US PATENT SUBCLASS 363 / 174
.~.~ Dynamoelectric machine

Current as of: June, 1999
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363 /   HD   ELECTRIC POWER CONVERSION SYSTEMS

157  DF  FREQUENCY CONVERSION (f1-f2) WITHOUT INTERMEDIATE CONVERSION TO D.C. {7}
170  DF  .~ By induction-type converter {3}
174.~.~ Dynamoelectric machine {2}
175  DF  .~.~.~> Motor generator type
176  DF  .~.~.~> Including induction motor

DEFINITION

Classification: 363/174

Dynamoelectric machine:

(under subclass 170) Subject matter wherein the converter includes a dynamoelectric machine.

(1) Note. See the class definition, Glossary, for a definition of dynamoelectric machine.

(2) Note. Since many of the problems of operation and control of dynamoelectric machine converters are analogous to the problems of operation and control of motors and generators (e.g., starting, speed control, excitation control, etc.), it is noted that analogous pertinent art is classified in the motor and generator classes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

102+, for current conversion systems having a dynamoelectric converter.

150, for phase conversion systems having a dynamoelectric converter.

SEE OR SEARCH CLASS

310, Electrical Generator or Motor Structure, 10+, for miscellaneous dynamoelectric machine structure, particularly, subclass 160 for frequency converter structure.

318, Electricity: Motive Power Systems, appropriate subclasses for electric motor systems.

322, Electricity: Single Generator Systems, appropriate subclasses for electric generator systems.

323, Electricity: Power Supply or Regulation Systems,

201, 204 for control systems involving dynamoelectric machines.