Wind-driven power plant with heated diffuser accelerator

FIELD: power engineering.

SUBSTANCE: wind-driven power plant comprises a diffuser accelerator and a wind wheel installed inside it. The wind wheel is connected to a power generator. A power converter-distributor is connected to the power generator. An inverter, a solar and an accumulating batteries are connected electrically with the converter-distributor. Additionally a thermoelectric heater is connected to the power converter-distributor. The heater is installed on the diffuser accelerator.

EFFECT: increased efficiency of operation of a wind-driven power plant and expansion of temperature and moisture ranges of its operation.

7 cl, 3 dwg

 

The invention relates to the field of wind energy, namely wind power plants offline power supply with diffuser accelerator air flow, increasing the efficiency and safety of the installation.

Known wind power installation with an accelerator, propeller, associated generators and solar panel above the accelerator (see patent RU No. 2349792, CL F03D 1/04, publ. 20.03.2009). The accelerator is made in the form of a Venturi, which makes it extremely inefficient in the free stream. Wind turbine placed in an undesirable location, and their number and the number of generators, as well as placement in a separate building solar panels makes installation cumbersome and expensive. In addition, the installation does not resolve the issues of power supply in the absence of the sun and wind.

Some of these issues have been resolved in the system for Autonomous power supply (see patent RU No. 2382900, CL F03D 9/02, publ. 27.02.2010), where it is associated with the wind turbine to the generator through a transforming and regulating equipment connected to the battery and the inverter. But the system for Autonomous power of consumers will not be able to supply electricity in the event of prolonged calm and discharge of the battery. In the case of full charge, when there are wet the while and the lack of power consumers in the system not available reset, or disposal of surplus power, or protection of the propeller.

Excess electricity is partially solved in the known wind turbines wind turbine 2000 (http://www.clean-wind.ru/production/wpu/index.html), in which the power supply is connected a tubular heater (heater). This use of PETN can be useful only in the cold season or in the Far North. In addition, the turbine uses high-speed two-bladed wind wheel, which is not comfortable and is not safe for Autonomous consumers, which is often located near the windmill.

Closest to the present invention is a wind power station "Hummingbird" (Passport substation No. 1/7-op and manual wind energy station "Hummingbird", Moscow, OOO NPP "VEP", 2009.). The station contains a diffuser accelerator placed inside the wind-wheel and connected with it the generator. The generator is connected: the transducer-distributor of electricity with chargers, inverter, solar and rechargeable batteries. Diffuser accelerator and slow wind wheel effectively and safely operate the plant near the housing. Surplus electricity is discharged on a ballast electrical load chargers wind turbine. This load is not useful and, in addition, it slows the pace of the temperature conditions of the charger, which ultimately reduces the overall reliability and service life. To accommodate a battery charger, inverter and batteries require a separate room with maintaining the appropriate microclimate. Between the specified location, an electric generator and solar panel required electrocommunication. All this considerably increases the cost of the station reduces its efficiency, reduces climatic conditions, in particular issues of the plant operation at low temperatures and possible icing of its elements.

The invention aims to remedy these disadvantages. The technical result consists in increasing the efficiency of wind power plants, as well as in the expansion temperature and humidity ranges of its operation. The problem is solved and the technical result is achieved by the fact that the wind power plant comprises a diffuser accelerator placed inside wheel connected to a generator that is connected to the transducer-distributor of electricity and electrically connected with the last inverter, solar and rechargeable battery, and the transmitter-distributor of electricity additionally connected thermoelectric heater placed on the diffuser UIC is retele. The solar cells are preferably placed on the outer upper surface of the diffuser accelerator. To the transmitter-distributor of electricity can be connected weather station includes an anemometer and humidity sensors and temperature. To the transmitter-distributor of electricity can also be connected to the speed sensor propeller, propeller blades at the same time carry out rotary and feed drive is also connected to the transducer-distributor of electricity. Thermoelectric heater preferably made sectional. Diffuser accelerator is advisable to make hollow, and place in the cavity of the transducer-distributor of electric power, inverter, battery, and some sections of thermoelectric heater. The cavity of the accelerator may be equipped with an additional temperature sensor connected to the transmitter-distributor, and on the surface of the accelerator can be performed by mounting the hatches.

Figure 1 shows the schematic diagram of the installation;

figure 2 - node I in figure 1;

figure 3 is a cross section of the diffuser accelerator.

The proposed wind power plant comprises a diffuser accelerator 1 made in the form of an annular shaped wing with a slit closed lcom. Inside the accelerator 1 posted by wind wheel 2, which can be executed as fast mallapaty and low-noise, low-speed, multi-blade. Wind wheel 2 is connected to a generator 3. This connection can be made rigid when the generator rotor mounted on the hub of the propeller, or kinematic, when between the wind turbine and generator posted by a multiplier (not shown). The generator 3 is connected to the transducer-distributor of electricity 4, which is a controller to control operation of the energy conversion and distribution. With the transducer-distributor 4 are electrically connected to the inverter 5, 6 solar and battery 7 battery. The installation further comprises a thermoelectric sectional heater 8, is connected to the transmitter-distributor 4 and placed on the cone accelerator 1.

Solar battery 6 can be installed free-standing, as shown in figure 1, or with the aim of decreasing the material can be placed on the outer upper surface B of the diffuser accelerator 1, as shown in figure 3.

The proposed installation can be performed fully adjustable, i.e. at any time produced energy can be equated with consumption. At the same time its the heater 8 is going to be used only to maintain the desired temperature materials and equipment installation, exception icing. For this installation further comprises connected to the transducer-distributor 4 weather station 9 with the anemometer and temperature sensors and humidity, as well as the sensor 10 speed propeller. In this case, the blades 11 of the wind turbine are pivoted and provided with drive 12, is connected to the transmitter-distributor 4.

Section 13 of the heater 8 may be made in the form of a separate tubular electric heaters (heating Elements), conductive tires or wires embedded in the surface of the accelerator 1. Section 13 can also be mounted on the Central fairing 14 and the blades 15 of the guide vane. The presence of fairing 14 and blade 15 is not mandatory in all cases, because the wind wheel 2 generator 3 can be mounted on a cylindrical shell forming a Central ejecting channel (not shown).

To increase the compactness of installation, ease of electrical communications and reduce the cost of diffuser accelerator 1 is made hollow. The transducer-distributor 4, the inverter 5 and the battery 7 when this is placed in the lower part of the cavity of the accelerator 1 (see figure 3), which increases the stability in the air stream. The orientation of the accelerator to the wind can be done is either hard to install on the "rose of the winds", any actuator similar to actuator 12 through a gear similar to the gear 16.

For use in low temperatures cavity accelerator provide additional temperature sensor 17 connected to the transducer-distributor 4, and part of sections 13 of the heater is fitted in the cavity of the accelerator 1. For installation and maintenance of the equipment on the surface of the accelerator 1 perform the installation passage 18.

The proposed wind power plant operates as follows.

The algorithm depends on the selected and implemented regulation.

In the most common variant from the initial wind speed up the settlement (nominal) blades 11 of the wind turbine 2 is installed at an angle corresponding to the maximum utilization of wind energy (power factor), wind flow is amplified diffuser accelerator 1 and the effect on the wind wheel. The rate of flow of the wind wheel 2 increases in proportion to the ratio of the larger diameter of the accelerator 1 to its lower internal diameter. The power of the wind turbine, respectively, is proportional to the rate of flow in the third degree. The energy of the wind turbine 2, operating at the maximum power coefficient is transferred to the generator 3. Until settlement nominalinterest wind is the growth of the power of the generator. With further increase in wind speed power of wind turbine and generator are maintained constant. This is ensured by the rotation of the blades 11 of the wind turbine 2, as shown in figure 2, through the reduction gear 16 of the actuator 12 by the signal Converter valve 4. As a result, the power factor decreases proportional to the cube of the wind speed, while maintaining a constant power output of the wind turbine.

Produced by the generator 3 electricity supplied to the transducer-distributor 4, which is converted into electricity DC fixed voltage. The received energy is used to charge the battery 7, the power supply of the inverter 5 and the external customer DC. The inverter 5 produces for external consumer stable electricity AC sine wave. In the calm charging the battery 7 is supplied from the solar battery 6. The recharging of the battery 7 is excluded Converter-valve 4 controlling through the voltmeter EMF of the battery 7. If the battery 7 is charged fully, the power consumer via the inverter 5 and the transducer-distributor 4 from the generator 3 or the solar battery 6.

If the external consumers of electricity are missing or their power is small compared to genericwellbutrinsrto 3 and (or) solar battery 6, the excess energy go on thermoelectric heater 8. Perform heater sections 13 allows you to place them in such a way as to optimize the boundary layer, and to ensure steady airflow around the accelerator 1. In the case of a threat of icing, as reported to the temperature sensors and humidity the weather station 9, the transducer-distributor supplies the heater 8 regardless of the battery 7 and the consumed capacity.

Thus, the proposed setup allows to implement its activities in full compliance with the required power, i.e. to produce as much energy as it requires the consumer. At the Converter inlet valve 4 receives signals of the primary sensors, such as an anemometer weather station 9 and the speed sensor 10, as well as information about the EMF of the battery 7, the output current of the inverter 5 (alternating current in the load circuit), a constant load current and the electromotive force of the solar battery 6. The transducer-distributor 4 generates control pulses for their feeder devices. The latter include the actuator 12, which through a reduction gear 16 sets of blades 11 at an angle at which the total power of the generator 3 and the solar battery 6 is equal power to all consumers (including battery 7). The excess energy that you SBRAS is to no, and the heater 8 is used only for generation of the required boundary layer, and exceptions icing.

In the cavity of the accelerator enough space to accommodate the battery, inverter, Converter, distributor and electrical communication (see figure 3). If the installation is operated in cold weather, normal temperature conditions listed equipment are provided with a temperature sensor 17 and section 13 of the heater. Installation passage 18 can be used to create ventilation gaps when operating in hot climates.

Thus, the proposed wind power installation allows you to extend the region of its use from Equatorial latitudes to the far North, to exclude the possibility of icing installation, to reduce the cost of electric communication and installation of equipment, as well as by controlling the boundary layer, and exceptions-stall regimes significantly improve its energy efficiency.

1. Wind power installation comprising a diffuser accelerator placed inside wheel connected to a generator that is connected to the transducer-distributor of electricity and electrically connected with the last inverter, solar battery, otlichayas the same time, that the transducer-distributor of electricity additionally connected thermoelectric heater placed on the cone accelerator.

2. Installation according to claim 1, characterized in that the solar cells placed on the upper surface of the diffuser accelerator.

3. Installation according to claim 1, characterized in that the transducer-distributor of electricity connected weather station includes an anemometer and humidity sensors and temperature.

4. Installation according to claim 1, characterized in that the transducer-distributor of electricity connected to the speed sensor propeller and propeller blades are pivoted and provided with a drive connected to the transmitter-distributor of electricity.

5. Installation according to claim 1, characterized in that thermoelectric heater made sectional.

6. Installation according to claim 5, characterized in that the diffuser accelerator is made hollow and its cavity posted by the transducer-distributor of electric power, inverter, battery and some sections of thermoelectric heater.

7. Installation according to claim 6, characterized in that the cavity of the accelerator equipped with an additional temperature sensor connected to the transmitter-distributor, and on the surface of the accelerator is made m ntinue hatches.



 

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