Title :
Towards a zero-output impedance UPS system
Author :
Boost, Michael A. ; Ziogas, Phoivos D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
A categorization of loads requiring clean uninterruptible power is provided, a thorough analysis of their effects is given, and presently used partial solutions are examined. The topology of a low-impedance 3-φ high-power inverter stage, designed to alleviate substantially the current difficulties faced by interruptible power supplies (UPSs) when dealing with unbalanced and/or nonlinear loads, is described. On the basis of theoretical and extensive experimental results, it is concluded that the low-output-impedance 3-φ UPS presented performs well under both unbalanced and nonlinear load application
Keywords :
invertors; uninterruptible power supplies; low-impedance high-power invertor; nonlinear loads; unbalanced loads; uninterruptible power supplies; zero-output impedance UPS system; Circuit testing; Electronic equipment testing; Filters; Impedance; Manufacturing; Pulse width modulation; Pulse width modulation inverters; Robotics and automation; Switched-mode power supply; Uninterruptible power systems;
Journal_Title :
Industry Applications, IEEE Transactions on
