Electricity: motive power systems – Synchronous motor systems – Hysteresis or reluctance motor systems
Patent
1993-09-16
1996-02-06
Wysocki, Jonathan
Electricity: motive power systems
Synchronous motor systems
Hysteresis or reluctance motor systems
318254, H02P 700
Patent
active
054898315
ABSTRACT:
A pulse width modulation controller particularly useful for a variable speed variable torque electric motor. Inputs to the controller are a desired RPM signal, a motor electrical signal which is a function of the RPM of the rotor of the motor and its angular position relative to the stator, and a torque feed back signal derived from the power phase winding circuits of the motor. The controller produces pulse width modulated power drive signals which are applied to power switches of the power phase winding circuits of the motor to allow electric current to flow through the power phase winding circuits when power phase enable signals produced by the controller sequentially enable the power switch of a power phase winding circuit to do so. The duty cycle of the power drive signals is a function of the difference between the desired and actual RPM of the motor and the torque of the motor. The frequency of the power drive signals is a fixed integral multiple of the frequency of the power phase enable signals over the full operating range of RPMs of the motor.
REFERENCES:
patent: 3436635 (1969-04-01), James et al.
patent: 3560827 (1971-02-01), Schiller
patent: 3569805 (1971-03-01), Hammond
patent: 3753067 (1973-08-01), Milligan
patent: 4186334 (1980-01-01), Hirata
patent: 4300081 (1981-11-01), Van Landingham
patent: 4335343 (1982-06-01), Dreiseitl et al.
patent: 4338558 (1982-07-01), Okamatsu et al.
patent: 4386300 (1983-05-01), Ogawa
patent: 4456859 (1984-06-01), Watanabe et al.
patent: 4465961 (1984-08-01), Landino
patent: 4482850 (1984-11-01), Sonoda et al.
patent: 4546293 (1985-10-01), Peterson et al.
patent: 4599545 (1986-07-01), Moriki et al.
patent: 4602201 (1986-07-01), Edwards
patent: 4617675 (1986-10-01), Ashikaga et al.
patent: 4625156 (1986-11-01), Komiya et al.
patent: 4670696 (1987-06-01), Byrne et al.
patent: 4695778 (1987-09-01), Chito et al.
patent: 4734628 (1988-03-01), Bench et al.
patent: 4739230 (1988-04-01), Sonobe et al.
patent: 4800327 (1989-01-01), Fujioka et al.
patent: 4843288 (1989-06-01), Volz et al.
patent: 4897583 (1990-01-01), Rees
patent: 4924168 (1990-05-01), Horie et al.
patent: 5072166 (1991-12-01), Ehsani
patent: 5208740 (1993-05-01), Ehsani
Honeywell Inc.
McDowall Paul H.
Wysocki Jonathan
LandOfFree
Pulse width modulating motor controller does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pulse width modulating motor controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulse width modulating motor controller will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2177043