ABSTRACT
This chapter focuses on the modeling and control issues related to the design of the emerging solid-state transformers (SST) for the integration of renewable energy sources to the distribution grid. The state-of-the-art topologies of SSTs and their applications in integrating renewable energy sources are covered. The emerging solid-state switching devices and power converter topologies suitable for SST operation are discussed in terms of their power ratings and associated thermal loss scenarios. The design and characterization techniques of the advanced magnetic-material-based high-frequency magnetic link (HFML) are included to better understand the hysteresis characteristics and loss distribution of HFML at high frequencies. The linearized small-signal average value modeling method of SSTs is added to represent the underlying philosophy regarding controlling parameters and stability analysis. The multistage control structure and dynamic decoupling techniques for SST are discussed for the robust and stable operation of the transformer under grid disturbances.
