• Sonal Purkait
• Rahul Pandey

With the recent upgradation in technology, semiconductors have brought revolution into their usage as dc-dc converters. Tons of research has been carried out for HVDC transmission. Out of all dc-dc converters, Modular Multilevel Converters (MMC) has emerged as an attractive area for research and design in industry due to their modular & easy scalable features, compact space requirement, and control of power flow along with regulation of voltage. The paper here presents an overview of the various fundamental concepts in Modular Multilevel Converters, their control and modulation techniques and applications along with the challenges that are faced during designing.

Modular Multilevel Converters (MMC), Submodule (SM), HVDC, Capacitor Voltage Balancing, Circulating Current Control, PWM, SHE

"Modular Multilevel Converters an Overview : Basic Concepts, Design and Control along with Applications.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.835-843, July-2018, Available :http://www.jetir.org/papers/JETIR1807135.pdf

"Modular Multilevel Converters an Overview : Basic Concepts, Design and Control along with Applications.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp835-843, July-2018, Available at : http://www.jetir.org/papers/JETIR1807135.pdf