Work

Three-Phase Multilevel DC/AC Converter and Synergetic Modulation for Split Batteries

Year: 2025

Type: article

Abstract: This letter introduces a three-phase multilevel converter for the integration of multiple battery submodules. The circuit comprises a synergetic modulated quasi-single stage design that includes a three-phase three-level voltage source converter operating at low switching frequency and two modular series-connected half-bridge converters operating with high switching frequency. Therein, all DC-link voltage rated devices switch at low frequency and zero voltage while sinusoidal currents are ensured without a complicated control. Furthermore, it provides a multilevel conversion and consequently smaller voltage transients enhancing power quality. Additionally, the modular configuration enables flexible management of the series-connected battery submodules, eliminating the need for an extra balancer between the battery submodules. This paper provides an explanation of circuit operation and the synergistic modulation technique. Simulations and experimental results are presented to validate the feasibility of the proposed circuit.

Source: IEEE Journal of Emerging and Selected Topics in Industrial Electronics

DOI: 10.1109/jestie.2025.3614002

Authors: Reyhaneh Eskandari, Hossein Khoun Jahan, Prasanth Venugopal, Alan J. Watson, Patrick Wheeler, Thiago Batista Soeiro

Institutions: University of Twente, University of Nottingham

Language: English

Topic: Multilevel Inverters and Converters

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: green

Funders: European Commission, H2020 Marie Skłodowska-Curie Actions