Small boundary-pulse-width control for dc to ac single-phase inverters

The main purpose of pulse-width -modulation technique for power inverters is to control the output voltage. The most familiar techniques: uniform-pulse-width-modulation and sinusoidal-pulse-width-modulation. This paper proposes new techniques for improving the inverter performance. The methods are based on pulse-width technique. A variation of pulse-widths for the middle and boundary pulses is implemented, to reduce the harmonic effect and obtaining an improved inverter operation. Result in reduced harmonics of the inverter output voltage and an optimum operation is obtained through using small boundary-pulse-width technique.