A Solid-State Circuit Breaker Based on Coupled-Inductor for Battery Energy Storage System

In a battery energy storage system (BESS), short-current protection is critical and need to be designed carefully to enhance the system's safety and reliability. Additionally, the switching operation of a power converter often induces significant voltage fluctuations, necessitating the use of s...

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Bibliographic Details
Published in:IEEE access 2024, Vol.12, p.180903-180912
Main Authors: Lo, Kuo-Yuan, Huang, Ting-Wei, Liu, Kuo-Hsiang
Format: Article
Language:English
Subjects:
Capacitors
Circuit breaker
Circuit breakers
Circuit faults
Costs
coupled-inductor filter
Electric potential
Electrolytic capacitors
Energy storage
Equivalent circuits
Inductors
Power converters
Protection
Ripples
Short circuit currents
short-circuit current
Solid state
Solid state circuits
Structural reliability
Switches
Topology
Voltage
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Summary:In a battery energy storage system (BESS), short-current protection is critical and need to be designed carefully to enhance the system's safety and reliability. Additionally, the switching operation of a power converter often induces significant voltage fluctuations, necessitating the use of sizable electrolytic capacitors (EC) to mitigate them. However, the substantial capacitance of ECs can lead to a substantial increase in DC-bus fault currents during short-circuit events. To address this concern and bolster the dependability of BESS applications, the implementation of a fast circuit breaker becomes crucial. In light of the paramount importance of a circuit breaker, this paper presents and explores a novel solid-state circuit breaker (SSCB) based on a coupled-inductor. The proposed SSCB can exhibit the capacity to mitigate voltage fluctuations and short-circuit current levels. Subsequently, the proposed SSCB can attain structural simplicity, reduced voltage ripple, and high reliability. Finally, the simulation and experimental investigations can verify the improved current handling, disconnection, and reduced voltage ripple capabilities offered by the proposed SSCB.
ISSN:2169-3536
DOI:10.1109/ACCESS.2024.3510403