Different approaches to reduce shaft voltage in AC generators

Author

Zare, Firuz ; Adabi, Jafar ; Ghosh, Arindam

Author_Institution

Queensland Univ. of Technol., Brisbane, QLD, Australia

fYear

2009

Firstpage

1

Lastpage

9

Abstract

This paper presents several shaft voltage reduction techniques for doubly-fed induction generators in wind turbine applications. These techniques includes: pulse width modulated voltage without zero vectors, multi-level inverters with proper PWM strategy, better generator design to minimize effective capacitive couplings in shaft voltage, active common-mode filter, reducing DC-link voltage and increasing modulation index. These methods have been verified with mathematical analysis and simulations.

Keywords

PWM invertors; PWM power convertors; asynchronous generators; power filters; wind turbines; AC generator; DC link voltage reduction; common mode filter; doubly fed induction generator; multi level inverter; pulse width modulated voltage; shaft voltage reduction; wind turbine; AC generators; Active filters; Induction generators; Mathematical analysis; Pulse generation; Pulse inverters; Pulse width modulation inverters; Shafts; Voltage; Wind turbines; Common mode; DFIG; Filter; Multi-level inverter; Shaft voltage; wind turbine;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications, 2009. EPE '09. 13th European Conference on

Conference_Location

Barcelona

Print_ISBN

978-1-4244-4432-8

Electronic_ISBN

978-90-75815-13-9

Type

conf

Filename

5278850