Electricity: motive power systems – Braking – Dynamic braking
Patent
1993-06-11
1994-05-10
Shoop, Jr., William M.
Electricity: motive power systems
Braking
Dynamic braking
318246, 318251, H02P 312
Patent
active
053111087
ABSTRACT:
Motor control system for unidirectional series DC electric motor having improved dynamic braking performance for smoothly, rapidly and predictably stopping the motor armature so that any operated devices are similarly stopped at a predetermined location. The control system uses a bridge conformed like a full-wave rectifier together with a pair of switches having open and closed positions to control the direction of current through the armature. The current through the motor field winding is always in the same direction. The control switches are protected against arcing when breaking an inductive load.
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Standard Handbook for Electrical Engs. McGraw-Hill, Sec. 1.5-4.64 pp. 1304-1305 Machine Design, Jun. 1992, p. 484.
Cleaveland /Price Inc.
Martin David
Palmer W. D.
Shoop Jr. William M.
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