Low power wind energy conversion system based on variable speed permanent magnet synchronous generators

O. Carranza, G. Garcerá, E. Figueres, L. G. González

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper presents a low power wind energy conversion system (WECS) based on a permanent magnet synchronous generator and a high power factor (PF) rectifier. To achieve a high PF at the generator side, a power processing scheme based on a diode rectifier and a boost DC-DC converter working in discontinuous conduction mode is proposed. The proposed generator control structure is based on three cascaded control loops that regulate the generator current, the turbine speed and the amount of power that is extracted from the wind, respectively, following the turbine aerodynamics and the actual wind speed. The analysis and design of both the current and the speed loops have been carried out taking into consideration the electrical and mechanical characteristics of the WECS, as well as the turbine aerodynamics. The power loop is not a linear one, but a maximum power point tracking algorithm, based on the Perturb and Observe technique, from which is obtained the reference signal for the speed loop. Finally, to avoid the need of mechanical sensors, a linear Kalman Filter has been chosen to estimate the generator speed. Simulation and experimental results on a 2-kW prototype are shown to validate the concept. Copyright © 2013 John Wiley & Sons, Ltd. Copyright © 2013 John Wiley & Sons, Ltd.
Original languageAmerican English
Pages (from-to)811-827
Number of pages728
JournalWind Energy
DOIs
StatePublished - 1 Jan 2014

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Synchronous generators
Energy conversion
Wind power
Permanent magnets
Turbines
Aerodynamics
DC-DC converters
Kalman filters
Diodes
Sensors
Processing

Cite this

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abstract = "This paper presents a low power wind energy conversion system (WECS) based on a permanent magnet synchronous generator and a high power factor (PF) rectifier. To achieve a high PF at the generator side, a power processing scheme based on a diode rectifier and a boost DC-DC converter working in discontinuous conduction mode is proposed. The proposed generator control structure is based on three cascaded control loops that regulate the generator current, the turbine speed and the amount of power that is extracted from the wind, respectively, following the turbine aerodynamics and the actual wind speed. The analysis and design of both the current and the speed loops have been carried out taking into consideration the electrical and mechanical characteristics of the WECS, as well as the turbine aerodynamics. The power loop is not a linear one, but a maximum power point tracking algorithm, based on the Perturb and Observe technique, from which is obtained the reference signal for the speed loop. Finally, to avoid the need of mechanical sensors, a linear Kalman Filter has been chosen to estimate the generator speed. Simulation and experimental results on a 2-kW prototype are shown to validate the concept. Copyright {\circledC} 2013 John Wiley & Sons, Ltd. Copyright {\circledC} 2013 John Wiley & Sons, Ltd.",
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Low power wind energy conversion system based on variable speed permanent magnet synchronous generators. / Carranza, O.; Garcerá, G.; Figueres, E.; González, L. G.

In: Wind Energy, 01.01.2014, p. 811-827.

Research output: Contribution to journalArticle

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