Improvement of Solar Energy System Under Partial Shading Conditions in Koneru Lakshmaiah Education Foundation


  • B Bhargavi
  • P Linga Reddy





Matlab/Simulink, Partial shading Photovoltaic cells.


This paper consists of grid connected Solar photovoltaic (SPV) system. An output of SPV depends on the irradiation and temperature. Sometimes PV module is shaded due to nearby buildings, passing clouds etc. Power extracted from such partially shaded PV array is reduced. . The PV system at KLEF deemed to be university is considered. Total Harmonic Distortion (THD) and the output powers  are  computed using Matlab/Simulink using LC filter .These are compared with the actual values measured from the existing system . It is found that percentage of THD is reduced.




[1] D.Hohm,M.E.Ropp,“Comparative study of maximum power point tracking algorithmsâ€,ProceedingsPhotovoltaic,RES.Appl.,11,47-62.

[2] D.Sera, T.Kerekes, R. Teodorescu, and F. Blaabjerg, “ Improved MPPT Method for Rapidly Changing Environmental Conditions,†in Proc. IEEE Int Ind. Electron. Symp., Jul. 2006, vol.2, pp. 1420-1425.

[3] Houssamo, I., Locment, F, Schilarju, M: “Maximum Power Tracking for Photovoltaic Power system: Development and experimental comparison of two algorithmsâ€, Renewable Energy, 2010, 35 (10), pp. 2381-2387.

[4] Kjear, S.B, Pedersen, J.K, Blaabjerg, F: “A review of single phase grid connected inverters for photo voltaic modulesâ€, IEEE Transaction on ,Industry Application Sept-Oct. 2005, 41 (5), pp. 1292-1306.

[5] Blaabjerg,F, et al.: “Over view of control and grid synchronization for distributed power generation systemsâ€, IEEE Transcations on Industrail Electronics, Oct.2006, 53 (5), pp.1398-1409.

[6] Neha Agarwal,Alok Agarwal, “ Mismatch Losses in Solar Photovoltaic Array and Reduction Techniques,â€MITInternational Journal of Electrical And Instrumentation Engineering,vol.4,No.1,January 2014,pp,16-19 ISSN 2330-7656.

[7] J.Svensson, “Synchronization methods for grid-connected voltage source converters,â€Proc.Inst. Electr .Engg Gener.Transm. Distrib.,vol.148,no.3,pp.229-235,May 2001.

[8] S-J.Lee,H.Kim,S-K.Sul,andF.Blaabjerg, “ A novel control algorithm for static series compensators by use of PQR instantaneouspowertheory,â€IEEETrans.PowerElectron.,vol.19,np.3,pp.814-827, May2004.

[9] M.Karimi-Ghartemani and M.Iravani, “A method for synchronization of power electronic converters in polluted and variable-frequency environments,â€IEEE Trans. Power Systems.,vol.19,no.3,pp.1263-1270, Aug.2004.

[10] Hiren Patel and Vivek Agarwal “Maximum Power Point Tracking Scheme for PV System Operating Under Partially Shaded Conditionsâ€, IEEE Transcation on Industrial Electronics, vol. 55, no.4, April2008.

[11] Neha Agarwal,Dr.Anil K.Rai,Alok Agarwal, “Matlab/Simulink model of current based maximum power point tracker for solar photovoltaic systemâ€,MIT International Journal of Electrical and InstrumentationEngineering,vol.3,no2,August2013.

[12] A.Chouder,S.Silvestre.“Analysis model of mismatch power losses in pv systemsâ€,JournalofSolarEngineering,May2009,vol.132.

[13] J.H.R.Enslin,D.B.Snyman,Combined low-cost, “high-efficiency inverter,peak power tracker and regulator for PV applicationsâ€,IEEETrans.PowerElect.6.pp.73-82,1991.

[14] M.Ciobotaru,R.Teodorescu,and F.Blaabjerg, “Control of single stage singlephasePVinverter,â€inProc.PELIMCE,2005,CDROM.

[15] G. Kumaraswamy, P. Srinivasa Varma and P. Chandra Sekhar, “Grid Interconnected Multi Level Inverter based PV Systemâ€, Journal of Advanced Research in Dynamical and Control Systems, Vol. 9, Sp. 18, pp. 154-160, 2017.

[16] M. Yateesh Kumar and P. Srinivasa Varma, “A Comparative Study for Alleviation of Current Harmonics using PI/FUZZY Controller based PV-APF Systemâ€, Indian Journal of Science and Technology, Vol. 9, No.23, June 2016.

View Full Article: