Power system

FIELD: power engineering.

SUBSTANCE: power system comprises a wind power or a hydraulic power turbine 1, connected with a generator 2. The generator 2 has at least two windings 3 of the stator. Each winding 3 of the stator is connected accordingly to one rectifying element 4. Each winding 3 of the stator is connected to the side of AC voltage of the connected rectifying element 4. Each rectifying element 4 is connected accordingly to one circuit 5 of energy accumulation. Each rectifying element 4 at the side of DC voltage is connected in parallel with the connected circuit 5 of energy accumulation. Circuits 5 of energy accumulation are connected to each other in sequence.

EFFECT: simplified design and higher reliability of a power system.

24 cl, 4 dwg

 

The invention relates to the field of renewable energies. It is based on the power system in accordance with the restrictive part of the independent claim.

Wind energy systems, which due to diminishing energy resources are being increasingly used as an alternative energy suppliers, constructed mainly on the coast or at sea coasts. Tidal energy systems also are typically installed on the seabed, and the amplitude of the tide, or for sea water is used as the primary energy source.

Wind power system in accordance with the original version presented in a "Power Quality Measurements Performed on a Large Wind Park at Low and Medium Voltage Level", E.Ghiani et al., International Conference on Power System Transients, 4 - 7. Juni 2007. They wind energy system has a wind turbine that is connected to the generator, and the generator usually includes at least two windings of the stator. The stator winding is connected to the transformer, designed to create a high AC voltage, making this energy with low losses and effectively can then be transported further.

However, it is in wind power systems installed in the coastal marine area, or tidal power systems, usually installed below the level of the water surface, the presence of the transformer, in particular, oil transformer, it is undesirable due to the nature of the installation, as well as reasons of maintenance. Besides greatly increasing the frequency of failure and exposure to power system disturbances, and also decreases the degree of readiness of the equipment if the transformer is serviced properly and not regularly.

Object of the invention is therefore the creation of a power system having a simple construction, which is reliable in operation and does not require a transformer. This problem is solved by the characteristics of paragraph 1 of the claims. In dependent claims presents preferred embodiments of the invention.

The power system in accordance with the invention includes a wind turbine or water power turbine coupled to a generator, and the generator has at least two windings of the stator. In accordance with the invention, each stator winding is connected respectively to one rectifier element, and each stator winding is connected with the side of the AC voltage is connected to the rectifier element. The number of rectifying elements corresponds, thus, the number of windings of the stator. Next, each rectifier element connected line is the result for the one-loop energy storage, and each rectifier element on the side of the constant voltage connected in parallel with circuit connected energy storage. Number of circuits of accumulation of energy corresponds, thus, the number of rectifying elements. Next, the contours of the energy storage are connected to each other. At least two rectifying element create on the corresponding side DC voltage, that is connected to the circuit energy storage, DC voltage, and through a serial connection circuits of the energy storage constant voltage are summed, so that preferably is revealed high overall constant voltage circuits for energy storage. Transformer to generate a high AC voltage is therefore unnecessary, and can with advantage be neglected. Using a transmission medium voltage - constant current" or "transmission of high voltage direct current" (can, for example, with low losses and effectively transport the electricity on. As the power system in accordance with the invention does not have a transformer, eliminating the need for costly installation and maintenance, resulting in systems is a is generally easier and more reliable and has a high degree of readiness.

In accordance with one embodiment of the invention the circuit of the energy storage has a capacitive energoakkumulyator. Moreover, the circuit energy storage can have a first capacitive energoakkumulyator and sequentially connected to the first capacitive energoakkumulyatory second capacitive energoakkumulyator.

Each stator winding has a first connection and second connection, and that the first battery is connected with the side of the AC voltage is connected to the rectifier element, and a second point of connection by the connection point of the first capacitive energoakkumulyator is connected to the second capacitive energoakkumulyatorami.

Each stator winding is formed by three parts of the winding and each part of the winding is connected with the side of alternating voltage connected to the corresponding stator winding to the rectifier element.

To each circuit of the energy storage means connected in parallel to a short circuit.

In each connection of the stator winding with a rectifier element to the stator winding included separation means, which is intended for galvanic separation of the stator winding.

Each rectifier element can be designed as an active rectifier element control is implemented by a semiconductor power switches or as a passive rectifier element with passive not controlled semiconductor power switches.

A capacitor connected in series between the stator winding and the passive rectifier element.

Each rectifier element is designed as a power rectifier for switching multiple levels of switching voltages.

This and other objectives, advantages and characteristics proposed for the consideration of the invention become apparent on the basis of the subsequent detailed description of preferred embodiments of the invention in conjunction with the drawings.

Shown:

1 the first version of the exercise of the power system in accordance with the invention, 2 is the second version of the exercise of the power system in accordance with the invention,

3 the third option is the implementation of a power system in accordance with the invention,

figure 4 the fourth option is the implementation of a power system in accordance with the invention.

Used in the drawings, the positions and their labels collated on the sheet designations. In principle, in the drawings, the same components are provided with identical designations. Described embodiments of presents as an example of the subject invention and are not limited actions.

Figure 1 shows the first variant implementation of the power system in accordance with the invention. The power system includes a wind turbine 1, for example the u, in the case of a wind energy system, or hydropower turbine 1, for example, in the case of tidal power system which is connected to the generator 2 and generator 2 has at least two windings 3 of the stator. Any type of generator, for example, a synchronous machine, induction machine, permanent magnet, synchronous reactive machine, etc. In accordance with the invention as a whole to each winding 3 of the stator respectively connected to the rectifier element 4, and each winding 3 of the stator are connected with the side of the AC voltage is connected to the rectifier element 4. The number of rectifying elements 4 corresponds, thus, the number of windings 3 of the stator. Next, each rectifier element 4 is connected, respectively, with a contour 5 energy storage, and each rectifier element 4 on the side of the constant voltage connected in parallel with the connected circuit 5 energy storage. Number of circuits 5 energy storage corresponds, thus, the number of rectifying elements 4. Next, the contours of the 5 energy storage are connected to each other. Presented in figure 1 variant embodiment of the invention has, for example, five of the windings 3 of the stator and, therefore, also five rectifying elements 4 and, consequently, five is Antonov 5 energy storage. In General, at least two rectifying element 4 create on the corresponding side DC voltage, i.e. the corresponding circuit 5 energy storage, DC voltage, and through a serial connection circuits 5 energy storage constant voltage are summed, so that in the preferred embodiment, is high overall constant voltage circuits 5 energy storage. Transformer to generate a high AC voltage due to this becomes excessive, and it is the preferred way to save money. Moreover, reduced the number and cross-section necessary cables, which must be laid to the place of connection of the power system. Using a transmission medium voltage - constant current" or "transmission of high voltage direct current" (can, for example, with low losses and effectively transmit this electricity on, in particular, in the presence of a wind energy system or in the presence of a tidal power system, for example, on the mainland. As the power system in accordance with the invention has no transformer, it also eliminates costly installation and maintenance, resulting in the power system as a whole becomes easier and more reliable, and great for the is a high degree of readiness. The rectifier elements 4 are implemented respectively as two half-bridge circuit, that is, as a full bridge circuit. According to the first variant implementation of the power system in accordance with the invention according to figure 1, but in accordance with the second, third, and fourth options implementation according to figure 2 or figure 3 or figure 4, where we will further discuss in more detail, in General, each rectifier element 4 is designed as an active rectifier element 4 with controlled semiconductor power switches, that is, the full bridge circuit includes a controllable power semiconductor switches. The advantage of the active rectifier element 4 is in a better control of the generator 2 when the load changes, for example, in the wind or when changes in flow. Further, it is possible to operate the generator 4 through the motor in order to position the crossbar of the rotor relative to the position of propeller blades. Alternatively, and to further simplify, primarily to reduce management costs, it is also possible that, in General, each rectifier element 4 was designed as a passive rectifier element 4 with passive not controlled semiconductor power switches of the device, i.e. the full bridge circuit including the and would only passive, not controllable power semiconductor switches, such as power diodes. If the rectifier element 4 is designed as a passive rectifier element 4, and the generator, for example, as a mechanism of permanent magnet, preferably between winding 3 of the stator and passive rectifier element 4 connected in series to the capacitor 8, thus achieving high power factor. In the fourth embodiment of the invention according to figure 4 shows the connection of such a condenser 8. It is also possible that each rectifier element 4, in General, was executed as the power rectifier of alternating current for switching multiple levels of switching voltages.

According to the figure 1 circuit 5 energy storage has a capacitive energoakkumulyator, and can therefore be implemented very simple circuit 5 energy storage. As an alternative, according to the second variant implementation of the power system in accordance with the invention according to figure 2, and also according to the third variant of implementation of the power system in accordance with the invention according to figure 3, it is also possible that the circuit 5 energy storage has a first capacitive energoakkumulyator and sequentially connected to the first capacitive energoeco is ulatory second capacitive energoakkumulyator, whereby with the advantage can be obtained a higher DC voltage to each circuit 5 energy storage.

According to figure 2, each winding 3 of the stator has a first battery and a second battery In, and the first point of connection And connected with the side of alternating voltage connected to the rectifier element 4 and the second point of connection In connected with the junction point between the first capacitive energoakkumulyator with the second capacitive energoakkumulyatorami. In a preferred embodiment, the respective rectifier element 4 according to figure 2 may be implemented as a single half-bridge circuit, so you can save on power semiconductor switch of the device in relation to the respective rectifier element 4, which is implemented as a full bridge circuit. In General, therefore, the power system becomes even easier.

According to figure 3, each winding 3 of the stator is formed by three parts 3A, 3b, 3C winding, and each part 3A, 3b, 3C winding connected with the side of alternating voltage connected to the corresponding winding 3 of the stator to the rectifier element 4. In the preferred embodiment, three parts 3A, 3b, 3C winding connected in circuit star connection as shown in figure 3.

If damage is, for example, the rectifying element 4, in accordance with figure 1, figure 2, figure 3 and figure 4 for each circuit 5 energy storage means connected in parallel 6 short circuit, which allows a short circuit of the corresponding circuit 5 energy storage. Further operation of the power system in the preferred embodiment are possible, and the total DC voltage to all circuits 5 energy storage then, of course, reduced. Lowering the overall DC voltage in case of damage can be prevented by the proper performance of the power system, so that it is in the short circuit path 5 energy storage through the remaining rectifier elements 4 can be received total nominal DC voltage. Moreover, according to figure 1, figure 2, figure 3 and figure 4 in each connection to the winding 3 of the stator is connected separation means 7, and separation means 7 is designed for galvanic separation of the winding 3 of the stator. In case of damage, for example, on the winding 3 of the stator, the winding in the preferred embodiment, can be separated. Further, through the short circuit path 5 energy storage using the appropriate tools 6 short circuit and through simultaneous CTD the population of the corresponding winding 3 of the stator with the separation means 7, the corresponding rectifying element 4 can be isolated, for example, with the purpose of maintenance or inspection and/or for its replacement.

1. The power system including wind turbine (1) or hydropower turbine (1)which is connected to the generator (2)and the generator (2) has at least two windings (3) of the stator and each winding (3) of the stator are attached, respectively, to one rectifier element (4), and each winding (3) of the stator are connected with the side of the AC voltage is connected to the rectifier element (4), characterized in that each rectifier element (4) attached, respectively, to the same circuit 5 energy storage and each rectifier element (4) on the side of the constant voltage connected in parallel with the connected circuit 5 energy storage, and that the contours of the 5 energy storage are connected to each other.

2. The power supply system according to claim 1, characterized in that the circuit 5 energy storage has a capacitive energoakkumulyator.

3. The power supply system according to claim 1, characterized in that the circuit 5 energy storage has a first capacitive energoakkumulyator and sequentially connected to the first capacitive energoakkumulyatory second capacitive energoakkumulyator.

4. The power supply system according to claim 3, great the rpm die, each winding (3) of the stator has first place (A) connection and the second place (In) connection and the first location (A) connection is connected with the side of the AC voltage is connected to the rectifier element (4)and second (B) connected via a connection point of the first capacitive energoakkumulyator is connected to the second capacitive energoakkumulyatorami.

5. The power supply system according to any one of claims 1 to 3, characterized in that each winding (3) of the stator is formed by three parts (3A, 3b, 3C) of the winding, and that each part (3A, 3b, 3C) winding connected with the side of alternating voltage connected to the corresponding winding (3) of the stator to the rectifier element (4).

6. The power supply system according to any one of claims 1 to 4, characterized in that each circuit (5) energy storage means connected in parallel (6) short circuit.

7. The power supply system according to claim 5, characterized in that each circuit (5) energy storage means connected in parallel (6) short circuit.

8. The power supply system according to any one of claims 1 to 4, 7, characterized in that each connection of the winding (3) of the stator with a rectifier element (4) to the winding (3) of the stator included separation means (7), and separation means (7) is used for the galvanic separation of the winding (3) of the stator.

9. The grid at p., characterized in that each connection of the winding (3) of the stator with a rectifier element (4) to the winding (3) of the stator included separation means (7), and separation means (7) is used for the galvanic separation of the winding (3) of the stator.

10. The power supply system according to claim 6, characterized in that each connection of the winding (3) of the stator with a rectifier element (4) to the winding (3) of the stator included separation means (7), and separation means (7) is used for the galvanic separation of the winding (3) of the stator.

11. The power supply system according to any one of claims 1 to 4, 7, 9, 10, characterized in that each rectifier element (4) is designed as an active rectifier element with a controlled semiconductor power switches.

12. The power supply system according to claim 5, characterized in that each rectifier element (4) is designed as an active rectifier element with a controlled semiconductor power switches.

13. The power supply system according to claim 6, characterized in that each rectifier element (4) is designed as an active rectifier element with a controlled semiconductor power switches.

14. The power system of claim 8, wherein each rectifier element (4) is designed as an active rectifier element with a controlled semiconductor power switches.

15. Energise the subject according to any one of claims 1 to 4, 7, 9, 10, characterized in that each rectifier element (4) is designed as a passive rectifier element with passive not controlled semiconductor power switches.

16. The power supply system according to claim 5, characterized in that each rectifier element (4) is designed as a passive rectifier element with passive not controlled semiconductor power switches.

17. The power supply system according to claim 6, characterized in that each rectifier element (4) is designed as a passive rectifier element with passive not controlled semiconductor power switches.

18. The power system of claim 8, wherein each rectifier element (4) is designed as a passive rectifier element with passive not controlled semiconductor power switches.

19. The power grid to 15, characterized in that the condenser (8) connected in series between the winding (3) of the stator and passive rectifier element (4).

20. The power supply system according to any one of p-18, characterized in that the condenser (8) connected in series between the winding (3) of the stator and passive rectifier element (4).

21. The power supply system according to claim 11, characterized in that each rectifier element (4) is designed as the power rectifier for switching a switched voltage is response.

22. The power supply system according to any one of p-14, 16-19, characterized in that each rectifier element (4) is designed as the power rectifier for switching multiple levels of switching voltages.

23. The power supply system according to item 15, wherein each rectifier element (4) is designed as the power rectifier for switching multiple levels of switching voltages.

24. The power supply system according to claim 20, characterized in that each rectifier element (4) is designed as the power rectifier for switching multiple levels of switching voltages.



 

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14 cl, 17 dwg

FIELD: electricity.

SUBSTANCE: mobile self-contained power supply system includes wind generator, converter of solar energy to electrical energy, storage batteries the outputs of which are connected through voltage inverter and distributing device to load, and control assembly, radio channel assembly with communication antenna, which is connected to control station, central control room and wheel landing gear equipped with fasteners for air transportation. Storage batteries include at least three compartments; wind generator and converter of solar energy to electrical energy are connected to compartments of storage batteries through storage battery charging unit the control input of which is connected to output of control assembly; system housing is made in the form of a small car installed on wheel landing gear; when in transport condition of the system, wind generator is located inside the above small car.

EFFECT: enlarging operating capabilities.

10 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: unit comprises a vertical tower 1 with a jet-directing blade device 2 arranged in a side wall to form a swirled vortex-like motion of a moving medium flow inside the tower 1 as running over the tower 1. At the side of one of the tower 1 ends into the axial area of the latter to reinforce rotation there is an output section 3 of a channel 4 introduced in direction of the motion of the medium rotating inside the tower. In the channel 4 there is an orthogonal multilevel turbine. The channel 4 at the section from the inlet to the turbine is arranged as narrowing. Each level of the turbine is arranged with arrow-shaped blades, bent along helical lines and symmetrically inclined from the area of coupling of adjacent level blades in the form of an arrowhead in the direction opposite to the blades of the adjacent turbine level. Ends of blades of the adjacent turbine levels are fixed on a ring arranged between adjacent levels of the turbine. The section 3 of the channel 4 is arranged with the axis parallel to direction of the vortex motion inside the tower 1.

EFFECT: higher efficiency of a power generating unit due to increased coefficient of using kinetic energy of air or water approach flow.

7 cl, 7 dwg

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