IC MPPT Technique The incremental conductance method is developed under the fact of slope of the PV array power curve is zero at the MPP IC MPPT Algorithm.

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Presentation transcript:

IC MPPT Technique The incremental conductance method is developed under the fact of slope of the PV array power curve is zero at the MPP IC MPPT Algorithm

Block Diagram of the Proposed PV System

SIMULATION SYSTEM

Under mask the system

Simulation under constant solar irradiance The maximum standard operating for constant solar irradiance is assumed to be 1000 W/m 2 in the study. (A) The measured output of PV Module (B) The respond of IC MPPT tracking algorithm

Under 1000 W/m 2 of solar irradiance, The duty cycle for boost converter is a constant value 0.45 and the booster convert around 92kW of power with constant ouput voltage 500 V to the PV inverter. Output from boost converter

The PV module provides 100kW and the boost converter convert 92kW of energy Comparison of the measured output of PV module with output of boost converter

Simulation under decreasing solar irradiance (A) Decreasing of solar irradiance (B) Duty cycle of boost converter The figure shows the decreasing solar irradiance (1000 W/m W/m W/m 2 ).

(A) The measured output of PV Module (B) The respond of IC MPPT tracking algorithm

The figure shows the power, voltage, current of boost converter. Under (1000 W/m W/m W/m 2 ) of solar irradiance, the booster convert around 92kW - 80 kW - 25 kW of power. The booster maintains the output of voltage to be 500 V to the PV inverter. Output from boost converter

The PV module provides 100kW ( 1000 W/m 2 ) 80kW ( 800W/m 2 ) 25kW ( 250 W/m 2 ) and the boost converter convert 92kW, 74kW, 20 kW Comparison of the measured output of PV module with output of boost converter

Simulation under different solar irradiance Figure B shows the duty cycle of boost converter responding to different solar irradiance. In fact, an extreme variation of solar irradiance occur rarely. The figure A shows the variations of solar irradiance (600 W/m W/m W/m W/m 2 )

(A) The measured output of PV Module (B) The respond of IC MPPT tracking algorithm

The figure shows the measurement output from boost converter. The figure shows the power, voltage, current of boost converter. Under (600 W/m W/m W/m W/m 2 ) of solar irradiance, the booster maintains output voltage to be 500 V constantly. Output from boost converter

The power efficiency is approximately 90%. The simulation result shows the MPPT works and respond fast and well even in any behavior of solar irradiance and also gain a high efficiency Comparison of the measured output of PV module with output of boost converter

PV module connected to grid The simulation is under 1000 W/m 2 of solar irradiance. Output voltage of PV Inverter Output voltage of load

The figure shows the voltage after connected to the grid. to phase A-B in 25 kV voltage level. Output voltage of grid

Conclusion In this paper, different solar radiations is used to investigate the performance of IC MPPT. Simulation results show the IC MPPT technique in the PV system achieves the tracking of maximum power point with acceptable system performance and fast response. For the future, the IC technique will be a reliable MPPT to apply in the real power system because of the intermittent of solar irradiance

References Kun, D., Bian, X.G., Liu, H.H.,and Tao, P.,“A MATLAB-Simulink-Based PV Module Model and Its Application Under Conditions of Nonuniform Irradiance,” IEEE Trans. Energy Convers., vol. 27, no. 4, Dec M.H. Rashid, Power Electronic Handbook. California: Academic Press, T. Esram and P. L. Chapman, ―Comparison of photovoltaic array maximum power point tracking techniques,” IEEE Trans. Energy Convers.,vol. 22, no. 2, pp. 439–449, Jun J. H. Lee, H. S. Bae, and B. H. Cho, "Advanced Incremental Conductance MPPT Algorithm with a Variable Step Size," 2006 Hairul Nissah Zainudin, Saad Mekhilef, “Comparison Study of Maximum Power Point Tracker Techniques for PV Systems”, Cairo University, Egypt, December 19-21, 2010, Paper ID 278. M. E. Ropp and S. Gonzalez, “Development of a MATLAB/Simulink model of a single-phase grid-connected photovoltaic system,” IEEE Trans. Energy Convers., vol. 24, no. 1, pp. 195–202, Mar B. Verhoeven et al.. (1998) Utility Aspects of Grid Connected Photovoltaic Power Systems. International Energy Agency Photovoltaic Power Systems, IEA PVPS T5-01: [Online]. Available: Matlab and Simulink, The Mathworks, Inc. SimPowerSystems for Use with Simulink, User’s Guide, The MathWorks Inc., Y.-T. Hsiao and C.-H. Chen, "Maximum power tracking for photovoltaic power system," in Conf. Record of the 37th IAS Annual Meeting Ind. Applicat. Conf., 2002, pp K. H. Hussein and I. Mota, "Maximum photovoltaic power tracking: an algorithm for rapidly changing atmospheric conditions," in IEE Proc. Generation, Transmission, and Distribution, 1995, pp S.Mekhilef, "Performance of grid connected inverter with maximumpower point tracker and power factor control,"International Journal of Power Electronics, vol. 1, pp , N. D. Kaushika and N. K. Gautam, “Energy yield simulations of interconnected solar PV arrays,” IEEE Trans. Energy Convers., vol. 18, no. 1, pp. 127– 134, Mar Y. Jiang, J. A. A. Qahouq, and I. Batarseh, “Improved solar PV cell MATLAB simulation model and comparison,” in Proc. IEEE Int. Symp. Circuits Syst., May/Jun. 2010, pp. 2770–2773. M. A. Bhaskar, B. Vidya, R. Madhumitha, S. Priyadharcini, K. Jayanthi,band G. R. Malarkodi, “A simple PV array modeling using MATLAB,” in Proc. Int. Conf. Emerging Trends Electr. Computer Technol., 2011,pp. 122–126.