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Energies 2018, 11(9), 2458; https://doi.org/10.3390/en11092458

THD Reduction in Wind Energy System Using Type-4 Wind Turbine/PMSG Applying the Active Front-End Converter Parallel Operation

1
Institute for Energy and Environment, University of Strathclyde, Glasgow G1 1XW, UK
2
Facultad de Ingenieria Electrica, División de estudios de posgrado, Universidad Michoacana de San Nicolas de Hidalgo, Morelia 58030, Mexico
3
Facultad de Ingeniería; Departamento de Energía, Eléctrica Universidad Nacional Autónoma de México, Coyoacán, Ciudad de México 04510, Mexico
*
Author to whom correspondence should be addressed.
Received: 29 August 2018 / Revised: 11 September 2018 / Accepted: 15 September 2018 / Published: 16 September 2018
(This article belongs to the Special Issue Power Electronics in Renewable Energy Systems)
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Abstract

In this paper, the active front-end (AFE) converter topology for the total harmonic distortion (THD) reduction in a wind energy system (WES) is used. A higher THD results in serious pulsations in the wind turbine (WT) output power and several power losses at the WES. The AFE converter topology improves the capability, efficiency, and reliability in the energy conversion devices; by modifying a conventional back-to-back converter, from using a single voltage source converter (VSC) to use pVSC connected in parallel, the AFE converter is generated. The THD reduction is achieved by applying a different phase shift angle at the carrier of digital sinusoidal pulse width modulation (DSPWM) switching signals of each VSC. To verify the functionality of the proposed methodology, the WES simulation in Matlab-Simulink® (Matlab r2015b, Mathworks, Natick, MA, USA) is analyzed, and the experimental laboratory tests using the concept of rapid control prototyping (RCP) and the real-time simulator Opal-RT Technologies® (Montreal, QC, Canada) is achieved. The obtained results show a type-4 WT with a total output power of 6 MVA, generating a THD reduction up to 5.5 times of the total WES current output by Fourier series expansion. View Full-Text
Keywords: active front-end converter; back-to-back converter; permanent magnet synchronous generator (PMSG); THD; type-4 wind turbine; wind energy system; Opal-RT Technologies® active front-end converter; back-to-back converter; permanent magnet synchronous generator (PMSG); THD; type-4 wind turbine; wind energy system; Opal-RT Technologies®
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Salgado-Herrera, N.M.; Campos-Gaona, D.; Anaya-Lara, O.; Medina-Rios, A.; Tapia-Sánchez, R.; Rodríguez-Rodríguez, J.R. THD Reduction in Wind Energy System Using Type-4 Wind Turbine/PMSG Applying the Active Front-End Converter Parallel Operation. Energies 2018, 11, 2458.

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