Title page for ETD etd-10262005-101021

Type of Document Dissertation
Author Huynh, Phuong
URN etd-10262005-101021
Title Stability analysis of large-scale power electronics systems
Degree PhD
Department Electrical Engineering
Advisory Committee
Advisor Name Title
Cho, Bo H. Committee Chair
Ball, Joseph A. Committee Member
Lee, Fred C. Committee Member
Sable, Don M. Committee Member
VanLandingham, Hugh F. Committee Member
  • Power electronics
  • Electric power system stability
Date of Defense 1994-12-14
Availability restricted

A new methodology is proposed to investigate the large-signal stability of interconnected power electronics systems. The approach consists of decoupling the system into a source subsystem and a load subsystem, and stability of the entire system can be analyzed based on investigating the feedback loop formed by the interconnected source/load system. The proposed methodology requires two stages: (1) since the source and the load are unknown nonlinear subsystems, system identification, which consists of isolating each subsystem into a series combination of a linear part and a nonlinear part, must be performed, and (2) stability analysis of the interconnected system is conducted thereafter based on a developed stability criterion suitable for the nonlinear interconnected-block-structure model. Applicability of the methodology is verified through stability analysis of PWM converters and a typical power electronics system.

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