Title :
Adaptive repetitive control of a PWM inverter for AC voltage regulation with low harmonic distortion
Author :
Yeh, Shing-Chung ; Tzou, Ying-Yu
Author_Institution :
Inst. of Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
An adaptive repetitive control scheme is proposed and applied in the control of a PWM inverter used in a high-performance AC power supply. The proposed control scheme can adaptively eliminate periodic distortions resulted by unknown periodic load disturbances in an AC power supply. The proposed adaptive repetitive controller consists of a voltage regulator using state feedback control, a repetitive controller with tuning parameters, and an adaptive controller with recursive least-squares estimator. This adaptive repetitive controller, used for AC voltage regulation, has been realized by using a single-chip digital signal processor (DSP) TMS320C14 from Texas Instruments. Experimental verifications have been carried out on a 2 kVA PWM inverter. Simulation and experimental result show that the DSP-based adaptive repetitive controller can achieve both good dynamic response and low THD under large load disturbances and plant uncertainties
Keywords :
DC-AC power convertors; PWM invertors; adaptive control; circuit testing; control system analysis; control system synthesis; digital control; digital signal processing chips; harmonic distortion; least squares approximations; power engineering computing; power supplies to apparatus; power system harmonics; recursive estimation; state feedback; voltage control; voltage regulators; 2 kVA; AC power supply; AC voltage regulation; DSP; PWM inverter; THD; TMS320C14; adaptive controller; adaptive repetitive control; dynamic response; experiments; harmonic distortion; periodic distortions; periodic load disturbances; recursive least-squares estimator; repetitive controller; simulation; single-chip digital signal processor; state feedback control; tuning parameters; voltage regulator; Adaptive control; Digital signal processors; Power supplies; Programmable control; Pulse width modulation inverters; Recursive estimation; Regulators; State estimation; State feedback; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1995. PESC '95 Record., 26th Annual IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-2730-6
DOI :
10.1109/PESC.1995.474807
