Author(s)

Vasudevan Karthikeyan¹, gopal Jamuna²

¹Electrical and Electronics Engineering Department, Dhanalakshmi Srinivasan College of Engineering and Technology, Chennai, India.
²Electrical and Electronics Engineering Department, Jerusalem College of Engineering, Chennai, India.

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.

Multilevel Inverter, Reduced Components, Hybrid PWM, Asymmetrical dc Sources, Harmonic Distortion

Karthikeyan, V. and Jamuna, g. (2016) Hybrid Control Strategy for BCD Topology Based Modular Multilevel Inverter. Circuits and Systems, 7, 1441-1454. doi: 10.4236/cs.2016.78126.