International Journal of Engineering Research in Electrical and Electronic Engineering (IJEREEE)

Multilevel STATCOM of Cascaded Two-Level Inverter for High-Power Applications

Author : K.Venkatesh ¹ P.Suresh Babu ² N.Sreeramulu Reddy ³

Date of Publication :7th August 2016

Abstract: A simple static VAR compensating scheme using a cascaded two-level inverter-based multilevel inverter is proposed. The topology consists of two standard two-level inverters connected in cascade through open-end windings of a three-phase transformer. The dc-link voltages of the inverters are regulated at different levels to obtain four-level operation. the performance of the proposed scheme under balanced and unbalanced supply-voltage conditions. Further, stability behavior of the topology is investigated. The dynamic model is developed and transfer functions are derived. The system behavior is analyzed for VARious operating conditions

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