Title :
Design of a high performance three-phase UPS with unity input power factor and high DC-voltage conversion ratio
Author :
Tsai, Wen-Inne ; Sun, York-Yih ; Lee, JiaYou
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
A three-phase uninterruptible power supply system (UPS) with a unity input power factor and a high DC voltage conversion ratio is designed and implemented. This study contains three main parts. First, a three-phase sinusoidal pulse width modulation (SPWM) AC-to-DC power converter with unity input power factor and near-optimum voltage dynamic regulation is proposed. Second, an optimum harmonic injection pulse width modulation (HIPWM) function, which gives a higher DC voltage conversion ratio for three-phase inverters, is presented. Third, a new control configuration with an instantaneous and average feedback for the UPS inverter under the HIPWM scheme is proposed.<>
Keywords :
control system synthesis; feedback; invertors; network synthesis; power convertors; power factor; pulse width modulation; uninterruptible power supplies; voltage control; AC/DC power convertors; DC voltage conversion ratio; PWM; UPS; control system synthesis; feedback; harmonic injection pulse width modulation; inverters; network synthesis; performance; sinusoidal pulse width modulation; three-phase; uninterruptible power supply; unity input power factor; voltage control; Circuits; Computer simulation; Feedback; Pulse modulation; Pulse width modulation; Pulse width modulation inverters; Reactive power; Switches; Uninterruptible power systems; Voltage;
Conference_Titel :
Power Conversion Conference, 1993. Yokohama 1993., Conference Record of the
Conference_Location :
Yokohama, Japan
Print_ISBN :
0-7803-0471-3
DOI :
10.1109/PCCON.1993.264239
