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Grid Interactive Bidirectional Solar PV Array Fed Water Pumping System ABSTRACT: This paper proposes a grid interactive bidirectional solar water pumping system using a three phase induction motor drive (IMD). A single phase voltage source converter (VSC) is used to direct the flow of power from grid supply to the pump and back to the grid from SPV array. A boost converter is used for the maximum power point tracking (MPPT) of the SPV array. A smart power sharing control is proposed, with preference given to the power from SPV array over the grid power. Moreover, the grid input power quality is also improved. Various modes of operation of the pump are elaborated and the performance of the system at starting, in steady state and dynamic conditions are simulated. The simulated results show the novelty and the satisfactory performance of the system.
KEYWORDS: 1. Solar water pump 2. MPPT 3. Grid interactive 4. Smart power sharing
SOFTWARE: MATLAB/SIMULINK
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0-9347143789/9949240245 CIRCUIT DIAGRAM:
Fig. 1. Configuration for the single phase grid interactive SPV water pumping system
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0-9347143789/9949240245 EXPECTED SIMULATION RESULTS:
Fig. 2(a) Starting performance of the proposed system in mode I
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Fig. 3(b) Steady state performance of the proposed system in mode I
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Fig. 4(c) Performance of the system in mode I under decreasing radiation from 800 W/m2 to 500 W/m2
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Fig. 5(d) Performance of the system in mode I under increasing radiation from 500 W/m2 to 800 W/m2
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Fig. 6(a) Starting performance of the system in mode II
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Fig. 7(b) Steady state performance of the system in mode II
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Fig. 8(a) Characteristics of the system in mode III with decrease in Radiation
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Fig. 9(b) Characteristics of the system in mode III with increase in Radiation
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Fig. 10(a) Characteristics of the system in mode IV with increase in Radiation
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Fig. 11 (b) Characteristics of the system in mode III with decrease in radiation
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0-9347143789/9949240245 CONCLUSION: A single phase grid interactive solar water pumping is presented in the paper. Various modes of operation are identified and simulated in MATLAB Simulink environment. The simulated results have demonstrated the satisfactory performance of the system at starting, and in steady and dynamic conditions. The proposed system not only is able to share the power between two sources but it also improves the quality of power drawn. Moreover, the system manages to feed the power from the SPV array as in when required. The system is well suited for the rural and agricultural usage.
REFERENCES: [1] J. Zhu, “Application of Renewable Energy,” in Optimization of Power System Operation, Wiley-IEEE Press, 2015, p. 664. [2] Z. Ying, M. Liao, X. Yang, C. Han, J. Li, J. Li, Y. Li, P. Gao, and J. Ye, “High-Performance Black Multicrystalline Silicon Solar Cells by a Highly Simplified Metal-Catalyzed Chemical Etching Method,” IEEE J. Photovolt., vol. PP, no. 99, pp. 1–06, 2016. [3] M. Steiner, G. Siefer, T. Schmidt, M. Wiesenfarth, F. Dimroth, and A. W. Bett, “43% Sunlight to Electricity Conversion Efficiency Using CPV,” IEEE J. Photovolt., vol. PP, no. 99, pp. 1–5, 2016. [4] M. Kolhe, J. C. Joshi, and D. P. Kothari, “Performance analysis of a directly coupled photovoltaic water-pumping system,” IEEE Trans. Energy Convers., vol. 19, no. 3, pp. 613–618, Sep. 2004. [5] S. R. Bhat, A. Pittet, and B. S. Sonde, “Performance Optimization of Induction Motor-Pump System Using Photovoltaic Energy Source,” IEEE Trans. Ind. Appl., vol. IA-23, no. 6, pp. 995– 1000, Nov. 1987.
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