to improve the overall energy conversion efficiency. An analysis of steady-state system stability, voltage drop and DC cable conduction losses is conducted. The leakage currents to the ground are investigated through simulations. Experimental results are shown focused on the analysis of optimal layout of photovoltaic systems under particular operating conditions.
Keywords: large scale PV system; distributed DC/DC conversion; harmonic disturbances; power quality large scale PV system; distributed DC/DC conversion; harmonic disturbances; power quality
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Brenna, M.; Dolara, A.; Foiadelli, F.; Lazaroiu, G.C.; Leva, S. Transient Analysis of Large Scale PV Systems with Floating DC Section. Energies 2012, 5, 3736-3752.

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