NDLI: Study of faulty scenarios for a fault-tolerant multi-inverter-fed linear permanent magnet motor with coil short-circuit or inverter trip

Content Provider	IEEE Xplore Digital Library
Author	Bruzzese, C. Tessarolo, A. Mezzarobba, M. Bortolozzi, M. Zito, D. Mazzuca, T. Piva, L.
Copyright Year	2014
Description	Author affiliation: Dept. of Astronaut., Electr. & Energy Eng., Univ. of Rome- Sapienza, Rome, Italy (Bruzzese, C.; Zito, D.) \|\| Dept. of Eng. & Archit., Univ. of Trieste, Trieste, Italy (Tessarolo, A.; Mezzarobba, M.; Bortolozzi, M.) \|\| Italian Minist. of Defence, Rome, Italy (Mazzuca, T.; Piva, L.)
Abstract	A fault-tolerant machine used for safety-critical tasks must a) guarantee at least a reduced-performance operation in case of partial machine fault and b) guarantee avoidance of drive mechanical jam/stall in case of total machine fault, to allow for the intervention of the back-up systems. Classical hydrostatic transmissions used on board ships for critical tasks such as rudder and stabilizing fin steering gears fulfill both the requirements a), b) above, but recent proposals for substitution with full-electric drives (rotary motors coupled with multistage reduction gears) usually do not. Especially the requirement b) needs particular attention and increased complexity when dealing with geared drives. This paper proposes a linear permanent-magnet direct drive fulfilling both the requirements above, for (but not limited to) rudder/fin steering gears. The absence of gears grants the requirement b), whereas the full-modular structure satisfies a), with independently fed stator modules and multiple inverters. This paper addresses some fault scenarios including electrical failures, in the machine winding (short-circuited coils) and in the inverters (trip of one or more units). The performance degradation is studied and assessed for the cases considered by both simulations and measurements on a prototype.
Sponsorship	IEEE
Starting Page	2387
Ending Page	2393
File Size	1752465
Page Count	7
File Format	PDF
ISBN	9781479943890
DOI	10.1109/ICELMACH.2014.6960520
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-02
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coils Force measurement Force Inverters Circuit faults inverter trip Forging Fault tolerance linear actuator service continuity Stators permanent magnet motor short-circuit
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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