Alternate Arm Multilevel Converter - Kale, Yashoda Amit;Rathod, Sandip S.;Shingade, Ganesh D.
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It is a hybrid System between the modular multilevel converter, because of the presence of H-bridge cells, and the two-level converter, in the form of director switches in each arm. This converter is able to generate a multilevel ac voltage and since its stacks of cells consist of H-bridge cells instead of half-bridge cells, they are able to generate higher ac voltage than the dc terminal voltage. This allows the AAC to operate at an optimal point, called the "sweet spot," where the ac and dc energy flows equal. The director switches in the AAC are responsible for alternating the conduction…mehr

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Produktbeschreibung
It is a hybrid System between the modular multilevel converter, because of the presence of H-bridge cells, and the two-level converter, in the form of director switches in each arm. This converter is able to generate a multilevel ac voltage and since its stacks of cells consist of H-bridge cells instead of half-bridge cells, they are able to generate higher ac voltage than the dc terminal voltage. This allows the AAC to operate at an optimal point, called the "sweet spot," where the ac and dc energy flows equal. The director switches in the AAC are responsible for alternating the conduction period of each arm, leading to a significant reduction in the number of cells in the stacks. Furthermore, the AAC can keep control of the current in the phase reactor even in case of a dc-side fault and support the ac grid, through a STATCOM mode. A reduction in the cell voltage deviation is observed at power factors close to unity at the cost of an increase in power losses, especially when reactive power is required. This gain in voltage margin is then used in further optimizations of the MMC performance.
Autorenporträt
Prof. Yashoda Amit Kale received B.E(EEP) from P.E.S College of Engineering Aurangabad in 2013 and M.E(EPS) From MSS's College of Engineering Jalna in 2016. Currently She is working as a Asst Professor at SYCET Aurangabad(M.S) Her Research Interest area Modular Multilevel Converter,Renewable Energy.