Battery fault tolerance of modular multilevel converter-based battery energy storage systems with redundant submodules

Battery fault tolerance of modular multilevel converter-based battery energy storage systems with redundant submodules

In a modular multilevel converter (MMC) based battery energy storage system (BESS), a fault tolerant design ensures uninterrupted operation of the MMC when a given number of submodules (SMs) have faulty batteries or no batteries. This paper quantitatively investigates the fault tolerance improvement...

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Bibliographic Details
Main Authors: Liang, Gaowen, Farivar, Glen G., Yadav, Gorla Naga Brahmendra, Rodriguez, Ezequiel, Pou, Josep
Other Authors: School of Electrical and Electronic Engineering
Format: Conference or Workshop Item
Language:English
Published: 2021
Subjects:
Engineering::Electrical and electronic engineering
Modular Multilevel Converter
Fault Tolerance
Online Access:https://hdl.handle.net/10356/153359
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Institution: Nanyang Technological University
Language: English
Description
Summary:In a modular multilevel converter (MMC) based battery energy storage system (BESS), a fault tolerant design ensures uninterrupted operation of the MMC when a given number of submodules (SMs) have faulty batteries or no batteries. This paper quantitatively investigates the fault tolerance improvement in MMC-based BESSs with different numbers of redundant SMs, which is commonly practiced to improve the fault tolerance in modular converter topologies. Simulation results are obtained to verify the proposed analysis. The presented analysis provides guidelines for designers to choose an appropriate number of redundant SMs to achieve a desired fault tolerance.

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