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      Quantitative power loss analysis and optimisation in Nth-order low-voltage multilevel converters

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          Abstract

          Focusing on cascaded H-bridge converters for grid-tie battery energy storage, a practical, analytical method is derived to evaluate the switching-associated power loss in multilevel converters, evaluated from a number of sources of loss. This new method is then used to find performance trends in the use of converters of increasing order over a range of switching frequencies. This includes an experimental analysis into predicting the performance of MOSFET body diodes. Authors’ analysis with this model shows that a multilevel converter can have lower losses than the equivalent single-bridge, three-level converter, particularly at higher switching frequencies, due to the availability of suitable switching devices. It also has interesting implications for enabling the use of cutting-edge non-silicon power switching devices to further improve potential efficiencies.

          Most cited references10

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          State-of-Charge (SOC)-Balancing Control of a Battery Energy Storage System Based on a Cascade PWM Converter

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            A Single-Phase Multilevel Inverter With Battery Balancing

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              • Record: found
              • Abstract: not found
              • Article: not found

              Cell SoC Balancing Using a Cascaded Full-Bridge Multilevel Converter in Battery Energy Storage Systems

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                Author and article information

                Contributors
                Journal
                IET-PEL
                IET Power Electronics
                IET Power Electron.
                The Institution of Engineering and Technology
                1755-4535
                1755-4543
                19 February 2019
                7 June 2019
                19 June 2019
                : 12
                : 7
                : 1652-1661
                Affiliations
                Electrical and Electronic Engineering, University of Sheffield , 3 Solly Street, Sheffield, S1 4DE, UK
                Article
                IET-PEL.2018.5928 PEL.2018.5928.R1
                10.1049/iet-pel.2018.5928
                d89b7f1b-4725-408a-ae32-69514f49170e
                © The Institution of Engineering and Technology
                History
                : 11 September 2018
                : 15 January 2019
                : 18 February 2019
                Page count
                Pages: 0
                Categories
                Research Article

                Computer science,Engineering,Artificial intelligence,Electrical engineering,Mechanical engineering,Renewable energy
                MOSFET body diodes,analytical method,optimisation,non-silicon power switching devices,power MOSFET,higher switching frequencies,n th-order low-voltage multilevel converters,three-level converter,cascaded H-bridge converters,grid-tie battery energy storage,energy storage,equivalent single-bridge,practical method,switching-associated power loss,switching convertors,performance trends,quantitative power loss analysis,power grids,cutting-edge nonsilicon power,power semiconductor switches

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