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INVENTION
Russian Federation Patent RU2210854
wind turbine
Name of the inventor: Balyberdin LL .; Galanov VI .; Volosenko AV .; Evstratov RV .; Kutsenko BN .; Semenov PV .; Smirnova L.YU .; Suslov OV .; Chesnokov A.
The name of the patentee: Balyberdin Leonid Leonidovich; Galanov Vladimir; Volosenko Alexander; Evstratov Ruslan Vladimirovich; Kutsenko Boris; Semenov Pavel; Smirnova Lyudmila Y.; Suslov Olga; Alexei Chesnokov
Address for correspondence: 194021, St. Petersburg, ul. Khlopina, 3, kv.30, BN Kutsenko
Starting date of the patent: 2001.04.18
The invention relates to wind energy and can be used to create wind power and automation modes of wind power, both standalone and working on a common electrical network. The technical result is to increase the quality of produced energy. Wind power installation comprises a toothed differential transmission units which are mechanically connected to the shaft of a wind turbine, alternator shaft and adjustable machine DC respectively. Anchor regulated DC machine is electrically connected to the second anchor DC machine is mechanically connected to the alternator shaft. The second machine has an additional DC excitation winding connected to the amplifying device. Input of the latter connected to an output controller, one input of which is connected to the output of the speed generator, and the other - to the output of the adder. Login shaper rate connected to the output shaft speed sensor of a wind turbine, a second input of the adder connected to an active power setpoint.
DESCRIPTION OF THE INVENTION
The invention relates to wind power generation, and may be used when creating a wind power plant.
The closest the technical essence and achieved technical result is a wind power plant comprising a wind turbine, the shaft of which is mechanically connected to the shaft of the alternator, controlled rectifier, the input of which is connected to the stator windings of the alternator shaft speed sensor of a wind turbine, to the output of which is connected input functional converter that implements a cubic dependence, an adder having inputs connected respectively to the output of a functional transducer and output active power load sensor, and the output of the adder via an integrator connected to the control input of a controlled rectifier, a sensor of the wind speed and the differentiator, and a wind velocity sensor output is connected through differentiator to an additional input of the adder [1].
The disadvantage of the prototype is the presence of harmonics in the output current and voltage of the controlled rectifier, which decreases the quality of electric power transmitted to the grid.
The object of the invention is to provide a wind turbine, providing improvement of quality of produced energy.
The problem is solved in that the device includes a wind turbine, alternator, sensor speed shaft of a wind turbine, the active power load sensor, an adder, one input of which is connected to the output of the active load power sensor.
New compared to the prior art is that wind power installation comprises a toothed differential gear, one of which units are mechanically connected to a shaft of a wind turbine, the second link - with the shaft of the alternator, and the third link - a regulating direct current machine, which anchor is electrically connected with the armature second machine DC mechanically coupled to the shaft of the alternator, the second machine DC has an additional excitation winding connected to the amplifying device having an input connected to the output of the controller, one input of which is connected to the output of the speed generator, and the other - to the output of the adder, and the input speed generator coupled to an output shaft speed sensor of a wind turbine, and to a second input of the adder connected to an active power setpoint.
New collection of these signs is necessary and sufficient to obtain the technical result, since it is possible to stabilize the frequency of the current and voltage of electricity generated by ensuring constancy of speed and load angle of the generator.
Brief Description of the drawing, which shows a block diagram of the device.
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Wind power plant includes a wind turbine 1, gear differential gear 2, one of which links is connected to the wind turbine 1, the second unit - the generator 3 an alternating current, and a third link - for the electric machine 4 DC anchor which is electrically connected to the armature of the second electric machine 5 . Anchor electric machine 5 mechanically connected to the alternator shaft 3 AC. The electrical machine 5 has an additional excitation winding 6 connected to the amplifying device 7 having an input coupled to the output of the controller 8, one of whose inputs is connected to the output speed generator 9, and the other input - to the output of adder 10. One input of the adder 10 is connected to active power output of the sensor 11, the load input is connected to the power grid 12; the other input of the adder 10 is connected to the hand dial 13 active power. On the shaft of the wind turbine 1, a sensor 14 of a wind turbine shaft speed, the output of which is connected to the input of the shaper 9 speed. Anchor winding 3 AC generator is connected via a switch 15 to the power grid 12. |
Wind power installation operates as follows
Speed monitoring is carried out of a wind turbine 1 sensor 14 shaft speed wind turbine. The signal from sensor 14 is converted into a frequency shaper 9 velocity signal from which has a nonlinear relationship, the controller 8 is amplified in an amplifier 7, and is used to modify the current in the excitation coil 6 of the electrical machine 5. As a result, the current change in the excitation winding 6 varies the armature voltage and rotational speed of the electric machine 4 to a value that ensures the stability of rotational speed of the generator AC 3. Setpoint active power setpoint is set using the 13 active power and maintained as a result of comparing the level of the signal from the sensor 11 of active power to the signal level at the output of the active power set point 13. The difference signal modifies the excitation current in the excitation coil 6, thereby changing the current in the armature circuit of electric machines 5 and 4, respectively, and the reference point in the transfer differential gear 2.
The device can be used to create wind power and automation modes of wind power, both standalone and working on a common electrical network.
INFORMATION SOURCES
1. AS 1300625 (USSR), H 02 P 9/00. Wind power installation. / RI Mustafayev, YM Kurdyukov, BA Listengarten, VG LeDuc. Publ. in BI 12, 1987.
CLAIM
Wind power installation comprising a wind turbine, alternator, the sensor speed shaft of the wind turbine, the active power sensor load adder, one input of which is connected to the output of active power load sensor, characterized in that it has a toothed differential gear, one of which links mechanically connected to a shaft of a wind turbine, the second link - with the shaft of the alternator, and the third link - a regulating machine DC anchor which is electrically connected to the armature of the second machine DC mechanically coupled to the shaft of the alternator, the second machine DC has additional excitation winding connected to the amplifying device having an input connected to the output of the controller, one of whose inputs is connected to the output of the speed generator, and the other to the output of the adder, wherein the input generator speed connected to the output shaft speed sensor of a wind turbine and to a second input adder connected active power setpoint.
print version
Publication date 11.01.2007gg
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