Proposal for Improving Power Quality in Brazilian Navy Ships through the Application of Shunt Active Power Filters (SAPF)...

This article presents the results of a simulation of the electrical system of the "Corveta Classe Barroso" or CCB, a ship in the Brazilian Navy, using the MATLAB program. The objective of the simulation is to measure, evaluate, and mitigate the harmonics at the output terminals of the ship's generator group, driven by the non-linear loads connected to the Point of Common Coupling (PCC) of the distribution system, such as three-phase Static Rectifiers, Specific Loads, and a WaterCooling Unit. The simulation was divided into two stages, with the first stage simulating the system without the presence of the Shunt Active Power Filter (SAPF) and the second stage including the SAPF. The design of the SAPF was based on the IRP p-q theory, and it was found that the SAPF was effective in reducing current and voltage distortions, improving the true power factor, reducing harmonic pollution, and reducing voltage modulation. The results obtained during the second stage of the simulation that considered the presence of the SAPF indicated that the aforementioned filter was an adequate choice for improving the power quality of the ship under study. [ABSTRACT FROM AUTHOR]