Elham Fadavi۱ - MSc Student, Central Tehran Branch of Islamic Azad University
Shahram Javadi - Assistant Professor, Central Tehran Branch of Islamic Azad University (Corresponding author)
Arsalan Hekmati - Assistant Professor, Shaid Beheshti University

Cascade Multilevel Inverters are one of the most popular and useful inverters among all types and have lots of usage in different applications such as solar plants, industrial drivers. The performance of drivers is highly dependent on the quality of voltage which applied to them. The quality of output voltage is ependent on Total Harmonic Distortion1 content. In this paper, the THD content of 7,11,15,17 levels of Cascade Multilevel Inverters2 have been investigated. THD content are mostly depend on the switching angles of each unit of inverters, in this article with the usage of Matlab Simulink THD content of each 7,11,15,17 level of Cascade MLI are analysed and with comparison between all of them, it has been founded that 17 level Cascade MLI is satisfies the standards more than other

Cascade Multilevel Inverter, Total Harmonic Distortion, Switching angles