An Adaptive, Multi-Rate Linear Quadratic Regulator for a Shipboard MVDC Distribution System with Constant Power Loads
Naval Postgraduate School Monterey United States
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Future U.S. Navy warships will have DC electrical distribution systems. These distribution system swill include multiple layers of electronic power converters. When coupled to high-bandwidth controllers, power converters behave as constant power loads to the distribution system. Constant power loads have a negative non-linear impedance characteristic that threatens system stability. Many different single-input control schemes have been applied to DC microgrids with constant power loads. In this work we propose a centralized select-matrix, multi-rate linear quadratic regulator LQRSM-based control scheme to provide a flexible and adaptable controller for high-order, multi-input, and multi-rate distribution systems.
- Electric Power Production and Distribution