A voltage source inverter is commonly used to supply a variable frequency, variable voltage to a three phase induction motor in a variable speed application. A suitable pulse width modulation (PWM) technique is employed to obtain the required output voltage in the line side of the inverter. Real-time methods for PWM generation can be broadly classified into triangle comparison based PWM (TCPWM) and space vector based PWM (SVPWM). In TCPWM methods such as sine-triangle PWM, three phase reference modulating signals are compared with a common triangular carrier to generate the PWM signals for the three phases. In SVPWM methods, a revolving reference voltage vector is provided as voltage reference instead of three phase modulating waves. The magnitude and frequency of the fundamental component in the line side are controlled by the magnitude and frequency, respectively, of the reference vector. In SVPWM based inverter determination of sector at each instant of the output voltage is the key algorithm which is very complex, where as TCPWM produces larger magnitude of harmonics in the output voltage so we proposes a novel carrier in lieu of conventional triangular carrier. The proposed carrier gives good fundamental component and less total harmonic distortion when compared with the conventional triangular carrier. The proposed carrier was implemented in the real time using an arbitrary signal generator AFG3102.