US3585490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage regulator arrangement for generators having auxiliary excitation means
Assignee: Cooper Industries LLC
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Filing: 1969-03-19
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Granted: 1971-06-15
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Expires: 1989-03-19
Abstract
Abstract An arrangement for causing a desired full output voltage to be produced from a generator at a lower generator speed than is possible as a result of self buildup wherein means are provided to detect when the generator armature is rotating and for causing the generator to be separately excited from a source of direct current, such as a storage battery connected to be charged from the generator, whenever the generator armature attains a preselected speed, which speed is much lower than the normal operating speed.
Inventors
- 👤 William B Zelina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:49
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/08; H02J; H02J7/00; H02J7/14; H02J7/16; H02J7/163
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
138 words
In an electrical system of the class wherein a variable speed generator charges a storage battery and when the generator reaches a desired output voltage a voltage regulating means becomes effective to regulate the generator for constant potential by control of current flow in the generator shunt field winding, the combination with said voltage regulating means of a generator speed detecting means operative at a preselected low generator speed on the order of one-third or less of rated speed to produce an output trigger signal, and coupling means coupled to said storage battery and responsive to said trigger signal for applying said battery voltage to said field winding to separately excite said field winding so that the generator reaches the desired constant potential value at a lower generator speed than is possible as a result of a self-buildup.
Claim 2
Dependent Claim
138 words
In an electrical system of the class wherein a variable speed generator charges a storage battery and when the generator reaches a desired output voltage a voltage regulating means becomes effective to regulate the generator for constant potential by control of current flow in the generator shunt field winding, the combination with said voltage regulating means of a generator speed detecting means operative at a preselected low generator speed on the order of one-third or less of rated speed to produce an output trigger signal, and coupling means coupled to said storage battery and responsive to said trigger signal for applying said battery voltage to said field winding to separately excite said field winding so that the generator reaches the desired constant potential value at a lower generator speed than is possible as a result of a self-buildup.
Claim 3
Dependent Claim
46 words
The electrical system recited in claim 1 wherein said voltage regulating means includes a main regulating transistor device that also comprises the said coupling means and said generator speed detecting means is operative to render said main regulating transistor conducting at the preselected low generator speed.
Claim 4
Dependent Claim
42 words
The electrical system recited in claim 1 wherein said voltage regulating means includes a controlled rectifier that also comprises the coupling means and said generator speed detecting means is operative to render said controlled rectifier conducting at the preselected low generator speed.
Claim 5
Dependent Claim
50 words
The electrical system recited in claim 2 wherein said generator speed detecting means comprises a transistor device connected to sense the generator output voltage and operative at a preselected low generator voltage on the order of one-third or less of the normal generator operating voltage to produce the trigger signal.
Claim 6
Dependent Claim
50 words
The electrical system recited in claim 3 wherein said generator speed detecting means comprises a transistor device connected to sense the generator output voltage and operative at a preselected low generator voltage on the order of one-third or less of the normal generator operating voltage to produce the trigger signal.
Claim 7
Dependent Claim
114 words
An arrangement for producing a desired full output voltage from a generator having an armature and a field at a lower generator speed than is possible as a result of self-buildup through the selective connection of an extra source of voltage to the field comprising: a. Means for sensing rotary motion of said generator armature and deriving an output trigger signal in response to the generator attaining a preselected low speed on the order of one-third or less of rated speed and b. Means responsive to the output trigger signal derived by said sensing means for causing the extra source of voltage to be supplied to said field to cause the separate excitation thereof.
Claim 8
Dependent Claim
114 words
An arrangement for producing a desired full output voltage from a generator having an armature and a field at a lower generator speed than is possible as a result of self-buildup through the selective connection of an extra source of voltage to the field comprising: a. Means for sensing rotary motion of said generator armature and deriving an output trigger signal in response to the generator attaining a preselected low speed on the order of one-third or less of rated speed and b. Means responsive to the output trigger signal derived by said sensing means for causing the extra source of voltage to be supplied to said field to cause the separate excitation thereof.
Claim 9
Dependent Claim
25 words
The arrangement recited in claim 6 wherein said extra source of voltage is provided by a storage battery connected to be charged from said generator.
Claim 10
Dependent Claim
74 words
The arrangement recited in claim 6 wherein said means for sensing rotary motion of said generator armature comprises a transistor device connected to the generator output and rendered conductive from the generator output voltage at a low voltage value on the order of one-third or less of the normal generator voltage, said low generator output voltage being produced from the residual magnetization of the field iron of said generator at a low generator speed.
Claim 11
Dependent Claim
25 words
The arrangement recited in claim 8 wherein said extra source of voltage is provided by a storage battery connected to be charged from said generator.
Claim 12
Independent Claim
85 words
A method of producing a desired full output voltage from a generator having an armature and a field at a lower generator speed than is possible as a result of self-buildup which comprises: a. Providing a direct current voltage source; b. Detecting rotary motion of said generator armature; and c. Connecting said direct current voltage source across said generator field in response to said generator armature attaining a preselected low speed on the order of one-third or less of the rated speed of the generator.
Claim 13
Independent Claim
85 words
A method of producing a desired full output voltage from a generator having an armature and a field at a lower generator speed than is possible as a result of self-buildup which comprises: a. Providing a direct current voltage source; b. Detecting rotary motion of said generator armature; and c. Connecting said direct current voltage source across said generator field in response to said generator armature attaining a preselected low speed on the order of one-third or less of the rated speed of the generator.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |