Power Control of Direct Drive Wind Turbine with Simplified Conversion Stage & Transformerless Grid Interface

Author

Parker, M.A. ; Ng, C.H. ; Ran, L. ; Tavner, P. ; Spooner, E.

Author_Institution

Durham Univ.

Volume

1

fYear

2006

fDate

6-8 Sept. 2006

Firstpage

65

Lastpage

68

Abstract

The paper presents an analysis and simulation study of the power extraction capability of a direct drive wind turbine realised using a modular permanent magnet generator connected to the 11 kV grid via a cascaded multilevel voltage source inverter (CMVSI) without an interface transformer. The DC link in each of the CMVSI modules is supplied by a pair of generator coils connected through uncontrolled bridge rectifiers. The DC link voltage is determined by the required real and reactive power output to the grid, which constrains the available speed range of the turbine, limiting the power extraction at low wind speeds

Keywords

invertors; machine control; permanent magnet generators; power control; power grids; wind turbines; 11 kV; CMVSI; cascaded multilevel voltage source inverter; direct drive wind turbine; permanent magnet generator; power control; power extraction; transformerless grid interface; Analytical models; DC generators; Inverters; Magnetic analysis; Mesh generation; Permanent magnets; Power control; Power generation; Wind energy generation; Wind turbines;

fLanguage

English

Publisher

ieee

Conference_Titel

Universities Power Engineering Conference, 2006. UPEC '06. Proceedings of the 41st International

Conference_Location

Newcastle upon Tyne

Print_ISBN

978-186135-342-9

Type

conf

DOI

10.1109/UPEC.2006.367716

Filename

4218645