A new structure based on cascaded multilevel converter for variable speed wind turbine

Author

Deng, Fujin ; Chen, Zhe

Author_Institution

Inst. of Energy Technol., Aalborg Univ., Aalborg, Denmark

fYear

2010

fDate

7-10 Nov. 2010

Firstpage

3167

Lastpage

3172

Abstract

An alternative structure for variable speed wind turbine, using multiple permanent magnet synchronous generators (PMSGs) drive-train configuration and cascaded multilevel converter is proposed in this paper. This study presents a power electronic solution for the wind turbine. A transformer-less cascaded multilevel converter interface based on PMSGs is developed to synthesize a desired high ac sinusoidal output voltage. The benefits of high power and high ac voltage make this structure possible to be applied in the wind power generation. In addition, the bulky transformer could be omitted. A simulation model of 10 MW variable speed wind turbine based on PMSGs developed in PSCAD/EMTDC is presented. The dynamic performance of grid-connected wind turbine is analyzed. Simulation results shows that the proposed structure may be attractive in wind power generation.

Keywords

permanent magnet generators; power convertors; power grids; synchronous generators; variable speed drives; wind power plants; wind turbines; AC sinusoidal output voltage; PMSG; PSCAD-EMTDC; cascaded multilevel converter; grid-connected wind turbine; multiple permanent magnet synchronous generators; power 10 kW; power electronic; simulation model; transformerless cascaded multilevel converter interface; variable speed wind turbine; wind power generation; Converters; Generators; Rotors; Torque; Wind speed; Wind turbines; Windings;

fLanguage

English

Publisher

ieee

Conference_Titel

IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society

Conference_Location

Glendale, AZ

ISSN

1553-572X

Print_ISBN

978-1-4244-5225-5

Electronic_ISBN

1553-572X

Type

conf

DOI

10.1109/IECON.2010.5674975

Filename

5674975