TY - GEN
T1 - A simple method for improving input power factor of single-phase UPS
AU - Lee, Jia You
AU - Tsai, Win Inne
AU - Chang, Yu Ming
PY - 1991/12/1
Y1 - 1991/12/1
N2 - A simple method for improving the input power factor of a single-phase online UPS (uninterruptible power supply) by making the DC-bus capacitance as small as possible is proposed. A feedforward modulation scheme is provided for solving the rapid DC-bus voltage fluctuation problem due to insufficient filtering. A discrete-time model of the UPS with the proposed scheme and a design technique for the compensators are also developed. Finally, a laboratory prototype 1-kVA single-phase online UPS is set up to experimentally verify the predicted and analyzed results. The proposed UPS features a high input power factor, fast transient response, high efficiency, light weight, and small size.
AB - A simple method for improving the input power factor of a single-phase online UPS (uninterruptible power supply) by making the DC-bus capacitance as small as possible is proposed. A feedforward modulation scheme is provided for solving the rapid DC-bus voltage fluctuation problem due to insufficient filtering. A discrete-time model of the UPS with the proposed scheme and a design technique for the compensators are also developed. Finally, a laboratory prototype 1-kVA single-phase online UPS is set up to experimentally verify the predicted and analyzed results. The proposed UPS features a high input power factor, fast transient response, high efficiency, light weight, and small size.
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M3 - Conference contribution
AN - SCOPUS:0026308489
SN - 0879426888
T3 - IECON Proceedings (Industrial Electronics Conference)
SP - 830
EP - 835
BT - IECON Proceedings (Industrial Electronics Conference)
PB - Publ by IEEE
T2 - Proceedings of the 1991 International Conference on Industrial Electronics, Control and Instrumentation - IECON '91
Y2 - 28 October 1991 through 1 November 1991
ER -