Electrical machines: Turn-to-turn capacitance in formed windings with rectangular cross-section wire

Calculation of turn-to-turn capacitance (Ctt) in electrical machines (EMs) with formed windings with rectangular cross-section wire is presented. Three calculation methods are used for the calculation of Ctt in case of rectangular conductors - finite element (FE) method and two previously published analytical methods are applied. Three different sizes of wires are used for this calculation. Further, every model of the wire is considered as an ideal rectangle in the first case, i.e. without the corner radii, and in the second case as it exists in reality, including the corner radii.