Title :
Optimal harmonic reduction in AC/AC chopper converters
Author :
Deib, D.A. ; Hill, H.W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Ohio Univ., Athens, OH, USA
Abstract :
An optimal control strategy for selecting firing and commutation angles in pulsewidth-modulated (PWM) AC-AC chopper-type, single-phase converters is proposed. The method minimizes output-voltage harmonic distortion through numerical techniques, and can also simultaneously eliminate certain chosen harmonics. Best results are obtained when no harmonics are completely eliminated, but instead are allowed to have small residual values. The method yields lower weighted harmonic distortion than the harmonic elimination techniques. Freeing the solution from the usual constraint of quarter-wave symmetry results in even lower harmonic distortion
Keywords :
AC-AC power convertors; PWM power convertors; choppers (circuits); commutation; control system synthesis; harmonic distortion; optimal control; power system harmonics; thyristor convertors; voltage control; AC/AC power convertors; chopper; commutation angles; firing angles; numerical techniques; optimal control strategy; output-voltage harmonic distortion; single-phase; weighted harmonic distortion; Choppers; Equations; Harmonic analysis; Harmonic distortion; Power harmonic filters; Switching frequency; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1993. PESC '93 Record., 24th Annual IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-1243-0
DOI :
10.1109/PESC.1993.472049
