Title :
Design and implementation of a multiprocessor-based uninterruptible power supply
Author :
Tzou, Y.Y. ; Wu, H.J.
Author_Institution :
Inst. of Control Eng., Nat. Chiao-Tung Univ., Taiwan
Abstract :
The design and implementation of a multiprocessor-based uninterruptible power supply (UPS) are presented. A digital-power factor compensator is proposed for the closed-loop regulation of the synchronously controlled rectifier. Digital sinusoidal pulsewidth-modulation (SPWM) techniques with a digital compensator are used to regulate the PWM inverter of the UPS. Fast transient response and high efficiency have been obtained. A 5 kVA transistorized UPS has been built in the laboratory, and experimental results have shown its superiority.<>
Keywords :
closed loop systems; computerised control; digital control; emergency power supply; invertors; parallel processing; power control; power factor correction; pulse width modulation; rectifying circuits; 5 kVA; PWM inverter; closed-loop regulation; digital-power factor compensator; multiprocessor-based uninterruptible power supply; sinusoidal pulsewidth-modulation; synchronously controlled rectifier; transient response; transistorized UPS; Batteries; Communication system control; Digital modulation; Frequency synchronization; Pulse inverters; Pulse width modulation inverters; Reactive power; Rectifiers; Uninterruptible power systems; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1988. PESC '88 Record., 19th Annual IEEE
Conference_Location :
Kyoto, Japan
DOI :
10.1109/PESC.1988.18192
