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Helical armature

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A helical armature is a form of air-gap electric motor or generator armature wound in a helical fashion as opposed to a conventional random or orthocyclic winding. Such a design is of interest in superconducting motor and generation technology, though comparatively little research has been done on the subject. An important and remarkable feature of helical armature windings is that they have no end windings. Moreover, as each conductor follows a helical path of constant pitch, helical windings are not easily divided into active and end regions. An important downside, though, is that such armatures provide poor winding factors.