88f6157c-3b05-438a-8668-e986da678a6220210112121110579wseamdt@crossref.orgMDT DepositWSEAS TRANSACTIONS ON POWER SYSTEMS1790-506010.37394/232016http://wseas.org/wseas/cms.action?id=4057217202021720201510.37394/232016.2020.15http://wseas.org/wseas/cms.action?id=23192Study of the Importance of MPPT Algorithm for Photovoltaic Systems under Abrupt Change in Irradiance and Temperature ConditionsDeepthiPilakkatDept. of Electrical and Electronics Engineering, PSG College of Technology, Coimbatore, INDIAS.KanthalakshmiDept. of Electrical and Electronics Engineering, PSG College of Technology, Coimbatore, INDIAIn order to understand the importance of MPPT algorithms, modeling and simulation of a PV system with and without MPPT algorithm using MATLAB/SIMULINK under different irradiance and temperature variations are analyzed in this chapter. The MPPT technique used is Incremental Conductance (INC) algorithm. First of all, the P-V (power-voltage) and I-V (Current-Voltage) characteristics are noticed for different values of solar irradiance while keeping the cell temperature constant. Later on, for different temperature values with constant irradiance levels the characteristics of PV panel has been studied. The effect of temperature and irradiance on power, current, voltage and duty ratio of the PV system with and without INC MPPT algorithm is analyzed for understanding the importance of MPPT techniques in PV systems22720202272020820https://www.wseas.org/multimedia/journals/power/2020/a045103-860.pdf10.37394/232016.2020.15.2http://www.wseas.org/multimedia/journals/power/2020/a045103-860.pdf10.1016/j.solener.2018.12.008Pilakkat D. Kanthalakshmi S., An improved P&O algorithm integrated with artificial bee colony for photovoltaic systems under partial shading conditions. Solar Energy, VOL.178, 2019, pp.37–47.10.15662/ijareeie.2015.0402030Paranthagan B. Marimuthu M. and Karthiga M., Global Maximum Power Point Tracking Under Partial Shading Condition Using SEPIC Converter, International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, VOL. 4, NO. 2. 2015, pp.718–726.10.7251/els1822019pPilakkat D. and Kanthalakshmi S., Drift Free Variable Step Size Perturb and Observe MPPT Algorithm for Photovoltaic Systems Under Rapidly Increasing Insolation, Electronics Journal, VOL. 22, NO.1. 2018, pp.19–26.10.1049/ip-gtd:19951577Hussein K.H.Maximum photovoltaic power tracking: an algorithm for rapidly changing atmospheric conditions. IEE Proceedings - Generation, Transmission and Distribution, VOL.142, NO.1. 1995, pp.59.10.1109/icctct.2018.8551175Pilakkat D. and Kanthalakshmi S., Artificial Bee Colony Algorithm for Peak Power Point Tracking of a Photovoltaic System under Partial Shading Condition, 2018 International Conference on Current Trends towards Converging Technologies (ICCTCT), 2018, pp.1–7.10.1109/icpes.2016.7584089Yetayew T. T., Jyothsna, T. R. and Kusuma G., Evaluation of Incremental conductance and Firefly algorithm for PV MPPT application under partial shade condition, 2016 IEEE 6th International Conference on Power Systems, ICPS 2016, 2016, pp.1–6.