Power-electronic inverters are becoming popular for various industrial drives applications. In recent years also high-power and medium-voltage drive applications have been installed. Performance of multilevel inverter is superior to that of two level inverters due to reduced harmonic distortion and reduced electromagnetic interference. But it has some disadvantages also such as increased number of components and voltage balancing. This paper describes the general multilevel inverter schematic. Seven level multilevel inverters consist of ten IGBT Switches and three carriers. The multilevel converter works only in positive polarity and does not generate negative polarities. In this paper we are measuring output voltage and Total Harmonic Distortion (THD).A general method of multilevel modulation phase disposition (PD) SPWM is utilized to drive the inverter and can be extended to any number of voltage levels.