A Single-Stage Common Ground-Type Transformerless Five-Level Inverter Topology

Autor:	N. Sandeep, Dhafer Almakhles, Arpan Hota, M. Jagabar Sathik
Rok vydání:	2022
Předmět:	Computer science Photovoltaic system Boost converter Energy Engineering and Power Technology Inverter Topology (electrical circuits) Electrical and Electronic Engineering Topology Inductor Switched capacitor Network topology Voltage
Zdroj:	IEEE Journal of Emerging and Selected Topics in Power Electronics. 10:837-845
ISSN:	2168-6785 2168-6777
DOI:	10.1109/jestpe.2021.3095125
Popis:	In solar photovoltaic (PV) inverters, a separate boost converter is often used to boost the input voltage, increasing the number of components, cost and weight of the systems and losses. To address this issue, a new common ground type (CGT) transformer-less five-level (5L) switched capacitor inverter topology with integrated boost converter is presented in this paper. The proposed topology is capable of soft-charging the floating switched-capacitor (SC) and has reduced component count. The careful amalgamation of the inductor-based boosting and SC-based boosting results into a higher gain. Unlike the existing CGT 5L inverters, the proposed topology provides a charging state for the SC in every switching cycle for 5L operation. The benefits of proposed topology are highlighted and compared with the other recent switched-capacitor inverter topologies. The detailed operation of the proposed topology is supported with necessary mathematical analysis. The simulation and experimental results are presented to validate the feasibility of the proposed topology.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6e7812e420174c0d9e06e6250f89aa1b https://doi.org/10.1109/jestpe.2021.3095125 Zobrazit plný text záznamu