WO2010049492A2 - Composite system for generating and electromechanically storing electrical energy - Google Patents

Composite system for generating and electromechanically storing electrical energy Download PDF

Info

Publication number
WO2010049492A2
WO2010049492A2 PCT/EP2009/064301 EP2009064301W WO2010049492A2 WO 2010049492 A2 WO2010049492 A2 WO 2010049492A2 EP 2009064301 W EP2009064301 W EP 2009064301W WO 2010049492 A2 WO2010049492 A2 WO 2010049492A2
Authority
WO
Grant status
Application
Patent type
Prior art keywords
storage
energy
composite system
characterized
system according
Prior art date
Application number
PCT/EP2009/064301
Other languages
German (de)
French (fr)
Other versions
WO2010049492A3 (en )
Inventor
Edmund Wagner
Original Assignee
Edmund Wagner
Priority date (The priority date 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 date listed.)
Filing date
Publication date

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03GSPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G3/00Other motors, e.g. gravity or inertia motors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D9/00Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10Combinations of wind motors with apparatus storing energy
    • F03D9/13Combinations of wind motors with apparatus storing energy storing gravitational potential energy
    • F03D9/16Combinations of wind motors with apparatus storing energy storing gravitational potential energy using weights
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage
    • Y02E60/16Mechanical energy storage, e.g. flywheels

Abstract

An electromechanical composite system is proposed for storing electrical energy (current) which had been acquired primarily from renewable energies. To this end, according to the invention a current storage means in electromechanical systems is proposed, said means comprising alternatively connectable motors and generators depending on requirements, said motors and generators connected to travelling weights. The current acquired from renewable energies is fed to said motors, which in turn lift the travelling weights from depths, such as a shaft, by way of a cable winch, and thereby impart potential energy to said weights. As users require electrical energy (current), the travelling weights are dropped back into the shaft, wherein said weights convert the released potential energy to electrical energy by way of the cable hoist and the cable winch together with the generators.

Description

Composite system for generating and electromechanical storage of electrical energy

The present invention relates to a composite giespeichersystems system for storing generated by a renewable energy source of electrical energy using an electromechanical energy.

Electric current has the property to be consumed at the same time having to where it is produced, ie, generated either by thermal power equipment, wind turbines, photovoltaic and other electricity generators such as hydroelectric plants. Using Großvertei- distribution systems (networks), which are common today, sets a certain balance between generated and consumed power. In this case, in particular attempts to generate the electricity as required, with significant variations result from certain consumer properties.

For a long time searching for storage options to compensate for such fluctuations in energy consumption. Here should be mentioned: hydropower storage plants in which surplus times water is pumped from a lower reservoir to a higher reservoir lying in power. These are referred to as pumped storage plants. If necessary, water is drained back down and a turbine supplied by a Elektrogenera- gate is driven to the power supply. Another possibility of energy storage systems can be seen in compressed air- (Pressgas-) into which gas or air is injected into underground caverns in the peak period of electricity generation from which it discharges it when you need it to drive turbines and generators.

A simple way to save power by chemical means, a battery or an accumulator write current in the moment in which it is needed by the consumer. However, the capacity of currently available batteries are far too low to use them industrially.

The first two electromechanical storage methods are, however, in contrast to the accumulator heavily lossy. Losses of up to 60% have to be taken into account in the calculation between supply and recovery of electric power. Moreover, these methods require significant investment, also received their depreciation in economic losses. In addition, these systems have a significant space requirement. For this reason, the procedure referred to only for very specific applications, for example in the traction current can gain general acceptance have.

Special fluctuations plants producing electricity from renewable or renewable energy sources such as wind power, photovoltaic, etc. The electricity from wind power requires wind, solar power is generated only when the sun shines, so by day. In addition, conversely, that might power is being generated in larger quantities from these sources of energy when it is not needed, the investments must be nonsensical off thus, as currently effective electricity storage to the required extent is not possible.

Recent Considerations assume the plurality of batteries (rechargeable batteries) in future elec- rofahrzeugen to use as an electrical buffer or cache.

All these methods consistently have deficiencies because they are very expensive and also have poor efficiency, thus high losses. On the other hand, they are tied to specific geographic conditions, which are not found everywhere, especially in heavily populated areas. Another disadvantage is the fact that it always requires a longer lead time until these systems go into operation. This two-way: while storing and when retrieving the stored energy. In particular, it can not be said systems to simultaneously store energy and release from memory.

The present invention is over this prior art, the object of avoiding the disadvantages mentioned and to provide a system which makes it possible to store the short term provided from renewable sources of energy, if there is no demand for the entire energy source is and of releasing the energy in the short term , when the power demand by the renewable energy source can not be met.

This object is inventively achieved by a composite system of a power source and an electro-mechanical energy storage, wherein the power source and the electro-mechanical energy accumulators are electrically connected to each other, wherein the electro-mechanical energy store comprises a storage mass, an electric generator and an electric motor, wherein the storage mass is connected via a fastening device to a shaft of elec- step generator and a shaft of the electric motor, wherein the thermal mass is so driven with the aid of the electric motor, that it overcomes a height difference and increase its potential energy, and wherein the storage mass when it overcomes a height difference so that its potential energy decreases, drives the electric generator arrival. The energy source in the sense of the present invention is preferably a renewable energy source, that in particular a hydroelectric power plant, a wind turbine, a photovoltaic system, an ocean thermal power plant, a tidal power plant, or a geothermal power plant, including

The essence of the invention is within a composite system consisting of one or more renewable energy sources based on renewable energy sources on one side and at least one installation, which electric as storage process energy into potential energy and vice versa, the potential energy as needed into kinetic energy and these in which is to be converted back to electrical energy in a position referred to in this application as well as an energy store, and ultimately out of the chain of consumers, wherein in one embodiment a central controller controls the supply and discharge of current, as required or . controls, comparable to an open or closed loop.

In one embodiment of the invention, the electromechanical energy storage forms a system, in which pulled by electrical energy via a winch, a driving weight up (eg in excess of electrical energy) and in which this weight, in turn, also via said winch for driving an electrical generator is used when electric e nergy is needed. The transition from one to the other operation (operating parameters) is to take place largely without losses and in no switching or switching time.

In a preferred embodiment, the inventive system comprises at least two electro-mechanical energy storage. Such a tandem arrangement of at least two electro-mechanical energy storage in the inventive network system has the advantage that energy can be stored, that is, is pulled a memory by weight upwards, while at the same time energy is released, ie, the second memory by weight is discharged and thereby the electrical generator drives.

In one embodiment of the invention, the composite system is integrated into existing large energy connections, which are common in the form of electricity networks today, if greater distances between the individual participants of the composite system of power generation and energy storage devices and consumers to be overcome.

An important requirement for the inventive electromechanical memory system is the largest possible difference in height (stroke) of the storage masses between upper and lower potential point. In one embodiment of the invention, the maximum difference in height or hub is at least 100 m, but preferably more than 1200 m. The storage capacity of the electro-mechanical energy store is determined in addition to the hub also and above all by the mass of the storage mass, which is to be moved up and down. This should, in order to achieve high storage capacity, in a range from 500 tons to 1,000 tons, but preferably be more than 1000 t.

In one embodiment of the invention, the storage masses, in order to reach the required stroke, disposed in or on a high-rise building. Here, in particular shafts are within the high-rise, as already provided in conventional buildings in the form of elevator shafts to accommodate the storage masses. The local storage of electrical energy with the aid of the composite system of the invention in high-rise buildings offer therefore, since the electric power source may be provided for example by a photovoltaic glazing or façade cladding of the high-rise building in an embodiment of the invention, so that the high-rise building by a separate power supply features. The electrical energy produced during the day can, so far as it is not supplied directly to the consumption, are converted into potential energy storage mass by being pulled in or on the high-rise upwards. In the dark, when the photovoltai- rule elements produce no more electric current, the electric consumption of the tower is covered in this embodiment in that the storage masses driving their associated generators.

In an alternative embodiment, the storage masses are arranged in a substantially vertical mine shaft.

In one embodiment of the composite system of the invention, the electromechanical energy storage are seen arranged in disused coal mines which originally served the extraction of coal minerals, among others. Former mine shafts of such facilities may have in excess of 3,000 meters depths. In addition, electro-mechanical energy storage according to the invention can be stably on existing land, so in Erdhöhe be mounted, which with corresponding ups meets all the requirements of stability, similar as was already the case in the former elevator system of the coal mine.

Alone in the Ruhr lie still more than 200 former coal mines, their wells may be used to implement the electromechanical energy storage according to the invention.

Alternatively, new wells may be drilled in addition to the existing shafts of mines which have a minimum of space requirement at the surface. The sinking of drilling systems can be made consistent. In an alternative embodiment, the electro-mechanical energy storage are connected to a floating body so that the storage masses are arranged in the operation of the system under the floats in the water.

In this way, systems can be realized in which the storage masses essentially can be drained into the underlying water from a float from vertically downwards. Such systems are preferably installed off-shore so that large ocean depths be available under the floating body to provide the required large stroke and the associated large potential difference across the storage masses.

A floating body according to the present invention is a ship, a pontoon or the like.

In a further alternative embodiment, the electro-mechanical energy store can be connected to a fixedly anchored in the sea bed platform.

In one embodiment, the electro-mechanical energy storage, but in particular the storage mass is arranged in or on a tower of a wind turbine. Such an embodiment is advantageous because it allows storage of the electrical energy at the place of production.

Here, an embodiment is advantageous in which a rotor shaft of the wind turbine, that is, the shaft of the rotor vane, is mechanically coupled to the electrical generator. In DIE sem case, the generator of the power source and the generator of the electromechanical E- nergiespeichers are identical. In addition to the already existing generator, the nacelle of the system takes on the winch and the motor in one embodiment.

Further advantages, features and possible applications of the present invention will become apparent from the following description of several embodiments and the associated figures.

1 shows schematically the structure of an electromechanical nergiespeichers E- invention. Figure 2 shows the arrangement of two inventive electro-mechanical energy storage in a mine shaft.

Figure 3 shows an electro-mechanical energy storage according to the invention, wherein the storage mass is arranged on an inclined plane. Figure 4 shows an electro-mechanical energy storage according to the invention in a

Skyscraper.

Figure 5 shows two electro-mechanical energy storage according to the invention, arranged on a floating pontoon.

Figure 6 shows an inventive arrangement in a wind power plant,

Figure 7 shows schematically the structure of an embodiment of the composite system of the invention.

Figure 8 shows a detailed view of the center of FIG. 6

Figure 9 shows a detailed view of the controller of FIG. 7

FFiigguurr 1100 shows schematically the construction of an alternative embodiment of the composite system of the invention.

Figure 11 shows schematically the construction of another embodiment of the composite system of the invention,

Figure 12 shows three graphs which a smoothing of the natural fluctuations of renewable energy plants (eg wind turbines) by the novel

demonstrate energy storage systems.

The schematically illustrated in Figure 1 electromechanical energy storage according to the invention comprises in addition to a storage mass, that the hanging driving Weight 1, an electric motor 2, which is supplied with electric power from the grid or electricity systems, is driven in the illustrated embodiment of a wind turbine to the hanging conveying driving weight 1 upwards so that it picks up potential energy.

Further, the electro-mechanical energy storage comprises an electric generator 3, which receives its potential energy when descending of the travel weight and converts it into electrical energy, which is in turn into the mains or supplied directly to consumers. The generator 3 represented in Figure 1 is a three-phase generator, which has an interworking for 50 Hertz.

A winch 4, may be needed by shaft couplings 5 ​​frictionally mechanically or electro-mechanically to the electric motor 2 or to the electric generator 3, or be coupled form-fitting manner. the traction cable is transmitted to the winch 4 6 which is connected to the driving hanging weight of 1, up or unwound as needed. The pull rope 6 is in the illustrated embodiment to increase safety and ensure a high force receiving also from a package of a plurality of steel cables.

The riding weight 1 can be similarly performed an elevator car or free-floating as in the embodiment of Figure 1 in a rail system. The latter arrangement has the advantage that the vehicle weight 1 at any time and at any height stopped independently of the cable and may be fixed or locked for security reasons. In addition, a maximum earthquake safety is achieved.

The engine shown in Figure 1 / generator unit winch 2, 3, 4 is illustrated in the following figures 2 to 6 only schematically by the reference numerals 2, 3 and 4. FIG.

In these Figur2 to 6 and a guide roller for the cable is shown in each case. The construction may alternatively, as far as allowing the geometric relationships, even without an environmental are running deflection roller. However, this has the advantage that the motor / generator unit can be constructed with a cable winch on solid ground and no special supporting structure above the shaft must be disposed.

The system according to the invention with two (or alternatively more) driving weights 1, as it is by way of example shown in Figure 2, includes two electro-mechanical storage, ie parallel systems A and B, wherein the one example A (at a time when electrical energy current) takes up, but while the other B outputs electric energy (current).

In this case, one it does not matter on which lift the driving weights 1A, B this straight overall schieht. This means that the driving weights 1A, 1B must not be driven necessarily always up to the top or bottom dead center. You can reverse in the opposite direction their way and at any point, depending on the needs of the electrical demand situation.

It can measure easily the tremendous storage capacity can be achieved by the inclusion of 100 or 200 former mines and possibly even further down brought new shafts, which are connected to the inventive composite electrical system. These again is the great flexibility of such a composite system which can adapt to the respective delivery and consumption situation of electrical energy to the second.

Here are some numerical examples are given:

A driving weight one with a mass of, for example, 1,000 tons is made of cast steel. It has in a cross section of 4 by 4 meters, a vertical length of about 8 meters, and fits well with these dimensions in a former mine shaft. An alternative driving Weight 1 concrete has a length of about 22 meters for the same cross-section. Such driving weight 1 leads to a storable potential electrical power of 8,000 kWh and more. For example, with 200 interconnected shaft systems, these are up to about 1, 600 MWh of available electric capacity which can be accessed in seconds.

The electro-mechanical losses of such a system of the electro-mechanical storage system according to the invention be no more than about 5% to 8%.

The use of such a composite system could be used to store almost the entire electrical wind energy produced in northern Germany, which is then preferably not fed directly into the network with the associated disadvantages, but in the described composite storage system with all available pits in which electromechanical energy storage according to the invention are installed to provide a continuous supply of electricity from renewable energy safely. This is in contrast to the current situation where only an intermittent supply is possible into the net with all the associated disadvantages.

The electromechanical storage installation according to the figures 1 to 6 is equipped with an electronic controller, by means of which all the monitored data can be recorded, in particular the relative position of the driving weights 1 as well as the respective electrical data serving an automatically running vehicle operation. In this case, all electrical and mechanical actual and desired values ​​are recorded.

A pit according to Figure 2 is provided in an alternative embodiment not shown, with an additional device for the recovery of geothermal energy.

In the embodiment shown in Figure 3 embodiment, the driving Weight 1 is in the form of a truck on rails 7 or rolls not perpendicular, as shown in Figures 1 and 2 but guided on an inclined plane, as they result from a corresponding ground formation (slope) yields ,

Figure 4 shows a further application of the electromechanical energy storage device according to the invention: This will be installed in this case, in one or more additional exempted or elevator shafts built a skyscraper. This field of application has the advantage that such a high-rise building can be performed independent of an external supply of electrical energy from the grid, eg by photovoltaic panels installed on the windows and other surfaces, in the illustrated embodiment, transparent polymer modules, power for days and on weekends provide energy (power), which are coupled to the electromechanical storage facilities and so save electric energy which can be retrieved during the office and operating times and used. Such a high-rise would be self-sufficient from the public electricity supply.

The guide of the driving weights 1 in an alternative embodiment, not shown, not only within of the tower in the said shafts, but outside, for example along the facade occur.

The driving weights 1 have in the application described in or on the high-rise less mass to run as above for the large-scale plants.

In the embodiment shown in Figure 5 embodiment of the composite system of the invention, the electro-mechanical energy storage are installed on a floating pontoon 8 in order to use the sea depth underneath for the driving weights. 1 The operation is similar to the above examples, wherein the ship or pontoon by a suitable anchoring and / or by GPS is automatically held in position by known technology at sea. Other technologies that are known from the marine oil production for offshore drilling platforms (jack-up, semi-submersible drilling vessel) may be used.

In the illustrated embodiment, the electro-mechanical energy storage with an Ocean thermal energy conversion (OTEC technology; Ocean Thermal Energy Conversion) connected to store the product obtained from the temperature gradient of the water electric energy. Many such marine systems can be summarized a large scale to a composite system, as has been indicated above for systems on land.

In Figure 6, the previously-indicated arrangement was gem. Figure 1 incorporated with a driving Weight 1 directly into a wind power plant in addition to the existing units, so that on the spot where the weather-related surplus and deficit capacity is obtained, a smoothing of the power excursions is made. And surplus power is obtained, the driving weight 1 is pulled up, wherein power deficiency is also generated by low power driving of the traveling weight and fed.

In this case, in the embodiment shown in Figure 6, the shaft of the generator 3 is coupled depending on the operating condition of the plant with the rotor shaft or to the shaft of the winch. 4 The Ro door shaft drives in accordance with the wings pending wind the shaft of the generator 3. The shaft of the motor 2 to the shaft of the winch is coupled to the same. The output power of the generator 3 is fed into the supply network, and simultaneously or alternatively drives the motor 2 in order to pull up the weight driving. 1 If the power generated by the wind is below a certain level, the coupling between the motor 2 and capstan 4 is released and is coupled instead, the shaft of the generator 3 to the winch 4 so that the winch 4 is additionally in running off driving Weight 1 instead or the wind turbine rotor drives the generator. 3 The riding weight 1 has in this case of course involves a smaller mass in the feed before indicated instances, for example, 100 tons, the stroke between the upper and lower dead point corresponds approximately to the height of the tower of the wind turbine. This currently amounts to some 100 meters and more. The advantage of this arrangement is that once, storage capacity is already in place, where the significant natural energy differences occur without the use of a power distribution network provided so that current in already smoothed form, without strong power fluctuations, leaving the wind turbine.

Another advantage of this arrangement is the fact that the system no longer berschussleistung because Ü such must be caused by high wind speeds or when there is no demand for electricity shut off. The excess electricity would go directly into the plant's own Speicheran-. In addition, it is noted that the tensile force of driving the weight 1 to stabilize the system wind turbine contributes. In addition, a car may be attached to this driving weight 1 which can serve as an elevator for maintenance personnel (not shown). Also not shown are guide rails, which are of course necessary for lateral control and stabilization of the driving weight. 1 it should also be mentioned that the riser must be installed ladder inside the tower so that the movements of the accelerator weight 1 not be hindered.

Another possible arrangement of driving the weight 1, or an additional driving weight is outside the tower annular conceivable (not shown).

Figure 7 shows an exemplary embodiment of the composite system of the invention of a wind turbine wind turbine, a photovoltaic plant PVA, an electromechanical E- nergiespeicher EES and a plurality of consumers or customers ABN. The wind turbine power generator, PVA and the collector ABN are connectedness a center ZEN each other to.

The center ZEN operates as a distributor of the electric energy. In the center of the current demand for electrical energy of consumers ABN is also detected as the electrical energy generated at the time of the regenerative energy sources PVA, DEA. Is provided by the producers PVA, WEA amount of energy greater than the current demand of the customers ABN, so energy is stored in the electro-mechanical energy storage EES in the manner described in reference to Figures 1 to 5 way. In cases where the demand for electric power by consumers ABN is greater than that currently provided by the renewable energy sources PVA, WEA amount of energy, the center ensures that more energy from the electromechanical energy storage EES is retrieved by the potential energy one or more storage mass is converted to electrical energy which is provided to consumers ABN available.

The composite system shown schematically in Figure 7 shows a small-scale plant, which is provided in the illustrated example, for a single small community, it is possible in this way to supply a large extent self-sufficient with electric power from renewable energy sources.

Figure 8 shows an enlarged view of the center ZEN of Figure 7. This works as a distribution unit and has access to electric power (current) from the power sources WEA and PVA, an element to which the Summary as well as a control unit 1 on. The control unit 1 has entrances and exits for the electromechanical energy storage EES and exits to customers / consumers ABN. Control systems offer thereby to EFR (European radio ripple control) on long wave radio base and based SMART GRID. Both systems will not be further described here.

In Figure 9, again, the control unit 1 is shown enlarged in Figure 8 and their function simplifies indicated.

In Figure 10, an alternative embodiment of the composite system of the invention is illustrated, which is intended for a large-scale application for the supply of entire regions or countries compared to the example shown in Figure 7 system shown in Figure 10th For this purpose, the system comprises a plurality of regenerative energy sources, photovoltaic systems here PVA and wind turbines wind turbine and a plurality of customers or consumers ABN and a plurality of electro-mechanical energy storage. The composite system shown in Figure 10 is integrated into an existing power grid, so that for example existing lines between consumers ABN and a center ZEN can be used. So parallel structures and associated increased costs can be avoided. Especially here and gem in the system. 11, the aforementioned control systems ERA and smart grid can be advantageously used.

The composite systems shown in Figures 7 and 10 have a parallel connection of the individual regenerative energy sources WEA, PVA, of the electro-mechanical energy storage EES and the collector ABN, ie the entire composite system has a star-shaped structure in which each element of PVA, WEA, ABN , EES is connected via a separate line with the center ZEN. In contrast, the alternative arrangement of the composite system of Figure 11 shows a series circuit in which initially the individual energy sources PVA, WEA, the individual customer ABN and the individual electro-mechanical energy storage systems EES are interconnected. In this case, a plurality of sources of PVA, WEA, ABN customers and energy storage EES is connected to only a single central duct with the center ZEN.

The composite systems of the invention shown in Figures 7, 10 and 11 are AC systems, wherein quite alternative embodiments are possible which operate with DC or AC. In particular, DC systems are to be mentioned as the highest source of renewable energy sources DC and also greater distances can be bridged cost with direct current.

At the request of AC in an embodiment, the electro-mechanical energy storage system can act as an electromechanical inverter. For example, while photovoltaic systems generate as a renewable energy sources direct current which is used for the storage masses of the electro-mechanical energy storage system (driving Weight 1) to raise with the aid of DC motors, the storage masses can operate an alternating current generator during the removal of electrical energy from the electro-mechanical energy storage system.

In Figure 12, three power states A, B, C are seen, whereby only magnitudes are intended to indicate on the abscissa the time intervals 0-1, 0-10 and 0-100. In the graph, A you can see the timing of the output power W, as results for example in a wind turbine due to the fluctuations in air movements. The highly variable performance-there is hardly usable in a power grid. The supply of power generated provides the network operator with considerable problems. With an inventive energy storage system, for example, .as shown in Figure 6 within a wind power plant, may the strongly fluctuating in time curve are advantageously smoothed (curve at n). One could also speak of a power buffer, since n is far above the zero power in this storage system. This means that the performance below n can be regarded as continuous power.

The graph B summarizes a plurality of power curves according graphics A together as they are in the operation of a plurality of wind power plants with storage unit according to Figure 6 results in the smoothing of the power supply to the power grid in accordance with a memory system. Figure 2 provided that sammenfasst mathematically to-the power of about 100 wind turbines according to FIG 6 and smoothes. The curves ni, n 2 and n 3 are intended to indicate various demand curves to which the system has been activated and supplied. The graph C shows the course finally by use of a plurality of wind turbines or other systems of renewable energy and a plurality of storage systems, such as 1 10 and 1 to indicate this, the figures for a complete bulk system. The feed e- lectrical energy from renewable sources of energy in the power grid becomes constant by the inventions dung modern composite system substantially.

For the purpose of original disclosure it is noted that all features as will be apparent from the present description, drawings and claims for a skilled person, even though they have been described specifically only in connection with certain other features, both singly and in any combinations with others of the features disclosed herein or groups of features can be combined, unless this has been expressly excluded or technical factors make such combinations impossible or meaningless. only for brevity and readability of the description is omitted WE gen on comprehensive explicit representation of all conceivable combinations of features here.

While the invention is described in detail in the drawings and foregoing description has been shown and described, this illustration and description is merely exemplary and is not intended as a limitation of the scope, so as defi ned by the claims is. The invention is not limited to the disclosed embodiments.

Modifications of the disclosed embodiments will be apparent to those skilled in the drawings, the specification and the appended claims. In the claims the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. The mere fact that certain features are claimed in different claims does not exclude the combination. Reference signs in the claims should not be construed as limiting the scope.

Claims

P atentanspr ü che
having 1 network system from an energy source and an electro-mechanical energy storage, wherein the power source and the electro-mechanical energy accumulators are electrically connected to each other, wherein the electro-mechanical energy storage, a storage mass (1), an electric generator (3) and an electric motor (2), wherein the storage mass (1) via a securing means (4, 6) is connected to a shaft of the electric generator (3) and a shaft of the electric motor (2), wherein the storage mass (1) by means of the electric motor (2) is so driven that they a height difference overcomes and increases their potential energy, and wherein the storage mass (1) when it overcomes a height difference so that its potential energy decreases, drives the electric generator (3).
2. The composite system according to claim 1, characterized in that it comprises at least two electro-mechanical energy storage.
3. The composite system according to claim 1 or 2, characterized in that the sources of energy Ie is a renewable energy source.
4. The composite system according to one of claims 1 to 3, characterized in that the mass of the storage mass (1) in a range of 500 to 1000 t t and preferably more than 1000 t.
5. The composite system according to one of claims 1 to 4, characterized in, however, that the storage mass (1) has a maximum stroke of at least 100 m, preferably of more than 1200 m.
6. The composite system according to one of claims 1 to 5, characterized in that the storage mass (1) are guided on an inclined plane.
7. The composite system according to one of claims 1 to 5, characterized in that the storage mass (1) are arranged in or on a high-rise building.
8. The composite system according to claim 7, characterized in that the storage mass (1) are arranged in one or more wells, preferably in an elevator shaft, in the interior of the tower.
9. The composite system according to claim 7 or 8, characterized in that the renewable energy source is formed of photovoltaic elements on the facade surface of the tower.
10. The composite system according to one of claims 1 to 5, characterized in that the storage mass (1) are arranged in a substantially vertical mine shaft.
11. The composite system according to one of claims 1 to 5, characterized in that the electromechanical energy storage are connected to a floating body (8), so that the storage mass (1) are arranged in the operation of the system under the floats in the water.
12. The composite system according to one of claims 1 to 5, characterized in that the electromechanical energy storage are connected to an off-shore platform, so that the storage masses (8) are arranged in the operation of the system under the platform in the water.
13. The composite system according to claim 1 1 or 12, characterized in that the renewable energy source is a marine thermal power plant for generating electrical energy from temperature differences in the sea water.
14. The composite system according to one of claims 1 to 5, characterized in that the storage mass (1) are arranged in or on a tower of a wind turbine.
15. The composite system according to claim 14, characterized in that a rotor shaft of the wind turbine is mechanically coupled to the electric generator (3).
PCT/EP2009/064301 2008-10-31 2009-10-29 Composite system for generating and electromechanically storing electrical energy WO2010049492A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200810054229 DE102008054229A1 (en) 2008-10-31 2008-10-31 Composite system for generating and electromechanical storage of electrical energy
DE102008054229.6 2008-10-31

Publications (2)

Publication Number Publication Date
WO2010049492A2 true true WO2010049492A2 (en) 2010-05-06
WO2010049492A3 true WO2010049492A3 (en) 2011-03-03

Family

ID=42096324

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/064301 WO2010049492A3 (en) 2008-10-31 2009-10-29 Composite system for generating and electromechanically storing electrical energy

Country Status (2)

Country Link
DE (1) DE102008054229A1 (en)
WO (1) WO2010049492A3 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102208885A (en) * 2011-05-03 2011-10-05 吉林大学 Phase change heat exchanger thermoelectric generation device
WO2012034104A1 (en) * 2010-09-10 2012-03-15 Whirl Energy, Inc. Energy storage devices and methods for using same
DE102010061846A1 (en) 2010-11-24 2012-05-24 Edmund Wagner Geothermal system for energy recovery from geothermal energy, comprises closed fluid-channeling system which has heat exchanger tube for accommodating fluid, where fluid-channeling system has pulsating device
WO2013050343A3 (en) * 2011-10-03 2013-06-06 GEORGITZIKI, Elpida Method and system for storage and recovery of electrical energy
GB2499007A (en) * 2012-02-02 2013-08-07 Impressive Engineering Ltd Underground energy storage well
WO2013124548A1 (en) 2012-02-24 2013-08-29 Aer Device and method for the eco-friendly storage of recoverable electrical energy with high overall energy efficiency
GB2503268A (en) * 2012-06-21 2013-12-25 James Bruce Johnson Electrical generator with lifted and lowed weight
GB2506133A (en) * 2012-09-20 2014-03-26 Warwick John Bergland Electrical energy storage and generating unit with suspended weight
WO2014131806A3 (en) * 2013-02-27 2014-12-24 Ocean Renewables Limited Gravitational potential energy storage
EP2826994A1 (en) * 2013-07-19 2015-01-21 Veit Müller Device for the mechanical storage of electrical energy / axial movement storage device
US20160040645A1 (en) * 2013-03-14 2016-02-11 Mgh S.A.S. Energy storage system deployed in a body of water
WO2018020092A1 (en) * 2016-07-25 2018-02-01 Mgh System for storing and producing electrical energy by gravity by virtue of solid linear and continuous masses

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010014342A1 (en) * 2010-04-09 2011-10-13 Werner Rau Method for storing electrical energy in vehicle e.g. car, during driving in downhill, involves reducing potential energy at specific value around specific losses by back converting assistance of power generators into electrical energy
DE102014008789B3 (en) * 2014-06-10 2015-02-26 Dieter Lüdorf Hollow body for ballast as train weight gives a drive via cable to the generator to generate electricity
DE102015120700A1 (en) 2015-11-29 2017-06-01 Carmen Lindner A process for power generation in the former Berg Bausch Eight plants
FR3053741A1 (en) * 2016-07-06 2018-01-12 Mgh storage system and produce electricity by gravity thanks to submersible ballast

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135440A1 (en) * 1991-10-26 1993-04-29 Erich Kettler Electric generating plant for mains peak load coverage - uses potential energy of weights lowered into underground storage for return to surface in off=peak periods
DE10037678A1 (en) * 2000-07-28 2002-02-14 Mathieu Ernst Ulrich Mechanical lift storage mechanism has solid matter or loose/liquid matter in containers that is raised; the energy expended to is recovered by lowering same mass, using electric generators
DE202004011770U1 (en) * 2004-07-28 2004-09-30 Brüggemann, Bernhard W. Energy storage equipment comprises weight on rope over pulley, with electrical machine to raise weight or generate electricity when it descends
GB2412697A (en) * 2004-03-30 2005-10-05 Primera Consultancy And Design Wind turbine
DE202006015999U1 (en) * 2006-10-19 2007-04-12 Dathe Jan Energy storage-and emergency power system, has fixed storage mass movably supported in vertical direction and in reverse manner by using economical power, where total storage capacity is freely variable by battery switch
DE102006003897A1 (en) * 2006-01-27 2007-08-02 Elotech Electronic Gmbh Wind powered generator with mechanical energy store having different sized masses connected to the main shaft by selected clutches and gearing
WO2009100211A2 (en) * 2008-02-06 2009-08-13 Launchpoint Technologies, Inc. System and method for storing energy

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135440A1 (en) * 1991-10-26 1993-04-29 Erich Kettler Electric generating plant for mains peak load coverage - uses potential energy of weights lowered into underground storage for return to surface in off=peak periods
DE10037678A1 (en) * 2000-07-28 2002-02-14 Mathieu Ernst Ulrich Mechanical lift storage mechanism has solid matter or loose/liquid matter in containers that is raised; the energy expended to is recovered by lowering same mass, using electric generators
GB2412697A (en) * 2004-03-30 2005-10-05 Primera Consultancy And Design Wind turbine
DE202004011770U1 (en) * 2004-07-28 2004-09-30 Brüggemann, Bernhard W. Energy storage equipment comprises weight on rope over pulley, with electrical machine to raise weight or generate electricity when it descends
DE102006003897A1 (en) * 2006-01-27 2007-08-02 Elotech Electronic Gmbh Wind powered generator with mechanical energy store having different sized masses connected to the main shaft by selected clutches and gearing
DE202006015999U1 (en) * 2006-10-19 2007-04-12 Dathe Jan Energy storage-and emergency power system, has fixed storage mass movably supported in vertical direction and in reverse manner by using economical power, where total storage capacity is freely variable by battery switch
WO2009100211A2 (en) * 2008-02-06 2009-08-13 Launchpoint Technologies, Inc. System and method for storing energy

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9059605B2 (en) 2010-09-10 2015-06-16 Saben Murray Energy storage devices and methods of using same
WO2012034104A1 (en) * 2010-09-10 2012-03-15 Whirl Energy, Inc. Energy storage devices and methods for using same
DE102010061846A1 (en) 2010-11-24 2012-05-24 Edmund Wagner Geothermal system for energy recovery from geothermal energy, comprises closed fluid-channeling system which has heat exchanger tube for accommodating fluid, where fluid-channeling system has pulsating device
CN102208885A (en) * 2011-05-03 2011-10-05 吉林大学 Phase change heat exchanger thermoelectric generation device
WO2013050343A3 (en) * 2011-10-03 2013-06-06 GEORGITZIKI, Elpida Method and system for storage and recovery of electrical energy
GB2499007A (en) * 2012-02-02 2013-08-07 Impressive Engineering Ltd Underground energy storage well
WO2013124548A1 (en) 2012-02-24 2013-08-29 Aer Device and method for the eco-friendly storage of recoverable electrical energy with high overall energy efficiency
FR2987516A1 (en) * 2012-02-24 2013-08-30 Aer Device and method for accumulating and recover energy
GB2503268A (en) * 2012-06-21 2013-12-25 James Bruce Johnson Electrical generator with lifted and lowed weight
GB2506133A (en) * 2012-09-20 2014-03-26 Warwick John Bergland Electrical energy storage and generating unit with suspended weight
WO2014131806A3 (en) * 2013-02-27 2014-12-24 Ocean Renewables Limited Gravitational potential energy storage
US9797384B2 (en) 2013-02-27 2017-10-24 Ocean Renewables Limited Gravitational potential energy storage
US20160040645A1 (en) * 2013-03-14 2016-02-11 Mgh S.A.S. Energy storage system deployed in a body of water
EP2826994A1 (en) * 2013-07-19 2015-01-21 Veit Müller Device for the mechanical storage of electrical energy / axial movement storage device
WO2018020092A1 (en) * 2016-07-25 2018-02-01 Mgh System for storing and producing electrical energy by gravity by virtue of solid linear and continuous masses

Also Published As

Publication number Publication date Type
WO2010049492A3 (en) 2011-03-03 application
DE102008054229A1 (en) 2010-05-12 application

Similar Documents

Publication Publication Date Title
Elghali et al. Marine tidal current electric power generation technology: State of the art and current status
US4302684A (en) Free wing turbine
Drew et al. A review of wave energy converter technology
US6097104A (en) Hybrid energy recovery system
Jaramillo et al. Using hydropower to complement wind energy: a hybrid system to provide firm power
Rehman et al. Pumped hydro energy storage system: A technological review
Hasan et al. Review of storage schemes for wind energy systems
US6023105A (en) Hybrid wind-hydro power plant
US4035659A (en) Electrical power-generation apparatus with rotary voltage transformer and integrated inertial energy storage
Zhixin et al. The key technology of offshore wind farm and its new development in China
US20130106105A1 (en) Multi-Megawatt Ocean Current Energy Extraction Device
Falnes et al. Ocean wave energy
US20100244450A1 (en) Wind and hydropower vessel plant
US20100013229A1 (en) Hybrid wave energy plant for electricity generation
Kaldellis et al. Optimal wind-hydro solution for Aegean Sea islands' electricity-demand fulfilment
US4206608A (en) Natural energy conversion, storage and electricity generation system
Rourke et al. Marine current energy devices: current status and possible future applications in Ireland
Fraenkel Marine current turbines: pioneering the development of marine kinetic energy converters
US20090066090A1 (en) Wind turbine based energy storage system and method using heavy weighted devices
US20050230980A1 (en) Wind turbine mounted on power transmission tower
US20100107627A1 (en) Buoyancy energy storage and energy generation system
US20030056506A1 (en) Wind turbine generator
US20090193808A1 (en) System and method for storing energy
US8492918B1 (en) Hybrid water pressure energy accumulating tower(s) connected to a wind turbine or power plants
CN102079366A (en) Movable offshore new energy power platform

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09743898

Country of ref document: EP

Kind code of ref document: A2

122 Ep: pct application non-entry in european phase

Ref document number: 09743898

Country of ref document: EP

Kind code of ref document: A2