US4408152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single phase, self-regulated alternator
Assignee: LE REALESTATE ACQUIRING CORP
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Filing: 1981-06-22
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Granted: 1983-10-04
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Expires: 2001-06-22
Abstract
Abstract A substantially constant frequency self-regulated generator produces in one embodiment 120 volts or the like single phase output or in another embodiment 120 or 240 volts or the like single phase output. The generator employs an exciter stator and a stationary rectifier assembly with the former being a six pole exciter stator alternately wound with three shunt poles and three series poles with two separate windings on each series pole. The three shunt poles of the exciter stator are connected in series making, in effect, one shunt winding. The series circuit consists of two separate windings on each series pole, which are respectively parallel connected and wound on all three series poles. Each series pole then has two separate isolated coils. With the exciter stator there is employed a stationary diode assembly utilizing three diodes as rectifiers for the shunt and isolated series windings. A further smaller diode in parallel with the shunt winding discharges the stored magnetic field allowing some current flow during the half cycle when the shunt winding is not energized. In addition, a small slide wire resistor may be employed for no-load voltage adjustments.
Inventors
- 👤 Andrew F. Szippl
- 👤 Robert B. Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:37
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/14; H02P9/36; H02K; H02K19/00; H02K19/16; H02K19/26
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
53 words
A generator for producing a higher or lower voltage output comprising an alternator stator, an exciter stator, said exciter stator including two series windings, and means to energize both series windings every other half cycle at the lower voltage output and alternate series windings during every half cycle at the higher voltage output.
Claim 2
Dependent Claim
53 words
A generator for producing a higher or lower voltage output comprising an alternator stator, an exciter stator, said exciter stator including two series windings, and means to energize both series windings every other half cycle at the lower voltage output and alternate series windings during every half cycle at the higher voltage output.
Claim 3
Dependent Claim
24 words
A generator as set forth in claim 1 wherein said means includes a stationary diode assembly operative to energize the series windings as aforesaid.
Claim 4
Dependent Claim
31 words
A generator as set forth in claim 2 including a diode for each series winding operative to direct current flow through either or both series windings depending on the winding interconnections.
Claim 5
Dependent Claim
25 words
A generator as set forth in claim 3 wherein the diode for each series winding is in parallel therewith and operates in the freewheeling mode.
Claim 6
Dependent Claim
18 words
A generator as set forth in claim 4 including a shunt winding, and a diode in series therewith.
Claim 7
Dependent Claim
24 words
A generator as set forth in claim 5 including an oppositely directed diode parallel with the shunt winding and operating in the freewheeling mode.
Claim 8
Dependent Claim
24 words
A generator as set forth in claim 6 including a tap on the alternator stator operative to energize the shunt winding at no load.
Claim 9
Dependent Claim
19 words
A generator as set forth in claim 7 including a voltage adjust resistor between said tap and shunt winding.
Claim 10
Dependent Claim
27 words
A generator as set forth in claim 1 wherein said exciter stator is a multi-pole stator with said two series windings being isolated windings on alternate poles.
Claim 11
Dependent Claim
21 words
A generator as set forth in claim 9 including a series connected shunt winding on alternate poles on said exciter stator.
Claim 12
Dependent Claim
25 words
A generator as set forth in claim 10 including a diode in parallel with said shunt winding operative to discharge the magnetic field stored therein.
Claim 13
Dependent Claim
26 words
A generator as set forth in claim 11 including a diode in series with said shunt winding operative to provide current flow therethrough under no-load conditions.
Claim 14
Dependent Claim
22 words
A generator as set forth in claim 12 including a tap on said alternator stator to provide current to said shunt winding.
Claim 15
Dependent Claim
19 words
A generator as set forth in claim 13 including a voltage adjust resistor between said top and shunt winding.
Claim 16
Dependent Claim
23 words
A generator as set forth in claim 1 wherein said exciter stator includes multiple poles, every other pole including said two series windings.
Claim 17
Dependent Claim
24 words
A generator as set forth in claim 15 wherein said stator includes 6 poles, alternate poles being each wound with said two series windings.
Claim 18
Dependent Claim
23 words
A generator as set forth in claim 16 wherein each of said two series windings are isolated on each pole and series connected.
Claim 19
Dependent Claim
16 words
A generator as set forth in claim 16 wherein every other pole includes a shunt winding.
Claim 20
Dependent Claim
21 words
A generator as set forth in claim 18 wherein said shunt windings are series connected to form a single shunt winding.
Claim 21
Dependent Claim
83 words
In a generator of the substantially constant frequency type having an alternator rotor and stator, a corresponding exciter rotor and stator, and operable in two modes, the improvement comprising a multi-pole exciter stator having alternate series and shunt poles, each series pole having two separate windings, and means for using said two separate windings, alternately during each half cycle of one mode of operation and for using said two separate windings concurrently during every other half cycle of the other mode of operation.
Claim 22
Dependent Claim
83 words
In a generator of the substantially constant frequency type having an alternator rotor and stator, a corresponding exciter rotor and stator, and operable in two modes, the improvement comprising a multi-pole exciter stator having alternate series and shunt poles, each series pole having two separate windings, and means for using said two separate windings, alternately during each half cycle of one mode of operation and for using said two separate windings concurrently during every other half cycle of the other mode of operation.
Claim 23
Dependent Claim
28 words
A generator as set forth in claim 20 wherein said two separate windings on each series pole are connected in parallel to form such two separate series windings.
Claim 24
Dependent Claim
18 words
A generator as set forth in claim 21 including a diode in parallel with each separate series winding.
Claim 25
Dependent Claim
24 words
A generator as set forth in claim 20 wherein said exciter stator has 6 poles with every other pole including said two separate windings.
Claim 26
Dependent Claim
16 words
A generator as set forth in claim 23 wherein every other pole includes a shunt winding.
Claim 27
Dependent Claim
21 words
A generator as set forth in claim 24 wherein said shunt windings are series connected to form a single shunt winding.
Claim 28
Dependent Claim
26 words
A generator as set forth in claim 25 including a diode in series with said shunt winding operative to provide current flow therethrough under no-load conditions.
Claim 29
Dependent Claim
25 words
A generator as set forth in claim 26 including a diode in parallel with said shunt winding operative to discharge the magnetic field stored therein.
Claim 30
Dependent Claim
22 words
A generator as set forth in claim 27 including a tap on said alternator stator to provide current to said shunt winding.
Claim 31
Dependent Claim
19 words
A generator as set forth in claim 28 including a voltage adjust resistor between said tap and shunt winding.
Claim 32
Dependent Claim
81 words
In a generator of the substantially constant frequency type having an alternator rotor and stator, and a corresponding exciter rotor and stator, the exciter stator having at least two separate series windings, and operable in two modes, the improvement comprising a stationary diode assembly including circuit means having control diodes for each winding operative to energize said windings alternately during each half cycle of one mode of operation and concurrently during every other half cycle of the other mode of operation.
Claim 33
Dependent Claim
81 words
In a generator of the substantially constant frequency type having an alternator rotor and stator, and a corresponding exciter rotor and stator, the exciter stator having at least two separate series windings, and operable in two modes, the improvement comprising a stationary diode assembly including circuit means having control diodes for each winding operative to energize said windings alternately during each half cycle of one mode of operation and concurrently during every other half cycle of the other mode of operation.
Claim 34
Dependent Claim
33 words
A generator as set forth in claim 30 including a shunt winding in said exciter stator and a shunt control diode in said assembly operative to energize said shunt winding under no-load conditions.
Claim 35
Dependent Claim
32 words
A generator as set forth in claim 31 wherein said diode assembly includes a further diode parallel with said shunt winding but oppositely directed and in series with said shunt control diode.
Claim 36
Dependent Claim
41 words
A generator as set forth in claim 30 wherein said two modes of operation have different output voltages and said windings are energized alternately during each half cycle when the generator is operated in the higher voltage output mode of operation.
Claim 37
Dependent Claim
55 words
A generator as set forth in claim 33 wherein said circuit means includes means for energizing one of said two separate series windings during alternate half cycles and the other of said two separate series windings during the remaining half cycles to provide, in effect, full wave excitation at such higher voltage mode of operation.
Claim 38
Dependent Claim
16 words
A generator as set forth in claim 33 wherein said higher voltage output is 240 volts.
Claim 39
Dependent Claim
32 words
A generator as set forth in claim 30 wherein said windings are energized concurrently during every other half cycle when the generator is operated in the lower voltage output mode of operation.
Claim 40
Dependent Claim
16 words
A generator as set forth in claim 36 wherein said lower voltage output is 120 volts.
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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) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |