Analytical design and analysis procedure for a transverse flux machine

Abstract

A transverse flux machine (TFM) offers a higher specific torque and power density than a conventional radial flux machine, though at a cost of a poorer power factor. This paper provides an analytical approach to dimension an application-specific TFM and analyse its performance for first order calculations. Important features of TFMs are also outlined to facilitate an understanding of its operation and design. The design is explained with reference to an arbitrarily chosen application; a TFM wind generator. Only a surface mounted, single sided, outer rotor TFM generator design is treated. The method can however be equally applied to other types of TFMs, with proper adjustments of the analytical models.

Design and analysis of a bidirectional cross-linking transverse flux permanent magnet synchronous motor

“…In (8), D a is the rotor diameter. A is the electrical load that is the number of ampere conductors per circumferential unit length of the stator core, i.e.…”

“…Until now, a variety of topologies of the transverse flux motor have been proposed [2]- [4] and the transverse flux configuration has been applied in the electromagnetic launchers (EMLs) system [5]- [7]. According to different placement of permanent magnets, TFPM can be divided into surface mounted motor, flux-concentrated motor and reluctance motor [8]- [11]. In [12]- [13], Weh's prototype has a Ushaped stator core, in which the distance of adjacent stator cores are twice the pole pitch, thus half of the permanent magnets are not in effective working condition with a large rotor magnetic flux leakage.…”

Influence of the Permanent Magnet Magnetization Length on the Performance of a Tubular Transverse Flux Permanent Magnet Linear Machine Used for Electromagnetic Launch

“…Referring to the choice of the PM magnetization length for transverse flux machines, in literature, the most common idea is to prechoose a desired value of the air-gap flux density and, then, to figure out the needed length according to Ampere's Law [7]- [9]. Unfortunately, few studies take a further step to investigate its influence on the performance of transverse flux machines.…”

Transverse Flux Linear Machine with High Thrust for Direct Drive Applications

“…Relative to other motors, they have a number of useful features [2][3][4]. Most importantly, there is no competition between the space requirement of the flux carrying core irons and the space occupied by armature windings.…”