The fault tolerant operation of the drive is a critical requirement in medium voltage high power applications. In these drives, at an event of converter failure, a continuous operation with reduced power rating is preferred over a complete shutdown of the system. Hence, multi-phase machines are widely used for such applications since they offer inherent fault tolerance operation. This paper proposes a new fault tolerance and on-the-fly re-connection algorithm for an LCI and VSI fed multi-phase induction machine drive. The proposed method offers continuous operation of the drive with half the rated power when an LCI is faulty. The proposed algorithm is experimentally validated on a 75 kW multi-phase induction machine drive and the results are presented. © 2022 IEEE.

Jose Titus

Department of Electrical Engineering

P. Harikrishnan

P. Pandey

K. Hatua

Indian Institute of Technology Hyderabad (IITH) is a premier institute of science and technology established in 2008. IITH has been consistently ranked in the&nbsp;<a href="https://iith.ac.in/reports/" rel="noopener noreferrer">top 10 institutes</a>&nbsp;in India for Engineering&nbsp;<a href="https://www.nirfindia.org/2021/EngineeringRanking.html" rel="noopener noreferrer" target="_blank">according to NIRF</a>&nbsp;making it one of the most coveted schools for science and technology in the country.

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Journal	2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022
Publisher	Institute of Electrical and Electronics Engineers Inc.