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Efficiency Evaluation of Five-Phase Outer-Rotor Fault-Tolerant BLDC Drives under Healthy and Open-Circuit Faulty ConditionsARASHLOO, R. S. , SALEHIFAR, M. , SAAVEDRA, H. , ROMERAL MARTINEZ, J. L.
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motor drives, brushless motors, permanent magnet motors, variable speed drives, energy conservation
power(17), permanent(12), magnet(12), motor(10), fault(10), motors(9), phase(8), electronics(8), drives(8), control(7)
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About this article
Date of Publication: 2014-05-31
Volume 14, Issue 2, Year 2014, On page(s): 145 - 152
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2014.02023
Web of Science Accession Number: 000340868100023
SCOPUS ID: 84901853732
Fault tolerant motor drives are an interesting subject for many applications such as automotive industries and wind power generation. Among different configurations of these systems, five-phase BLDC drives are gaining more importance which is because of their compactness and high efficiency. Due to replacement of field windings by permanent magnets in their rotor structure, the main sources of power losses in these drives are iron (core) losses, copper (winding) losses, and inverter unit (semiconductor) losses. Although low amplitude of power losses in five-phase BLDC drives is an important aspect for many applications, but their efficiency under faulty conditions is not considered in previous studies. In this paper, the efficiency of an outer-rotor five phase BLDC drive is evaluated under normal and different faulty conditions. Open-circuit fault is considered for one, two adjacent and two non-adjacent faulty phases. Iron core losses are calculated via FEM simulations in Flux-Cedrat software, and moreover, inverter losses and winding copper losses are simulated in MATLAB environment. Experimental evaluations are conducted to evaluate the efficiency of the entire BLDC drive which verifies the theoretical developments.
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 Permanent magnet Synchronous Actuator design for SBW direction, Ben Mehrez, Rached, Amraoui, Lilia El, 2015 World Symposium on Mechatronics Engineering & Applied Physics (WSMEAP), ISBN 978-1-4673-6583-3, 2015.
Digital Object Identifier: 10.1109/WSMEAP.2015.7338198 [CrossRef]
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
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