This paper shows the real-time simulation of a three-stage three-phase solid-state transformer with an Opal OP5607 platform. The simulation model considers the complete electronic full-order circuit for the topology without the use of simplifications, such as average models or equivalent circuits for the coupling transformer and the input and output converters, which may neglect part of the dynamics of interest for the converter design. The simulation is made through an electronic hardware solver (eHS), which can achieve smaller solving times than the regular algorithms, allowing to reach the switching frequency rate for this converters. The simulation model takes the RTE-library which is used for DC-DC converters, with simple arrangements in order to operate with the topology.