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Open AccessArticle

An Innovative Dual-Boost Nine-Level Inverter with Low-Voltage Rating Switches

Department of Electrical Engineering and Automation, Aalto University, 02150 Espoo, Finland
Department of Electronics Design (EKS), Mid Sweden University, Holmgatan 10, 85170 Sundsvall, Sweden
Management and Production Technologies of Northern Aveiro—ESAN, Estrada do Cercal 449, Santiago de Riba-Ul, 3720-509 Oliveira de Azeméis, Portugal
Research and Development Unit in Mechanical and Industrial Engineering (UNIDEMI), Department of Mechanical and Industrial Engineering, Faculty of Science and Technology (FCT), New University of Lisbon, 2829-516 Caparica, Portugal
Department of Maths, Physics and Electrical Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK
Author to whom correspondence should be addressed.
Energies 2019, 12(2), 207;
Received: 3 December 2018 / Revised: 27 December 2018 / Accepted: 4 January 2019 / Published: 9 January 2019
This article presents an innovative switched-capacitor based nine-level inverter employing single DC input for renewable and sustainable energy applications. The proposed configuration generates a step-up bipolar output voltage without end-side H-bridge, and the employed capacitors are charged in a self-balancing form. Applying low-voltage rated switches is another merit of the proposed inverter, which leads to extensive reduction in total standing voltage. Thereby, switching losses as well as inverter cost are reduced proportionally. Furthermore, the comparative analysis against other state-of-the-art inverters depicts that the number of required power electronic devices and implementation cost is reduced in the proposed structure. The working principle of the proposed circuit along with its efficiency calculations and thermal modeling are elaborated in detail. In the end, simulations and experimental tests are conducted to validate the flawless performance of the proposed nine-level topology in power systems. View Full-Text
Keywords: power conversion; multilevel inverter; improved switched-capacitor module; multi carrier based modulation power conversion; multilevel inverter; improved switched-capacitor module; multi carrier based modulation
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Saeedian, M.; Pouresmaeil, E.; Samadaei, E.; Manuel Godinho Rodrigues, E.; Godina, R.; Marzband, M. An Innovative Dual-Boost Nine-Level Inverter with Low-Voltage Rating Switches. Energies 2019, 12, 207.

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