Electricity: electrical systems and devices – Safety and protection of systems and devices – Motor protective condition responsive circuits
Patent
1985-05-03
1987-09-15
Pellinen, A. D.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Motor protective condition responsive circuits
361 28, H02H 709
Patent
active
046943714
ABSTRACT:
A protection circuit for stalling protection in commutatorless direct current motors is driven by Hall generators, in particular Hall IC's. A respective semiconductor circuit element (5, 14) disposed in series with each stator winding (1, 2) is turned on or off in dependence on a control voltage induced in the stator windings (1, 2). The control voltage (U.sub.B) is constituted by the sum of the operating voltage in the unenergized windings (1, 2) and the counter-e.m.f. induced in these windings, whereby, if the sum of these voltages is greater than the operating voltage, the semiconductor circuit element (5, 14) connected to the respective energized winding (1, 2) is turned on, and, if the counter-e.m.f. is zero or falls below a predetermined cut-off value, the respective semiconductor circuit element (5, 14) is turned off.
REFERENCES:
patent: 3387205 (1968-06-01), Terdall
patent: 3919600 (1975-11-01), Sons
patent: 3931557 (1976-01-01), Osburn
patent: 4030005 (1977-06-01), Doemen
patent: 4052625 (1977-10-01), Cameron
patent: 4245370 (1981-01-01), Baker
patent: 4354214 (1982-10-01), Walton
patent: 4484114 (1984-11-01), Ebbs
patent: 4504881 (1985-03-01), Wada et al.
patent: 4509088 (1985-04-01), Profio
patent: 4535275 (1985-09-01), Muller
patent: 4542323 (1985-09-01), Doemen
patent: 4578623 (1986-03-01), Tsuzutani et al.
Lipp Helmut
Reinhardt Wilhelm
ebm Elektrobau Mulfingen GmbH & Co.
Pellinen A. D.
Wysocki A. Jonathan
LandOfFree
Protection circuit for stalling protection in commutatorless dir does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Protection circuit for stalling protection in commutatorless dir, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protection circuit for stalling protection in commutatorless dir will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1389361