Soft-commutated direct current motor
Patent
·
OSTI ID:6179618
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[prime], B and B[prime] 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. 13 figs.
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-96OR22464
- Assignee:
- Lockheed Martin Energy Research, Oak Ridge, TN (United States)
- Patent Number(s):
- US 5929579; A
- Application Number:
- PPN: US 9-100628
- OSTI ID:
- 6179618
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106 -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
ATTENUATION
DAMPING
ELECTRIC MOTORS
ELECTRICAL EQUIPMENT
ELECTRICAL TRANSIENTS
ENGINES
EQUIPMENT
MOTORS
SWITCHES
TRANSIENTS
VOLTAGE DROP
320106 -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
ATTENUATION
DAMPING
ELECTRIC MOTORS
ELECTRICAL EQUIPMENT
ELECTRICAL TRANSIENTS
ENGINES
EQUIPMENT
MOTORS
SWITCHES
TRANSIENTS
VOLTAGE DROP