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Energies 2016, 9(1), 59; doi:10.3390/en9010059

Low Voltage Ride-Through Capability Solutions for Permanent Magnet Synchronous Wind Generators

1
Department of Electrical Engineering, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais 31270-010, Brazil
2
Graduate Program in Electrical Engineering, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil
3
Department of Electrical Engineering, Federal University of Itajubá, Itabira, Minas Gerais 35903-087, Brazil
4
Department of Materials Engineering, Federal Center for Technological Education of Minas Gerais, Belo Horizonte, Minas Gerais 30421-169, Brazil
5
Department of Electrical Engineering, Federal University of Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
*
Author to whom correspondence should be addressed.
Academic Editor: Frede Blaabjerg
Received: 10 October 2015 / Revised: 14 December 2015 / Accepted: 30 December 2015 / Published: 20 January 2016
(This article belongs to the Special Issue Wind Turbine 2015)
View Full-Text   |   Download PDF [3958 KB, uploaded 20 January 2016]   |  

Abstract

Due to the increasing number of wind power plants, several countries have modified their grid codes to include specific requirements for the connection of this technology to the power system. One of the requirements is the ride-through fault capability (RTFC), i.e., the system capability to sustain operation during voltage sags. In this sense, the present paper intends to investigate the behavior of a full-converter wind generator with a permanent magnet synchronous machine during symmetrical and asymmetrical voltage sags. Two solutions to improve the low voltage ride-through capability (LVRT) of this technology are analyzed: discharging resistors (brake chopper) and resonant controllers (RCs). The design and limitations of these solutions and the others proposed in the literature are discussed. Experimental results in a 34 kW test bench, which represents a scaled prototype of a real 2 MW wind conversion system, are presented. View Full-Text
Keywords: permanent magnet synchronous generator (PMSG); low voltage ride-through capability (LVRT); voltage sags; wind conversion systems permanent magnet synchronous generator (PMSG); low voltage ride-through capability (LVRT); voltage sags; wind conversion systems
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Mendes, V.F.; Matos, F.F.; Liu, S.Y.; Cupertino, A.F.; Pereira, H.A.; De Sousa, C.V. Low Voltage Ride-Through Capability Solutions for Permanent Magnet Synchronous Wind Generators. Energies 2016, 9, 59.

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