Single Layer Winding Of Three Phase Induction （三相单层绕组的感应）.pdfVIP

The International Journal Of Engineering And Science (IJES) ||Volume||2 ||Issue|| 4 ||Pages|| 08-13||2013|| ISSN(e): 2319 – 1813 ISSN(p): 2319 – 1805 Single Layer Winding Of Three Phase Induction Motor Enesi Asizehi Yahaya 1Department of Electrical and Electronics Engineering. Federal University of Technology, PMB 65, Minna. Nigeria Abstract The winding layout and diagrams of single or three phase induction motors of single layer windings have been a problem to Engineers and Technicians because of the different types of windings and lack of basic knowledge on the rewinding techniques. This paper presents the basic knowledge, simplified analytical methods and winding layout and diagrams of single layer windings. Keywords: Winding layout, single layer winding, induction motors, rewinding technique, three phase motor Date Of Submission: 23 March 2013 Date Of Publication: 05,May.2013 I. INTRODUCTION When each side of a coil occupies a slot completely without any other coil lying on top of it and the number of coils equals half the number of slots, the winding is known as single layer winding [1]. Concentric winding or chain winding types are common and in this type of winding, short-pitched coils cannot be used. The laying of concentrated winding depends on the coil span and the number of slots per pole per phase as in [2] and [3]. The concentric winding can be in form of unbifurcated (half-coiled) or bifurcated (whole-coiled) type. In unbifurcated concentric windings, the coils comprising a pair of pole phase groups under adjacent poles are concentric. The overhangs of these windings are usually arranged in two or three separate tiers or planes. This arrangement