Title page for ETD etd-07112009-040311

Type of Document Master's Thesis
Author Wildrick, Carl M.
URN etd-07112009-040311
Title Stability of distributed power supply systems
Degree Master of Science
Department Electrical Engineering
Advisory Committee
Advisor Name Title
Cho, B. H. Committee Co-Chair
Lee, Fred C. Committee Co-Chair
Borojevic, B. Committee Member
  • Power resources
Date of Defense 1993-02-02
Availability unrestricted

A comprehensive stability analysis of a distributed power system (DPS) is performed. The possible performance degradation and stability problems caused by the loading effect of cascaded converters are analyzed. The effect of impedance overlap on the system and individual subsystems is examined.

By applying the loop gain analysis technique, a forbidden region for the polar plot of the ratio of impedances at the interface between cascaded subsystems is determined. A method of transforming the forbidden region into a load impedance specification for a given source impedance is developed. The method guarantees system stability and minimal performance degradation of the DPS, while allowing impedance overlap at the interface.

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