Methods for the Optimal Design of Grid - Connected PV Inverters

Frede Blaabjerg, Eftichios Koutroulis

Abstract


The DC/AC inverters are used in grid-connected PV energy production systems as the power processing interface between the PV energy source and the electric grid. The energy injected into the electric grid by the PV installation depends on the amount of power extracted from the PV power source and the efficient processing of this power by the DC/AC inverter. In this paper two new methods are presented for the optimal design of a PV inverter power section, output filter and MPPT control strategy. The influences of the electric grid regulations and standards as well as the PV array operational characteristics on the design of grid-connected PV inverters have been considered. The proposed methods have been applied for the optimal design of PV inverters installed at various sites in Europe. The simulation results verify that the proposed optimization techniques enable the maximization of the PV energy injected into the electric grid, thus serving as a tool to gain more energy by the optimized PV installation.

Keywords


Photovoltaic power systems; DC-AC power conversion; Design methodology; Optimization methods

Full Text:

Invited Paper [PDF]

References


T. Kerekes, R. Teodorescu, P. Rodríguez, G. Vázquez, E. Aldabas, “A new high-efficiency single-phase transformerless PV inverter topologyâ€, IEEE Transactions on Industrial Electronics, Vol. 58, No. 1, pp. 184-191, January 2011.

S. Vasconcelos Araújo, P. Zacharias, R. Mallwitz, “Highly efficient single-phase transformerless inverters for grid-connected photovoltaic systemsâ€, IEEE Transactions on Industrial Electronics, Vol. 57, No. 9, pp. 3118-3128, 2010.

G. Vazquez, T. Kerekes, A. Rolan, D. Aguilar, A. Luna, G. Azevedo, “Losses and CMV evaluation in transformerless grid-connected PV topologiesâ€, IEEE International Symposium on Industrial Electronics, pp. 544-548, 2009.

Huafeng Xiao, Shaojun Xie, Yang Chen, Ruhai Huang, “An optimized transformerless photovoltaic grid-connected inverterâ€, IEEE Transactions on Industrial Electronics, Vol. 58 , No. 5, pp. 1887-1895, 2011.

F. Blaabjerg, F. Iov, T. Kerekes, R. Teodorescu, “Trends in power electronics and control of renewable energy systemsâ€, 14th International Power Electronics and Motion Control Conference (EPE/PEMC), pp. 1-19, 2010.

E. Figueres, G. Garcera, J. Sandia, F. Gonzalez-Espin, J.C. Rubio, “Sensitivity study of the dynamics of three-phase photovoltaic inverters with an LCL grid filterâ€, IEEE Transactions on Industrial Electronics, Vol. 56 , No. 3, pp. 706-717, 2009.

J.M. Guerrero, F. Blaabjerg, T. Zhelev, K. Hemmes, E. Monmasson, S. Jemei, M.P. Comech, R. Granadino, J.I. Frau, “Distributed Generation: toward a new energy paradigmâ€, IEEE Industrial Electronics Magazine, Vol. 4 , Issue 1, pp. 52-64, 2010.

C. Cecati, F. Ciancetta, P. Siano, “A multilevel inverter for photovoltaic systems with fuzzy logic controlâ€, IEEE Transactions on Industrial Electronics, Vol. 57, No. 12, pp. 4115-4125, December 2010.

H. Patel, V. Agarwal, “MPPT scheme for a PV-fed single-phase single-stage grid-connected inverter operating in CCM with only one current sensorâ€, IEEE Transactions on Energy Conversion, Vol. 24, No. 1, pp. 256-263, 2009.

D. Floricau, G. Gateau, A. Leredde, R. Teodorescu, “The efficiency of three-level active NPC converter for different PWM strategiesâ€, 13th European Conference on Power Electronics and Applications, pp. 1-9, 2009.

L. Ma, X. Jin, T. Kerekes, M. Liserre, R. Teodorescu, P. Rodriguez, “The PWM strategies of grid-connected distributed generation active NPC invertersâ€, IEEE Energy Conversion Congress and Exposition (ECCE ’09), pp. 920-927, 2009.

N.A. Rahim, J. Selvaraj, “Multistring five-level inverter with novel PWM control scheme for PV applicationâ€, IEEE Transactions on Industrial Electronics, Vol. 57, No. 6, pp. 2111-2123, 2010.

S.R. Pulikanti, M.S.A. Dahidah, V.G. Agelidis, “SHE-PWM switching strategies for active neutral point clamped multilevel convertersâ€, Australasian Universities Power Engineering Conference, pp. 1-7, 2008.

S.B. Kjaer, J.K. Pedersen, F. Blaabjerg, “A review of single-phase grid-connected inverters for photovoltaic modulesâ€, IEEE Transactions on Industry Applications, Vol. 41, No. 5, pp. 1292-1306, September 2005.

B. Giesler, “String vs. Central inverters: Dimension of the inverterâ€, Photon’s 1st PV Inverter Conference, Stuttgart, Germany, pp. 1-23, April 2010.

S. Balachandran, F.C.Y. Lee, “Algorithms for power converter design optimizationâ€, IEEE Transactions on Aerospace and Electronic Systems, Vol. 17, No. 3, pp. 422-432, May 1981.

E. Koutroulis, F. Blaabjerg, “Design optimization of grid-connected PV invertersâ€, 26th Annual IEEE Applied Power Electronics Conference and Exposition, pp. 691-698, 2011.

J. Biela, U. Badstuebner, J.W. Kolar, “Design of a 5-kW, 1-U, 10-kW/dm3 resonant DC-DC converter for telecom applicationsâ€, IEEE Transactions on Power Electronics, Vol. 24, No. 7, pp. 1701-1710, July 2009.

T.C. Neugebauer, D.J. Perreault, “Computer-aided optimization of DC/DC converters for automotive applicationsâ€, IEEE Transactions on Power Electronics, Vol. 18, No. 3, pp. 775-783, May 2003.

A. Parayandeh, C. Pang, A. Prodic, “Digitally controlled low-power DC-DC converter with instantaneous on-line efficiency optimizationâ€, 24th Annual IEEE Applied Power Electronics Conference and Exposition, pp. 159-163, 2009.

M. Campbell, J. Blunden, E. Smeloff, P. Aschenbrenner, “Minimizing utility-scale PV power plant LCOE through the use of high capacity factor configurationsâ€, 34th IEEE Photovoltaic Specialists Conference, pp. 421-426, 2009.

A. Ristow, M. Begovic, A. Pregelj, A. Rohatgi, “Development of a Methodology for Improving Photovoltaic Inverter Reliabilityâ€, IEEE Transactions on Industrial Electronics, Vol. 55 , No. 7, pp. 2581-2592, 2008.

E. Lorenzo, Solar electricity - Engineering of photovoltaic systems, 1st ed., Progensa, 1994.

T. Kerekes, R. Teodorescu, M. Liserre, R. Mastromauro, A. Dell'Aquila, “MPPT algorithm for voltage controlled PV invertersâ€, 11th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM ’08), pp. 427-432, 2008.

M. Liserre, F. Blaabjerg, S. Hansen, “Design and control of an LCL-filter-based three-phase active rectifierâ€, IEEE Transactions on Industry Applications, Vol. 41, No. 5, pp. 1281-1291, 2005.

Sushant Kumar Pattnaik, K.K. Mahapatra, “Power loss estimation for PWM and soft-switching inverter using RDCLIâ€, International MultiConference of Engineers and Computer Scientists, pp. 1401-1406, 2010.

Chee Lim Nge, O.-M. Midtgard, L. Norum, T.O. Saetre, “Power loss analysis for single phase grid-connected PV invertersâ€, 31st International Telecommunications Energy Conference, pp. 1-5, 2009.




DOI (Invited Paper [PDF]): https://doi.org/10.20508/ijrer.v1i2.68.g30

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