Patent US5631544A successfully refreshed from Google Patents.
US5631544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid alternator with voltage regulator
Assignee: Ecoair Corp
•
Filing: 1995-06-02
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Granted: 1997-05-20
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Expires: 2015-06-02
Abstract
Abstract A hybrid alternator includes a stator winding and a rotor winding. The stator winding includes a neutral point having a neutral point voltage and is preferably arranged as a three phase winding with the neutral point being located at the center junction of three stator winding portions arranged in a "Y" configuration. The rotor winding is mounted on a rotor which also includes permanent magnets. The rotor winding has a first end connected to the neutral point on the stator winding and a second end connected to a switching circuit. The rotor winding produces a magnetic flux field that additively combines with the permanent magnetic flux field from the permanent magnets when the switching circuit connects the second end of the rotor winding to a voltage greater than the neutral point voltage and produces a magnetic flux field that subtractively combines with the permanent magnetic flux field when the switching circuit connects the second end to a voltage less than the neutral point voltage.
Inventors
- 👤 Charles D. Syverson
- 👤 William P. Curtiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:12
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2706; H02K1/272; H02K1/274; H02K1/2753; H02K1/276; H02J; H02J7/00; H02J7/14; H02J7/1423; H02J7/1438; H02J7/16; H02J7/163; H02J7/28; H02J7/80; H02K1/24; H02K1/2766; H02K1/2773; H02K16/00; H02K16/02; H02K19/00; H02K19/16; H02K19/26; H02K19/28; H02K19/36; H02K19/365; H02K21/00; H02K21/02; H02K21/04; H02K21/042; H02P; H02P25/00; H02P25/16; H02P9/00; H02P9/14; H02P9/26; H02P9/30; H02P9/305; H02H; H02H7/00; H02H7/06; H02H7/067; H02J7/60; H02J7/64; H02K1/2713; H02K19/02; H02K19/10; H02K19/103; H02K3/00; H02K3/46; H02K3/50; H02K3/51; H02K9/00; H02K9/02; H02K9/04; H02K9/06; H02P2101/00; H02P2101/45; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/70
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
168 words
A hybrid alternator comprising: a stator including a stator winding having a plurality of output ends connected through portions of the stator winding to a common neutral point having a neutral point voltage; and a rotor including: a shaft mounted for rotation within the stator, at least one permanent magnet mounted on the rotor producing a permanent magnetic flux field, a rotor winding mounted on the shaft and having a first end connected to the neutral point on the stator winding and a second end adapted for connection to a switching circuit in a voltage regulator, the rotor winding producing a rotor magnetic flux field that additively combines with the permanent magnetic flux field when the switching circuit connects the second end to a voltage greater than the neutral point voltage and producing a rotor magnetic flux field that subtractively combines with the permanent magnetic flux field when the switching circuit connects the second end to a voltage end to a voltage less than the neutral point voltage.
Claim 2
Dependent Claim
168 words
A hybrid alternator comprising: a stator including a stator winding having a plurality of output ends connected through portions of the stator winding to a common neutral point having a neutral point voltage; and a rotor including: a shaft mounted for rotation within the stator, at least one permanent magnet mounted on the rotor producing a permanent magnetic flux field, a rotor winding mounted on the shaft and having a first end connected to the neutral point on the stator winding and a second end adapted for connection to a switching circuit in a voltage regulator, the rotor winding producing a rotor magnetic flux field that additively combines with the permanent magnetic flux field when the switching circuit connects the second end to a voltage greater than the neutral point voltage and producing a rotor magnetic flux field that subtractively combines with the permanent magnetic flux field when the switching circuit connects the second end to a voltage end to a voltage less than the neutral point voltage.
Claim 3
Dependent Claim
62 words
A hybrid alternator according to claim 1 wherein the stator winding is a multiphase winding composed of a plurality of individual stator windings, each having an inner end and an outer end, the stator winding being connected together at the inner ends in a star configuration, the neutral point being located at the connected together inner ends of the individual stator windings.
Claim 4
Dependent Claim
34 words
A hybrid alternator according to claim 2 wherein the stator winding is a three phase winding and the neutral point is located at the junction of three stator windings arranged in a "Y" configuration.
Claim 5
Dependent Claim
69 words
A hybrid alternator according to claim 1 further comprising a voltage regulator having a switching circuit connected to the second end of the rotor winding, the voltage regulator being adapted for connection to positive and negative terminals of a battery, the switching circuit alternately connecting the second end of the rotor winding to the positive and negative terminals of the battery to regulate an output voltage of the alternator.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-05-19 | 2000-11-18 | 2001-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-05-19 | 2004-11-18 | 2005-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-05-19 | 2008-11-18 | 2009-05-20 | $7700.00 | Window Closed / Lapsed |