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Benefits of Operating Doubly Fed Induction Generators by Modular Multilevel Matrix Converters

Benefits of Operating Doubly Fed Induction Generators by Modular Multilevel Matrix Converters
Author:

Felix Kammerer, Mario Gommeringer, Johannes Kolb, Michael Braun

links:
Source:

PCIM Europe 2013, Nuremberg, Germany

Date: 14.-16.5.2013

The benefits of supplying the rotor circuit of a Doubly Fed Induction Generator (DFIG) by the
Modular Multilevel Matrix Converter (M3C) are presented. The M3C allows higher rotor voltages,
lower rotor currents and a higher redundancy compared to existing solutions. Filters
are dispensable due to the generated multilevel voltages. In case of a line voltage drop the
M3C arm voltages can be used to generate temporarily higher rotor voltages which may help
to control the rotor currents during faults.