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Different approaches to reduce shaft voltage in AC generators

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Authors
zare, F.
Abadi, J.
Ghosh, Arindam
Date
2009
Type
Conference Paper

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Citation
zare, F. and Abadi, J. and Ghosh, A. 2009. Different approaches to reduce shaft voltage in AC generators, in - (ed), 2009 13th European Conference on Power Electronics and Applications, EPE '09, Sep 8 2009. Barcelona, Spain: 2009 13th European Conference on Power Electronics and Applications (EPE 2009).
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2009 13th European Conference on Power Electronics and Applications (EPE 2009)
Source Conference
2009 13th European Conference on Power Electronics and Applications, EPE '09
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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.