000010662 001__ 10662
000010662 005__ 20240531171549.0
000010662 0247_ $$2doi$$a10.24868/10662
000010662 245__ $$aPermanent Magnet Excitation of a Two and Four Pole Pair Dual Wound Machine
000010662 269__ $$a2022-09-02
000010662 336__ $$aConference Proceedings
000010662 520__ $$aThe practicality of implementing, and the advantages that can arise from, a Dual Wound Machine (two
segregated windings on one generator driven by a single prime mover) have been previously reported.
It has been demonstrated that two separate machines mounted in a common frame offer no advantages
over a standard tandem arrangement and the presence of two sets of end windings in the central area
imposes volumetric overheads. By comparison Dual Windings offer a more compact arrangement with
no volume overheads. This paper considers the use of permanent magnets to provide the required 2 and
4 pole excitation fields for a generator with dual two and four pole windings. Electrical and magnetic
isolation is desirable in both sets of windings; electrical isolation is relatively straight-forward but
magnetic isolation is more complex. Magnetic isolation is gained by ensuring that the two windings’
MMF have no space harmonics in common, including the fundamentals, using techniques established in
the earlier papers. The use of a permanent magnet excitation system is considered where the basic
concept is to arrange the magnets in two radially separated layers in the normal way, but where the
magnets are of opposing polarity they are removed completely. The harmonic analysis of the resulting
field is established using an analytical technique and this is corroborated through two-dimensional finite
element flux analysis, which is also used to establish the machine performance.
000010662 542__ $$fCC-BY-NC-ND
000010662 6531_ $$aGenerator
000010662 6531_ $$aDual Wound
000010662 6531_ $$aPermanent Magnet
000010662 6531_ $$aExcitation
000010662 7001_ $$aEastham, JF$$uUniversity of Bath
000010662 7001_ $$aYin, B$$uUniversity of Bath
000010662 7001_ $$aZeng, X$$uUniversity of Bath
000010662 7001_ $$aHodge, C$$uBMT Defence & Security
000010662 7001_ $$aPei, X$$uUniversity of Bath
000010662 773__ $$tConference Proceedings of INEC
000010662 773__ $$jINEC 2022
000010662 85641 $$uhttps://www.imarest.org/events/category/categories/imarest-event/international-naval-engineering-conference-and-exhibition-2022$$yConference website
000010662 8564_ $$90753e0d2-0fc9-4f37-b899-6a6f19b36028$$s998683$$uhttps://library.imarest.org/record/10662/files/INEC_2022_paper_10%20%281%29.pdf
000010662 980__ $$aConference Proceedings