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Hybrid MPPT Algorithm for PV Systems Under Partially Shaded Conditions Using a Stochastic Evolutionary Search and a Deterministic Hill Climbing

generation , Ren. Sust. En. Rev., 2015, 41, 284–297. [4] K ot R., S tynski S., M alinowski M., Hardware methods for detecting global maximum power point in a PV power plant , Proc. IEEE Int. Conf. Industrial Technology, ICIT, 2015, 2907–2914. [5] L ogeswarana T., S enthilkumarb A., A review of maximum power point tracking algorithms for photovoltaic systems under uniform and non-uniform irradiances , 4th Int. Conf. Advances in Energy Research, ICAER 2013, India, 2013, 228–235. [6] I shaque K., S alam Z., A mjad M., M ekhilef S., An improved

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AN IMPROVED PERTURB AND OBSERVE MPPT ALGORITHM WITH VARIABLE STEP

References [1] Esram, T. and Chapman, P.L., Comparison of Photovoltaic Array Maximum Power Point Tracking Techniques, Energy Conversion, IEEE Transactions on, 22 (43), 2007. [2] Abouobaida, H. and Cherkaoui, M., Comparative study of Maximum Power Point trackers for fast changing environmental conditions, Multimedia Computing and Systems (ICMCS), 2012. [3] Challa, D. T. R. And Raghavendar, I., Implementation of Incremental Conductance MPPT with Direct Control Method Using Cuk Converter, International Journal of

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A novel hysteresis power point optimizer for distributed solar power generation

] S. M. MacAlpine, R. W. Erickson, and M. J. Brandemuehl, “Characterization of Power Optimizer Potential to Increase Energy Capture in Photovoltaic Systems Operating Under Nonuniform Conditions,” IEEE Transactions on Power Electronics, vol. 28, no. 6, pp. 2936-2945, 2013. https://doi.org/10.1109/tpel.2012.2226476 [7] V. Salas, E. Olias, A. Barrado, and A. Lazaro, “Review of the Maximum Power Point Tracking Algorithms for Stand-Alone Photovoltaic Systems,” Solar Energy Materials and Solar Cells, vol. 90, no. 11, pp. 1555-1578, July 2006. https

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The Performance of Direct-Driven Variable Speed Wind Turbine with PMSG and Converter Systems

, 2013, Vol. 10, 261-274. [9] ROLAK M., KOT R., MALINOWSKI M., GORYCA Z., AC/DC Converter with Maximum Power Point Tracking Algorithm for Complex Solution of Small Wind Turbine, Przegląd Elektrotechniczny, 2011, Vol. 87, No. 6, 91-96. [10] SAYEEF S., MENDIS N., MUTTAQI K., PERERA S., Enhanced Reactive Power Support of a PMSG Based Wind Turbine for a Remote Area Power System, 20th Australasian Universities Power Engineering Conference AUPEC, 2010, 1-8. [11] WU B., YONGQIANG L., NAVID Z., SAMIR K., Power Conversion and

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Variable Structure Sliding Mode Control and Direct Torque Control of Wind Power Generation System Based on the Pm Synchronous Generator

Abstract

This paper presents a Variable Structure Sliding Mode Control (VS-SMC) scheme and Direct Torque Control (DTC) for Wind Farm (WF) based on the Permanent Magnet Synchronous Generator (PMSG). The WF consists of a 3 PMSGs which are connected to a common dc bus system with rectifier. The dc-bus is connected to the electrical network using only one inverter system, a grid-side filter as well as the transformer. The efficiency of the WF can be greatly improved using an appropriate control approach. So, the control strategy uses the technique of DTC to regulate the speeds of PMSGs for Maximum Power Point Tracking (MPPT) mode. Besides, by employing VS-SMC the grid-side inverter is controlled to inject the generated power into the electrical network, to regulate DC-link voltage and to achieve Unity Power Factor. The used control strategies provide an optimal control solution for WF systems based on the PMSG.

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High Step-Up DC—DC Converter for AC Photovoltaic Module with MPPT Control

.—CHEN, J. F.: A Cascaded High Step-Up dc-dc Converter with Single Switch for Microsource Applications jour IEEE Trans. Power Electron.. [8] BERNARDO, P. C. M.—PEIXOTO, Z. M. A.—MACHADO NETO, L. V. B.: A High Efficient Micro-Controlled Buck Converter with Maximum Power Point Tracking for Photovoltaic Systemsinbook ICREPQ 09., Valencia-Spain. [9] KUMARI, J. S.—BABU, C. S.: Comparison of Maximum Power Point Tracking Algorithms for Photovoltaic System, IJAET. [10] YU, T. C.—LIN, Y. C.: A Study on Maximum Power Point Tracking Algorithms for Photovoltaic Systems, Lunghwa

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Comparative evaluation of multilevel DC link inverter using symmetrical and asymmetrical DC sources

Abstract

This paper presents a comparative evaluation of multilevel DC link inverter of photovoltaic (PV) renewable energy system using either symmetrical or asymmetrical dc sources. The four units of dc source can have the same dc voltage level, ie 81.32 V, resulting in symmetrical dc sources. The asymmetrical dc sources consist of input dc voltages in binary sequence, 21.68 V, 43.37 V, 86.74 V and 173.48 V. The boost converters with maximum power point tracking (MPPT) capability which is regulated by perturb and observe (P&O) based control are connected between the PV panels and the four dc sources. The varying dc voltages from the PV panels are regulated to track the maximum power available regardless of the irradiance and temperature conditions. The symmetrical dc sources will facilitate the generation of 9 levels of staircase ac waveform rms of 230 V after the H-bridge inverter. Whereas, the asymmetrical dc sources are able to produce 31 levels of staircase ac waveform also with rated rms 230 V. Detailed analysis and comparison on the powers, ac output voltage, output current, total harmonic distortions, and MPPT achievement are described.

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Development of Solar Powered Feeding Scheme for Wireless Sensor Networks in low Solar Density Conditions / Bezvadu Sensoru Tīklu Elektroapgādes Sistēmas Izstrāde, Kas Izmanto Saules Paneļus Un Darbojas Pazeminātas Saules Radiācijas Apstākļos

- Photovoltaic Cell I-V Characterization Theory and LabVIEW Analysis Code. (2012). Retrieved 20 May 2015, from http://www.ni.com/white-paper/7230/en/. 11. Onat, N. (2010). Recent developments in maximum power point tracking technologies for photovoltaic systems. International Journal of Photoenergy 2010 , Article ID 245316 (11 p.). 12. Chao, K. H., and Li, C. J. (2010). An intelligent maximum power point tracking method based on extension theory for PV systems. Expert Systems with Applications 37 (2), 1050-1055. 13

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A Measurement and Power Line Communication System Design for Renewable Smart Grids

References [1] Singh, G.K. (2008). Modelling and experimental analysis of a self-excited six-phase induction generator for stand-alone renewable energy generation. Renewable Energy , 33 (7), 1605-1621. [2] Ansari, M.F., Chatterji, S., Iqbal, A. (2010). Automatic maximum power point tracker for solar PV modules using dSPACE software. International Journal of Sustainable Energy , 29 (3), 151-163. [3] Alvarado, U., Juanicorena, A., Adin, I., Sedano, B., Gutiérrez, I., de Nó, J. (2012). Energy harvesting

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Cuckoo Search Algorithm for Optimal Placement and Sizing of Static Var Compensator in Large-Scale Power Systems

optimization, differential evolution and artificial bee colony algorithms. Artificial Intelligence Review, 39(4), 2013, 315-346. [9] Moravej, Z., & Akhlaghi, A., A novel approach based on cuckoo search for DG allocation in distribution network. International Journal of Electrical Power & Energy Systems, 44(1), 2013, 672-679. [10] Ahmed, J., & Salam, Z., A Maximum Power Point Tracking (MPPT) for PV system using Cuckoo Search with partial shading capability. Applied Energy, 119, 2014, 118-130. [11] Vo, D. N., Schegner, P

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