BibTeX:

@article{IJIRSTV1I12037,
     title={Analytical Study and Hardware Implementation of Diode Clamped Multilevel Inverter for Electric Drive Applications},
     author={Minu Yacob, Aswathy S. Vijayan, Divya K. S. and Sreehari S.},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={1},
     number={12},
     pages={118--125},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV1I12037.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

The multilevel inverters have drawn tremendous interest in the power industry. The unique structure of multilevel voltage source inverter allows them to reach high voltages with low harmonics without the use of transformers or series-connected synchronized switching devices. A diode clamped multilevel inverter is used .For these type of inverters as the number of levels is high enough ,the harmonic content will be low enough to avoid filters. The inverter efficiency is higher and it is having simple control methods than all other types of multilevel inverters. A nine level multilevel inverter is used here. A comparative study on the THD of nine level diode clamped inverter has been carried out. The diode clamped inverter provides multiple voltage levels from a nine level unidirectional voltage balancing method. Multicarrier SPWM control is used to obtain high quality sinusoidal output voltage with reduced harmonics. It is an effective replacement for the conventional method which has high switching losses and poor drive performance. It reduces the total harmonic distortion and enhances performance of any drive system. Variation in the performance characteristics of the induction motor has been done by connecting it with multilevel inverter. The effectiveness of the system is verified through simulation using MATLAB Simulink package and hardware implementation has been done.

THD, Multilevel Inverter, Diode clamped, MLI, DCMLI