Title :
A new APWM technique with harmonics elimination and power factor control in AC choppers
Author :
Jang, Do-Hyun ; Choe, Gyu-Ha
Author_Institution :
Dept. of Electr. Eng., Hoseo Univ., Chungnam, South Korea
Abstract :
A novel asymmetrical pulsewidth modulated (APWM) control technique for AC choppers is proposed which can improve the input power factor and eliminate the harmonics of output voltage up to a specified order, and also enables linear control of the fundamental component of the output voltage. The PWM switching patterns at the specified phase angle are obtained by the Newton-Raphson method. By digital simulation several characteristics for an AC power circuit with the proposed AC chopper are investigated theoretically, and then compared with those of the conventional PWM and APWM techniques
Keywords :
choppers (circuits); circuit analysis computing; digital simulation; harmonics; iterative methods; power control; power engineering computing; power factor; pulse width modulation; switching circuits; voltage control; AC choppers; Newton-Raphson method; asymmetrical PWM; circuit analysis computing; digital simulation; harmonics elimination; linear control; output voltage; phase angle; power factor control; switching patterns; Choppers; Circuits; Equations; Newton method; Power system harmonics; Pulse modulation; Pulse width modulation; Reactive power; Space vector pulse width modulation; Voltage control;
Conference_Titel :
Industrial Electronics, Control, Instrumentation, and Automation, 1992. Power Electronics and Motion Control., Proceedings of the 1992 International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0582-5
DOI :
10.1109/IECON.1992.254624
