Abstract—In this paper, an experimental study is carried out to investigate the performance of various voltage control signal techniques for single phase PWM inverter. These techniques include single pulse width modulation, multiple pulse width modulation, sinusoidal pulse width modulation, modified sinusoidal pulse width modulation and phase displacement control. The performance of these carrier schemes are evaluated in terms of harmonic factor, total harmonic distortion and lowest order harmonic through simulation runs in MATALAB/Simulink. The technique with better harmonic spectrum is then implemented using an inexpensive and readily available AT89S52 microcontroller which generates the gating signals including dead time for switching devices comprising the inverter. The study can be employed for teaching the concepts of carrier schemes to undergraduate students taking the course of power electronics.

Index Terms—Control signal techniques, matlab/simulink,microcontroller at89s52, pulse width modulation, single phase inverter.

The authors are with the Electrical Engineering Department, The University of Lahore, Raiwind Road, Lahore Pakistan. (e-mail: athar@uol.edu.pk; asimmukhtar@ymail.com; engr.umarfarooq@yahoo.com,abid@uol.edu.pk).

Cite: Athar Hanif, Asim Mukhtar, Umar Farooq, and Abid Javed, "Comparative Analysis of Voltage Control Signal Techniques for Single Phase Inverter," International Journal of Computer and Electrical Engineering vol. 3, no. 6, pp. 762-770, 2011.