Modeling and impedance analysis of a single DC bus-based multiple-source multiple-load electrical power system

Gao, Fei; Bozhko, Serhiy

Abstract

The impedance based stability assessment method has been widely used to assess the stability of interconnected systems in different application areas. This paper deals with the source/load impedance analysis of the droop-controlled multiple sources multiple loads system which is a promising candidate in the future more-electric aircraft (MEA). This paper develops a mathematical model of the PMSG-based variable frequency generation system, derives the output impedance of the source subsystem including converter dynamics and shows the effect of parameters variation on source impedance and load impedance. A dynamic droop controller is proposed to provide the active damping to the system. In addition, the impedance analysis is extended to a generalized single bus-based multiple sources multiple loads system in which power losses are also investigated. The aforementioned analytical result is confirmed by experimental results.

• Journal Article Type: Article
• Acceptance Date: Jul 11, 2016
• Online Publication Date: Jul 18, 2016
• Publication Date: Sep 30, 2016
• Deposit Date: Jul 14, 2017
• Publicly Available Date: Jul 14, 2017
• Journal: IEEE Transactions on Transportation Electrification
• Electronic ISSN: 2332-7782
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 2
• Issue: 3
• Pages: 335-346
• DOI: https://doi.org/10.1109/TTE.2016.2592680
• Keywords: Impedance, Droop control, Constant power load, Stability, More electric aircraft, DC power distribution
• Public URL: https://nottingham-repository.worktribe.com/output/808473
• Publisher URL: http://ieeexplore.ieee.org/document/7515205/
• Additional Information: c2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works