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Former-Wound Armature

  • Definition:
    • An armature where the conductors are thinner wires that are wound onto a form or former to create the armature winding.
  • Characteristics:
    • Thin Wire Conductors: The conductors are thin wires wound around a cylindrical or other shaped former.
    • Flexibility: The thin wires allow for flexibility during winding and shaping.
    • Insertion: After winding, the former-wound conductors are inserted into slots or set in place within the armature core.
    • Connection: Connections between the wires are made to complete the armature winding circuit.
  • Applications:
    • Standard Motors: Commonly used in smaller to medium-sized electric motors and generators where space and weight considerations are important.

Comparison:

  • Bar-Wound vs. Former-Wound:
    • Conductor Size: Bar-wound armatures use larger sectioned conductors (bars) compared to the thin wires of former-wound armatures.
    • Mechanical Strength: Bar-wound armatures offer greater mechanical strength and durability due to the larger and fixed conductors.
    • Current Handling: Bar-wound armatures are preferred for applications requiring higher current handling capabilities.
    • Complexity: Bar-wound armatures may be more complex to manufacture and assemble due to the larger conductor sizes and insulation requirements.
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