الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
A concept, the multi level voltage reinjection ac/dc conversion, is discussed in this thesis. Voltage source converter (VSC) configurations, based on voltage reinjection concepts are proposed. These converter configurations are thoroughly analyzed in their ac and dc system sides.
The fundamentals of the reinjection concept is discussed briefly, which lead to the derivation of the ideal reinjection waveform for complete harmonic cancellation and approximations for practical implementation.
The concept of Multi Level Voltage Reinjection Voltage Source Converter (ML VR VSC) is demonstrated through two types of configurations, based on standard 12-pulse series connected VSC modified with reinjection bridges and transformers. Firing control strategies and steady state waveform analysis are presented and verified by Mat lab 2009a simulations.