MPPT of photovoltaic systems using extremum-seeking control

被引：207

作者：

Leyva, R

Alonso, C

Queinnec, I

Cid-Pastor, A

Lagrange, D

Martínez-Salamero, L

机构：

[1] Univ Rovira & Virgili, Dept Eng Elect Elect & Automat, Tarragona 43007, Spain

[2] LAAS, CNRS, Paris, France

来源：

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS | 2006年 / 42卷 / 01期

关键词：

D O I：

10.1109/TAES.2006.1603420

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

A stability analysis for a maximum power point tracking (MPPT) scheme based on extremum-seeking control is developed for a photovoltaic (PV) array supplying a dc-to-dc switching converter. The global stability of the extremum-seeking algorithm is demonstrated by means of Lyapunov's approach. Subsequently, the algorithm is applied to an MPPT system based on the '' perturb and observe '' method. The steady-state behavior of the PV system with MPPT control is characterized by a stable oscillation around the maximum power point. The tracking algorithm leads the array coordinates to the maximum power point by increasing or decreasing linearly with time the array voltage. Off-line measurements are not required by the control law, which is implemented by means of an analog multiplier, standard operational amplifiers, a flip-flop circuit and a pulsewidth modulator. The effectiveness of the proposed MPPT scheme is demonstrated experimentally under different operating conditions.

引用

页码：249 / 258

页数：10

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