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Control and Stability Analysis of More Electric Aircraft Power Systems

Cao, Bojian (2019) Control and Stability Analysis of More Electric Aircraft Power Systems. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Abstract

More Electric Aircraft (MEA) underline the utilization of electrical power to power the traditional aircraft systems. Through replacing the hydraulic, pneumatic, and petrol power with electrical power, MEA achieve numerous advantages over the traditional aircraft in system reliability, cost, energy efficiency, and pollution emission. More electrical loads and generation components of an MEA increase the system control complexity and meanwhile demand higher system performance in stability, reliability, and efficiency. This dissertation addresses specific areas of the analysis and control of MEA power systems. A fault-tolerant multi-phase permanent magnetic motor and drive system is proposed that utilizes the model predictive loss minimization direct torque control (DTC) and can deliver superior system response, efficiency, and fault tolerance comparing with traditional control strategy. At the same time, the majority of electrical motor & loads in MEA can be classified as CPLs. A CPL has the small-signal negative impedance, which may significantly degrade the stability margin of the power system. An analytical method is proposed to predict the system stability with CPLs under the change of operating points as well as design parameters. This work can be served as a reference guide for similar MEA power system design as well as can be interconnected with other system for a more powerful and flexible stability analysis tool.


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Details

Item Type: University of Pittsburgh ETD
Status: Unpublished
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Cao, Bojiancao.bojian@gmail.comboc19
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairMao, Zhi-Hong
Committee MemberDallal, Ahmed
Committee MemberGrainger, Brandon
Committee MemberReed, Gregory F
Committee MemberZou, Yu
Date: 19 June 2019
Date Type: Publication
Defense Date: 1 February 2019
Approval Date: 19 June 2019
Submission Date: 19 March 2019
Access Restriction: 3 year -- Restrict access to University of Pittsburgh for a period of 3 years.
Number of Pages: 106
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Electrical and Computer Engineering
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: More Electric Aircraft
Date Deposited: 19 Jun 2019 14:56
Last Modified: 19 Jun 2019 14:56
URI: http://d-scholarship.pitt.edu/id/eprint/36078

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