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ASYMMETRICAL MULTILEVEL INVERTER FOR HIGHER OUTPUT VOLTAGE LEVELS ABSTRACT Now a days the growth of interest in multilevel inverters has been increasing because there are enormous applications of there in FACTS and industrial drives etc., Although there are many topologies of multilevel inverters in literature, popular among them are cascaded H-bridge. In general the control methods of these cascaded inverters are designed an assumption of having all dc source voltages same for all H-bridges. This paper discusses the abilities of cascaded multilevel inverter to produce more output voltage levels with same number of H-bridges, but with different input voltage ratios. The ideal nature of input dc voltage sources is shown as an advantage in this paper. For a single-phase seven-level inverter, 12 power electronic switches are required in both the diode-clamped and the fling-capacitor topologies. Asymmetric voltage technology is used in the cascade H-bridge multilevel inverter to allow more levels of output voltage, so the cascade H bridge multilevel inverter is suitable for applications with increased voltage levels. Two H bridge inverters with a dc bus voltage of multiple relationships can be connected in cascade to produce a single phase seven-level inverter and eight power electronic switches are used. In this paper a new asymmetric Bi-directional converter topology which uses contradictory ratios of dc voltage sources. The proposed inverter is then used to feed an induction motor drive and the simulation results are shown. Block diagram for proposed system DESIGNG SOFTWARE AND TOOLS: MAT LAB /SIMULATION Software and sim power systems tools are used. Mainly control system tools, power electronics and electrical elements tools are used.