KR101453715B1 - wind power generation controling apparatus and method - Google Patents

Abstract

The present invention relates to an apparatus and a method to control wind power generation to calculate an optimal energy efficiency value by analyzing a blade and the characteristics of a generator. According to the present invention, information on the characteristic factors of the generator in accordance to a generator model and information on the characteristic factors of the blade according to the blade type and size or wing shape, number of wings, radiator, and height are formed into a database and stored as a characteristics database; the information of the blade characteristics factor and the information of the generator characteristics factor are selectively applied in accordance to an operator-selected blade characteristics information, generator model characteristics information, and charging mode; a wind speed measured by a wind speed gauge unit and an RPM calculated by an RPM measuring unit are detected for a torque value to be calculated and stored; and wind power generation control is performed by analyzing the blade and generator characteristics based on the applied information of the blade characteristic factors, the information of the generator characteristic factor, and the calculated torque value.

Description

Technical Field [0001] The present invention relates to a wind power generation control apparatus and method,

The present invention relates to a wind power generation control apparatus and method, and more particularly, to a wind power generation control apparatus and method for analyzing characteristics of a blade and a generator to calculate an optimum value of energy efficiency.

The wind turbine generator includes a rotor head having a rotor, a noselle for accommodating a rotor and a generator, and a support column for supporting the nacelle. The rotor is rotated by wind power and the rotary shaft connected to the rotor head is rotated, The generator is operated to produce electricity from the generator. Further, in order to improve power generation efficiency, it is often the case that a turning mechanism control for controlling the nose cell rotation and a pitch control for rotating the rotary blade in the pitch direction are performed in accordance with the wind condition.

As such a wind turbine generator, there is a method of controlling the direction of the nacelle based on the measurement results of the anemometer and the weather vane attached to the nacelle. For example, when the fluctuation width of the wind direction measured by the weather vane is smaller than the first set value and the fluctuation width of the wind speed measured by the anemometer is smaller than the second set value, To perform power generation.

Korean Registered Patent No. 10-1110908 (Registered on Jan. 20, 2012) describes a wind power generator and a control method of a wind power generator that can turn a nucelle based on measurement results of an anemometer and an anemoscope. A nucelle turning mechanism for turning the nucelle and a nucelle turning mechanism for turning the nucelle on the basis of the wind direction obtained from the measurement result of the weather vane when the wind speed obtained from the measurement result of the anemometer exceeds the first threshold smaller than the cut wind speed And control means for controlling the nacelle revolving mechanism to stop the rotation of the nacelle when the wind speed obtained from the measurement result of the anemometer is below the first threshold value. According to the disclosed technique, even if the wind speed obtained from the measurement result of the anemometer is smaller than the cut wind speed, if the wind speed is larger than the first threshold value, the nugget is turned on the basis of the wind direction obtained from the measurement result of the weather vane, When the wind speed obtained from the measurement result of the anemometer is less than or equal to the first threshold value, it is possible to perform the normal operation more quickly than the cut wind speed, Since the rotation of the nacelle is stopped, the nacelle can be prevented from consuming a great amount of power that is frequently circulated, and even when the wind turbine is installed in a place where strong wind is not always constant, .

Korean Patent No. 10-1063112 (registered on Aug. 31, 2011) discloses a wind power generation system capable of independently controlling the pitch angle of each blade by using a data table of the wind speed and the rotation angle of the blade at each altitude have. According to the disclosed technique, in a wind power generation system, a plurality of blades; A main shaft connected to the plurality of blades through the hub and rotated according to the rotation of the blades; A nacelle generating electricity by using a rotational force by a main shaft; An anemometer mounted on an upper portion of a rear side of the nacelle and capable of measuring an air velocity in a predetermined speed range or a departure speed range at which a prescribed output starts to be generated; And a control device for controlling the pitch angle of each blade by using the wind speed and the rotation angle of each blade, wherein the control device comprises: a wind speed measuring part for measuring the wind speed using information transmitted from the anemometer; A storage unit for storing a data table of the wind speed and the rotation angle of the pitch according to the rotation angle of the blade; A rotation angle sensing unit for measuring a rotation angle of each of the blades; A control unit for determining the pitch angle of each blade by using the wind speed information transmitted from the wind speed measuring unit, the rotation angle information of each blade transmitted from the rotation angle sensing unit, and the data table; And a pitch drive unit for changing the blade pitch angle according to the control of the control unit, wherein a pitch angle corresponding to the rotation angle of each blade at a reference altitude wind speed between 0.5 m / s and 2 m / .

The conventional wind turbine generator as described above has been developed for a large capacity and has a disadvantage in that it can not produce efficient energy for a small capacity wind turbine (especially, a 3 KW or less wind turbine), and also predicts an average wind speed It is difficult to control the wind power generation in a difficult environment and it is difficult to control the RPM at low wind speed and it is difficult to calculate the maximum power.

Korean Patent No. 10-1110908 Korean Patent No. 10-1063112

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a wind power generation control apparatus and a wind power generation control apparatus for analyzing characteristics of a blade and a generator to calculate an optimum value of energy efficiency, ≪ / RTI >

According to an aspect of the present invention, there is provided a wind speed measuring apparatus comprising: an anemometer section for calculating an on / off period of a reed switch attached to a wind speed rotator to measure a current wind speed; An RPM measuring unit for inputting the magnet pole number of the generator and calculating the RPM by summing the rotation frequency of one pole of the generator; A database unit for storing information on generator characteristic coefficients according to a model of a generator, information on blade type and size, blade characteristic coefficient according to blade shape, number of blades, radius, height, and the like; The blade characteristic coefficient information and the generator characteristic coefficient information are selected and applied, and the wind speed measured by the anemometer section and the torque value corresponding to the RPM calculated by the RPM measuring section are calculated and stored, and the applied blade specific coefficient information and generator characteristic coefficient A controller for analyzing characteristics of the blades and the generator based on the information and the calculated torque value to perform wind power generation control; A braking unit for stopping the generator under the control of the control unit; And a monitor unit for displaying a wind power generation control operation state under the control of the control unit.

In one embodiment, the control unit determines whether to perform the intelligent control, whether it is the predetermined reference air speed, whether to perform the MPPT control, as a result of analyzing the characteristics of the blade and the generator, .

In one embodiment, the control unit detects the wind speed measured by the anemometer unit by intervals and detects an optimum distribution corresponding thereto. The control unit calculates the wind speed of the blades and the generator corresponding to the RPM and torque values calculated by the RPM measuring unit The optimum charging point is calculated and stored in the database, and the charging mode is determined according to the stored optimum charging point.

In one embodiment, the control unit detects the wind speed measured by the anemometer unit and the RPM calculated by the RPM measuring unit, reads the blade specific coefficient information and the generator characteristic coefficient information from the database unit, and calculates the optimum charging point The optimum charging point calculation step counts the number of optimal charging point calculation times and performs calculation and database for the optimum charging point when the optimum charging point calculation number is equal to or less than a predetermined reference number. And performs RPM control.

In one embodiment, the control unit controls the braking unit to stop the generator when the voltage input from the generator is equal to or higher than a predetermined limit input voltage or the voltage charged to the battery is equal to or higher than a predetermined limit charging voltage .

In one embodiment, the control unit calculates the loads of the blades and the generators corresponding to the RPM calculated by the RPM measuring unit, stores the calculated loads of the blades and the generators in the database, and stores them in the database unit, It is determined whether the measured wind speed at the anemometer part corresponds to a predetermined low speed and whether the RPM calculated by the RPM measuring part is increased or not. The charge amount is decreased when the charge voltage of the battery is equal to or greater than a predetermined set value and the charge amount is increased when the charge power is equal to or less than the predetermined maximum amount of charge and the RPM calculated by the RPM measurement unit is increased The current torque value becomes smaller than the previous torque value And the charge amount is increased or decreased at a predetermined interval when the current torque value is equal to or increased from the previous torque value.

According to another aspect of the present invention, information on generator characteristic coefficients according to a model of a generator, type and size of the blades, or information about the blade characteristic coefficient according to the wing shape, number of wings, radius, Storing in a database; Selectively applying the blade characteristic coefficient information and the generator characteristic coefficient information according to the blade characteristic information, the characteristic information of the generator model, and the charging mode by the operator's selection; Calculating and storing the torque value by detecting the wind speed measured by the anemometer part and the RPM calculated by the RPM measuring part; And performing wind power generation control by analyzing characteristics of the blades and the generator based on the applied blade specific coefficient information, generator characteristic coefficient information, and the calculated torque value.

In one embodiment, the step of performing the wind power generation control may include determining whether the intelligent control is performed, whether it is a predetermined reference wind speed, whether MPPT control is performed or not, and determining whether to perform the MPPT control according to a result of analyzing the characteristics of the blade and the generator. And performing an intelligent control according to the control information.

In one embodiment, the storing in the characteristic database may include collecting wind speeds measured in the anemometer section by intervals and detecting an optimal distribution map corresponding to the collected wind speeds; Calculating optimum charging points of the blades and generators corresponding to the RPM and torque values calculated by the RPM measuring unit, storing the optimized charging points in the database, and storing the databases in the characteristic database; And setting the charging mode to be determined by the stored optimum charging point.

In one embodiment, the step of performing the intelligent control may include detecting the wind speed measured by the anemometer section and the RPM calculated by the RPM measuring section, reading the blade specific coefficient information and the generator characteristic coefficient information from the characteristic database, Counting the number of optimal charging point calculations while calculating the charging points; Performing calculation and databaseization for the optimal charging point when the number of times of calculating the optimum charging point is equal to or less than a preset reference number; And performing RPM control using the optimal charging point when the number of times of calculating the optimum charging point exceeds a predetermined number.

In one embodiment, the step of performing the intelligent control may include controlling the braking unit to stop the generator when the voltage input from the generator is equal to or greater than a predetermined limit input voltage, or the voltage charged to the battery is equal to or greater than a predetermined limit charging voltage .

In one embodiment, the step of performing the intelligent control includes: stopping the rotation of the blades by shorting all three phases of the generator in the case of manual control; controlling the deceleration of the rotation speed in the case of strong wind in the case of automatic control; The battery is characterized in that it is decelerated or discharged by a predetermined discharge amount in order to extend the life of the battery when the rechargeable battery is fully charged.

In one embodiment, the step of performing the RPM control may include calculating the loads of the blades and the generators corresponding to the RPM calculated by the RPM measurement unit, storing the loads of the calculated blades and the generators in the database, Placing; Confirming whether the wind speed measured by the anemometer section corresponds to a predetermined low speed; Determining whether the detected RPM increases if the detected wind speed corresponds to a predetermined low speed; Reading and applying a load of the blade and generator corresponding to the detected RPM from the characteristic database when the detected RPM increases; Determining whether the battery charge voltage is equal to or greater than a predetermined set value and decreasing the charge amount; Increasing the charge amount by confirming that the charge power is equal to or less than a preset maximum power amount; Determining whether the current torque value is smaller than the previous torque value when the detected RPM decreases, and decreasing the charged amount; And increasing or decreasing the charge amount at a predetermined interval when the current torque value is equal to or greater than the previous torque value.

According to the present invention, by analyzing characteristics of a blade and a generator to calculate an optimum value of energy efficiency, it is possible to produce efficient energy of a small capacity (especially 3 KW or less) wind power generation, It is possible to perform the control of the wind power generation properly even in the environment where the wind speed is difficult to predict, the RPM control can be performed even at a low wind speed, and the maximum power can be calculated through the MPPT control.

1 is a view for explaining a wind power generation control apparatus according to an embodiment of the present invention.
2 is a flowchart illustrating a method of controlling wind power generation according to an embodiment of the present invention.
3 is a flowchart illustrating the intelligent control performing step in FIG.
FIG. 4 is a flowchart for explaining the RPM control performing step in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. However, the description of the present invention is merely an example for structural or functional explanation, and the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, the embodiments are to be construed as being variously embodied and having various forms, so that the scope of the present invention should be understood to include equivalents capable of realizing technical ideas. Also, the purpose or effect of the present invention should not be construed as limiting the scope of the present invention, since it does not mean that a specific embodiment should include all or only such effect.

Meanwhile, the meaning of the terms described in the present invention should be understood as follows.

It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

It should be understood that the singular " include "or" have "are to be construed as including a stated feature, number, step, operation, component, It is to be understood that the combination is intended to specify that it does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used predefined terms should be interpreted to be consistent with the meanings in the context of the related art and can not be interpreted as having ideal or overly formal meaning unless explicitly defined in the present invention.

Now, an apparatus and method for controlling wind power generation according to an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a view for explaining a wind power generation control apparatus according to an embodiment of the present invention.

1, the wind power generation control apparatus 100 includes an anemometer section 110, an RPM (Revolution per minute) measurement section 120, a braking section 130, a control section 140, A monitor 150, and a monitor 160. [

The anemometer portion 110 attaches an anemometer to the wind speed rotator. At this time, the on / off period of the reed switch attached to the wind speed rotator is calculated, the current wind speed is measured, and the measured wind speed is controlled And inputs it to the device unit 140.

In one embodiment, the anemoscope section 110 can calculate the wind speed by calculating the time of the input pulse.

In one embodiment, the anemoscope section 110 may compute the wind speed by counting the pulses per second at high speeds, dividing the time of the last pulse by one second, and summing the remainder to divide the counter of pulses by one second When the wind speed is calculated as "0" in the case of high-speed calculation, low-speed calculation can be applied, and the value can be applied as shown in Equation 1 below.

[Equation 1]

After storing the initially input number (i.e., the number of pulse counts per second) for a predetermined time (e.g., 10 seconds) and decreasing the number divided by a predetermined number (e.g., 10) , The number of pulse counts per second), and divide by a predetermined number (for example, 10). By doing so, it is possible to minimize the influence on the control unit 140 even when the noise is reduced and the normal pulse is erroneous due to abnormality of the input device.

The RPM measuring unit 120 calculates the RPM by inputting the number of poles of the magnet of the generator and summing the rotational frequency of one pole of the generator and inputs the calculated RPM to the controller unit 140 give.

In one embodiment, the RPM measuring unit 120 can calculate the RPM using the number of poles and the rotational frequency of the generator magnet. In this case, the number of poles can be applied to the input frequency per second, Equation 1 is applicable. That is, the RPM measuring unit 120 stores the number of the first input (i.e., the input frequency per second) for a preset time (for example, 10 seconds) and divides by a predetermined number (for example, 10) The input number per second (i.e., the input frequency per second) may be added and a value divided by a predetermined number (for example, 10) may be applied. By doing so, it is possible to minimize the influence on the control unit 140 even when the noise is reduced and the normal pulse is erroneous due to abnormality of the input device.

The braking unit 130 performs a braking operation manually or automatically. The braking unit 130 may be used to stop the manual generator, or may be operated under the control of the control unit 140 to prevent damage to the equipment due to overcharging or strong wind. To stop the generator.

The control unit 140 is a central processing unit (CPU) that performs PWM control and speed control and controls the type and size (or height, radius, and the number of blades) preset in the database unit 150 And selects and applies the generator characteristic coefficient information based on the model of the generator set in the database unit 150. The wind speed and wind speed input from the anemometer unit 110 and the RPM A torque value corresponding to the RPM inputted from the measuring unit 120 is calculated and the calculated torque value is stored and then the applied blade specific coefficient information and generator characteristic coefficient information and the calculated torque value are stored Analyzes the characteristics of the blades and the generator to perform wind power generation control, and outputs information on the operation state of the wind power generation control to the monitor unit 160.

In one embodiment, the control unit 140 can selectively apply characteristic information on the blade shape, number of wings, radius, and height of the blade through an input means such as a keypad or the like, A characteristic graph of input voltage, charging voltage, rated output, etc.) can be selectively applied and a charging method (ie, charging mode such as maximum power point tracking (MPPT) control, RPM control, intelligent control, etc.) can be selectively applied .

In one embodiment, the controller unit 140 determines whether intelligent control should be performed or a predetermined reference wind speed (low speed) or MPPT control should be performed as a result of analyzing characteristics of the blades and the generators, The intelligent control can be performed according to whether the determined intelligent control is performed, whether it is the predetermined reference air speed or whether the MPPT control is performed.

In one embodiment, in the case of intelligent control in an environment where it is difficult to predict the average wind speed, the controller unit 140 collects wind speeds input from the anemometer unit 110 by intervals, stores the data as wind speed data information, It is possible to calculate the optimum charging point of the blade and the generator corresponding to the RPM and the calculated torque value input from the RPM measuring unit 120, Stored in an inactive memory (i.e., the database unit 150), and can determine a charging mode based on the stored optimum charging points. The control unit 140 receives the wind speed output from the anemometer unit 110 and the RPM output from the RPM measurement unit 120 and reads blade specific coefficient information and generator characteristic coefficient information from the database unit 150 The optimum charging point calculation count is counted while calculating the optimal charging point as described above. If the counted number of optimal charging point calculation times is less than the predetermined reference number, the database for the optimal charging point On the other hand, if the predetermined number of times is exceeded, RPM control can be performed using the calculated optimum charging point.

In one embodiment, the control unit 140 controls the speed (deceleration control) during high-speed rotation to protect the blade, the controller, the battery, and the like, or decelerates the rotation speed when the battery is fully charged It is possible to stop the generator by controlling the breaking unit 130 when the voltage input from the generator is equal to or higher than a predetermined limit input voltage or the voltage charged to the battery is equal to or higher than a predetermined limit charging voltage, In this case, PWM (Pulse Width Modulation) control and speed control can be performed. In this case, in the case of the manual control, the rotation of the blade can be stopped by shorting all three phases of the generator. In the case of automatic control, the deceleration control for the rotation speed during the strong wind and the battery life It may be subjected to deceleration control or a predetermined discharge amount (trace amount) to extend it. Here, in the case of PWM control, there is a synchronous method of modulating using a carrier synchronized in time with a signal wave and an asynchronous method of modulating a carrier wave in synchronization with a signal wave.

In one embodiment, in the case of an intelligent control for favoring a low wind speed, the control unit 140 increases the load when the RPM is increased when the RPM applied average wind speed is uniform, The load of the blade and the generator corresponding to the RPM input from the RPM measuring unit 120 is calculated to reduce the load of the calculated blade and the generator It can be converted into a database and stored in an inactive memory. At this time, the control unit 140 receives the wind speed outputted from the anemometer unit 110 and confirms whether it corresponds to a predetermined low speed. Then, the control unit 140 receives the RPM outputted from the RPM measuring unit 120, The load of the blade and the generator corresponding to the input RPM is read from the database unit 150 and applied. When the battery charge voltage is equal to or higher than a predetermined set value, there is a risk of overcharging. In addition, if the input RPM is decreased, the current torque value of the generator is calculated as described above, and if the RPM is lower than the predetermined maximum power amount, If the calculated current torque value becomes smaller than the previous torque value, the amount of charge can be reduced. When submitted, the current torque value up or equal to the previous value of the torque may be to increase the amount of charge at a predetermined interval so that the rotational force of the blade increasing or decreasing.

In one embodiment, in the case of the MPPT control for calculating the maximum power, the control unit 140 detects the input power of the generator and compares the difference with the previous power, and according to the compared difference value PWM output can be controlled. At this time, the control unit 140 may also measure and apply current and voltage differences.

The database unit 150 includes a characteristic database (a generator characteristic database and a blade characteristic database), information on generator characteristic coefficients according to a generator model, and type and size (or height, radius, And stores the information on the blade characteristic coefficient in accordance with the database.

The monitor unit 160 displays the wind power generation control operation status according to the information output from the control unit 140 under the control of the control unit 140. [

The control unit 140 of the wind power generation control apparatus 100 having the above-described configuration calculates the current wind speed and the RPM of the generator through the anemometer 110 and the RPM measuring unit 120 (Particularly, 3KW or less) by calculating the torque value, storing the calculated torque value, and then analyzing the characteristics of the blades and the generator to calculate the optimum value of the energy efficiency, It can produce efficient energy of wind power generation, can perform wind power control properly even in an environment where it is difficult to predict average wind speed, can perform RPM control at low wind speed, and can calculate maximum power through MPPT control .

2 is a flowchart illustrating a method of controlling wind power generation according to an embodiment of the present invention.

Referring to FIG. 2, information on generator characteristic coefficients according to a model of a generator and information on blade characteristic coefficients according to the type and size (or height, radius, and number of blades) of the blades are converted into databases (I.e., the generator characteristic database and the blade characteristic database) in the database unit 150. [

The operator of the wind power generation control apparatus 100 selects characteristic information on the type and size (or wing shape, number of wings, radius, height, etc.) of the blade through an input means such as a keypad, (A characteristic graph relating to input voltage, charging voltage, rated output, etc.), or when selecting a charging method (that is, a charging mode such as MPPT control, RPM control or intelligent control) The control unit 140, after confirming the characteristic information of the selected blade, the characteristic information of the generator model, and the charging mode through the input unit, then, based on the characteristic information of the identified blade, the characteristic information of the generator model, The blade characteristic coefficient information and the generator characteristic coefficient information previously set in the database unit 150 are selectively applied (S201).

For example, the control unit 140 can selectively apply characteristic information on the blade shape, number of blades, radius, and height of the blades, and the characteristic graph of the generator model (i.e., input voltage, charge voltage, Etc.) can be selectively applied, and the charging method (that is, charging mode such as MPPT control, RPM control, intelligent control, etc.) can be selectively applied.

After the application of the characteristic information of the blade, the characteristic information of the generator model, and the charge mode to the anemometer section 110 attached to the wind speed rotator at step S201 described above, the on / off of the reed switch attached to the wind speed rotator, Off period to calculate the current wind speed and input the measured wind speed to the control unit 140. [ Also, the RPM measuring unit 120 calculates the RPM using the magnet pole number of the generator and the rotation frequency of one pole of the generator, and inputs the calculated RPM to the controller unit 140. The control unit 140 detects the wind speed inputted from the anemometer unit 110 and the RPM inputted from the RPM measuring unit 120 (S202).

The controller unit 140 calculates the torque value by the wind speed and RPM detected in step S202 and stores the calculated torque value (S203). Then, the controller unit 140 calculates the blade specific coefficient information and the generator characteristic coefficient information And analyzes characteristics of the blade and the generator based on the calculated torque value (S204).

The controller unit 140 determines whether the intelligent control should be performed according to the result of analyzing the characteristics of the blades and the generator at step S204 described above (S205), whether the predetermined reference wind speed (low speed) (S206) (S207), and performs intelligent control for wind power generation control in accordance with the determination of step S205, S206, or S207 described above (S208).

The control unit 140 outputs information on the operation state of the wind power generation control performed in the step S208 to the monitor unit 160. The monitor unit 160 monitors the operation state of the control unit 140 The control unit 140 displays the operation state of the wind power generation control operation and informs the operator of the operation state of the wind power generation control operation (S209).

3 is a flowchart illustrating the intelligent control performing step in FIG.

3, the control unit 140 can perform intelligent control even in an environment where it is difficult to predict the average wind speed. First, the control unit 140 detects the wind speed input from the anemometer unit 110, The RPM measuring unit 120 detects the RPM inputted from the RPM measuring unit 120 and calculates the optimal distribution map corresponding to the detected wind speed data information, After calculating the optimum charging point of the blade and the generator corresponding to the detected RPM and the calculated torque value, the calculated optimal charging point is converted into a database and stored in the inactive memory 150), and sets the database unit 150 to determine the charging method based on the stored optimum charging point.

The control unit 140 detects the wind speed inputted from the anemometer 110 and the RPM inputted from the RPM measuring unit 120 as in the above described step S202, The generator characteristic coefficient information is read and the optimum charging point of the blade and the generator corresponding to the detected RPM and the calculated torque value is calculated (S301).

The control unit 140 stores the optimal charging points calculated in step S301 in the database in the non-volatile memory (S302), and simultaneously counts the number of times the optimum charging points are calculated (S303). Then, the control unit 140 checks whether the number of optimal charging point counts counted in the above-described step S303 exceeds a predetermined reference number (S304).

When the number of times of calculating the optimum charging point is equal to or less than the preset reference number in the above-described step S304, the control unit 140 returns to the above-described step S301 to continue calculation and databaseing of optimum charging points.

When the number of optimal charging point calculation times exceeds the preset reference number in step S304, the control unit 140 performs RPM control using the optimal charging point calculated in step S301 described above (S305 ).

In one embodiment, the control unit 140 may control the speed (deceleration control) to protect the blades, the controller, the battery, and the like in the case of a high rotation speed because the rotation speed is faster than a predetermined limit speed. Further, after checking the charged amount of the storage battery, the control unit 140 may reduce the rotating speed when the storage battery is fully charged.

For example, after checking the magnitude of the voltage input from the generator, the control unit 140 determines whether the magnitude of the detected input voltage is equal to or greater than a predetermined limit input voltage, The braking unit 130 may stop the generator by controlling the braking unit 130. The braking unit 130 may be used when the manual generator is stopped, The generator may be automatically stopped under the control of the control unit 140 in order to prevent damage to equipment due to strong winds.

For example, in the case of manual control, the control unit 140 may short-circuit all three phases of the generator to stop the rotation of the blades. In the case of automatic control, the control unit 140 may perform deceleration control for the rotational speed, In order to extend the life of the battery when the rechargeable battery is fully charged, the battery may be decelerated or discharged by a predetermined discharge amount (minute amount).

For example, the control unit 140 may perform the PWM control and the speed control when the battery is fully charged after checking the charged amount of the battery.

FIG. 4 is a flowchart for explaining the RPM control performing step in FIG.

Referring to FIG. 4, the control unit 140 may perform RPM control to favor low wind speed. First, when RPM is uniform, when the RPM increases, the load increases and the RPM decreases The control unit 120 detects the RPM inputted from the RPM measuring unit 120 and outputs the load of the blade and the generator corresponding to the detected RPM in order to reduce the load to a predetermined value for a predetermined time, And loads the measured blades and generators into a database and stores them in an inactive memory.

After detecting the wind speed outputted from the anemometer part 110, the control unit 140 checks whether the detected wind speed corresponds to a predetermined low speed (S401).

If the detected wind speed corresponds to a predetermined low speed in step S401, the control unit 140 determines whether or not the detected RPM increases after detecting the RPM output from the RPM measuring unit 120 (S402).

When the detected RPM increases in the above-described step S402, the control unit 140 reads the load of the blade and the generator corresponding to the detected RPM from the database unit 150 and applies it (S403). At this time, After confirming the voltage (S404), it is confirmed whether or not the confirmed charging voltage is equal to or greater than a predetermined set value (S405). In this case, there is a possibility of overcharging, so that the charging amount is decreased (S406). After checking the charging power of the battery (S407), the control unit 140 checks whether the determined charging power is equal to or less than the preset maximum power amount (S408), and increases the charging amount in this case (S409 ).

If the detected RPM decreases in step S402, the control unit 140 calculates the current torque value of the generator as in step S203 described above and confirms the calculated current torque value (S410) It is confirmed whether or not the torque value is smaller than the previous torque value (S411). In this case, the charging amount is decreased (S412). In addition, when the calculated current torque value is equal to or greater than the previous torque value, the controller unit 140 increases or decreases the charging amount at a predetermined interval so that the rotational force of the blade increases (S413).

The embodiments of the present invention are not limited to the above-described apparatuses and / or methods, but may be implemented by a program for realizing functions corresponding to the configuration of the embodiment of the present invention, a recording medium on which the program is recorded, And such an embodiment can be easily implemented by those skilled in the art from the description of the embodiments described above.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

100: Wind power control device
110: anemometer part
120: RPM measuring unit
130:
140:
150:
160: Monitor section

Claims (11)

An anemometer part for measuring the current wind speed by calculating the on / off period of the reed switch attached to the wind speed rotator;
An RPM measuring unit for inputting the magnet pole number of the generator and calculating the RPM by summing the rotation frequency of one pole of the generator;
A database unit for storing information on generator characteristic coefficients according to a model of a generator, information on blade type and size, blade characteristic coefficient according to blade shape, number of blades, radius, height, and the like;
The blade characteristic coefficient information and the generator characteristic coefficient information are selected and applied, and the wind speed measured by the anemometer section and the torque value corresponding to the RPM calculated by the RPM measuring section are calculated and stored, and the applied blade specific coefficient information and generator characteristic coefficient A controller for analyzing characteristics of the blades and the generator based on the information and the calculated torque value to perform wind power generation control;
A braking unit for stopping the generator under the control of the control unit; And
And a monitor unit for displaying a wind power generation control operation state under the control of the control unit.
The control apparatus according to claim 1,
And a controller for calculating an optimum charging point of the blades and the generator corresponding to the RPM and the torque value calculated by the RPM measuring unit, And the charging mode is determined based on the stored optimum charging point.
The control apparatus according to claim 2,
An air speed measured by the anemometer section and an RPM calculated by the RPM measuring section are detected and the blade specific coefficient information and the generator characteristic coefficient information are read from the database section to calculate the optimum charging point and the optimum charging point calculating number is counted And performs calculation and database for the optimum charging point when the number of optimal charging point calculation times is equal to or less than a predetermined reference number and performs RPM control using the optimum charging point when the number of times exceeds a preset number Wind power control equipment.
The control apparatus according to claim 1,
The load of the blade and the generator corresponding to the RPM calculated by the RPM measuring unit is calculated and then the load of the calculated blade and the generator is stored in the database and stored in the database unit, The load of the blade and the generator corresponding to the RPM calculated by the RPM measurement unit is read from the database unit and applied, and when the battery charging The charging amount is decreased when the voltage is equal to or greater than the predetermined set value and the charging amount is increased when the charging power is equal to or less than the preset maximum power amount. If the RPM calculated by the RPM measuring unit is decreased, When the torque value becomes smaller than the torque value, the charging amount is decreased. The wind power generation torque control device, comprising a step of increasing the amount of power produced by the predetermined distance in case an increase or equal to the previous value of the torque or decreasing.
Information on generator characteristic coefficients according to the model of the generator, type and size of the blades, or blade characteristic coefficients according to the blade shape, the number of wings, the radius, and the height are stored in a database and converted into a database;
Selectively applying the blade characteristic coefficient information and the generator characteristic coefficient information according to the blade characteristic information, the characteristic information of the generator model, and the charging mode by the operator's selection;
Calculating and storing the torque value by detecting the wind speed measured by the anemometer part and the RPM calculated by the RPM measuring part; And
And performing wind power generation control by analyzing characteristics of the blade and the generator based on the applied blade specific coefficient information and generator characteristic coefficient information and the calculated torque value.
6. The method of claim 5, wherein the step of performing the wind power generation control comprises:
Determining whether or not to perform the intelligent control, whether or not it is the predetermined reference air speed, whether to perform the MPPT control, and performing the intelligent control according to the determination, according to the result of analyzing the characteristics of the blade and the generator Wind power generation control method.
7. The method of claim 6,
Collecting wind speeds measured in the anemometer section by intervals and detecting an optimal distribution map corresponding thereto;
Calculating optimum charging points of the blades and generators corresponding to the RPM and torque values calculated by the RPM measuring unit, storing the optimized charging points in the database, and storing the databases in the characteristic database; And
And setting the charging mode to be determined by the stored optimum charging point.
8. The method of claim 7, wherein performing the intelligent control comprises:
An air speed measured by the anemometer section and RPM calculated by the RPM measuring section are detected and the blade specific coefficient information and the generator characteristic coefficient information are read from the characteristic database to calculate the optimum charging point and the optimum charging point calculating number is counted step;
Performing calculation and databaseization for the optimal charging point when the number of times of calculating the optimum charging point is equal to or less than a preset reference number; And
And performing RPM control using an optimum charging point when the number of times of calculating the optimum charging point exceeds a preset number.
9. The method of claim 8, wherein performing the intelligent control comprises:
Wherein when the voltage input from the generator is equal to or higher than a predetermined limit input voltage or the voltage charged by the battery is equal to or higher than a predetermined limit charging voltage, the generator is stopped by controlling the breaking portion.
10. The method of claim 9, wherein performing the intelligent control comprises:
In the case of the manual control, all three phases of the generator are short-circuited to stop the rotation of the blades. In the case of automatic control, the deceleration control for the rotational speed at the time of strong wind and the deceleration control or the machine And discharging the wind power by a predetermined discharge amount.
The method of claim 8, wherein the performing the RPM control comprises:
Calculating a load of the blade and the generator corresponding to the RPM calculated by the RPM measuring unit, storing the load of the calculated blade and the generator in a database, and storing the database in the characteristic database;
Confirming whether the wind speed measured by the anemometer section corresponds to a predetermined low speed;
Determining whether the detected RPM increases if the detected wind speed corresponds to a predetermined low speed;
Reading and applying a load of the blade and generator corresponding to the detected RPM from the characteristic database when the detected RPM increases;
Determining whether the battery charge voltage is equal to or greater than a predetermined set value to reduce the charge amount;
Increasing the charge amount by confirming that the charge power is equal to or less than a preset maximum power amount;
Determining whether the current torque value is smaller than the previous torque value when the detected RPM decreases, and decreasing the charged amount; And
And increasing or decreasing the charge amount at a predetermined interval when the current torque value is equal to or greater than the previous torque value.

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