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The torque and unbalanced magnetic forces in a small flux concentrating permanent magnet transverse flux machine (FCPM-TFM) in segmented compact structure, which are the resultants of the tangential; axial and normal magnetic forces, respectively, are in general influenced by pole-teeth-winding configuration. The paper calculates the torque and unbalanced magnetic forces using finite element (FE-)...
Transverse flux machine (TFM) useful for in-wheel motor applications is presented. This transverse flux permanent magnet motor is designed to achieve high torque-to-weight ratio and is suitable for direct-drive wheel applications. As in conventional TFM, the phases are located under each other, which will increase the axial length of the machine. The idea of this design is to reduce the axial length...
This paper investigates the existing structures of transverse flux machines (TFMs) that can be constructed as an outer rotor in-wheel motor which is suitable for low speed applications. As the main characteristic of TFM is providing the best torque density at low speeds, it would be a suitable choice and having a great future for low speed mobile platforms. Different structures of TFM are re-designed...
In this paper the torque density of transverse flux machines is investigated against the flux density inside the active parts with analytical calculations and FEM simulations. Especially saturation effects, which reduce the flux linkage with the coil, and core losses, are considered for both, the flux concentrating setup and the surface mounted magnets topology. The calculations are verified by measurements...
This paper presents an analytical model of the electromechanical behaviour of transverse flux machines in flat magnet configuration. The model is based on the distribution of the magnetic field inside the machine, which will be given special focus, due to its significance in calculating the electric torque by means of the magnetic coenergy.
This paper presents a control based upon optimised current waveforms with switching on current harmonics to achieve an accurate position and speed control with reduced ripples in torque shape for a transverse flux motor. The approaches are verified by measured results at a two phase prototype of a magnet exicited transverse flux motor.
This paper deals with an innovative method to minimise the cogging torque of transverse flux motors in direct drive applications to achieve an accurate speed control. These approaches are based on calculated optimised current wave forms to realise a torque control as a basis for the speed control
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