Electricity: motive power systems – Reciprocating or oscillating motor – Energizing winding circuit control
Patent
1989-01-18
1990-09-25
Ro, Bentsu
Electricity: motive power systems
Reciprocating or oscillating motor
Energizing winding circuit control
310102R, 322 90, 290 46, H02K 2352, F02N 1104
Patent
active
049595954
ABSTRACT:
A starter-generator of an automobile is disclosed which comprises a stationary field coil wound and disposed coaxially around the rotational axis. The rotor comprises a pair of field pole forming members on which circumferentially alternating field poles are excited by the magnetic flux generated by the field coil. Armature coils connected in Y-connection are disposed around the rotor, and the terminals of the armature coils are coupled to the inputs of a three-phase rectifier circuit (used when the starter-generator acts as a starting motor) and the outputs of a armature current switching circuit (used when the starter-generator acts as a charging generator) which controls the flow of current through the armature coils so that a rotating magnetic field is formed. The starter-generator further comprises a pair of auxiliary coils which are wound and disposed around the rotational axis at both sides of the armature in the neighborhood of the rotor. A current is supplied to these auxiliary coils in a direction opposite to that of the current supplied to the field coil. The current supplied to the auxiliary coils are regulated in response to the magnetic flux density detected by Hall elements positioned near the rotational axis, to minimize the flux in the neighborhood of the rotational axis.
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Mitsubishi Denki & Kabushiki Kaisha
Ro Bentsu
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