Development, Design, and Analysis of a Dual-Consequent-Pole Transverse Flux Linear Machine for Direct-Drive Applications

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Abstract
Transverse flux machines (TFMs) can achieve high force density by the reducing the pole pitch because of the decoupling of electric and magnetic loadings. But the main flux linkage interlinking with the armature coils will decrease as the pole pitch reducing, resulting in motor performance degradation. Unlike the approaches adopted by many literatures to suppress the leakage flux, this paper proposes a novel dual-consequent-pole transverse flux linear machine by adopting dual-PM structure. Without increasing the occupied volume, the coil flux linkage is enhanced and the force density can be further improved. At first, the basic configuration and operation principle are introduced at first. Then the leading parameter influence on the force density are investigated. The electromagnetic performance of the proposed machine is investigated by three-dimensional finite element analysis and is compared with its counterparts. The field distribution, winding flux linkage, back EMF, detent force and thrust force are emphasized as well as the efficiency and power factor. Finally, a prototype machine is constructed and tested to validate the theoretical analysis.
Funding Information
  • National Natural Science Foundation of China (51177023, 51607044)
  • Specialized Research Fund for the Doctoral Program of Higher Education of China (20132302110009)

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