Transverse flux machines are basically high-pole synchronous machines which can operate at high torque/power densities at low speeds. In this type of the machines, the magnetic flux plane is perpendicular to the rotation plane of the machine and for this reason; the machine is called transverse flux. Transverse flux machines (TFMs) due to high torque capability are suitable for the applications such as direct-drive wind power generations, submarine and ship propulsions, and elevators. However, these types of machines have some drawbacks and limitations including low power factors and high torque ripples. Because of perpendicular flux paths in a TFM, analysis of this machine should be performed in a three dimensional (3D) space. Analyses approaches for TFMs are justify; LINE-HEIGHT: 150%; MARGIN: 0cm 0cm 0pt; unicode-bidi: embed; DIRECTION: ltr" This thesis develops an improved magnetic equivalent circuit method for modeling and analysis of transverse flux permanent magnet machines. The significant features of the proposed model are accounting the saturation phenomenon of ferromagnetic cores and considering the leakage flux in the model of the machine. The proposed modeling approach uses the notion of flux tubes to represent flux paths of the machine including air-gap, stator/rotor ferromagnetic materials, and the permanent magnet of the rotor. Then, the magnetic equivalent circuit of the machine is established based on calculation of the permeance of the flux tubes within the machine. To improve the accuracy of the model, the shape of flux tubes are selected corresponding to the distribution of the flux paths within the machine. The proposed model is useful for the design and performance evaluation of the transverse flux machine. To evaluate the model, an improved magnetic equivalent circuit has been developed for a justify; LINE-HEIGHT: 150%; MARGIN: 0cm 0cm 0pt; unicode-bidi: embed; DIRECTION: ltr" Keyword: High Torque density Machine, Megnetic Equivalent circuit, Permanent Magnet Synchronous Machine, Transverse Flux Machine
