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Rectifier-inverter types of static frequency changers (SFC's) typically employ bulky dc link reactive components to establish the required dc bus voltage. The negative effects of these components on overall system performance and evolution have been the subject of many past research publications. It is demonstrated that these unwanted components can be eliminated through the use of suitable SFC power circuit topologies. Two such topologies (i.e.,SFC Structures 1 and 2) are investigated here. These converter structures employ state-of-the-art power semiconductor components and optimized rectifier-inverter switching schemes. Finally, theoretical and experimental results show that proposed converter structures offer significant performance improvements at the cost of only moderate power and logic circuit complexity.
Ziogas et al. (Sat,) studied this question.
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