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

2010 ◽  
Vol 25 (9) ◽  
pp. 2386-2396 ◽  
Author(s):  
Laxman Maharjan ◽  
Tsukasa Yamagishi ◽  
Hirofumi Akagi ◽  
Jun Asakura
Keyword(s):  
Energy Storage ◽  
Fault Tolerant ◽  
Storage System ◽  
Energy Storage System ◽  
Battery Energy Storage System ◽  
Pwm Converter ◽  
Battery Energy Storage ◽  
Battery Energy ◽  
Star Configuration

scholarly journals Fault-Tolerant Control in a Peak-Power Reduction System of a Traction Substation with Multi-String Battery Energy Storage System

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4565
Author(s):  
Marcin Szott ◽  
Marcin Jarnut ◽  
Jacek Kaniewski ◽  
Łukasz Pilimon ◽  
Szymon Wermiński
Keyword(s):  
Energy Storage ◽  
Peak Power ◽  
Fault Tolerant ◽  
Storage System ◽  
Energy Storage System ◽  
Power Reduction ◽  
Battery Energy Storage System ◽  
Battery Energy Storage ◽  
Traction Substation ◽  
Battery Energy

This paper introduces the concept of fault-tolerant control (FTC) of a multi-string battery energy storage system (BESS) in the dynamic reduction system of a traction substation load (DROPT). The major task of such a system is to reduce the maximum demand for contracted peak power, averaged for 15 min. The proposed concept, based on a multi-task control algorithm, takes into account: a three-threshold power limitation of the traction substation, two-level reduction of available power of a BESS and a multi-string structure of a BESS. It ensures the continuity of the maximum peak power demand at the contracted level even in the case of damage or disconnection of at least one chain of cells of the battery energy storage (BES) or at least one converter of the power conversion system (PCS). The proposed control strategy has been tested in a model of the system for dynamic reduction of traction substation load with a rated power of 5.5 MW. Two different BESS implementations have been proposed and several possible cases of failure of operations have been investigated. The simulation results have shown that the implementation of a multi-string BESS and an appropriate control algorithm (FTC) may allow for maintenance of the major assumption of DROPT, which is demanded power reduction (from 3.1 MW to 0.75 MW), even with a reduction of the BESS available power by at least 25% and more in the even in fault cases.

scholarly journals A Battery Energy Storage System Based On A Multilevel Cascade Pwm Converter

2009 ◽  
Vol 14 (4) ◽  
pp. 221-231
Author(s):  
Hirofumi Akagi ◽  
Laxman Maharjan
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Battery Energy Storage System ◽  
Pwm Converter ◽  
Battery Energy Storage ◽  
Battery Energy
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