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Title: A Fault-Tolerant Hybrid Cascaded H-Bridge Topology
This paper presents the fault-tolerant operation for a cascaded H-bridge (CHB) inverter. The added features ensure reliable and robust operation in the event of a fault. The proposed strategy uses an additional cross-coupled CHB (X-CHB) unit in companion with the existing CHB to support the output voltage and ensure continuity of operation in case of an open/short circuit fault. The operation of the proposed X-CHB inverter is described in detail. Simulation and experimental verification of the proposed concept is demonstrated using a seven-level CHB. Both simulation and experimental results validate the fault-tolerant operation of the CHB for a battery energy storage system (BESS) in case of switch faults such as open/short-circuit switch faults or dc-source or battery failure.  more » « less
Award ID(s):
1747757
PAR ID:
10224189
Author(s) / Creator(s):
; ;
Date Published:
Journal Name:
2019 IEEE Energy Conversion Congress and Exposition (ECCE)
Page Range / eLocation ID:
6376 to 6381
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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