Title :
High frequency deadbeat control of three phase PWM inverter used for uninterruptible power supply
Author :
Kawamura, Atsuo ; Ishihara, Kiyoshi
Author_Institution :
Dept. of Electr. & Comput. Eng., Yokohama Nat. Univ., Japan
Abstract :
A digital control technique is proposed to obtain a sinusoidal three-phase pulsewidth-modulated (PWM) inverter output. By sensing two line-to-line voltages, the required pulse patterns for deadbeat response can be computed in real time using the predicted voltages at 9 kHz sampling frequency. This closed-loop voltage control inherently results in a very low total harmonic distortion and a very rapid transient response with less filter capacity. The modeling technique, theoretical analysis, simulations, and experimental results are described.<>
Keywords :
closed loop systems; digital control; emergency power supply; invertors; pulse width modulation; voltage control; 9 kHz; closed-loop voltage control; digital control; harmonic distortion; line-to-line voltages; pulse patterns; sinusoidal inverter output; three phase PWM inverter; transient response; uninterruptible power supply; Digital control; Frequency; Pulse inverters; Pulse width modulation inverters; Pulsed power supplies; Sampling methods; Space vector pulse width modulation; Total harmonic distortion; 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.1988.18191
