Electricity: motive power systems – Braking – Automatic and/or with time-delay means
Patent
1987-01-30
1989-04-04
Shoop, Jr., William M.
Electricity: motive power systems
Braking
Automatic and/or with time-delay means
318326, 318345C, H02D 500
Patent
active
048189235
ABSTRACT:
An inexpensive and reliable regulating apparatus contains between a regulating unit and an electric motor series-connected therewith a feedback path for a single tachometer signal and including a band-pass filter. The band-pass filter determines the operating range of the electric motor. The regulating unit is constructed such that during operation the electric motor is supplied with power only when a signal from the feedback path arrives at the regulating unit. Under the action of external disturbances the supply of power is interrupted at least for a predetermined duration of time.
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Publication by J. M. Stephenson entitled "Thyristor FED D.C. Drives"; Proceedings of the First European Conference on Electrical Drives/Motors/Controls '82, Jun. 29 to Jul. 1, 1982, by The University of Leeds, UK.
Felber Johannes
Heinz Kurt
Kleeman Werner W.
Martin David
Shoop Jr. William M.
Willi Studer AG
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