Soft-commutated direct current motor
Abstract
A method and circuit is disclosed for soft-commutation of a direct current (DC) motor. An attenuation circuit is connected through auxiliary brushes A, A', B and B' to the commutator (16) to drain circuit from successive armature coils (15) before the main brushes (27, 28) disconnects from each of the coils (15). This prevents the spark generation that normally occurs in conventional DC motors. The attenuation circuit may also be connected before energization of the coil (15) for a soft turning on operation.
- Inventors:
-
- Oak Ridge, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 872412
- Patent Number(s):
- 5929579
- Assignee:
- Lockheed Martin Energy Research (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES
- DOE Contract Number:
- AC05-96OR22464
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- soft-commutated; direct; current; motor; method; circuit; disclosed; soft-commutation; dc; attenuation; connected; auxiliary; brushes; commutator; 16; drain; successive; armature; coils; 15; main; 27; 28; disconnects; prevents; spark; generation; normally; occurs; conventional; motors; energization; coil; soft; operation; direct current; dc motor; current motor; normally occur; drain circuit; /318/310/
Citation Formats
Hsu, John S. Soft-commutated direct current motor. United States: N. p., 1999.
Web.
Hsu, John S. Soft-commutated direct current motor. United States.
Hsu, John S. Fri .
"Soft-commutated direct current motor". United States. https://www.osti.gov/servlets/purl/872412.
@article{osti_872412,
title = {Soft-commutated direct current motor},
author = {Hsu, John S},
abstractNote = {A method and circuit is disclosed for soft-commutation of a direct current (DC) motor. An attenuation circuit is connected through auxiliary brushes A, A', B and B' to the commutator (16) to drain circuit from successive armature coils (15) before the main brushes (27, 28) disconnects from each of the coils (15). This prevents the spark generation that normally occurs in conventional DC motors. The attenuation circuit may also be connected before energization of the coil (15) for a soft turning on operation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}
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