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Detailed switching models of power electronics devices often lead to long computing times, limiting the size of the system to be simulated. This drawback is especially important when the goal is to implement the model in a real-time simulation platform. An alternative is to use dynamic average models (DAM) for analyzing the dynamic behavior of power electronic devices. This paper presents the development of a DAM for a bidirectional solid-state transformer and its implementation in a real-time simulation platform. Several case studies have been carried out in order to evaluate the behavior of the model under different operating conditions, check its feasibility for power quality improvements and explore the implementation in a real-time simulation platform. [ABSTRACT FROM AUTHOR]

Highlights: [•] Development of a time-domain model for a high-frequency solid state transformer. [•] Control strategy for bidirectional power flow control. [•] A voltage oriented control (VOC) scheme is used for the high-voltage side stage used to ensure constant dc bus voltage, unity power factor condition at the input terminal in an average sense, and no ripple in the input active power. [•] Several test cases are presented to illustrate the features of the proposed device. [ABSTRACT FROM AUTHOR]