This paper proposes different types of modulation methods for the Diode Clamped Multi Level Inverter (DCMLI). In this paper, a DCMLI is controlled with Sinusoidal PWM technique (SPWM), Third Harmonic Injection PWM technique, Sixty degree PWM technique and Stepped wave technique with Sub harmonic (SHPWM), Carrier Overlapping (CO), Phase shift (PS) , Variable frequency (VF) and the variation of Total Harmonic Distortion (THD) in their outputs are observed and also chosen inverter is controlled by SPWM technique, THI PWM technique, Sixty degree PWM and Stepped wave technique by varying the modulation index. Simulation are performed using MATLAB-SIMULINK. It is observed that SHPWM strategy provide output with relatively low distortion. It is observed that COPWM strategy provides higher Vrms compared to other modulation strategies.