Title :
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
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;
Journal_Title :
Industry Applications, IEEE Transactions on
