Elimination of motor negative voltages during motor brake

Details Elimination of motor negative voltages during motor brake Elimination of motor negative voltages during motor brake

1995-05-04

1997-05-20

Ro, Bentsu

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

318379, 318503, 318507, 3889072, H02P 312

Patent

active

056315287

ABSTRACT:
A method for sensing motor commutation pulses during motor braking without creating negative voltages, which some junction isolated technologies substantially cannot tolerate. For instance, a commutation pulse sensing circuit containing junction isolated technology may only be able to detect commutation pulses intermittently. An H-bridge motor drive configuration is used to drive and brake a motor. High side clamp diodes are coupled between the motor terminals and a high potential source for high side braking of the motor. As an alternative to high side clamp diodes, any other suitable device may be used, including operating the pair of transistors in the upper portion of the H-bridge in an inverse mode. A commutation pulse sensing circuit is coupled to a terminal of the motor. The use of the high side brake clamp diodes avoids generating negative voltages at the motor terminals.

REFERENCES:
patent: 3708737 (1973-01-01), Johnson
patent: 3748560 (1973-07-01), Sawa et al.
patent: 4477751 (1984-10-01), Kanayama
patent: 4527103 (1985-07-01), Kade
patent: 4581565 (1986-04-01), Van Pelt et al.
patent: 5023527 (1991-06-01), Erdman et al.
patent: 5132602 (1992-07-01), Jorgensen et al.
patent: 5231338 (1993-07-01), Bulgarelli et al.
patent: 5350985 (1994-09-01), Konrad

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