Wind-driven SEIG supplying DC microgrid through a single-stage power converter

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• 作者：Vellapatchi Nayanar ^{vnayanar27@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Natarajan Kumaresan ; ^{nkumar@nitt.edu" class="auth_mail" title="E-mail the corresponding author} ; Nanjappa Gounder Ammasai Gounden ^{amms@nitt.edu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：DC microgrid ; Digital signal controller (DSC) ; Induction generators ; Maximum power point tracking (MPPT) ; Semi-converter ; Wind energy conversion system (WECS)
• 刊名：Engineering Science and Technology,an International Journal
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：19
• 期：3
• 页码：1600-1607
• 全文大小：2504 K

文摘

Nowadays, there is an increased emphasis on utilizing the renewable energy sources and selection of suitable power converters for supplying dc microgrid. Among the various renewable energy sources, wind energy stands first in terms of installed capacity. So, an attempt is made in this paper for supplying dc microgrid utilizing wind energy. A self-excited induction generator has been used in the proposed wind energy conversion system (WECS). A single-stage power converter, namely, semi-converter is connected between the SEIG and dc grid terminals for closed-loop control of the proposed system. A perturb and observe (P&O) based maximum power point tracking (MPPT) algorithm has been developed and implemented using a dsPIC30F4011 digital controller. In this MPPT algorithm, the firing angle of the converter is adjusted by continuously monitoring the dc grid current for a given wind velocity. For analyzing the proposed system, a MATLAB/Simulink model has been developed by selecting the various components starting from wind-turbine model to the power converter supplying dc microgrid. Successful working of the proposed WECS has also been shown through experimental results obtained on a prototype model developed in the laboratory.