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1. STABILITY ASSESSMENT EXTENSIONS FOR SINGLE-PHASE DISTRIBUTION
SOLID-STATE TRANSFORMERS
ABSTRACT
In this letter, a stability assessment for single-phase solid-state transformers (SSTs) is
extended to include the impact of distribution system voltages and a system-wide impedance
analysis. It is shown that if the SST filters throughout the system are designed with regards to the
proposed stability criterion, then system stability is guaranteed regardless of configuration. This
leads to two resulting applications: 1) the order in which the SSTs are connected to the system
will not generate instability if the criterion is satisfied and 2) a system configuration change due
to a fault will not produce instability.