Five-phase version of 12slots/8poles three-phase Synchronous Machine for Marine-propulsion
Communication avec acte
Date
2014Abstract
Multiphase machines are widely used in electric marine propulsion especially because of their fault-tolerance which allows to guarantee the propulsion even if a fault occurs in the electrical system. Besides, the 12 slots/8 poles three-phase machine (12/8/3 machine) with fractional slot concentrated windings is known for its low level of permanent Magnet eddy currents losses, making it adequate for compact high speeds applications. Since this interesting property is due to a 0.5 value for the number of slots per pole and per phase (spp=0.5), then the paper examines a five-phase 20 slots/8poles (20/8/5 machine) fault tolerant machine whose spp=0.5. Using an analytical model, the copper losses and an estimation of the magnet losses for the two machines are presented and a comparison is done between the two machines. The results show that the 20/8/5 has more Joules losses than 12/8/3 but lower magnet eddy current losses. Since the Joules losses can be easily evacuated more than the magnet losses, the 20/8/5 machine can be considered as the fault tolerant version of the 12/8/3 machine. Finally, the overall losses for the two machines are computed, the losses in 20/8/5 machine are less than in 12/8/3 machine. A finite element calculation is carried out in order to validate the analytical predictions.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Communication avec acteSCUILLER, Franck; ZAHR, Hussein; SEMAIL, Eric (2017)This paper addresses the design of a bi-harmonic five-phase Surface-mounted Permanent Magnet (SPM) machine for marine propulsion. The bi-harmonic characteristic results from the particular 20 slots-8 poles configuration ...
-
Communication avec acteZAHR, Hussein; SEMAIL, Eric; ASLAN, Bassel; SCUILLER, Franck (IEEE, 2016)The paper studies the impact of first and third current-harmonic repartition in a five-phase Permanent Magnet machine whose Electromotive Forces (emfs) have first and third harmonics of the same amplitude. With a five-phase ...
-
Article dans une revue avec comité de lectureSCUILLER, Franck; BECKER, Florent; ZAHR, Hussein; SEMAIL, Eric (Institute of Electrical and Electronics Engineers, 2020)If multi-phase machines equipped with tooth concentrated winding with half a slot per pole and per phase offer interesting characteristics (simplified manufacturing, no space subharmonic, fault-tolerant ability), their low ...
-
Communication avec acteMEKAHLIA, Abdelhak; SEMAIL, Eric; SCUILLER, Franck; ZAHR, Hussein (IEEE, 2020)Multiphase induction machines are advantageous regarding speed range extension in comparison with three-phase induction machines. This paper investigates how to choose the connection between stator phases for a multiphase ...
-
Article dans une revue avec comité de lectureMEKAHLIA, Abdelhak; SEMAIL, Eric; SCUILLER, Franck; ZAHR, Hussein (MDPI, 2020)For three-phase induction machines supplied by sinusoidal current, it is usual to model the n-bar squirrel-cage by an equivalent two-phase circuit. For a multiphase induction machine which can be supplied with different ...