GB1227368A - - Google Patents
Info
- Publication number
- GB1227368A GB1227368A GB3787468A GB1227368DA GB1227368A GB 1227368 A GB1227368 A GB 1227368A GB 3787468 A GB3787468 A GB 3787468A GB 1227368D A GB1227368D A GB 1227368DA GB 1227368 A GB1227368 A GB 1227368A
- Authority
- GB
- United Kingdom
- Prior art keywords
- output
- transformer
- speed
- potentiometer
- network
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of turbines
- F03B15/06—Regulating, i.e. acting automatically
- F03B15/08—Regulating, i.e. acting automatically by speed, e.g. by measuring electric frequency or liquid flow
-
- 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/16—Controlling the angular speed of one shaft
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
1,227,368. Automatic speed control. LENINGRADSKY METALLICHESKY ZAVOD IMENI XXII SIEZDA KPSS. Aug. 8, 1968, No. 37874/68. Heading G3R. The flow of liquid through a turbine 1 and therefore its speed is controlled by a proportional and integral feedback loop comprising a tachogenerator 2; a magnetic amplifier 33-34-55 and a hydromechanical actuator 17, the loop including a T- network 40-45 of the form shown. The speed of the turbine is measured by the tachogenerator 2, 5, 6 whose variable frequency output is applied to a tuned circuit 3, 4 giving an output in a transformer 8 when the speed deviates from a predetermined value. The output of transformer 8 is applied through a transformer 27 to a phase sensitive detector 31 the output of which is fed to the magnetic amplifier 33, 34, 35, which feeds the actuator 17. The output of the tachogenerator is also applied to a transformer 14 which provides power to the magnetic amplifier and to two potentiometers 20, 25 whose position is controlled by the actuator 17. The output of potentiometer 20 is added through transformer 21 with a speed setting value from transformer 9 to the output of transformer 8 applied to the phase detector. The output of potentiometer 35 is applied through transformer 36 and a bridge rectifier 39 to the input of the T-network 40-45. The output of the T-network is applied through a variable capacitance 46-48 to the input of the magnetic amplifier. The turbine speed is set by potentiometer 11 (driven by a motor 13), the minimum setting being set by a potentiometer 12. The inclusion of the T-network is stated to permit independant adjustment of the time constant and feedback factor of the loop while keeping their product constant. The variable capacitance 46-48 permits altering the time constant keeping the feedback factor constant; the additional capacitors 47,48 are precharged from rectifier 39 to avoid upsetting the system when changing capacitance.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3787468 | 1968-08-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1227368A true GB1227368A (en) | 1971-04-07 |
Family
ID=10399623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3787468A Expired GB1227368A (en) | 1968-08-08 | 1968-08-08 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1227368A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3848171A (en) * | 1971-12-30 | 1974-11-12 | Siemens Ag | Arrangement for the optimum setting of the rotor blades of water turbines |
WO2013050091A1 (en) * | 2011-10-07 | 2013-04-11 | Voith Patent Gmbh | Method for primary adjustment of a hydroelectric power plant |
-
1968
- 1968-08-08 GB GB3787468A patent/GB1227368A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3848171A (en) * | 1971-12-30 | 1974-11-12 | Siemens Ag | Arrangement for the optimum setting of the rotor blades of water turbines |
WO2013050091A1 (en) * | 2011-10-07 | 2013-04-11 | Voith Patent Gmbh | Method for primary adjustment of a hydroelectric power plant |
CN103998769A (en) * | 2011-10-07 | 2014-08-20 | 沃依特专利有限责任公司 | Method for primary adjustment of a hydroelectric power plant |
CN103998769B (en) * | 2011-10-07 | 2016-08-17 | 沃依特专利有限责任公司 | For the method that power station is carried out primary adjustment |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |