Comparative Analysis of a 3-Level DCMLI and MMC Based Grid Tied Solar PV System
Krishna Chaitanya Diggavi1, Lakma Vandana2, Posa Naga Sai Jyothi3

1Krishna Chaitanya Diggavi, Department of EEE, Guru Nanak Institute of Technology, Hyderabad (Telangana), India.
2Lakma Vandana, Department of EEE, Guru Nanak Institute of Technology, Hyderabad (Telangana), India.
3Posa Naga Sai Jyothi, Department of EEE, JBIT, Hyderabad (Telangana), India. India.
Manuscript received on 07 April 2019 | Revised Manuscript received on 20 April 2019 | Manuscript published on 30 April 2019 | PP: 1134-1138 | Volume-8 Issue-6, April 2019 | Retrieval Number: F3712048619/19©BEIESP
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Abstract: Evaluating a grid-tied photovoltaic system performance using DCML inverter and MMC is presented here. The generated output from the PV system is given to the boost converter, and the INCMPPT tracked output is converted to ac with the help of two different methods and connected to the grid. Constant current control technique is used in both the cases for generating the triggering pulses for the inverter. MMC’s are having many advantages when compared with the DCML inverter. Both the systems are designed in MATLAB for checking the performance of a 3 level inverter. As per the simulation studies, we can say that a 3 level inverter with MMC is giving less THD when compared with the diode clamped system.
Keyword: MMC (Modular Multilevel Converter), DCML (Diode Clamped Multilevel Inverter), RES (Renewable Energy Sources).
Scope of the Article: Expert Systems