Electricity: motive power systems – Synchronous motor systems – Synchronization systems
Patent
1998-02-23
2000-02-01
Martin, David
Electricity: motive power systems
Synchronous motor systems
Synchronization systems
318720, 318148, 310156, 310162, H02P 146
Patent
active
060207124
ABSTRACT:
An AC machine comprises: a motor energized by an AC source subject to irregularities of frequency and voltage; a generator driven by the motor for supplying an AC output signal of substantially constant frequency and voltage, the generator having a rotor with a layer of a re-magnetizable, relatively high coercive magnetic material on the rotor and a stator of a soft magnetic material having a pole piece and an excitation coil on the pole piece, the stator and the rotor rotating relative to one another with a clearance enabling rotor poles to be formed on the re-magnetizable layer by current energizing the excitation coil; and, a control signal generator responsive to at least one of the AC output signal and a signal representative of the current energizing the excitation coil for generating pulses of programmed wave shapes which differ in at least one of width, phase and magnitude as necessary to modify the rotor poles during the irregularities of the AC source to maintain the substantially constant frequency and voltage of the AC output signal.
REFERENCES:
patent: 2113102 (1938-04-01), Whittle
patent: 3931535 (1976-01-01), Roesel, Jr.
patent: 4065703 (1977-12-01), Schlicher et al.
patent: 4168459 (1979-09-01), Roesel, Jr.
patent: 4177414 (1979-12-01), Roesel, Jr. et al.
patent: 4227136 (1980-10-01), Roesel, Jr.
patent: 4406950 (1983-09-01), Roesel, Jr.
patent: 4412170 (1983-10-01), Roesel, Jr.
patent: 4600873 (1986-07-01), Roesel, Jr. et al.
patent: 4663536 (1987-05-01), Roesel, Jr. et al.
patent: 5068587 (1991-11-01), Nakamura
patent: 5254894 (1993-10-01), Satake et al.
patent: 5281879 (1994-01-01), Satake et al.
patent: 5355069 (1994-10-01), Bahn
patent: 5635810 (1997-06-01), Goel
patent: 5754024 (1998-05-01), Sugiyama
Barber Ronnie J.
Roesel, Jr. John F.
Martin David
Precise Power Corporation
LandOfFree
Rotor control for synchronous AC machines does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotor control for synchronous AC machines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotor control for synchronous AC machines will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-940201