Multi-converter observability issues associated with shipboard MVDC power systems

摘要

In power electronics systems, such as the planned Naval Shipboard Medium Voltage Direct Current (MVDC) system, multiple converters are used in distribution and generation subsystems to provide different voltage levels and form. A measure of observability of such systems will allow one to quantify their operational performance. This paper attempts to account for observability of these multiconverter systems through the inclusion of other dynamics such as electromechnical behavior of generators and loads, providing a more comprehensive view of system performance. The example section will focus on a DAE model of a simplified MVDC system where the observability formulation is applied and results reflect the influence of these additional states on overall observability and system performance.