Fuzzy Logic Control of Modern Aircraft Electrical Power System during Transient and Steady-State Operating Conditions

In this paper, a modern civil Aircraft Electrical Power System (AEPS) is modeled, analyzed and controlled using Fuzzy Logic Control (FLC) technique. The FLC control provides a certain behavior for the AEPS during load switching to meet the military standards of the aircraft. FLC control technique used for Generator Control Unit (GCU), AC-DC Controlled rectifier, AC-AC inverter and DC-DC Converter. With this control, the voltage at the main buses (variable frequency bus - 270VDC bus - 28VDC bus-constant frequency bus) lies within standard limits at transient and steady state conditions. At the other hand, the generator frequency lies within standard limits for all the frequency operating range of 400-800Hz. The AEPS is tested using a simulation model in PSIM and the obtained results verify that the FLC is an efficient control technique for the variable frequency aircraft systems.