3/20/2019 Windings Definition of Windings | Chegg.com Winding is the form of coil which made with conductor or wire. When the current flows in a coil, magnetic flux will be produced which leads to establishment of magnetic field. The windings play a significant role to create the magnetic field in electrical machines For example, consider an alternator (AC generator), in which windings are arranged in different slots to produce sinusoidal or alternating emf. These windings are mainly classified as concentrated and distributed windings. Concentrated winding: In these windings, the coils are not distributed rather than they are concentrated at one particular slot. That is, the armature poles are equals to the number of armature slots Figure 1 is the single layer concentrated winding. Figure 2 is the double layer concentrated windings. The concentrated winding can induce maximum emf, but the nature emf is not exactly sinusoidal. Distributed winding: The distributed winding is the distribution of conductors each slot equally. The conductors are placed under several slots. The distributed winding reduces the armature reaction and helps in better cooling. In these windings, the induced emf is less, but it is more sinusoidal in nature than concentrated windings. Windings are also classified as Lap and wave windings. Lap Winding: Figure 3 is the lap winding. In this winding, the conductors per pair of poles are in series connection. The armature conductor parallel paths are equals to the number of poles. https://www.chegg.com/homework-help/definitions/windings-4 1/2 3/20/2019 Definition of Windings | Chegg.com Wave winding: Figure 4 is the wave winding. The winding is in the form of continuous wave. In this, both front and back pitches are equal to the number of conductors in each pole. In wave winding, the number of armature paths is always equal to two. For optimal condition of machine, the double layer, distributed, and fractional composite winding is preferred. https://www.chegg.com/homework-help/definitions/windings-4 2/2