4-Leg Inverter Modeling for E2 Mitigation in Solid-State Transformers

Understanding the potential vulnerability of future grid components is critical to ensuring system resilience as distributed energy capabilities are introduced. This work investigated the response of a four-leg inverter stage of a solidstate transformer to the intermediate-time E2 conducted environment of a high-altitude electromagnetic pulse. Hamiltonian-based controls that were originally designed to reduce low frequency common-mode currents in the system were used to mitigate the E2 disturbance described by MIL-STD-188-125-1. Negligible impact was observed on the phase currents or voltages on the transistor elements or DC bus in response to the standard pulse.