A microprocessor-based Load voltage control using an AC chopper
ZEIN EL DIN, A., MOHAMED, Z., EL-HEFNAWY, A., ABDEL-GHAFAR, A. (1998). A microprocessor-based Load voltage control using an AC chopper. EKB Journal Management System, 21(2), 71-89. doi: 10.21608/erjm.1998.73018
A.S. ZEIN EL DIN; Z. MOHAMED; A.A. EL-HEFNAWY; A.S. ABDEL-GHAFAR. "A microprocessor-based Load voltage control using an AC chopper". EKB Journal Management System, 21, 2, 1998, 71-89. doi: 10.21608/erjm.1998.73018
ZEIN EL DIN, A., MOHAMED, Z., EL-HEFNAWY, A., ABDEL-GHAFAR, A. (1998). 'A microprocessor-based Load voltage control using an AC chopper', EKB Journal Management System, 21(2), pp. 71-89. doi: 10.21608/erjm.1998.73018
ZEIN EL DIN, A., MOHAMED, Z., EL-HEFNAWY, A., ABDEL-GHAFAR, A. A microprocessor-based Load voltage control using an AC chopper. EKB Journal Management System, 1998; 21(2): 71-89. doi: 10.21608/erjm.1998.73018

A microprocessor-based Load voltage control using an AC chopper

ERJ. Engineering Research Journal
Article 6, Volume 21, Issue 2, April 1998, Pages 71-89    PDF (1.29 M)
Document Type: Original Article
DOI: 10.21608/erjm.1998.73018
Authors
A.S. ZEIN EL DIN1; Z. MOHAMED1; A.A. EL-HEFNAWY2; A.S. ABDEL-GHAFAR2
1department of Electrical Engineering, Faculty of Engineering, Menoufia University, Shebin El-kom, Egypt.
2department of Electrical Engineering, Faculty of Engineering, Menoufia University, Shebin El-kom, Egypt
Abstract
Pulse width Modulated (PWM) control technique for an a-c choppers using harmonic
elimination method is proposed. The firing switching instants of a-c chopper for the
proposed technique is derived theoretically. By using a microprocessor as a controller,
makes it possible to store the firing switching instants time as a look-up table for different
load voltage values. Two MOSFET's are used as an a-c chopper. Experimental results
verifying the simulation analysis of the a-c chopper fed static (R-L) load and dynamic load
(1-ph. induction motor). The proposed strategy is low cost, simplified, and control
effective.
Keywords
A-C chopper; MOSFET's; microprocessor; PWM
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