TITLE:
Hybrid Control Strategy for BCD Topology Based Modular Multilevel Inverter
AUTHORS:
Vasudevan Karthikeyan, gopal Jamuna
KEYWORDS:
Multilevel Inverter, Reduced Components, Hybrid PWM, Asymmetrical dc Sources, Harmonic Distortion
JOURNAL NAME:
Circuits and Systems,
Vol.7 No.8,
June
9,
2016
ABSTRACT: In this paper, a Binary
Coded Decimal (BCD) topology of modular multilevel inverter with reduced
component count is proposed. For the control of this inverter, hybrid control
strategy is used. The proposed modular multilevel inverter uses asymmetrical dc
sources and reduced number of switches topology. This hybrid modulation
technique uses the multicarrier based Pulse Width Modulation (PWM) and the
fundamental frequency modulation strategy. The hybrid modulation algorithm is
implemented with “NUC140” micro-controller. In comparison with the conventional
and some of the recently reported inverter topologies, the proposed inverter
topology is able to generate high number of voltage levels in the output by using
minimum number of components such as dc sources, power switches and driver
circuits. This inverter offers significant performance with less number of
components. The feasibility of the proposed topology is confirmed by simulation
and experimental results.