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Multisource switched capacitor based boost multilevel inverter for microgrid application
November 14, 2019 @ 3:00 pm - 4:00 pm
Date/Time: 14th November 2019 (Thursday) at 3:00 PM
Venue: ESB 244
Speaker: Satish R (EE16D026)
Guides: Dr. Lakshminarasamma and Dr. Mahesh Kumar
Growing demand on sustainable energy systems such as photovoltaic (PV), fuel cell or battery based energy systems has made the efficient conversion of electric power a primary requirement. The electric power conversion in these systems featuring reduced power loss with improved output power quality is preferred. In high power (up to 10 kW) distributed generation, fed by low voltage (24/48 V) solar PV, dc-ac conversion system needs to have higher gain, efficiency and lower total harmonic distortion (THD) and reduced filter size. In this regard, variants of switched capacitor based topologies are presented in the literature. In this work, a single-phase multisource switched capacitor based boost multilevel inverter is proposed for PV fed applications. The inverter features high gain, increased number of levels with reduced components count and lesser THD. A capacitor energy utilization factor is defined to check the feasibility of the topology for a given power rating. The topology is analyzed and the design guidelines are presented along with loss and efficiency calculations. The proposed switched capacitor based inverter is verified with 500 W experimental prototype and the results will be discussed in detail.