Stability study of PC power system

Author

Wong, Pit-Leong ; Lee, Fred C. ; Zhou, Xunwei

Author_Institution

Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

37

Issue

1

fYear

2001

Firstpage

73

Lastpage

80

Abstract

In this paper, the computer power system is studied from the point of view of system integration stability. The voltage regulator module (VRM) and silver-box are modeled and analyzed. The computer power system is unlikely to have stability problems based on today´s structure, although there can be strong interactions between the VRM and silver-box in multiple VRM systems. Future trends of the PC power system are also analyzed. With power level increases, VRMs will have stronger interactions at lower frequencies. An example of conditional stability is shown to challenge the impedance stability criterion of integrated systems. Possible solutions to this problem are provided

Keywords

computer power supplies; electric impedance; stability; voltage control; voltage regulators; PC power system; computer power system; conditional stability; impedance stability criterion; silver-box; system integration stability; voltage regulator module; Impedance; Industry Applications Society; Power supplies; Power system analysis computing; Power system modeling; Power system stability; Power system transients; Regulators; Stability criteria; Voltage;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.903129

Filename

903129