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Active AC snubber for direct AC/AC power converters

Authors: Anish Prasai; Deepak Divan;

Active AC snubber for direct AC/AC power converters

Abstract

While direct AC/AC converters like matrix converters have been around for a while, their applications are generally limited to low voltages due to complexity and issues in scaling to high voltages, including inadequate fault tolerance, complex switching patterns where errors can lead to device failures, and complex gate drive requirements for voltage sharing among the devices. For these reasons, voltage source inverters (VSI)-based topologies remain the de facto standard in medium to high voltage power conversion applications. This paper will propose an actively-controlled AC snubber concept that addresses the scalability issues with direct AC and AC/AC converters. The paper will use the previously proposed single-phase direct AC topology known as the dynamic capacitor (D-CAP) to demonstrate the operation of the AC snubber. However, the proposed snubber concept is equally valid for any topologies employing series-connected devices to scale up to higher voltages.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
6
Average
Top 10%
Average
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