PERFORMANCES COMPARISON FOR A PHOTOVOLTAIC SYSTEM BY USING THREE MAXIMUM POWER POINT TRACKING ALGORITHMS Print

 

PERFORMANCES COMPARISON FOR A PHOTOVOLTAIC SYSTEM BY USING THREE MAXIMUM POWER POINT TRACKING ALGORITHMS


Cristian Hoarcă1*, Ki-Yeol Shin2, Luminita Mirela Constantinescu3, Alexandru Bădiţă1, Laurenţiu Pătularu1


1National Research and Development Institute for Cryogenics and Isotopic Technologies – ICSI Rm. Valcea, Code 240050, Uzinei Street no. 4, P.O. Box Râureni 7, Valcea, Romania;

2School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro,  Gyeongsan, Gyeongbuk, 38541, Republic of Korea; 3University of Pitesti, Targu din Vale Street, no. 1, Code 110040, Pitesti, Arges, Romania


ABSTRACT

In this paper a comparison between three Maximum Power Point (MPP) tracking algorithms for the photovoltaic (PV) system based on: advanced Extremum Seeking (aES), modified Extremum Seeking (mES) controls, that improves the performances of the classical ES control schemes and Perturb and Observe algorithm (P&O) is proposed. The performances improvements are: higher search speed and accuracy of the MPP tracking process. So, different irradiance sequences are used to test the performances of the three proposed algorithms. Advanced Extremum Seeking control outperforms all algorithms in power efficiency.

Keywords: MPP tracking, Perturb and Observe algorithm (P&O).


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*Corresponding author: Cristian Hoarcă, E-mail: cristian.hoarca@icsi.ro, Phone: 0250/732 744, Fax: 0250/732 746