Title :
Real time digital feedback control of three phase PWM inverter with quick transient response suitable 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 sinusoidal three-phase PWM (pulsewidth-modulated) inverter output. Sensing two line-to-line voltages the required pulse patterns for deadbeat response are computed in real time, based on the predicted voltages by an observer at 18 kHz sampling frequency. This closed-loop voltage control inherently results in a very low total harmonic distortion and a very quick transient response with less filter capacity. The authors describe the modeling technique, theoretical analysis, simulations, and experimental results.<>
Keywords :
closed loop systems; digital control; feedback; invertors; pulse width modulation; transient response; voltage control; closed-loop voltage control; deadbeat response; digital feedback control; low total harmonic distortion; modeling technique; observer; quick transient response; real-time control; three phase PWM inverter; uninterruptible power supply; Digital control; Feedback control; Frequency; Pulse inverters; Pulse width modulation inverters; Sampling methods; Space vector pulse width modulation; Total harmonic distortion; Transient response; Voltage control;
Conference_Titel :
Industry Applications Society Annual Meeting, 1988., Conference Record of the 1988 IEEE
Conference_Location :
Pittsburgh, PA, USA
DOI :
10.1109/IAS.1988.25143
