Abstract
A maximum power point tracking (MPPT) algorithm of wind turbines considering wind turbulence characteristics is presented in this paper. The turbulence characteristics of natural wind are analyzed, and the natural wind speed model is established. A MPPT algorithm based on extremum-seeking control (ESC) is proposed, which considers the turbulence characteristics containing in wind speed. The goal of the MPPT algorithm is to keep the wind turbines running at the maximum wind energy utilization coefficient point stably. The algorithm is modeled and analyzed, and the simulation results show that the MPPT algorithm is correct and effective.
Highlights
With the scarcity of fossil energy and the restrictions on carbon dioxide emission in worldwide, renewable energy has become the developing trend to mitigate the fossil energy issue
A maximum power point tracking (MPPT) algorithm of wind turbines considering wind turbulence characteristics is proposed, the goal of the MPPT algorithm is to keep the wind turbines running at the maximum wind energy utilization coefficient point stably
This paper focuses on the MPPT technology of variable speed wind turbines
Summary
With the scarcity of fossil energy and the restrictions on carbon dioxide emission in worldwide, renewable energy has become the developing trend to mitigate the fossil energy issue. The calculation results show that this method can improve the efficiency of wind energy utilization for small wind turbines. Chen et al [4,5,6] proposed the MPPT algorithm based on no-speed sensor vector control strategy, which uses the model reference adaptive system to accurately predict the rotation speed of wind rotor and uses BP neural network to achieve the wind turbine maximum power point. Hill-climbing algorithm has the advantage of simplicity and practicality etc This algorithm is prone to oscillate near the extreme points, which influences the stability of wind turbine operations. A MPPT algorithm of wind turbines considering wind turbulence characteristics is proposed, the goal of the MPPT algorithm is to keep the wind turbines running at the maximum wind energy utilization coefficient point stably.
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