WIRE CONNECTION CHANGING DEVICE OF ARMATURE COIL, DRIVING DEVICE, AND POWER GENERATING DEVICE

摘要

PROBLEM TO BE SOLVED: To protect a circuit from dielectric breakdown by assuring a current path at always when changing wire connection of the coil constituting an armature coil according to the rotational speed of a motor or generator, to suppress occurrence of overvoltage.

SOLUTION: There are provided an armature coil of at least one phase composed of a plurality of unit coils 1a, 1b, 1c, 1d, and a wire connection changing part for changing wire connection of the unit coils 1a, 1b, 1c, 1d according to the rotational speed of a motor or generator. The wire connection changing part establishes wire connection after changing, and then cuts the wire connection before change.

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