This paper deals with a pulse width modulation (PWM) switching strategy through carrier modification. The proposed inverted sine carrier PWM (ISCPWM) method, which uses the conventional sinusoidal reference signal and an inverted sine carrier, has a better spectral quality and a higher fundamental component compared to the conventional sinusoidal PWM (SPWM) without any pulse dropping. The ISCPWM strategy enhances the fundamental output voltage particularly at lower Modulation index ranges by keeping the total harmonic distortion (THD) lower without involving changes in device switching losses. The presented mathematical Preliminaries for PWM, SPWM and ISCPWM give a conceptual understanding and a comparison of the strategies. The detailed comparison of the harmonic content and fundamental component of all three techniques for different values of modulation index also presented. © 2018, Institute of Advanced Scientific Research, Inc. All rights reserved.