Abstract
Abstract Medium Voltage Direct Current (MVDC) power system will revolutionize the future of the marine all-electric ships (AES). However, with the presence of the constant power load (CPL), which behaves as incremental negative resistance, and the presence of heavy pulsed loads (HPL), that consume a massive amount of pulsed power, the voltage stability of the system arises as a critical problem. This problem needs to be addressed appropriately. This work presents a small signal model for a MVDC power system and design of a model predictive controller that maintains the voltage stability and ensures proper power sharing among the resources on the ship. Unlike previous works, the small signal model of the system is embedded inside the controller, which increases the flexibility of the controller to adapt to the different circumstances on the shipboard. The model and the controller are simulated through MATLAB/Simulink and validated using a processor in the loop. The results showed the ability of the controller to maintain the voltage of the MVDC under the different operational circumstances. Also, the controller was able to ensure the adequate operation of the resources and warrant proper power sharing.
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