Structural Design Optimization of Doubly-Fed Induction Generators Using GeneratorSE

Conference · Mon Nov 13 04:00:00 EST 2017

OSTI ID:1409305

Sethuraman, Latha ^[1]; Fingersh, Lee J ^[1]; Dykes, Katherine L ^[1]; Arthurs, Claire ^[2]

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1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
2. Georgia Institute of Technology

A wind turbine with a larger rotor swept area can generate more electricity, however, this increases costs disproportionately for manufacturing, transportation, and installation. This poster presents analytical models for optimizing doubly-fed induction generators (DFIGs), with the objective of reducing the costs and mass of wind turbine drivetrains. The structural design for the induction machine includes models for the casing, stator, rotor, and high-speed shaft developed within the DFIG module in the National Renewable Energy Laboratory's wind turbine sizing tool, GeneratorSE. The mechanical integrity of the machine is verified by examining stresses, structural deflections, and modal properties. The optimization results are then validated using finite element analysis (FEA). The results suggest that our analytical model correlates with the FEA in some areas, such as radial deflection, differing by less than 20 percent. But the analytical model requires further development for axial deflections, torsional deflections, and stress calculations.

• Research Organization: National Renewable Energy Laboratory (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind and Water Technologies Office (EE-4W)
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 1409305
• Report Number(s): NREL/PO-5000-70321
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY
24 POWER TRANSMISSION AND DISTRIBUTION
GeneratorSE
analysis
finite element modeling
induction generator
structural design