Title :
A new methodology for the stability analysis of large-scale power electronics systems
Author :
Huynh, Phuong ; Cho, Bo H.
Author_Institution :
Philips Lab., Briarcliff Manor, NY, USA
fDate :
4/1/1998 12:00:00 AM
Abstract :
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 source-load model. Applicability of the methodology is verified through the stability analysis of a typical power electronics system
Keywords :
circuit stability; identification; power electronics; power system interconnection; power system stability; decoupling; feedback loop; interconnected source-load system; large-scale power electronics system; large-signal stability analysis; nonlinear subsystem; system identification; Feedback loop; Interconnected systems; Large-scale systems; Power electronics; Power system interconnection; Power system modeling; Power system stability; Stability analysis; Stability criteria; System identification;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
