CA2653704A1 - Vertical wind electricity generation system - Google Patents
Vertical wind electricity generation system Download PDFInfo
- Publication number
- CA2653704A1 CA2653704A1 CA2653704A CA2653704A CA2653704A1 CA 2653704 A1 CA2653704 A1 CA 2653704A1 CA 2653704 A CA2653704 A CA 2653704A CA 2653704 A CA2653704 A CA 2653704A CA 2653704 A1 CA2653704 A1 CA 2653704A1
- Authority
- CA
- Canada
- Prior art keywords
- wind
- blade
- panels
- blades
- panel
- 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.)
- Abandoned
Links
- 230000005611 electricity Effects 0.000 title claims abstract description 14
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 239000000725 suspension Substances 0.000 abstract description 3
- 230000001846 repelling effect Effects 0.000 description 7
- 229920005372 Plexiglas® Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- 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
- F03D—WIND MOTORS
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/062—Rotors characterised by their construction elements
- F03D3/066—Rotors characterised by their construction elements the wind engaging parts being movable relative to the rotor
- F03D3/067—Cyclic movements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/21—Rotors for wind turbines
- F05B2240/211—Rotors for wind turbines with vertical axis
- F05B2240/218—Rotors for wind turbines with vertical axis with horizontally hinged vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/31—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor of changeable form or shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/50—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/10—Geometry two-dimensional
- F05B2250/11—Geometry two-dimensional triangular
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/90—Braking
- F05B2260/901—Braking using aerodynamic forces, i.e. lift or drag
-
- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
A vertical wind electricity generating system, with two or four blades encompassing individual "wind movable" panels. Allowing for the generation of propulsion when the blades are facing in to the wind, as well as a reduction of drag resistance once the blades rotate with their back to the oncoming wind. The system will incorporate a ground mounted vertical generator, a tower with externally mounted bearings as well as a cable suspension system and an air brake system which will allow the electricity generating system to not only be light and inexpensive, but also wind efficient, with a lower minimum wind speed required to generate electricity, as well as the ability to operate in a wider range of wind speeds.
Description
Vertical Wind Electricity Generation System This invention deals with a vertical wind energy generation system using wind movable panels.
Summary of The Invention Two types of wind energy generation systems exist. The first being horizontal generators, the second being vertical generators. Horizontal systems (those with the generating motor placed horizontally) are more wind efficient, however with motors and blades mounted at the top of a steel tower that reaches as much as a hundred fifty meters above ground these systems besides being eye sores are extremely heavy. The weight not only makes these systems very expensive to produce and install, it also means that a high wind speed is required in order to turn their gigantic blades and generate electricity.
Vertical generators having the electric motor closer to ground level and much lighter blades are significantly less expensive to produce. However these vertical systems do not offer wind efficiency levels of the horizontal systems. The lack of sufficient ability of vertical systems to convert wind in to energy means that only high and constant wind speeds are needed to make these systems economically viable.
My idea for a vertical wind generating system will bring the best of both worlds together. It will be significantly more wind efficient then traditional vertical systems and it will be significantly lighter and therefore cheaper then traditional horizontal systems. The design with wind movable plastic panels will capture the winds energy with one side of the blade and let wind resistance flow through when the blade spins around with its back facing towards the path of the wind. A four blade system will take advantage of above mounted suspension cables which will support the weight of the blades and individual panels diminishing the need for an excessively heavy skeleton frame. The lower weight will mean cheaper production and installation cost as well as lower wind speed needed to turn the blades and produce electricity. The individual panels on each blade can potentially be made from clear Plexiglas or other types of plastic making the system less visible, solving another important issue one of obstructing views. This invention will also solve another dilemma in vertical wind production by providing a system that will allow for its blades to be slowed down if wind speed becomes too high.
Summary of The Invention Two types of wind energy generation systems exist. The first being horizontal generators, the second being vertical generators. Horizontal systems (those with the generating motor placed horizontally) are more wind efficient, however with motors and blades mounted at the top of a steel tower that reaches as much as a hundred fifty meters above ground these systems besides being eye sores are extremely heavy. The weight not only makes these systems very expensive to produce and install, it also means that a high wind speed is required in order to turn their gigantic blades and generate electricity.
Vertical generators having the electric motor closer to ground level and much lighter blades are significantly less expensive to produce. However these vertical systems do not offer wind efficiency levels of the horizontal systems. The lack of sufficient ability of vertical systems to convert wind in to energy means that only high and constant wind speeds are needed to make these systems economically viable.
My idea for a vertical wind generating system will bring the best of both worlds together. It will be significantly more wind efficient then traditional vertical systems and it will be significantly lighter and therefore cheaper then traditional horizontal systems. The design with wind movable plastic panels will capture the winds energy with one side of the blade and let wind resistance flow through when the blade spins around with its back facing towards the path of the wind. A four blade system will take advantage of above mounted suspension cables which will support the weight of the blades and individual panels diminishing the need for an excessively heavy skeleton frame. The lower weight will mean cheaper production and installation cost as well as lower wind speed needed to turn the blades and produce electricity. The individual panels on each blade can potentially be made from clear Plexiglas or other types of plastic making the system less visible, solving another important issue one of obstructing views. This invention will also solve another dilemma in vertical wind production by providing a system that will allow for its blades to be slowed down if wind speed becomes too high.
2 Detailed Description of The Invention The principal behind this idea are wind movable Plexiglas panels which will rest on a number of horizontally strung cables. As illustrated in Figure 2 A and B the panels (before the blade enters its propulsion cycle) are pushed by the approaching wind up against the cable supports that the individual panels are attached to using hinges at the top each panel, with their back pressed against the cable supports propulsion is produced. As illustrated in Figure 3 A and B once the blade rotates 180 degrees and has its back facing towards the wind the individual panels will be forced open 80 degrees by the wind allowing for virtually no wind resistance to slow the blade down.
Of course with the panels being lifted and dropped by the winds energy constantly as the system rotates could cause damage to the panels. This is why each panel as well as support cable that the panel comes in to contact with, will have thin strips of electromagnetic magnets attached to them as shown in Figure #11. The magnets will be positioned so that they repel each other if they get to close to each other. Therefore as shown in Figure #11 when each panel is blown closed by the wind just before the panel comes in to contact with the rear mounted support cable, the repelling magnet attached to the panel and the repelling electromagnetic attached to the support cable will lessen if not entirely eliminate impact between panel and cable. The same will happen when the panel is forced open by the wind and is stopped by the front mounted stopping cable. As shown in Figure #11 as the panel approaches the forward and above mounted stopping cable its repelling magnet will get close to the cables own repelling electromagnet decreasing if not entirely eliminating impact before if occurs. A mild electric current supplied from the tower to each blade can be wired to each electromagnet making for stronger repulsion and cushioning or the panels as rotation speed of the systems blades increases.
Figure 9 A through D demonstrates wind propulsion and wind drag reduction cycles using a four blade system. In Figure 9 A all individual panels on the blade are closed with their backs against rear mounted support cables creating wind propulsion. In Figure 9 B wind pushes open the blades nearest panels but closes and pushes against the far side panels producing more propulsion for the system. In Figure 9 C all of the blades panels are open decreasing wind drag on this blade considerably. Figure 9 D is similar to 9 B
in the sense that wind pushes the backs of the nearest panels opening them, but pushes against the front of the panels on the other side of the same triangular blade producing yet more propulsion.
Over all Figure 9 A through 9 D demonstrate how wind movable panels will produce wind propulsion when facing into the wind, as well as be allowed to open 80 degrees vertically when their backs are to the wind reducing drag significantly making this vertical wind energy system both light, inexpensive and also wind efficient.
The panels of each blade besides having support cables mounted behind them will also have a set of cables mounted in front of them allowing for the panel to be opened about 80 degrees before being stopped by the forward and above mounted support cable (Figure #11 B). This front mounted cable will act as a physical stop for the panels, preventing then from
Of course with the panels being lifted and dropped by the winds energy constantly as the system rotates could cause damage to the panels. This is why each panel as well as support cable that the panel comes in to contact with, will have thin strips of electromagnetic magnets attached to them as shown in Figure #11. The magnets will be positioned so that they repel each other if they get to close to each other. Therefore as shown in Figure #11 when each panel is blown closed by the wind just before the panel comes in to contact with the rear mounted support cable, the repelling magnet attached to the panel and the repelling electromagnetic attached to the support cable will lessen if not entirely eliminate impact between panel and cable. The same will happen when the panel is forced open by the wind and is stopped by the front mounted stopping cable. As shown in Figure #11 as the panel approaches the forward and above mounted stopping cable its repelling magnet will get close to the cables own repelling electromagnet decreasing if not entirely eliminating impact before if occurs. A mild electric current supplied from the tower to each blade can be wired to each electromagnet making for stronger repulsion and cushioning or the panels as rotation speed of the systems blades increases.
Figure 9 A through D demonstrates wind propulsion and wind drag reduction cycles using a four blade system. In Figure 9 A all individual panels on the blade are closed with their backs against rear mounted support cables creating wind propulsion. In Figure 9 B wind pushes open the blades nearest panels but closes and pushes against the far side panels producing more propulsion for the system. In Figure 9 C all of the blades panels are open decreasing wind drag on this blade considerably. Figure 9 D is similar to 9 B
in the sense that wind pushes the backs of the nearest panels opening them, but pushes against the front of the panels on the other side of the same triangular blade producing yet more propulsion.
Over all Figure 9 A through 9 D demonstrate how wind movable panels will produce wind propulsion when facing into the wind, as well as be allowed to open 80 degrees vertically when their backs are to the wind reducing drag significantly making this vertical wind energy system both light, inexpensive and also wind efficient.
The panels of each blade besides having support cables mounted behind them will also have a set of cables mounted in front of them allowing for the panel to be opened about 80 degrees before being stopped by the forward and above mounted support cable (Figure #11 B). This front mounted cable will act as a physical stop for the panels, preventing then from
3 climbing too high for the wind to be able to blow them back down when the systems blade rotates facing in to the wind for another propulsion cycle.
The cables that the individual panels are attached to will them selves will be attached to the blades solid triangular frame as illustrated in Figure 7. Each blade will be attached to the generator shaft near the top of the tower as illustrated in Figure 4, this involves a vertically placed steel plate welded to the outside of en externally mounted bearing.
This vertical plate will spin with each blade and provide for support of the blade itself by overhead cables which will be strung from one blade to the next across the top of the plate and also spin with each blade. The over head cable suspension system involving externally mounted bearings and cable supports will allow for a much lighter blade, reducing cost and the amount of wind energy required to propel the entire system. A horizontally mounted cable system as illustrated in Figure 8 will also be employed providing for increased stability during rotation.
Each blade will hang along side the generator tower and will be attached to the tower using an externally mounted bearing illustrated in Figure 6. The externally mounted bearings will further increase stability as well as providing for a way of implementing taller and wider blades.
An air brake system as illustrated in Figure 5 will also be implemented. This will consist of a hydrologically or mechanically operated lift system along the top and bottom of each blade. This system will consist of a horizontal Plexiglas panel mounted along the top and bottom of a blade attached with hinges at the top and bottom of each blades opening. These air brakes will be hydraulically powered. If the rotation speed of the system increases too much, in order to slow the blades down and prevent damage to the generator motor, these air brakes will be deployed and opened facing the direction of rotation caching wind and thus slowing the entire system down. Once the systems blades are slowed enough to facilitate safe operating rotation speed the air brakes will be closed. The angle of deployment of this breaking system will be determined by an on board control computer based of generator speed and temperature. Another usefulness of the air bake system is that when not deployed the horizontally mounted panels will increase the drag coefficient of each triangular shaped blade. The electricity for this system will be provided from the tower using an electrically charged rail running the circumference of the tower, having an electric cable on the blade side sliding along this rail. As shown in Figure #11 repelling magnets will be used to absorb panel impact. However the same approach can be used with electrically charged attracting electromagnets in order to lock the blades panels in the open position in order to let wind pass through even in the propulsion cycle providing another method of slowing the system down. This will work by eliminating electric current to the repelling magnets (eliminating their repelling energy) and increasing current to the attracting electromagnets, locking the panel in the open position preventing wind from blowing the panels down and creating propulsion if the systems blades rotate too fast.
The cables that the individual panels are attached to will them selves will be attached to the blades solid triangular frame as illustrated in Figure 7. Each blade will be attached to the generator shaft near the top of the tower as illustrated in Figure 4, this involves a vertically placed steel plate welded to the outside of en externally mounted bearing.
This vertical plate will spin with each blade and provide for support of the blade itself by overhead cables which will be strung from one blade to the next across the top of the plate and also spin with each blade. The over head cable suspension system involving externally mounted bearings and cable supports will allow for a much lighter blade, reducing cost and the amount of wind energy required to propel the entire system. A horizontally mounted cable system as illustrated in Figure 8 will also be employed providing for increased stability during rotation.
Each blade will hang along side the generator tower and will be attached to the tower using an externally mounted bearing illustrated in Figure 6. The externally mounted bearings will further increase stability as well as providing for a way of implementing taller and wider blades.
An air brake system as illustrated in Figure 5 will also be implemented. This will consist of a hydrologically or mechanically operated lift system along the top and bottom of each blade. This system will consist of a horizontal Plexiglas panel mounted along the top and bottom of a blade attached with hinges at the top and bottom of each blades opening. These air brakes will be hydraulically powered. If the rotation speed of the system increases too much, in order to slow the blades down and prevent damage to the generator motor, these air brakes will be deployed and opened facing the direction of rotation caching wind and thus slowing the entire system down. Once the systems blades are slowed enough to facilitate safe operating rotation speed the air brakes will be closed. The angle of deployment of this breaking system will be determined by an on board control computer based of generator speed and temperature. Another usefulness of the air bake system is that when not deployed the horizontally mounted panels will increase the drag coefficient of each triangular shaped blade. The electricity for this system will be provided from the tower using an electrically charged rail running the circumference of the tower, having an electric cable on the blade side sliding along this rail. As shown in Figure #11 repelling magnets will be used to absorb panel impact. However the same approach can be used with electrically charged attracting electromagnets in order to lock the blades panels in the open position in order to let wind pass through even in the propulsion cycle providing another method of slowing the system down. This will work by eliminating electric current to the repelling magnets (eliminating their repelling energy) and increasing current to the attracting electromagnets, locking the panel in the open position preventing wind from blowing the panels down and creating propulsion if the systems blades rotate too fast.
4 Figure 10 illustrates how each blades panels will be attached at a slight horizontal slant towards the center of the systems triangular shaped blades. The purpose of this horizontal slant towards center will be to allow the wind to close one side of the blades panels creating propulsion while the panels on the opposite side of the same blade, closest to the direction of the wind will still be open.
Claims (6)
1. A multiple triangular shaped blade system for generating electricity from wind. Each triangular shaped blade consists of a set of wind movable panels. These panels will be:
.cndot. suspended by hinges at the top of each panel .cndot. mounted at a slight horizontal tilt toward the center of each blade .cndot. closed by the wind up against rear mounted support cables when each blades open side is facing into the wind, generating propulsion .cndot. opened by the wind to 80 degrees vertically when the blades back rotates and heads against the wind, decreasing wind resistance considerably
.cndot. suspended by hinges at the top of each panel .cndot. mounted at a slight horizontal tilt toward the center of each blade .cndot. closed by the wind up against rear mounted support cables when each blades open side is facing into the wind, generating propulsion .cndot. opened by the wind to 80 degrees vertically when the blades back rotates and heads against the wind, decreasing wind resistance considerably
2. The vertical electricity wind generator recited in claim 1, consisting of an externally mounted bearing system welded to the generator tower and supported by bearing mounts.
3. The vertical electricity wind generator recited in claim 1, consisting of a vertically mounted set of plates attached to an externally mounted bearing, which will provide for each blade to be connected to the internally placed generator input shaft, while at the same time allowing for overhead support cables to be mounted across the top of the vertically mounted plates.
4. The vertical electricity wind generator recited in claim 1 consisting of a set of upper and lower mounted hydraulically powered air brakes on each blade, controlled by an on board computer based of generator temperature and rotation speed.
5. The vertical electricity wind generator recited in claim 1 consisting of a set of electromagnets attached to each panel and support cable which when powered with electric current will eliminate panel to cable impact.
6. The vertical electricity wind generator recited in claim 1 consisting of a set of electromagnets attached to each panel and support cable which when powered with electric current will force the panels to stay open during any wind cycle slowing the entire system down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2653704A CA2653704A1 (en) | 2009-02-05 | 2009-02-05 | Vertical wind electricity generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2653704A CA2653704A1 (en) | 2009-02-05 | 2009-02-05 | Vertical wind electricity generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2653704A1 true CA2653704A1 (en) | 2010-08-05 |
Family
ID=42538206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2653704A Abandoned CA2653704A1 (en) | 2009-02-05 | 2009-02-05 | Vertical wind electricity generation system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2653704A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITFI20120121A1 (en) * | 2012-06-15 | 2013-12-16 | En Eco S P A | WIND TURBINE WITH VARIABLE GEOMETRY BLADES |
| WO2022115096A1 (en) * | 2020-11-26 | 2022-06-02 | Николай Иосифович ЖИГАН | Wind energy installation |
-
2009
- 2009-02-05 CA CA2653704A patent/CA2653704A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITFI20120121A1 (en) * | 2012-06-15 | 2013-12-16 | En Eco S P A | WIND TURBINE WITH VARIABLE GEOMETRY BLADES |
| WO2022115096A1 (en) * | 2020-11-26 | 2022-06-02 | Николай Иосифович ЖИГАН | Wind energy installation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |