抽象的

Performance and Comparative Evaluation of Improved Multicell Impedance Source Inverter for Drives

V.Raghavendra Rajan, C.S.Ajin Sekhar, R.Hemantha Kumar , M.Sasikumar

Voltage-Source Inverter is limited by voltage step-down operation only. Their boosting capabilities are anyhow less with high component stresses and poorer spectral performances caused by low modulation index ratios.Their boosting gains are, therefore, restricted in practice.To overcome these we use the Improved Multicell switched-inductor Z-source inverter is proposed.In adding with extra boosting the flexibility is kept active for the number of semiconductors which is unchanged, Voltage-type Z-source inverter was earlier employed.Now,these new classes of inverter is generally less sensitive and Electromagnetic Interference are reduced.By comparing with SPWM technique and SVPWM technique for Induction Motor Drives, whose extra boosting abilities,THD other advantages have been verified in simulation analysis and experiment.