Determining potentially unstable operating points using time-varying root-locus

Author

Jarvenhaara, Jani ; Tchamov, Nikolay T. ; Filanovsky, Igor M.

Author_Institution

Dept. of Electron. & Commun. Eng., Tampere Univ. of Technol., Tampere, Finland

fYear

2015

fDate

24-27 May 2015

Firstpage

2640

Lastpage

2643

Abstract

The application of time-varying root-locus (TVRL) algorithm for transient analysis of electronic circuits with potentially unstable operating points is presented. The TVRL algorithm calculates the dynamic movement of evolving characteristic equation roots by computing them at a sequence of time instants during the circuit transient. This TVRL indicates the existence of potentially unstable operating points. An LC-filter with Q-enhancement is used as example to demonstrate the dynamics of the circuit characteristic equation roots during power supply transient.

Keywords

LC circuits; time-varying filters; transient analysis; LC-filter; Q-enhancement; TVRL algorithm; circuit characteristic equation roots; circuit transient; electronic circuits; power supply transient; time-varying root-locus algorithm; transient analysis; Inductors; Integrated circuit modeling; Mathematical model; Oscillators; Power supplies; Q-factor; Transient analysis; Conditional Instability; Power Supply Transient; Q-Enhanced Filter; Semi-Symbolic Analysis; Time-Variable Root Locus;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2015 IEEE International Symposium on

Conference_Location

Lisbon

Type

conf

DOI

10.1109/ISCAS.2015.7169228

Filename

7169228