US PATENT SUBCLASS 322 / 59
.~ With excitation winding and/or circuit control

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


322 /   HD   ELECTRICITY: SINGLE GENERATOR SYSTEMS

44  DF  GENERATOR CONTROL {11}
59.~ With excitation winding and/or circuit control {11}
60  DF  .~.~> Substitute or auxiliary starting source of excitation
61  DF  .~.~> Alternating current excitation
62  DF  .~.~> Plural sets of poles type of generator
63  DF  .~.~> Plural excitation windings {3}
67  DF  .~.~> Series-wound generator
68  DF  .~.~> Short circuiting of field winding
69  DF  .~.~> Circuit interruption {1}
71  DF  .~.~> Variable length field winding
72  DF  .~.~> Control by electric space discharge {2}
75  DF  .~.~> Control by circuit impedance {3}
86  DF  .~.~> Plural sources of excitation voltage {2}

DEFINITION

Classification: 322/59

(under subclass 44) Subject matter wherein the generator is controlled by controlling an excitation winding or an excitation winding circuit.

SEE OR SEARCH THIS CLASS, SUBCLASS:

6, for generator systems within the class definition which are provided with means to control the polarity of the generator by controlling the excitation of the generator.

45, for this subject matter where the generator is controlled by a plurality of diverse controls (e.g. controlling field structure and field excitation).

46, for generator control systems under subclass 44 where the generator field structure combines permanent magnet and wound field structure.

48, for generator control systems under subclass 44 where the generator is an acyclic or homopolar generator with means to control an excitation winding or an excitation winding circuit.

49+, for generator control systems under subclass 44 where the generator is controlled by controlling the structure of the parts which form the magnetic circuit of the generator. 53, for generator control systems under subclass 44 where the generator has an odd number of brushes (3rd brush type) including such systems where the generator has a field winding connected between the auxiliary (3rd) brush and one of the load brushes.

54+, for generator control systems under subclass 44 where the generator control includes means to adjust the current collection mechanism (brushes).

57, for generator control systems under subclass 44 where the generator control includes means for saturating at least a portion of the generator structure by means of a winding which is in noninductive relationship to the armature and field winding.

58, for generator control systems under subclass 44 where the system includes means (such as a filter) for eliminating, suppressing or minimizing undesired frequencies.

SEE OR SEARCH CLASS

318, Electricity: Motive Power Systems, and

521+, for motor field circuit control, subclasses 710+ for synchronous motor field excitation removal; subclasses 712+ for synchronous motor field excitation application; subclasses 716+ for synchronous motor field circuits.

320, Electricity: Battery or Capacitor Charging or Discharging, appropriate subclasses, particularly

123, for a battery or capacitor charging or discharging system including a generator.

330, Amplifiers, particularly

58, for amplifier systems whose active element is a rotating dynamoelectric machine. 388, Electricity: Motor Control Systems,

843, and 849+ for field circuit acceleration control systems.