Fault-Tolerant Operation of a Battery-Energy-Storage System Based on a Multilevel Cascade PWM Converter With Star Configuration

This paper focuses on fault-tolerant control for a battery-energy-storage system based on a multilevel cascade pulsewidth-modulation (PWM) converter with star configuration. During the occurrence of a single-converter-cell or single-battery-unit fault, the fault-tolerant control enables continuous o...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2010-09, Vol.25 (9), p.2386-2396
Main Authors: Maharjan, Laxman, Yamagishi, Tsukasa, Akagi, Hirofumi, Asakura, Jun
Format: Article
Language:English
Subjects:
Applied sciences
Availability
Batteries
Battery
Battery-energy-storage system (BESS)
Cascade control
cascade converters
Circuit properties
Control systems
Converters
Direct energy conversion and energy accumulation
Electric batteries
Electric power
Electric power plants
Electric, optical and optoelectronic circuits
Electrical engineering. Electrical power engineering
Electrical power engineering
Electricity
Electronic circuits
Electronics
Energy accumulation
Energy storage
Exact sciences and technology
Fault tolerance
Fault tolerant systems
fault-tolerant control
Maintenance
Miscellaneous
Multilevel
neutral shift
Power electronics, power supplies
Pulse duration modulation
Pulse width modulation
Pulse width modulation converters
Reliability
Signal convertors
Stars
state-of-charge (SOC) balancing
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Summary:This paper focuses on fault-tolerant control for a battery-energy-storage system based on a multilevel cascade pulsewidth-modulation (PWM) converter with star configuration. During the occurrence of a single-converter-cell or single-battery-unit fault, the fault-tolerant control enables continuous operation and maintains state-of-charge balancing of the remaining healthy battery units. This enhances both system reliability and availability. A 200-V, 10-kW, 3.6-kW·h laboratory system combining a three-phase cascade PWM converter with nine nickel-metal-hydride battery units is designed, constructed, and tested to verify the validity and effectiveness of the proposed fault-tolerant control.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2010.2047407