Tracking Control of Maximum Power Point for Windmill Power System by Identification of Output Characteristic

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  • 出力特性の同定情報に基づく風力発電システムの最大出力点探索制御
  • シュツリョク トクセイ ノ ドウテイ ジョウホウ ニ モトズク フウリョク ハ
  • Maximum power point tracking control for windmill power system by identification of output characteristic

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Abstract

In recent years, exploitation of natural energy by saving fossil energy is being reconsidered. One of the expected sources of natural energy for the future is wind energy, which has been actively studied as a substitute source of energy for the world. However, the wind energy is influenced by geographic and weather conditions, so that the generating power varies with time. Therefore, in order to make the windmill generator system to extract available maximum power from wind energy, this paper proposes a tracking control method of maximum power operating point using the recursively least square method with forgetting factor. The proposed method is simple since it identifies the system parameters and controls the actual rotor speed by means of a PI controller. The system parameters are identified by using the information for generating power and windmill speed. We verify the effectiveness of the proposed control method with numerical simulations and experiments.

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