Sensorless brushless motor driving apparatus with induced voltag

Details Sensorless brushless motor driving apparatus with induced voltag Sensorless brushless motor driving apparatus with induced voltag

1993-11-23

1995-12-05

Wysocki, Jonathan

Electricity: motive power systems

Limitation of motor load, current, torque or force

318254, H02P 700

Patent

active

054732328

ABSTRACT:
In a driving apparatus for a sensorless brushless motor, changing-over of excitation is executed at every electric angle of 30.degree. from a trigger point defined by a signal obtained by latching an induced voltage at the time of fall-down of the pulse-width modulation signal.

REFERENCES:
patent: 4712050 (1987-12-01), Nagasawa et al.
patent: 4743815 (1988-05-01), Gee et al.
patent: 4780651 (1988-10-01), Nakano et al.
patent: 4900993 (1990-02-01), Yasohara et al.
patent: 4928043 (1990-05-01), Plunkett
patent: 5182499 (1993-01-01), Inaji et al.
patent: 5221881 (1993-06-01), Cameron
patent: 5223772 (1993-06-01), Carobolante
patent: 5343127 (1994-08-01), Maiocchi

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