A Solid State Transformer Model for Proper Integration to Distribution Networks


With the advancement in power electronic semiconductor switches such as silicon carbide and gallium nitride, it is possible to develop power electronics converters for high voltage, high power and high frequency applications. One such application is a power electronics based distribution solid-state transformer (SST). In this paper, a PSCAD based simulation model of the SST is proposed to have smooth integration to distribution network and smooth disconnection from distribution network. Smooth integration is required during start up and re-connection of the SST. Smooth disconnection of the SST is required during islanding of a part of distribution network. SST model must remain stable during both the processes. A distribution test system is used to evaluate the performance of the proposed SST model during start up and disconnection processes. Simulation results are provided to validate the proposed SST model.

Meeting Name

51st North American Power Symposium, NAPS 2019 (2019: Oct. 13-15, Wichita, KS)


Electrical and Computer Engineering

Research Center/Lab(s)

Center for Research in Energy and Environment (CREE)


The authors gratefully acknowledge the support of the National Science Foundation through award number EEC-08212121 under the Engineering Research Centers program. This work is part of the Future Renewable Electric Energy Delivery and Management (FREEDM) Center.

Keywords and Phrases

Electric Switches; Gallium Nitride; III-V Semiconductors; Power Electronics; Silicon Carbide, High Power; High Voltage; High-Frequency Applications; Power Electronics Converters; Simulation Model; Solid State Transformer (SST); Sst Models; Test Systems, Integration

International Standard Book Number (ISBN)


Document Type

Article - Conference proceedings

Document Version


File Type





© 2019 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Dec 2019