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In this paper, a 20 kVA Solid State Transformer (SST) based on 6.5 kV IGBT is proposed for interface with 7.2 kV distribution system voltage. The proposed SST consists of a cascaded multilevel AC/DC rectifier stage, a Dual Active Bridge (DAB) converter stage with high frequency transformers and a DC/AC inverter stage. Based on the single phase d-q vector control, a novel control strategy is proposed...
The solid state transformer (SST) is one of the key elements proposed in the National Science Foundation (NSF) Generation-III Engineering Research Center (ERC) ldquoFuture Renewable Electric Energy Delivery and Managementrdquo (FREEDM) Systems Center established in 2008. The SST is used to enable active management of distributed renewable energy resources, energy storage devices and loads. In this...
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