An Efficient Fuzzy-Logic Based Variable-Step Incremental Conductance MPPT Method for Grid-Connected PV Systems

被引:140
作者
Ali, Mahmoud N. [1 ]
Mahmoud, Karar [2 ,3 ]
Lehtonen, Matti [2 ]
Darwish, Mohamed M. F. [1 ,2 ]
机构
[1] Benha Univ, Fac Engn Shoubra, Dept Elect Engn, Cairo 11629, Egypt
[2] Aalto Univ, Sch Elect Engn, Dept Elect Engn & Automat, Espoo 02150, Finland
[3] Aswan Univ, Fac Engn, Dept Elect Engn, Aswan 81542, Egypt
关键词
Maximum power point trackers; Fuzzy logic; Mathematical model; Electrical engineering; Standards; Resistance; Licenses; Maximum power point tracking; fuzzy logic; incremental conductance; PV system; dynamic responses;
D O I
10.1109/ACCESS.2021.3058052
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Recently, solar energy has been intensively employed in power systems, especially using the photovoltaic (PV) generation units. In this regard, this paper proposes a novel design of a fuzzy logic based algorithm for varying the step size of the incremental conductance (INC) maximum power point tracking (MPPT) method for PV. In the proposed method, a variable voltage step size is estimated according to the degree of ascent or descent of the power-voltage relation. For this purpose, a novel unique treatment is proposed based on introducing five effective regions around the point of maximum PV power. To vary the step size of the duty cycle, a fuzzy logic system is developed according to the locations of the fuzzy inputs regarding the five regions. The developed fuzzy inputs are inspired from the slope of the power-voltage relation, namely the current-voltage ratio and its derivatives whereas appropriate membership functions and fuzzy rules are designed. The benefit of the proposed method is that the MPPT efficiency is improved for varying the step size of the incremental conductance method, thanks to the effective coordination between the proposed fuzzy logic based algorithm and the INC method. The output DC power of the PV array and the tracking speed are presented as indices for illustrating the improvement achieved in MPPT. The proposed method is verified and tested through the simulation of a grid-connected PV system model. The simulation results reveal a valuable improvement in static and dynamic responses over that of the traditional INC method with the variation of the environmental conditions. Further, it enhances the output dc power and reduce the convergence time to reach the steady state condition with intermittent environmental conditions.
引用
收藏
页码:26420 / 26430
页数:11
相关论文
共 43 条
[1]  
Ali M. N., 2014, INT J SCI RES ENG TE, V3, P946
[2]  
Ali MN, 2018, PROC INT MID EAST P, P97, DOI 10.1109/MEPCON.2018.8635202
[3]  
[Anonymous], 2007, PRINCIPLES SOFT COMP, DOI DOI 10.1007/978-3-540-35781-0
[4]  
[Anonymous], 2012, OPTIMIZATION PHOTOVO, DOI DOI 10.1007/978-1-4471-2403-0_6
[5]  
Baba A. O., 2020, SUSTAIN FUTURES, V2
[6]   Maximum power point traking controller for PV systems using neural networks [J].
Bahgat, ABG ;
Helwa, NH ;
Ahmad, GE ;
El Shenawy, ET .
RENEWABLE ENERGY, 2005, 30 (08) :1257-1268
[7]   Different Conventional and Soft Computing MPPT Techniques for Solar PV Systems with High Step-Up Boost Converters: A Comprehensive Analysis [J].
Basha, C. H. Hussaian ;
Rani, C. .
ENERGIES, 2020, 13 (02)
[8]   Improved hybrid algorithms-based MPPT algorithm for PV system operating under severe weather conditions [J].
Bataineh, Khaled .
IET POWER ELECTRONICS, 2019, 12 (04) :703-711
[9]   Assessment of an Improved Three-Diode against Modified Two-Diode Patterns of MCS Solar Cells Associated with Soft Parameter Estimation Paradigms [J].
Bayoumi, Ahmed S. ;
El-Sehiemy, Ragab A. ;
Mahmoud, Karar ;
Lehtonen, Matti ;
Darwish, Mohamed M. F. .
APPLIED SCIENCES-BASEL, 2021, 11 (03) :1-20
[10]   Comparison of perturb & observe and fuzzy logic in maximum power point tracker for PV systems [J].
Bounechba, H. ;
Bouzid, A. ;
Nabti, K. ;
Benalla, H. .
TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY (TMREES14 - EUMISD), 2014, 50 :677-684