GB1062614A - Power factor control of alternators - Google Patents
Power factor control of alternatorsInfo
- Publication number
- GB1062614A GB1062614A GB1493064A GB1493064A GB1062614A GB 1062614 A GB1062614 A GB 1062614A GB 1493064 A GB1493064 A GB 1493064A GB 1493064 A GB1493064 A GB 1493064A GB 1062614 A GB1062614 A GB 1062614A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alternator
- power factor
- error signal
- resistor
- amplifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/34—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using magnetic devices with controllable degree of saturation in combination with controlled discharge tube or controlled semiconductor device
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
1,062,614. Automatic control of power factors. BLACKSTONE & CO. Ltd. April 10, 1964, No. 14930/64. Heading G3R. In an arrangement for controlling the power factor of an alternator having an automatic voltage regulator, a square waveform having a mark/ space ratio dependent on the power factor is compared with a reference square waveform to produce an error signal which is applied over an amplifier to the regulator which thereby operates to reduce the error to zero. As shown, voltage pulses derived from the alternator by way of a transformer 1, a diode 3 and a transistor 4, and current pulses derived over a transformer 2, a diode 19 and a transistor 10 are applied to the opposite sides of a bi-stable circuit 7, 8 which thus produces a square waveform have a mark/ space ratio dependent on the phase relationship between the voltage and current pulses. This waveform is applied over an amplifier 15, 16 to a resistor 17 which is also supplied with a reference wave-form generated by a circuit 18, 19, 20, 21; this reference signal may be derived from another alternator or a grid network, and its mark/space ratio may be adjusted by varying a resistor 22. If the power factor of the alternator differs from that set by the reference circuit an output forming an error signal is obtained from the resistor 17. This error signal is applied over an amplifier 24, 25 a power transistor 27, and a variable choke 29 to the coil 32 of an automatic voltage regulator associated with the alternator, the arrangement being such that the excitation of the alternator is varied in dependence upon the error signal whereby the power factor is maintained at the desired value.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1493064A GB1062614A (en) | 1964-04-10 | 1964-04-10 | Power factor control of alternators |
| BE648246D BE648246A (en) | 1964-04-10 | 1964-05-21 | |
| DE1964B0076947 DE1290235B (en) | 1964-04-10 | 1964-05-27 | Circuit for automatic power factor control of an alternator |
| NL6406223A NL6406223A (en) | 1964-04-10 | 1964-06-03 | |
| ES0302677A ES302677A1 (en) | 1964-04-10 | 1964-07-31 | Power factor control of alternators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1493064A GB1062614A (en) | 1964-04-10 | 1964-04-10 | Power factor control of alternators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1062614A true GB1062614A (en) | 1967-03-22 |
Family
ID=10050054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1493064A Expired GB1062614A (en) | 1964-04-10 | 1964-04-10 | Power factor control of alternators |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE648246A (en) |
| DE (1) | DE1290235B (en) |
| ES (1) | ES302677A1 (en) |
| GB (1) | GB1062614A (en) |
| NL (1) | NL6406223A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1072727B (en) * | 1960-01-07 | Lloyd Dynamowerke Aktiengesellschaft, Bremen | Compounded synchronous machine excited as a function of voltage and load |
-
1964
- 1964-04-10 GB GB1493064A patent/GB1062614A/en not_active Expired
- 1964-05-21 BE BE648246D patent/BE648246A/xx unknown
- 1964-05-27 DE DE1964B0076947 patent/DE1290235B/en active Pending
- 1964-06-03 NL NL6406223A patent/NL6406223A/xx unknown
- 1964-07-31 ES ES0302677A patent/ES302677A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL6406223A (en) | 1965-10-11 |
| ES302677A1 (en) | 1965-01-16 |
| BE648246A (en) | 1964-09-16 |
| DE1290235B (en) | 1969-03-06 |
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