Open AccessThree Phase Eleven Level Modular Multilevel Inverter with PD-PWM for Grid Connected System
Author(s) -
P Yogini Dr. Sujatha Balaraman
Publication year - 2020
Publication title -
international journal of modern trends in science and technology
Language(s) - English
Resource type - Journals
ISSN - 2455-3778
DOI - 10.46501/ijmtst060816
Subject(s) - total harmonic distortion , modular design , pulse width modulation , inverter , controller (irrigation) , electronic engineering , three phase , computer science , voltage , control theory (sociology) , engineering , topology (electrical circuits) , electrical engineering , control (management) , agronomy , artificial intelligence , biology , operating system
The prominence of Modular Multilevel Inverters (MMI) is rising owing their merits of simple mechanicalconstruction and good voltage sharing for semiconductor devices. Mostly Multilevel Inverters use more thanone source; however, the effective use of all the sources at all levels is rare. Conventional Multilevel Inverterswill diminish the energy efficiency of the conversion system. When compared to conventional multilevelinverter, Modular Multilevel Inverter with a high numbers of voltage levels seem to be the most suitablebecause of the use of an isolated dc source. This paper explores a three-phase eleven level modular multilevelinverter with phase disposition pulse width modulation technique (PD-PWM) that can extract power from allthe sources at all the levels. Besides, this paper develops a synchronous d-q reference frame controller tocontrol the current of 11kV. When compared with Reduced Switch Count based Multilevel InverterSeries/Parallel switching topologies, the Modular Multilevel Inverter provides better Total HarmonicDistortion (THD) of output voltage and utilization factor.