Stability Analysis and Control Design for Hybrid AC-DC More-Electric Aircraft Power Systems

Li, Xiao (2013) Stability Analysis and Control Design for Hybrid AC-DC More-Electric Aircraft Power Systems. Master's Thesis, University of Pittsburgh. (Unpublished)

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Abstract

This thesis studies the stability of a more-electric aircraft (MEA) power system with hybrid converters and loads, and proposes a control design method using state feedback. The MEA is aimed to replace the conventional nonelectric power in aircraft with electric power in order to reduce the size and weight of the aircraft power system. This thesis considers a model of the MEA power system consisting of the following components: converters with uncontrolled diodes and controlled rectifiers, ideal constant power loads (CPL), and non-ideal CPL driven by electromechanical actuators. The system has narrow stability range under the conventional two-loop PI control. To improve control performance, a full-state feedback control method is developed that can significantly increase the stability margin of the MEA power system.

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Details

Item Type:	University of Pittsburgh ETD
Status:	Unpublished
Creators/Authors:	Creators Email Pitt Username ORCID Li, Xiao xil90@pitt.edu XIL90
ETD Committee:	Title Member Email Address Pitt Username ORCID Thesis Advisor Mao, Zhi-Hong zhm4@pitt.edu ZHM4 Committee Member Reed, Gregory gfr3@pitt.edu GFR3 Committee Member McDermott, Thomas tem42@pitt.edu TEM42
Date:	24 September 2013
Date Type:	Publication
Defense Date:	1 April 2013
Approval Date:	24 September 2013
Submission Date:	15 June 2013
Access Restriction:	No restriction; Release the ETD for access worldwide immediately.
Number of Pages:	56
Institution:	University of Pittsburgh
Schools and Programs:	Swanson School of Engineering > Electrical Engineering
Degree:	MS - Master of Science
Thesis Type:	Master's Thesis
Refereed:	Yes
Uncontrolled Keywords:	MEA, power system, stability, CPL, converter,full-state feedback controll
Date Deposited:	24 Sep 2013 19:57
Last Modified:	15 Nov 2016 14:13
URI:	http://d-scholarship.pitt.edu/id/eprint/19024

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