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RSS FeedsEnergies, Vol. 11, Pages 3090: Efficiency Optimization of a Variable Bus Voltage DC Microgrid (Energies)

 
 

10 november 2018 15:01:58

 
Energies, Vol. 11, Pages 3090: Efficiency Optimization of a Variable Bus Voltage DC Microgrid (Energies)
 




A variable bus voltage DC microgrid (MG) is simulated in Simulink for optimization purposes. It is initially controlled with a Voltage Event Control (VEC) algorithm supplemented with a State of Charge Event Control (SOCEC) algorithm. This control determines the power generated/consumed by each element of the MG based on bus voltage and battery State of Charge (SOC) values. Two supplementary strategies are proposed and evaluated to improve the DC-DC converters` efficiency. First, bus voltage optimization control: a centralized Energy Management System (EMS) manages the battery power in order to make the bus voltage follow the optimal voltage reference. Second, online optimization of switching frequency: local drivers operate each converter at its optimal switching frequency. The two proposed optimization strategies have been verified in the simulations.


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12 viewsCategory: Biophysics, Biotechnology, Physics
 
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