GB2190554A - An electricity generating system - Google Patents
An electricity generating system Download PDFInfo
- Publication number
- GB2190554A GB2190554A GB08710879A GB8710879A GB2190554A GB 2190554 A GB2190554 A GB 2190554A GB 08710879 A GB08710879 A GB 08710879A GB 8710879 A GB8710879 A GB 8710879A GB 2190554 A GB2190554 A GB 2190554A
- Authority
- GB
- United Kingdom
- Prior art keywords
- engine
- drive
- generating system
- electricity generating
- auxiliary generator
- 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.)
- Withdrawn
Links
- 230000005611 electricity Effects 0.000 title claims description 41
- 239000000446 fuel Substances 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 21
- 238000004146 energy storage Methods 0.000 claims description 19
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
A main generator 12 powered by natural energy, such as the wind, is connected to energise a load and drive an auxiliary machine 16 as a motor during normal periods, a flywheel 18 then being driven by the machine 16. When the natural energy is interrupted or reduced, an electrically operated clutch 22 is engaged so that an internal combustion engine 24 is started by the flywheel 18 and thereafter drives the machine 16 as a generator to power the load, the flywheel 18 also being used to drive the machine 16 during the changeover of the drive of machine 16 from generator 12 to engine 24. Flywheel 18 may rotate in an evacuated chamber. In a modification, (Figure 2), the machine 16 motors the engine 24 at reduced speed via a speed reducer and a first unidirectional clutch during normal periods, and means responsive to a fall in output from generator 12 controls fuel supply or ignition to start the engine 24 which then drives the machine 16 through a second unidirectional clutch. <IMAGE>
Description
SPECIFICATION
An electricity generating system
The invention relates to an electricity generating system.
The harnessing of natural energy such as solar energy, wind or hydro to provide electrical power has been known for manyyears and has beenfound to be a viable alternative to mains electricity derived from national grid systems, particularly in remote locations. However, one of the problems of such systems has been the production of electricityfor use during periods where there is an interruption of natural energy, e.g. calm periods.
One way of dealing with such a problem isto provide an internal combustion engine which drives an auxiliary generator during such periods as a substitute for the main generator. The engine can be made to switch on or off automatically in accordance with a sensed loss and resumption of power.
Whilst such a system is generally satisfactory, there is an undesirable reduction in electricity supply from the time thatthe engine starts until thetimeit reaches full speed which is disadvantageous. An object of the present invention is to provide a system which attempts to reduce this particular disadvantage.
According to one aspect of the invention there is provided an electricity generating system which utilises a main generator to be powered normally by natural energy such as wind or solar power, and an engineto power an auxiliary generator during periods when said natural energy is interrupted, the system comprising a connection between the generators to enable the main generatorto drive the auxiliary generator during normal periods, and a mechanical energy storage device which is operated during normal periods whereby during changeover from drive ofthe auxiliary generator by said main generatorto drive by said engine, said mechanical energy storage device will drive said auxiliary generator so asto produce an electrical output.
The use of the mechanical energy storage device helpsto maintain an electricitysupplyatthenormal level during the changeover period.
According to another aspect of the invention there is provided a method of maintaining an electricity supply in an electrically generating system which utilises a main generatorto be powered normally by natural energy such as wind or solar power and an enginetodriveanauxiliarygeneratorduring periods when said natural energy is interrupted, comprising using the main generatorto drive the auxiliary generatorduring normal periods, storing mechanical energy resulting from such drive and using the stored mechanical energy to drive the auxiliarygeneratorand produce electrical output during a changeoverfrom drive by the main generatorto drive by said engine.
The two generators are preferably connected by an electrical circuit.
The energy storage device may be driven by the auxiliary generator when the auxiliary generator is driven during normal periods.
The energy storage device may be a flywheel which may be driven by a shaft of the auxiliary generator by being mounted on the shaft or can be driven through a transmission such as a belt drive.
Clutch means may be provided in a drive transmission between the auxiliary generator and the engine. The clutch means may be in a non drive-transmitting condition when the auxiliary generator is driven by the main generator. The clutch means may be placed in a drive transmitting condition as a result of interruption or reduction of said natural energy so that drive will be transmitted from said energy storage device to the engine which is started to drive the auxiliary generator. The rotation of the flywheel may be arranged to effect such starting of the engine. Preferably, the energy storage device simultaneously drives the auxiliary generator so as to provide electrical output from the auxiliary generatorwhile the engine picks up speed.
Controi means may be provided which can sense a reduction or other change in output or e.g. a change in flywheel speed to enable a clutch operating signal to be produced.
The auxiliary generator may, in one embodiment, be arranged to drive the engine where the engine has not been started so asto run independently. Driving an engine without it running independently is known as "motoring" the engine.
Where clutch means is provided in a drive transmission between the auxiliary generator and the engine, second clutch means may be provided in a second drivetransmission through which the auxiliary generator motors the engine during said normal periods. One of the drive transmissions may include a reduction drive.
Thefirstclutch may be in a non drive-transmitting condition when the second clutch transmits drive from the auxiliarygeneratortothe engine andthe second clutch may be in a non drive-transmitting condition when the first clutch transmits drive from the engine to the auxiliary generator.
The first clutch means and/or the second clutch means may be of the unidirectional type, e.g. roller or sprang type clutches.
Control means may be arranged to sense a change in output from the main generator to provide a signal in response to which the motoring engine will start so as to drive the auxiliary generator. Such control means may control the introduction of fuel into the engine or may control ignition of the engine.
Preferably the energy storage device drives the auxiliarygeneratorwhilethe engine picks up speed.
In one embodimentthe auxiliary generator can either motorthe engine during normal periods through the second transmission or can be connected to the engine through clutch meansto drive the engine which is started to drivethe auxiliary generator during interruption or reduction of natural energy. In such a case a further energy storage device may be provided which is used to drive the enginethrough the clutch means during interruption or reduction of natural energy.
According to a further aspect of the invention there is provided an electricity generating system which
utilises a main generatorto be powered normally by natural energy such as wind or solar power, and an engine to power an auxiliary generator during periods when said natural energy is interrupted, the system comprising a connection between the two generators to enable the main generator to drive the auxiliary generator during normal periods, drive transmission means through which drive is transmitted to motor the engine during normal periods, and control means which causes the motoring engineto start so asto drive the auxiliary generator during a period when said natural energy supply is interrupted.
As above the control means may control the introduction of fuel into the engine, for example the control means may control an injectorforinjecting diesel fuel into the engine, or may control ignition.
An energystoragedevice,e.g. aflywheel as before, may be driven from a shaft of the auxiliary generator during normal periods. The shaft of the auxiliary generator may be connected to a drive shaft of the engine through unidirectional means and the shaft of the auxiliary generator may also be arranged to drive the engine drive shaft of by means of drive transmission whereby rotational movement ofthe auxiliarygeneratorduring normal periods will be transmitted to the engine drive shaftvia the transmission to effect motoring of the engine, the unidirectional means permitting the shafts to rotate relative to each other.The drive transmission may comprise a reduction drive and may include further unidirectional means. lnthatwaythefirst unidirectional means overruns during motoring of the engine and the further unidirectional means overruns when the engine drives the auxiliary generator.
A system in accordance with the invention will now be described byway of example with reference to the accompanying drawings in which:
Figure lisa diagram of a wind powered generator system embodying the present invention, and
Figure2 is a detailed plan view of part of another system in accordance with the invention.
In Figure 1 tower 10 carries a main generator 12 which is driven by a wind powered shaft 13 in known manner. Electrical output from the main generator 12 is carried by conductors such as wires 1 4to a voltage regulator 15 to enable a load to be powered.
The output from section 15 is also used to power an auxiliary generator 16 and drive it as a motor.
The auxiliary generator 16 has a rotor shaft 17 which is drivably connected to a flywheel 18. The flywheel 18 is also drivably connected to shaft 19 rotatablyfastwith a driven member 20 of an electrically operable clutch 22.
The clutch 22 has a driving member 23 rotatably fastwith an outputshaft of an internal combustion engine24,typicallya diesel engine.
A sensor 25 is provided for sensing any reduction in voltage supplied by the main generator and/or reduction in speed oftheflywheel 18 resulting from a fail in wind speed. When a reduction is sensed, a signal is provided to operate the clutch 22. On engaging the clutch, the energy stored in the flywheel turns the engine effecting a "crash start".
Slip in the clutch permits the flywheel to maintain its speed whilethe engine runs uptofull speed.The engine, once started, will pick up speed fairly rapidly but there is always a dwell period between the time that the engine starts and the time that full engine speed is reached. The continuously rotating flywheel causes the auxiliary generatorto produce electricity during the dwell period which provides virtually full powerforthe load. Relative rotation between the engine and flywheel diminishes to zero as the engine reaches full speed so that the engine then drives both the flywheel and the auxiliary generator.The electrical output characteristics of the auxiliary generator are virtually the same as those of the main generatorsothatthechangeoverfrom one generator to the other has minimal effect on voltage supplied. As soon as sufficient natural energy is available again,the clutch 22 is disengaged and the engine is stopped, e.g. by cutting off fuel supply, decompression, etc.
When starting the system from a stationary condition, the flywheel is rotated up to speed bythe engine through cyclic engagement of the clutch 22.
In Figure 2 parts corresponding to parts shown in
Figure 1 have the same reference numerals.
The auxiliarygenerator (e.g. an alternator) 16 and the engine 24 are mounted on a common chassis 25.
The rotor shaft 17 is rotatablymounted in plummer blocks 30 and is rotatably fast with pulleys 32, 33.
The rotor shaft 17 is drivably connected to one member (not shown) of an electromagnetic clutch 22 another member (not shown) of which is drivably connected to an output shaft 34 of the engine 24to form the aforesaid first transmission. The shaft 34 is rotatably fast with a pulley 35. The pulley 32 transmits drive through e.g. a toothed belt 36 to a pulley 37 which drives a flywheel (not shown in
Figure 2)within a housing 38 which is evacuated in use by a vacuum pump 39. The pulley 33 transmits drive through a belt 40 to a relatively larger pulley 42 on a first layshaft half 43. The second layshaft half44 is drivably connectable to the first layshaft half 43 in one rotational sense through a unidirectional clutch 45.Layshaft half 44 is rotatably fast with a pulley 46 of similar size to pulley 35 and drive can be transmitted to pulley 35 through a belt 47. The pulleys 33, 42, 46 and 35 with associated belts constitute a motoring drive train (constituting the aforesaid second transmission) which is operable as described below.
Where the Figure 2 system operates in the manner ofthe Figure 1 system the motoring drive train is not required and may be disconnected. It is envisaged that a suitable flywheel in an evacuated chamber could provide sufficientenergyforaround 2.5 minutes to maintain full load demand atthe auxiliary generator and it is anticipated that the flywheel could crash start the engine in 0.8 seconds.
However, there may be advantages in leaving the engine continuously coupled to the system with its fuel supply cut off; the engine being continuously motored by the rotor shaft 17, oil in the engine being circulated and a fuel pump thereof being primed. On reduction of natural energy to power generator 16, the drop in generated electricity could be suitably sensed and fuel would be supplied to the rotating engine to enable it to start immediately. However, it is envisaged that considerable energy could be used iftheengine24wererunatfull generatorspeed when motoring. Therefore the motoring drive train is used to provide a reduction drivethrough pulleys 33, 42 to motor the engine at reduced speed.When the engine starts after introduction of fuel and its speed increases, layshaft half 44 driven by the engine will eventuaily overrun layshaft half 43 of the motoring drive train.
The electromagnetic clutch 22 will, in this case, normally be replaced by a unidirectional clutch which will cause drive to be transmitted from the engine 24tothe generator 16to drivethegenerator during overrun in the motoring drive train. In such a case the pulley 32 may be replaced by a flywheel which will maintain rotation ofthe rotor shaft 17 during the time ittakesthe engine to build up speed from the point that fuel is introduced. The system does not therefore, in the latter mode, require storage of energy in the large flywheel in casing 38 as it is unnecessary to use energy in the flywheel to "crash start" the engine.
Instead of using a diesel engine a spark ignition engine could be used and the ignition circuit controlled for starting and stopping purposes.
As well as being used in a wind driven generator application, the system according to the invention could be used where the main generator is driven by some other form of natural energy. The auxiliary generatorwouldthen become operative to generate electricity when the other form of natural energy were interrupted or reduced.
Claims (30)
1. An electricity generating system which utilises a main generator to be powered by natural energy and an engine to power an auxiliarygeneratorwhen said natural energy is interrupted or reduced, the system comprising a connection between the generators to enable the main generator to drive the auxiliary generator as a motorduring normal periods, and an energy storage device which is operated during normal periods whereby during changeover from drive to the auxiliary generator by said main generatorto drive by said engine, said energy storage device will drive said auxiliary generator so as to produce an electrical output.
2. An electricity generating system according to
Claim 1 in which the connection between the two generators is an electrical connection.
3. An electricity generating system according to
Claim 1 or2 in which the energy storage device is a flywheel.
4. An electricity generating system according to
Claim 1,2 or3 in which the energy storage device is driven by the auxiliary generatorwhen the auxiliary generator is driven as a motor.
5. An electricity generating system according to
Claim 4 in which the mechanical energy storage device is mounted on or driven through a transmission from a shaft ofthe auxiliary generator.
6. An electricity generating system according to any preceding claim in which clutch means is provided in a drive transmission between the auxiliary generator and the engine.
7. An electricity generating system according to
Claim 6 in which the clutch means is in a non drive-transmitting condition when the auxiliary generator is driven by the main generator.
8. An electricity generating system according to
Claim 7 in which the clutch means is placed in a drive transmitting condition as a result of interruption or reduction of said natural energy so that drive will be transmitted from said energy storage device to the engine which is started to drivethe auxiliary generator.
9. An electricity generating system according to
Claim 7 or 8 in which the energy storage device simultaneously drives the auxiliary generator so as to provide electrical output from the auxiliary generator while the engine picks up speed.
10. An electricity generating system according to
Claim 8 or 9 in which control means is provided which senses a change in output from the main generator to enable a clutch operating signal to be produced.
11. An electricity generating system according to any of Claims 1 to 7 in which the auxiliary generator is arranged to motor the engine during said normal periods.
12. An electricity generating system according to
Claim 11 and where clutch means is provided in a drive transmission between the auxiliary generator and the engine, in which second clutch means is provided in a second drive transmission through which the auxiliary generator motors the engine during said normal periods.
13. An electricity generating system according to
Claim 12 in which the first clutch means is in a non drive-transmitting condition when the second clutch means transmits drive from the auxiliary generator to the engine.
14. An electricity generating system according to
Claim 12 or 13 in which the second clutch means is in a non drive-transmitting condition when the first clutch means transmits drive from the engine to the auxiliary generator.
15. An electricity generating system according to Claim 12,13 or 14 in n wh in whichthefirstand/orsecond clutch means are unidirectional.
16. An electricity generating system according to any of Claims 11 to 15 in which control means is provided which senses a change in output from the main generator and provides a signal in response to which the motoring engine will start so as to drive the auxiliary generator.
17. An electricity generating system according to
Claim 16 in which the control means controls the introduction offuel into the engine.
18. An electricity generating system according to any of Claims 12to 17 in which the energy storage device drives the auxiliary generator while the engine picks up speed.
19. An electricity generating system according to any of Claims 1 2to 18 in which the auxiliary generator can either motor the engine during normal periods through the second transmission or can be connectedtotheenginethroughclutch meansto drive the engine which is started to drivethe auxiliary generator on interruption or reduction of natural energy.
20. An electricity generating system according to
Claim 19 in which a further energy storage device is provided which is used to drive the engine through the clutch means during interruption or reduction of natural energy.
21. An electricity generating system which utilises a main generator to be powered normally by natural energy, and an engine to power an auxiliary generator during periods when said natural energy is interrupted or reduced, the system comprising a connection betweenthetwogeneratorstoenable the main generatorto drivetheauxiliarygenerator during normal periods, drive transmission means through which drive is transmitted to motorthe engine during normal periods, and control means which causes the motoring engine to start so asto drive the auxiliary generator during a period when said natural energy supply is interrupted or reduced.
22. An electricity generating system according to
Claim 21 in which the control means controls the introduction of fuel into the engine.
23. An electricity generating system according to
Claim 22 in which an energy storage device is driven bythe auxiliary generator during normal periods.
24. An electricity generating system according to
Claim 21,22 or 23 in which the engine is arranged to drive the auxiliary generator through a first transmission and the auxiliary generator is arranged to motorthe engine through a second transmission.
25. An electricity generating system according to
Claim 24 in which drive through said first and second transmissions is through respective first and second clutches.
26. An electricity generating system according to
Claim 25 inwhichthefirstclutch is in a non drivetransmitting condition when the second clutch transmits drive from the auxiliary generator to the engine.
27. An electricity generating system according to
Claim 25 or26 in which the second clutch is in a non drive-transmitting condition when the first clutch transmits drive from the engine to the auxiliary generator.
28. An electricity generating system according to
Claim 25,26 or27 in which the first and/or second clutches are unidirectional.
29. An electricity generating system according to any of Claims 24 to 28 in which the second transmission includes a reduction drive.
30. An electricity generating system constructed and arranged substantially as described herein with reference to Figure 1 or Figure 2 ofthe accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB868611198A GB8611198D0 (en) | 1986-05-08 | 1986-05-08 | Electricity generating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8710879D0 GB8710879D0 (en) | 1987-06-10 |
| GB2190554A true GB2190554A (en) | 1987-11-18 |
Family
ID=10597503
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB868611198A Pending GB8611198D0 (en) | 1986-05-08 | 1986-05-08 | Electricity generating system |
| GB08710879A Withdrawn GB2190554A (en) | 1986-05-08 | 1987-05-08 | An electricity generating system |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB868611198A Pending GB8611198D0 (en) | 1986-05-08 | 1986-05-08 | Electricity generating system |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB8611198D0 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0666633A1 (en) * | 1993-02-22 | 1995-08-09 | Tai-Her Yang | An electric energy storage and distribution system of differential distribution type |
| DE10044096A1 (en) * | 2000-09-07 | 2002-04-04 | Aloys Wobben | Off-grid and method for operating an off-grid |
| US7141887B2 (en) * | 2003-10-24 | 2006-11-28 | Shinko Electric Co., Ltd. | Power supply unit, generator, and wind turbine generator |
| WO2007093022A1 (en) * | 2006-02-16 | 2007-08-23 | Araujo Vicente Dos Reis | Electric power amplification and generation system |
| US7514808B2 (en) | 2004-09-24 | 2009-04-07 | Aloys Wobben | Regenerative energy system |
| US7671481B2 (en) * | 2005-06-10 | 2010-03-02 | General Electric Company | Methods and systems for generating electrical power |
| EP2296247A2 (en) | 2002-03-08 | 2011-03-16 | Aloys Wobben | Separate network and method for operating a separate network |
| CN101207313B (en) * | 2006-12-22 | 2011-03-30 | 财团法人工业技术研究院 | Power generation device with composite generator and power generation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB810139A (en) * | 1956-06-18 | 1959-03-11 | Blackstone & Co Ltd | Improvements in stand-by electricity generator installations |
| GB867839A (en) * | 1957-03-01 | 1961-05-10 | Blackstone & Co Ltd | Improvements in stand-by electric generators |
| GB1158500A (en) * | 1965-12-06 | 1969-07-16 | Kloeckner Humboldt Deutz Ag | Emergency Generating Set |
| GB1257765A (en) * | 1969-02-26 | 1971-12-22 | ||
| GB1309858A (en) * | 1969-09-16 | 1973-03-14 | Heemaf Nv | System for providing an uninterrupted power supply |
| GB2055259A (en) * | 1978-02-23 | 1981-02-25 | Dvorak S T | Generating power from alternative sources |
| US4366388A (en) * | 1979-04-30 | 1982-12-28 | Wilkerson A W | Energy utilization circuit and method |
-
1986
- 1986-05-08 GB GB868611198A patent/GB8611198D0/en active Pending
-
1987
- 1987-05-08 GB GB08710879A patent/GB2190554A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB810139A (en) * | 1956-06-18 | 1959-03-11 | Blackstone & Co Ltd | Improvements in stand-by electricity generator installations |
| GB867839A (en) * | 1957-03-01 | 1961-05-10 | Blackstone & Co Ltd | Improvements in stand-by electric generators |
| GB1158500A (en) * | 1965-12-06 | 1969-07-16 | Kloeckner Humboldt Deutz Ag | Emergency Generating Set |
| GB1257765A (en) * | 1969-02-26 | 1971-12-22 | ||
| GB1309858A (en) * | 1969-09-16 | 1973-03-14 | Heemaf Nv | System for providing an uninterrupted power supply |
| GB2055259A (en) * | 1978-02-23 | 1981-02-25 | Dvorak S T | Generating power from alternative sources |
| US4366388A (en) * | 1979-04-30 | 1982-12-28 | Wilkerson A W | Energy utilization circuit and method |
Non-Patent Citations (2)
| Title |
|---|
| WO A1 82/00927 * |
| WO A1 85/01021 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0666633A1 (en) * | 1993-02-22 | 1995-08-09 | Tai-Her Yang | An electric energy storage and distribution system of differential distribution type |
| DE10044096A1 (en) * | 2000-09-07 | 2002-04-04 | Aloys Wobben | Off-grid and method for operating an off-grid |
| EP2296247A2 (en) | 2002-03-08 | 2011-03-16 | Aloys Wobben | Separate network and method for operating a separate network |
| US7141887B2 (en) * | 2003-10-24 | 2006-11-28 | Shinko Electric Co., Ltd. | Power supply unit, generator, and wind turbine generator |
| US7514808B2 (en) | 2004-09-24 | 2009-04-07 | Aloys Wobben | Regenerative energy system |
| US7671481B2 (en) * | 2005-06-10 | 2010-03-02 | General Electric Company | Methods and systems for generating electrical power |
| WO2007093022A1 (en) * | 2006-02-16 | 2007-08-23 | Araujo Vicente Dos Reis | Electric power amplification and generation system |
| CN101207313B (en) * | 2006-12-22 | 2011-03-30 | 财团法人工业技术研究院 | Power generation device with composite generator and power generation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8710879D0 (en) | 1987-06-10 |
| GB8611198D0 (en) | 1986-06-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |