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research-article

Magnus Wind Turbine Emulator with MPPT by Cylinder Rotation Control

[+] Author and Article Information
Leonardo C. Corrêa

Education, Science, and Technology Federal Institute of Rio Grande do Sul, Av. São Vicente, 785, Bairro Cinquentenário, CEP 95180-000 – Farroupilha, RS, Brazil
leonardo.ee@gmail.com

João M. Lenz

Federal University of Santa Maria, Programa de Pós-Graduação em Engenharia Elétrica, Av. Roraima n 1000 – Campus Universitário – Bairro Camobi, Centro de Tecnologia (CT), Pavilhão de Laboratórios − Prédio 10 – Sala 524, CEP 97105-900 − Santa Maria, RS, Brazil
joaomlenz@gmail.com

Claudia G. Ribeiro

Sul-Rio-Grandense Education, Science, and Technology Federal Institute, Av. Paul Harris, 410 – Centro, CEP 97574-360 – Santana do Livramento, RS, Brazil
claudiagarrastazu@gmail.com

Felix A. Farret

Federal University of Santa Maria, Programa de Pós-Graduação em Engenharia Elétrica, Av. Roraima n 1000 – Campus Universitário – Bairro Camobi, Centro de Tecnologia (CT), Pavilhão de Laboratórios − Prédio 10 – Sala 524, CEP 97105-900 − Santa Maria, RS, Brazil
fafarret@gmail.com

1Corresponding author.

ASME doi:10.1115/1.4040212 History: Received April 19, 2017; Revised May 02, 2018

Abstract

An emulator for a non-conventional wind machine, named Magnus turbine, was designed and developed in this study. A brief discussion is made o/f this special case of horizontal axis wind generator and of the main physics elements involving the Magnus phenomenon. A mathematical model was used to emulate the static behavior of the Magnus wind turbine and a detailed analysis is presented about the peculiar rotating cylinder characteristics. Based on the relationship of cylinder blade rotation and power coefficient, a hill climb search algorithm was developed to perform maximum power point tracking (MPPT). The impact of the cylinder's rotation speed on the turbine net output power was evaluated. A controlled DC motor was used to provide torque and the PMSG drive, while the latter was controlled by a buck converter in order to extract the maximum generated power. Simulations of Magnus WT model and its MPPT control are presented. A prototype of the proposed emulator was developed and operated by a user-friendly LabVIEW interface. Measurements of the power delivered to the load were acquired for different wind speeds; these results were analyzed and compared with simulated values. The proposed control technique for maximizing the output power was validated by emulated results. The modeling and development of the Magnus turbine emulator also serve to encourage further studies on generation and control with this wind machine.

Copyright (c) 2018 by ASME
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