Comparison of direct-drive and geared generator concepts for wind turbines

Author

Polinder, Henk ; Van der Pijl, Frank F A ; De Vilder, Gert-Jan ; Tavner, Peter J.

Author_Institution

Delft Univ. of Technol.

Volume

21

Issue

3

fYear

2006

Firstpage

725

Lastpage

733

Abstract

The objective of this paper is to compare five different generator systems for wind turbines, namely the doubly-fed induction generator with three-stage gearbox (DFIG3G), the direct-drive synchronous generator with electrical excitation (DDSG), the direct-drive permanent-megnet generator (DDPMG), the permanent-magnet generator with single stage gearbox (PMG1G), and the doubly-fed induction generator with single-stage gearbox (DFIG1G). The comparison is based on cost and annual energy yield for a given wind climate. The DFIG3G is a cheap solution using standard components. The DFIG1G seems the most attractive in terms of energy yield divided by cost. The DDPMG has the highest energy yield, but although it is cheaper than the DDSG, it is more expensive than the generator systems with gearbox

Keywords

permanent magnet generators; synchronous generators; synchronous motor drives; wind turbines; direct-drive permanent magnet generator; direct-drive synchronous generators; doubly-fed induction generators; electrical excitation; geared generator concepts; single-stage gearbox; three-stage gearbox; wind turbines; Costs; Flexible manufacturing systems; Helium; Induction generators; Permanent magnet motors; Power electronics; Power generation; Synchronous generators; Wind energy generation; Wind turbines; Direct-drive; doubly fed induction generator (DFIG); permanent-magnet generator; single-stage gearbox; synchronous generator; wind turbine;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/TEC.2006.875476

Filename

1677663