US PATENT SUBCLASS 322 / 63
.~.~ Plural excitation windings

Current as of: June, 1999
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322 /   HD   ELECTRICITY: SINGLE GENERATOR SYSTEMS

44  DF  GENERATOR CONTROL {11}
59  DF  .~ With excitation winding and/or circuit control {11}
63.~.~ Plural excitation windings {3}
64  DF  .~.~.~> Differentially related
65  DF  .~.~.~> Interpole windings
66  DF  .~.~.~> Compensating windings

DEFINITION

Classification: 322/63

(under subclass 59) Subject matter wherein the generator is provided with more than one field winding.

(1) Note. A plurality of windings connected in series or parallel to produce only one magnetic field is considered to be only a single field winding. To be classified in this or the indented subclasses, the generator should have a plurality of windings connected in circuit to produce a plurality of different magnetic fields. One of the windings may produce a magnetic field which opposes the field produced by another winding in indented subclass 64.

SEE OR SEARCH THIS CLASS, SUBCLASS:

57, for generator systems under subclass 44, where the generator is provided with a winding for saturating at least a portion of the generator magnetic structure without introducing a magneto-motive force which either aids or opposes the magneto-motive force produced by the field or armature winding.

62, for generator systems under subclass 59, where the field windings or excitation circuits are designed so that the generator may be operated as either a generator having one number of sets of poles or as a generator having another and different number of sets of poles (i.e., either an 8-pole or a 4-pole generator).

SEE OR SEARCH CLASS

310, Electric Generator or Motor Structure, 184+, for dynamoelectric machine structure having a plurality of field or excitation windings.

315, Electric Lamp and Discharge Devices: Systems,

304+, for electric lamp and gas or vapor discharge device systems having the supply generator supplied with a plurality of fields for regulating the system.

318, Electricity: Motive Power Systems,

297+, for motor reversing systems having plural field windings, and subclasses 523+, for motor control systems having plural field windings, subclasses 700+ for synchronous motor systems having plural field windings, particularly subclasses 716+ for field circuits of synchronous motors.

320, Electricity: Battery and Condenser Charging and Discharging,

65, for generation systems for battery charging having plural field windings.

388, Electricity: Motor Control Systems,

801+, 803+ and 826+ for running-speed control systems for motors with more than one field winding, and 843 and 849+ for acceleration control systems for motors with more than one field winding.