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INVENTION
Russian Federation Patent RU2015412
Windmills
Name of the inventor: Kolesnikov NK .; Klimov MK .; Epremyan AV
The name of the patentee: Nikolai Kuzmich Kolesnikov; Klimov Mikhail Kuzmich; Epremyan Arthur V.
Address for correspondence:
Starting date of the patent: 1991.04.08
Use: in the wind industry. The inventive wind power plant includes mechanically connected to the rotor of the generator 2 speed sensor 3, an electrical input coupled to the functional converter 4, the adder 8 is connected to its input to an output of the functional converter 4, a power sensor 11 coupled to the second input of the adder 8 and the load 13, the integrator 7 is connected to the output of the adder 8, the zero-body 6, the direct converter control unit frequency 12 whose inputs are connected to the output of the integrator 7, the controlled rectifier 5, the block automatic gas supply 15, an electrochemical generator 16, an inverter 17, synchronization unit 18 and a direct frequency converter (DFC) 14. One input NHR 14 associated with block direct frequency converter 12, the second power input - with a power output of the generator 2 AC and the output is connected to a load 13. The clock input unit 18 connected to the output NHR inverter 14. One input 17 is connected to the synchronization unit 18 is connected to the other electrochemical generator 16, and its power output is connected to the load 13.
DESCRIPTION OF THE INVENTION
The invention relates to electrical engineering and can be used in wind power plants, continuously providing AC electrical power consumers with variable power and variable load wind flow. The solution to this problem is possible in co-operation of the wind power installation and the electrical energy storage device. Since the consumption of electrical energy during the day is not constant, then decreasing the load under favorable conditions (high wind speed), excess energy can be accumulated by the electrolysis of water into hydrogen and oxygen, which are then used to generate electricity using fuel cells. Moreover, the excess hydrogen produced can be used as an energy source for a variety of purposes.
Known wind turbines containing various types of electrical energy storage [1,2,3]. The main drawback of such systems - low efficiency units with a variable wind flow and varying load capacities.
The closest to the proposed installation is an apparatus for a DC power load [3]. Low efficiency of the prototype due to the inability to select the optimum mode according to the criterion of generated power generator and changing consumer load. The reason for this is the absence in the prototype system, providing a comparison of the power generated by the generator at a given wind flow and power consumer at a time.
The purpose of the present invention - increase the efficiency of the wind power plant at variable wind speed and variable load value.
The goal is achieved by the fact that in the known device comprising a wind turbine, comprising a wind turbine and alternator, controlled rectifier coupled to an electric generator output, the cell that receives power from the controlled rectifier and providing the electrolysis of water into hydrogen and oxygen gas gas tanks, which used for storing hydrogen and oxygen coming from the electrolyser unit automatic feed gas connected to the gas tanks outputs and ensuring the supply of hydrogen and oxygen in the absence of wind flow, the low-temperature hydrogen-oxygen fuel cell (electrochemical generators) whose input is connected to the automatic feeding unit gases, and its output - to the load, further includes the speed sensor is mechanically coupled to the rotor of the alternator, the function generator electrically coupled to the output of the speed sensor and providing an output signal proportional to the cubic dependence shaft speed wind turbine, an adder which one of its inputs connected to the output of the functional converter power sensor generates a signal proportional to the power consumer at a time which is fed to the second input of the adder, an integrator, the input of which is supplied the difference signal output from the adder, the zero-body and the direct converter control unit frequency (ZIF) whose inputs are connected to the output of the integrator, one of the zero-body output connected to a controlled rectifier, and its second output is connected to an automatic gas supply unit, a direct frequency converter, one input of which is connected with NHR control unit, the second power its input is connected with the stator windings of the alternator and its output connected to the load, the block synchronization input coupled to an output of RAMs, the inverter, one input of which receives a signal from the sync block, its second input coupled to an electrochemical generator, and the power inverter output is connected to the load.
Added elements make up the wind power plant control system and provide a more cost-effective and optimal mode of operation under variable wind speed and variable load value.
This is because the output zero-formed body according to the generator power ratio and supplied to the consumer and controllable rectifier 
R, when excess electrical power generated by the generator, and a gas supply unit automatically - P for its lack. In the first case of the power of wind turbine via a controllable rectifier supplied to the electrolytic cell for the electrolysis of water into hydrogen and oxygen, and in the second case - in the block automatic feed gas and electrochemical generator, a load which is the inverter provides the consumer AC power of stable frequency, wherein the synchronization is performed synchronization unit. Thus, increasing the efficiency of the installation is possible if the wind power installation management system that ensures an optimal distribution of energy generated and stored at a variable power generator and changing the load value. Despite the considerable cost of electrical energy for its conversion, the process is useful because the consumption of electrical energy during the day varies, and therefore, during the reduction spposa electricity can accumulate hydrogen and oxygen, and used to generate electricity, if necessary, using a hydrogen-oxygen fuel cells.
The figure shows a functional diagram of the installation.
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The wind power plant includes a wind turbine 1 is mechanically connected to the alternator 2 and the speed sensor 3, the output of which a signal via a function generator 4 is supplied to an adder 8, to the other input of which is fed a signal from the load power sensor 11, and the adder output from the integrator 7 It is connected to the control unit NHR 12, which controls the NCHP 14, providing consumers the power voltage stable frequency 13, and the zero-body 6, which is an excess of power |
The device operates as follows. During wind mode windmill 1 rotates the inductor of the alternator 2, which through direct frequency converter 14 sends electrical power consumer 13. The signal proportional to the value of the steady rotational speed sensor 3 is supplied to the function generator 4, which implements a cubic dependence of the output signal and further to a first input of the adder 8. The second input of the adder 8 is supplied with a power signal transmitter 11 that is proportional to the power consumer 13, in this moment of time. Since the adder 8, a signal proportional to the difference between the generator 2 and the consumer power 13 through integrator 7 is supplied to the control unit NCHP 12 and the zero-body 6. For the synthesis of the output RAMs 14 a predetermined voltage stable frequency control unit at P g> P n forms a straight line and for P r <P reverse phase sequence 4. If P i = P n signal to both outputs a zero-body 6 is absent. If P i>P and the first output-body zero signal is generated P, which changes under the influence of the opening angle controlled rectifier SCR 5, which serves as a load electrolyzer 10 produces hydrogen and oxygen and the accumulation of gas in the gas holders 9. In the case when P r <P the second output of the body 6 is formed by a zero signal - P, which output zero-body unit 6 is supplied to the automatic gas supply 15 of gas tanks 9 to the electrochemical generator 16, a load which is the inverter 17. To ensure parallel operation of the inverter 14 and the RAMs 17 to 13 general user, it is necessary for P r < R Applied synchronizing frequency and phase of output voltage 18.
Thus, the subject device provides optimal operation.
CLAIM
Windmills comprising a wind turbine, the shaft of which is mechanically coupled with an alternator, a controlled rectifier having an input connected to the power generator output, electrolytic water associated with its input with the output controlled rectifier, gas gas tanks storing hydrogen and oxygen coupled with the release of water electrolyzer block automatic gas supply coupled to the output of gas tanks, an electrochemical generator, the input and output of which are respectively connected to the automatic gas supply unit and the load, characterized in that, in order to increase efficiency, the apparatus further includes mechanically connected to the generator rotor speed sensor rotating electrical input which is connected to the functional converter, an adder connected to its input to an output of a functional transducer power sensor coupled to the second input of the adder and the load, an integrator connected to the output of the adder, the zero-body and direct the inverter control unit, inputs of which connected to the output of the integrator, wherein one of the zero-body output connected to a controlled rectifier, and its second output - with an automatic gas supply unit, a direct frequency converter, one of whose inputs is connected with the direct frequency converter control unit, second power of its input connected with a power output of the alternator and its output connected to the load, the block synchronization input coupled to an output of the direct frequency converter, an inverter, one input of which is connected to the synchronization unit, its second input coupled to an electrochemical generator, and the power of its output is connected to the load.
print version
Publication date 14.02.2007gg
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