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Publication Title: Solid-State Transformers for Distribution Systems–Part I: Technology and Construction
Authors: Saleh, S.A.
Richard, Chistian
St-Onge, Xavier Francisis
McDonald, Katie
Ozkop, Emre
Chang, Liuchen
Alsayid, Basim
Keywords: Distribution systems , solid-state transformers , dc-dc converters , ac-dc converters , dc-ac converters , and transformer grounding
Issue Date: 14-Jun-2019
Publisher: IEEE Transactions on Industry Applications
Abstract: Solid-state transformers (SSTs) are an emerging technology that has been developed to improve the stability, reliability, and economic operation of distribution systems. These new transformers are composed of a medium ac voltage (MV) stage, a dc stage, and a low ac voltage (LV) stage. Passive and active dc-links are used to construct the dc stage in SSTs in order offer new functionalities, including hybrid (ac and dc) distribution, reactive power compensation, voltage/frequency regulation, power quality improvement, and distributed generation utilization. On one hand, a distribution SST has its ac stage connected to a MV level, which mandates specific power electronic converter (PEC) topologies, switching element capabilities, and filtering circuits. On the other hand, the dc-link stage has to provide isolation between the MV and LV levels, which requires the employment of isolated dc PECs. Part I of this work provides a review of SST designs and constructions (for deployment in distribution systems), in terms of the required technology, supported functionalities, and construction features.
Appears in Collections:Engineering and Technology Faculty

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