A microprocessor-based Load voltage control using an AC chopper | ||||
ERJ. Engineering Research Journal | ||||
Article 6, Volume 21, Issue 2, April 1998, Page 71-89 PDF (1.29 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/erjm.1998.73018 | ||||
View on SCiNiTO | ||||
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 | ||||
Statistics Article View: 77 PDF Download: 453 |
||||