Modeling and Analysis of a Dc Power Distribution System in 21st Century Airlifters

dc.contributor.authorLouganski, Konstantin P.en
dc.contributor.committeechairBoroyevich, Dushanen
dc.contributor.committeememberLindner, Douglas K.en
dc.contributor.committeememberLee, Fred C.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.description.abstractA DC power distribution system (PDS) of a transport aircraft was modeled and analyzed using MATLAB/Simulink software. The multi-level modeling concept was used as a modeling approach, which assumes modeling subsystem of the PDS at three different levels of complexity. The subsystem models were implemented in Simulink and combined into the whole PDS model according to certain interconnection rules. Effective modeling of different scenarios of operation was achieved by mixing subsystem models of different levels in one PDS model. Linearized models were obtained from the nonlinear PDS model for stability analysis and control design. The PDS model was used to examine the system stability and the DC bus power quality under bidirectional power flow conditions. Small-signal analysis techniques were employed to study stability issues resulting from subsystem interactions. The DC bus stability diagram was proposed for predicting stability of the PDS with different types of loads without performing an actual stability test based on regular stability analysis tools. Certain PDS configurations and operational scenarios leading to instability were identified. An analysis of energy transfer in the PDS showed that a large energy storage capacitor in the input filter of a flight control actuator is effective for reduction of the DC bus voltage disturbances produced by regenerative action of the actuator. However, energy storage capacitors do not provide energy savings in the PDS and do not increase its overall efficiency.en
dc.description.degreeMaster of Scienceen
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.subjectsmall-signal analysisen
dc.subjectpower converteren
dc.subjectconstant power loaden
dc.subjectpower distribution systemen
dc.subjectmulti-level modelingen
dc.subjectthree-phase systemen
dc.subjectregenerative energyen
dc.titleModeling and Analysis of a Dc Power Distribution System in 21st Century Airliftersen
dc.typeThesisen and Computer Engineeringen Polytechnic Institute and State Universityen of Scienceen


Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
1.53 MB
Adobe Portable Document Format