What is it about?
Switched capacitor multilevel inverter (SCMLI) with reduced components are attractive for higher number of voltage levels due to less implementation complexity and low cost. In this paper, a new family of hybrid SCMLI for high frequency power distribution system is presented to eliminate the intermediate power conversion. Firstly, a five-level (5L)-SCMLI employing a single voltage source is proposed, which is further extended to nine-level (9L) with its operation. Further extension/enhancement of the proposed 9L-SCMLI for generating a higher number of voltage levels with a reduced number of components is achieved on the basis of structural modification. The mathematical analysis for determination of capacitance, power loss analysis and comparative analysis has been provided in detail. A comprehensive comparison with other similar topologies is also provided to highlight the merits of the proposed topology. Simulation and experimental results are discussed for various dynamic load conditions with different output frequencies to validate the suitability of the proposed SCMLI for various HFAC applications, such as renewable energy systems, micro grids, and electric vehicles etc.
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Why is it important?
The number of the semiconductor device is reduced and it has self voltage boosting ability. The switched capacitors are used which has self voltage balancing ability. However, the proposed structure is more suitable for High-frequency DC/AC applications.
Perspectives
Actually, we have enjoyed during writing this article and we have modified the extended structure in a different way and got confused. We chose two extended structures named as VE and HE. During the hardware setup, we have faced a few problems related to non-availability of few components and to purchase the materials it took around two weeks. The paper was reviewed by experts and they gave valuable suggestions. Finally, we all enjoyed the work.
Jagabar Sathik
SRM Group of Educational Institutions
Read the Original
This page is a summary of: Switched-capacitor multilevel inverter with self-voltage-balancing for high-frequency power distribution system, IET Power Electronics, March 2020, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/iet-pel.2019.1249.
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