DocumentCode :
1327446
Title :
High-performance programmable AC power source with low harmonic distortion using DSP-based repetitive control technique
Author :
Tzou, Ying-Yu ; Ou, Rong-Shyang ; Jung, Shih-Liang ; Chang, Meng-Yueh
Author_Institution :
Dept. of Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Volume :
12
Issue :
4
fYear :
1997
fDate :
7/1/1997 12:00:00 AM
Firstpage :
715
Lastpage :
725
Abstract :
This paper proposes a new control scheme based on a two-layer control structure to improve both the transient and steady-state responses of a closed-loop regulated pulse-width-modulated (PWM) inverter for high-quality sinusoidal AC voltage regulation. The proposed two-layer controller consists of a tracking controller and a repetitive controller. Pole assignment with state feedback has been employed in designing the tracking controller for transient response improvement, and a repetitive control scheme was developed in synthesizing the repetitive controller for steady-state response improvement. A design procedure is given for synthesizing the repetitive controller for PWM inverters to minimize periodic errors induced by rectifier-type nonlinear loads. The proposed control scheme has been realized using a single-chip digital signal processor (DSP) TMS320C14 from Texas Instruments. A 2-kVA PWM inverter has been constructed to verify the proposed control scheme. Total harmonic distortion (THD) below 1.4% for a 60-Hz output voltage under a bridge-rectifier RC load with a current crest factor of 3 has been obtained. Simulation and experimental results show that the DSP-based fully digital-controlled PWM inverter can achieve both good dynamic response and low harmonics distortion
Keywords :
DC-AC power convertors; PWM invertors; closed loop systems; control system analysis; control system synthesis; dynamic response; harmonic distortion; load (electric); pole assignment; power system harmonics; state feedback; voltage control; 2 kVA; 60 Hz; DSP-based repetitive control technique; PWM inverter; bridge-rectifier RC load; closed-loop regulation; contol design; control simulation; current crest factor; dynamic response; harmonic distortion; pole assignment; programmable AC power source; repetitive controller; sinusoidal AC voltage regulation; state feedback; steady-state response; total harmonic distortion; tracking controller; transient response; two-layer control structure; Digital signal processors; Error correction; Power system harmonics; Pulse inverters; Pulse width modulation inverters; Signal synthesis; State feedback; Steady-state; Transient response; Voltage control;
fLanguage :
English
Journal_Title :
Power Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8993
Type :
jour
DOI :
10.1109/63.602567
Filename :
602567
Link To Document :
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