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In this paper a generalized control approach for modular multilevel converters is applied to a converter connecting a three-phase and a five-phase system directly without any central DC link. This new 3 × 5 modular multilevel matrix converter offers an alternative to other multilevel converters applied to five-phase machines, but foremost acts as example to prove the generality of the control. The...
In this paper, branch energy balancing as part of a generalised control concept for modular multilevel converter topologies is investigated. A way to derive an optimal branch energy balancing regarding current stress is introduced. Afterwards, this generalised approach is applied to the Modular Multilevel Converter as an example topology. The approach is tested via simulation and verified with a low-voltage...
This paper presents a generalised control that can be applied to a class of modular multilevel converter topologies. The approach splits up into current control based on the state-space representation and branch energy balancing. For the branch energy balancing, an optimisation process leading to minimal additional current stress is presented. After describing the control approach independently from...
This paper presents an alternative approach for analysing and controlling the Modular Multilevel Matrix Converter. After a system description, the proposed current control and branch energy balancing methods are introduced. As distinguished from previous approaches, the presented method is more general and easier applicable to other modular topologies. Its functionality is verified by simulation and...
Modular Multilevel Converters have a large number of advantages at high voltage and power levels. Due to their modular structure, they offer easy scalability, high quality output waveforms, and superior availability, to name a few. This paper aims at further increasing the availability of the Modular Multilevel Matrix Converter. A new method allows to operate the converter even in the case that a...
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