Paper Title:

Offshore and Onshore Wind Energy Conversion: The Potential of a Novel Multiple-Generator Drivetrain

Periodical Key Engineering Materials (Volumes 569 - 570)
Main Theme Damage Assessment of Structures X
Chapter Chapter 4: Renewable Energy
Edited by Biswajit Basu
Pages 644-651
DOI 10.4028/www.scientific.net/KEM.569-570.644
Citation Navid Goudarzi et al., 2013, Key Engineering Materials, 569-570, 644
Online since July 2013
Authors Navid Goudarzi, Wei Dong Zhu
Keywords Electromagnetic Clutch, Multiple-Generator Drivetrain, Offshore Wind Turbine, Onshore Wind Turbine, Variable Electromotive-Force Generator
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A multiple generator drivetrain (MGD), where a single large generator in a wind turbine is replaced by multiple generators with the same or different rated powers, is proposed along with an automatic switch as an alternative to an existing MGD configuration. Qualitative and quantitative comparisons of a MGD with a conventional drivetrain are provided to better understand the advantages and disadvantages of having a MGD in wind turbines. New approaches for improving the efficiency and the reliability, expanding the operational range, and reducing the cost of a wind turbine are mentioned. A simple mathematical model for a MGD with electromagnetic clutches is developed, a novel prototype of a MGD is designed and fabricated, and experiments are conducted on the prototype. It is concluded that a multiple-generator drivetrain with generators operating individually or in parallel has a better potential of improving the efficiency and the reliability, expanding the operational range, and reducing the cost of offshore and onshore wind turbines than the existing MGD configuration.