Adaptive Least Mean Square Controller for Power Quality Enhancement in Solar Photovoltaic System

被引:3
|
作者
Karchi, Nalini [1 ,2 ]
Kulkarni, Deepak [1 ]
Perez de Prado, Rocio [3 ]
Divakarachari, Parameshachari Bidare [4 ]
Patil, Sujata N. [5 ]
Desai, Veena [6 ]
机构
[1] Gogte Inst Technol, Dept Elect & Elect Engn, Belagavi 590006, India
[2] KLE Dr MS Sheshgiri Coll Engn & Technol, Dept Elect & Elect Engn, Belagavi 590008, India
[3] Univ Jaen, Telecommun Engn Dept, Jaen 23700, Spain
[4] Nitte Meenakshi Inst Technol, Dept Elect & Commun Engn, Bangalore 560064, India
[5] KLE Dr MS Sheshgiri Coll Engn & Technol, Dept Elect & Commun Engn, Belagavi 590008, India
[6] Gogte Inst Technol, Dept Elect & Commun Engn, Belagavi 590006, India
关键词
adaptive control algorithm; inverter controller; least mean square; maximum power point tracking; photovoltaic system; power quality issues; ALGORITHM;
D O I
10.3390/en15238909
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The objective of the proposed work is to develop a Maximum Power Point Tracking (MPPT) controller and inverter controller by applying the adaptive least mean square (LMS) algorithm to control the total harmonics distortion of a solar photovoltaic system. The advantage of the adaptive LMS algorithm is given by its simplicity and reduced required computational time. The adaptive LMS algorithm is applied to modify the Perturb and Observe (P&O), MPPT controller. In this controller, the adaptive LMS algorithm is used to predict solar photovoltaic power. The adaptive LMS maximum power point tracking controller gives better optimal solutions with less steady error 0.7% (6 watts) and 0% peak overshot in power with the tradeoff being more settling time at 0.33 s. The development of the inverter control law is performed using the d-q frame theory. This helps to reduce the number of equations to build a control law. The load current, grid current and grid voltage are sensed and transformed into d and q components. This adaptive LMS control law is used to extract the reference grid currents and, later, to compare them with the actual grid currents. The result of this comparison is used to generate the switching gate pulses for the inverter switches. The proposed controllers are developed and implemented with a solar PV system in MATLAB Simulink. The total harmonics distortion in grid and load current (3.25% and 7%) and voltage (0%) is investigated under linear and non-linear load conditions with changes in solar irradiations. The analysis is performed by selecting step incremental values and sampling time.
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页数:19
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