Abstract: Electrical drive using Induction motor draws heavy current during starting condition. The handling of large drives with variable speed in not possible with ordinary conventional inverter so the Multi level inverters are the best choice among available. The paper present MLI with H-Bridge cascade system for industrial application. The preset work is simulated with 7 and 9 level inverters and compares their results.
Keywords: MLI, Cascade, H-Bridge, Modulation index, Carrier Frequency.