Volume 18, No. 6, 2021
Implementation And Power Quality Analysis Of Half Bride Modular Multi-Level Inverter Using Nearest Level Modulation Technique Up To 22 Levels
Jahangeer Badar Soomro , Faheem A. Chachar , Farah Shah , Jamshed Ahmed Ansari , Sadaqat Ali , Afaque Manzoor Soomro
Abstract
Modular Multilevel inverters have now become need for most of the modern applications like HVDC systems, Electric vehicles, Variable speed drives and Flexible Alternating-current Transmission system (FACTS) because of their better power quality and lesser total harmonic distortion as compared to other inverters. Many PWM techniques are used to power these converters. The existing techniques are reason for greater switching losses. This paper provides a practical criteria for the choice of modulation technique for MMCs. Also, there is an attempt to implement MMC up to 22 levels by using nearest level modulation technique which is considered to be simpler and robust for the systems like MMC, and these levels are then compared in terms of THD produced by each level.
Pages: 2982-2993
Keywords: Modular Multilevel Converter (MMC), Nearest level Modulation (NLM), Total Harmonic distortion (THD).