KR20130113805A - High capacity wind-power generator, method for controlling high capacity wind-power generator - Google Patents

Abstract

PURPOSE: A high capacity wind power generator and a control method thereof are provided to consistently control the variation of output using a battery connected to a DC link because a system connected power converter is needed for power reduction due to change in the output by the change in wind power. CONSTITUTION: A high capacity wind power generator comprises a generator (110), a first converter (130), a DC link (140), a battery control unit (150), and a second converter (170). The generator supplies power which is converted into electric energy from kinetic energy of a blade which is rotated by wind power. The first converter outputs by converting an alternating current (AC) voltage, which is inputted power through the generator, into a direct current (DC) voltage. The DC link supplies the DC voltage by being connected with the first converter. The battery control unit is connected with the DC link, and charges an installed battery with the DC voltage in the DC link as an electrical energy or discharges the battery which is charged with the DC voltage, depending on the power outputted to an electrical power system. One side of the second converter is connected to the DC link and the other side is connected to the battery control unit, and the second converter converts the DC voltage, which is supplied from at least one between the DC link and the battery control unit, into the AC voltage in order to supply the voltage to the electrical power system. [Reference numerals] (110) Generator; (120) First filter; (130) First converter; (140) DC link; (150) Battery control unit; (160) Battery; (170) Second converter; (180) Second filter; (190) Control unit

Description

High Capacity Wind-Power Generator, Method for Controlling High Capacity Wind-Power Generator

The present embodiment relates to a high capacity wind turbine generator and a method for controlling the high capacity wind turbine. More specifically, it is based on a power converter with a battery connected to the DC link to meet the price and power system, and a bi-direction converter connected in series for battery charging and discharging. The present invention relates to a control method of a high capacity wind turbine and a high capacity wind turbine that can easily increase battery capacity due to the modularization of the converter by applying a control algorithm.

The contents described in this section merely provide background information on the present embodiment and do not constitute the prior art.

Wind power is a pollution-free energy source in the natural state and is the most economical energy source among alternative energy sources. A wind turbine generator is a generator that converts wind energy into mechanical energy using various types of windmills and drives the generator with this mechanical energy to generate electric power. These wind generators are powered by wind, which is infinitely clean energy, and thus is a pollution-free power generation method without problems such as heat pollution, air pollution, and radiation leakage due to heat generation, unlike conventional power generation methods using fossil fuels or uranium. As a result, wind power generation is currently recognized as the most promising alternative energy source. In addition, since the wind turbine is simple in structure and installation, and can be easily operated and managed, it can be used unmanned and automated, and thus its utilization is increasing worldwide.

In the situation where wind power generation systems and large-scale wind farms with increasing generation capacity are being installed recently, the stability and sustainability of the wind power generation system is important enough to greatly affect the characteristics of the power grid. As a result, even in extreme conditions, the wind power generation system must be connected to the grid to generate power.

The present embodiment applies a battery charge / discharge control algorithm for safety and life extension based on a power converter with a battery connected to a DC link and a bidirectional converter connected in series for battery charging and discharging to meet a price and power system. The main purpose is to provide a high capacity wind turbine and a control method of a high capacity wind turbine that can easily increase the battery capacity due to the modularity of the.

According to an aspect of the present embodiment to achieve the above object, a generator for supplying power to convert the kinetic energy of the blade (Blade) rotated by wind power into electrical energy; A first converter converting an alternating current (AC) voltage, which is electric power input through the generator, into a direct current (DC) voltage and outputting the converted voltage; A DC link connected to the first converter to supply the DC voltage; A battery controller connected to the DC link and configured to discharge or charge the charged DC voltage as electrical energy to a battery provided with the DC voltage of the DC link according to power output to a power system; And a second side connected to the DC link and the other side connected to the battery controller to convert the DC voltage supplied from at least one of the DC link and the battery controller to the AC voltage and supply the DC voltage to the power system. Provided is a high capacity wind turbine comprising a converter.

In addition, according to another aspect of the present invention, the step of supplying power to convert the kinetic energy of the blades rotated by the wind in the generator into electrical energy; Converting an alternating current (AC) voltage, which is electric power input through the generator, into a direct current (DC) voltage in a first converter; Supplying the DC voltage connected to the first converter in a DC link; Connecting to the DC link according to the power output from the battery control unit so that the battery having the DC voltage of the DC link is charged as electrical energy or discharged from the charged DC voltage; And a second side connected to the DC link in the second converter and the other side connected to the battery control unit, converting the DC voltage supplied from at least one of the DC link and the battery control unit into the AC voltage to the power system. It provides a control method of a high capacity wind power generator comprising the process of supplying.

As described above, according to the present embodiment, since the grid-connected power converter for mitigating the output is required due to the change of the output caused by the fluctuation of the wind in the wind power generator, the variation of the output is controlled using the battery connected to the DC link. In addition to being able to control constantly, if the output through the system is unstable, the power charged in the battery can also be used as the power of the wind turbine system. In addition, according to the present embodiment, it is possible to secure a power conversion circuit topology technology that satisfies the new renewable energy system linkage criteria, and a charge / discharge design technology for extending the safety and life of the battery. There is an effect that can be maximized.

1 is a block diagram schematically showing a high capacity wind power generator according to the present embodiment,
2 is a block diagram schematically illustrating the battery controller according to the present embodiment;
3 is a flowchart illustrating a control method of the wind turbine generator according to the embodiment;
4 is a flowchart illustrating a charging / discharging method of a battery controller according to the present embodiment;
5 is an exemplary view showing a battery charging profile according to the present embodiment.

Hereinafter, the present embodiment will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing a high capacity wind turbine generator according to the present embodiment.

The high-capacity wind power generation device according to the present embodiment includes a generator 110, a first filter 120, a first converter 130, a DC link 140, a battery controller 150, a battery 160, and a second converter ( 170, a second filter 180, and a controller 190. In the present embodiment, the high-capacity wind power generator includes the generator 110, the first filter 120, the first converter 130, the DC link 140, the battery controller 150, the battery 160, and the second converter 170. ), But it is described as including only the second filter 180 and the control unit 190, but this is merely illustrative of the technical idea of the present embodiment, if the person having ordinary knowledge in the technical field to which this embodiment belongs Various modifications and variations to the components included in the high-capacity wind turbines will be applicable without departing from the essential features of this embodiment.

The generator 110 supplies power by converting kinetic energy of a blade rotating by the wind into electrical energy. Here, the blade is mounted on the rotatable shaft to produce the rotational energy by the wind, the generator 110 generates electric power by using a turbine (Turbine) from the rotational energy of the blade. At this time, the power generated by the generator 110 is in the form of alternating current (AC), which is not suitable to be directly supplied to the power system.

The first filter 120 removes harmonics from the AC voltage according to the type of the generator 110. The first filter 120 calculates each filter value to satisfy a power factor or total harmonic distortion (THD :) required by the generator 110, and as a result, a ripple current. Can be reduced. In addition, the first filter 120 is preferably a du / dt filter, but is not necessarily limited thereto.

The first converter 130 converts the power produced by the generator 110 into a power suitable for supplying the power system associated with the wind turbine. To this end, the first converter 130 includes a converter that converts the AC power produced by the generator 110 into DC power. The first converter 130 converts an alternating current (AC) voltage, which is electric power input through the generator 110, into a direct current (DC) voltage, and outputs the converted voltage. The first converter 130 may be preferably implemented as a 3 Level NPC Integrated Gate Commutated Thyristor (IGCT) rectifier, but is not necessarily limited thereto. Meanwhile, when the wind is below the rated speed, the first converter 130 may control the torque and the magnetic flux interlinkage of the generator 110 for maximum power point tracking (MPPT). Can be.

The DC link 140 is connected to the first converter 130 to supply a DC voltage to the battery controller 150 or the second converter 170. At this time, since the voltage of the DC link 140 is constant, it can be deviated from the concept of harmonics and power factor, so that the second converter 170 converts the voltage of the DC link 140 into an AC voltage having a predetermined magnitude and constant frequency. . The DC link 140 may be preferably implemented as a 3 Level NPC IGCT rectifier, but is not necessarily limited thereto. In addition, the DC link 140 is a DC voltage source, and the voltage of the DC link 140 must be kept constant. That is, the DC link 140 is provided with a DC link 140 for the connection between the converter included in the first converter 130 and the inverter (Inverter) included in the second converter 170. On the other hand, the DC link 140 is charged with a constant voltage, the voltage of the DC link 140 is not necessarily transmitted to the battery control unit 150, the second converter 170 without passing through the battery control unit 150. Can be supplied directly.

The battery controller 150 is connected to the DC link 140 and discharged or charged as electrical energy to the battery 160 provided with a DC voltage of the DC link 140 according to the power output to the power system is discharged Be sure to

The battery controller 150 forms a bi-direction converter in series according to the size of the battery 160, and the bidirectional converter receives the DC voltage received from the DC link 140 according to the power output to the power system. After DC / DC converting, the battery 160 is charged according to the sensed voltage of the battery 160 or the charged DC voltage is discharged according to the power output to the power system. The battery controller 150 senses the voltage of the battery 160, checks the power output from the power system, and then displays the initial charging mode (Pre-Chage) based on the sensed voltage of the battery 160 and the power of the checked power system. Mode, Constant Current Mode, and Constant Voltage Mode.

Hereinafter, an operation process of charging and discharging the battery controller 150 will be described in more detail. When the battery controller 150 operates or charges in the discharge mode based on the power output to the power system, when the voltage Vb of the sensed battery 160 is less than the reference voltage Vpre of the battery 160, the initial charging mode When the voltage (Vb) of the sensed battery 160 is less than the voltage source (Vcc) of the battery 160 operates in the constant current mode, the voltage (Vb) of the sensed battery is less than the maximum voltage (Vmax) of the battery In case of operation in constant voltage mode.

The battery controller 150 forms the bidirectional converter and the battery 160 as one module, and has a structure in which a plurality of formed modules are connected in series. That is, the battery controller 150 operates to operate as a buck converter when the battery 160 is charged and to operate as a boost converter when the battery 160 is discharged. Here, the buck converter is a DC-DC converter for decompression, similar to the boost converter for boosting, and as a boost converter, two switches (active switching device, one diode each) as a mode switching power supply. The boost converter is a DC-DC converter for boost, using two switches (active switching element, one diode each), one inductor and one capacitor as the mode switching power supply. As the output fluctuation of the wind power generator is large, the initial charging mode and the constant current mode according to the voltage state of the battery 160 through the control to meet the effective power evaporation rate, sudden deceleration adjustment, etc. of the renewable energy system linkage criteria And control to charge in any one of the constant voltage modes, and discharge the DC voltage charged in the battery 160 in the constant current mode.

In addition, the battery controller 150 is based on the voltage of the sensed battery 160 and the power of the identified power system when the power output to the power system is low power (low voltage) or the output voltage is unstable or a power failure occurs ( The electrical energy charged in the 160 is to be supplied to the power system.

The battery 160 charges or discharges a DC voltage supplied from the DC link 140 under the control of the battery controller 150. The battery 160 may be a lithium ion (Li-Ion) or a lithium poly (Li-Poly) battery, but is not limited thereto. Meanwhile, the wind power generator according to the present embodiment associates the battery 160 to the DC link 140 to satisfy a grid code called effective power evaporation rate control, which is a charging system of the battery 160. Has the capacity as shown in [Table 1]. That is, in the high-capacity wind power generation device according to the present embodiment, the capacity of the battery 160 to satisfy the effective power evaporation rate adjustment may be as shown in [Table 1].

If it is necessary to switch between the power output to the power system and the voltage discharged from the battery 160, the provided switching element may be used. In addition, the wind power generation device may be provided with a sensor for checking the low power (low voltage) of the power system, the output voltage is unstable or blackout. That is, the battery control unit 150 is a low power (low voltage) in the power system, the output voltage is unstable or the voltage charged in the battery 160 at the time of power failure through the second converter according to the result of the sensor provided in the power system Control to be supplied to the power system. In addition, as a result of the detection of the sensor provided in the power system, the system low power (low voltage), the output voltage is unstable or the power failure is eliminated, and when the power is left through the generator 110 can be controlled to charge the battery 160 to the corresponding power. have.

The second converter 170 includes an inverter that converts the DC power converted through the first converter 130 into AC power of a form suitable for supplying the power system again. The second converter 170 has one side connected to the DC link 140 and the other side connected to the battery control unit 150 to exchange the DC voltage supplied from at least one of the DC link 140 and the battery control unit 150. It is converted into voltage and supplied to the power system. The second converter 170 allows a constant frequency and voltage to be supplied to the power system. Thereafter, the power output from the second converter 170 may be supplied to the power system by changing the voltage by a transformer.

The second filter 180 removes harmonics from the AC voltage output from the second converter 170 to match the power system. The second filter 180 is coupled to the secondary side of the transformer connected to the power system to filter the output value. For example, as shown in Table 2, the second filter 180 calculates each filter value to satisfy the total harmonic distortion (THD) of IEEE 519, and as a result, the ripple current can be reduced. The Total Demand Distortion (TDD) reference value depends on the Isc / IL ratio of the wind turbine generator according to the present embodiment, and the value corresponds to an inverse value of the source impedance.

The controller 190 controls the first converter 130, the DC link 140, and the second converter 170. The controller 190 limits the effective power output evaporation rate for power output to the power system required by the grid code (eg, limited to 10% / min of the rating in the domestic case). The controller 190 serves to control the wind turbine and may include a separate controller for controlling the first converter 130, the DC link 140, and the second converter 170, respectively. In addition, it may include a separate control unit for controlling the turbine of the generator 110. In addition, the controller 190 may further include other components required for driving the wind power generator as necessary.

2 is a block diagram schematically illustrating a battery controller according to an exemplary embodiment.

As shown in FIG. 2, the battery controller 150 forms a bidirectional converter in series according to the size of the battery 160, and after the bidirectional converter converts the DC voltage received from the DC link 140 to DC / DC, According to the voltage of the battery 160 sensed in accordance with the power output to the power system to charge the battery 160 or discharge the charged DC voltage.

That is, as shown in FIG. 2, the battery controller 150 forms the bidirectional converter and the battery 160 as one module, and has a structure in which a plurality of formed modules are connected in series. That is, the battery controller 150 operates to operate as a buck converter when the battery 160 is charged and to operate as a boost converter when the battery 160 is discharged. Here, the buck converter is a DC-DC converter for pressure reduction, similar to the boost converter for boosting, and as a boost converter, two switches (active switching element, one diode each), an inductor and a capacitor as a mode switching power supply. The boost converter is a DC-DC converter for boost, using two switches (active switching element, one diode each), one inductor and one capacitor as a mode switching power supply.

The battery controller 150 is based on the sensed voltage of the battery 160 and the power of the identified power system when the power output to the power system is low power (low voltage), when the output voltage is unstable or a power failure occurs the battery 160 The electric energy charged in the power is to be supplied to the power system.

3 is a flowchart illustrating a control method of the wind turbine generator according to the present embodiment.

The generator 110 provided in the wind power generator supplies power converted from the kinetic energy of the blade rotating by the wind into electrical energy (S310). In step S310, the blade is mounted on the rotatable shaft to produce rotational energy by the wind, the generator 110 generates power by using a turbine from the rotational energy of the blade. At this time, the power generated by the generator is in the form of AC, which is not suitable to be supplied directly to the power system. In operation S310, the first filter 120 removes harmonics from the AC voltage according to the type of the generator 110.

The first converter 130 provided in the wind power generator 130 converts an AC voltage, which is electric power input through the generator 110, into a DC voltage and outputs the converted DC voltage (S320). In operation S320, the first converter 130 converts the power produced by the generator 110 into power of a form suitable for supplying the power system associated with the wind turbine. To this end, the first converter 130 includes a converter that converts the AC power produced by the generator 110 into DC power.

After step S320, the DC link 140 provided in the wind turbine is connected to the first converter 130 to supply a DC voltage to the battery controller 150 or the second converter 170. At this time, the voltage of the DC link 140 may deviate from the concept of harmonics and power factor, so that the second converter 170 converts the voltage of the DC link 140 into an AC voltage having a predetermined magnitude and a predetermined frequency.

The battery control unit 150 provided in the wind power generator is connected to the DC link 140 and charged or charged as electrical energy to a battery provided with a DC voltage of the DC link 140 according to the power output to the power system. The voltage is discharged (S330).

In operation S330, the battery controller 150 provided in the wind power generator senses the voltage of the battery 160, checks the power output from the power system, and then checks the voltage of the sensed battery 160 and the power of the checked power system. On the basis of the operation in any one of the initial charging mode, constant current mode and constant voltage mode. The battery controller 150 operates in the discharge mode based on the power output to the power system, or operates in the initial charging mode when the voltage Vb of the sensed battery 160 is less than the reference voltage Vpre of the battery 160. When the voltage Vb of the sensed battery 160 is less than the voltage source Vcc of the battery 160, the battery operates in the constant current mode, and when the voltage Vb of the sensed battery is less than the maximum voltage Vmax of the battery, the constant voltage mode. It works as

The second converter 170 provided in the wind power generator has one side connected to the DC link 140 and the other side connected to the battery controller 150, and the second converter 170 is connected to at least one of the DC link 140 and the battery controller 150. The supplied DC voltage is converted into an AC voltage and supplied to the power system (S340). In operation S340, the second converter 170 provided in the wind power generator includes an inverter that converts the DC power converted through the first converter 130 into AC power suitable for supplying the power system again. The second converter 170 allows a constant frequency and voltage to be supplied to the power system. Thereafter, the power output from the second converter 170 may be supplied to the power system by changing the voltage by the transformer. Thereafter, after step S340, the second filter 180 removes harmonics from the AC voltage output from the second converter 170 to match the power system. The second filter 180 is coupled to the secondary side of the transformer connected to the power system to filter the output value.

In FIG. 3, steps S310 to S340 are described as being sequentially executed. However, these are merely illustrative examples of the technical idea of the present embodiment. 3 may be modified and modified in various manners by changing the order described in FIG. 3 or executing one or more steps of steps S310 to S340 in parallel without departing from the essential characteristics thereof. It is not limited.

4 is a flowchart illustrating a charging and discharging method of a battery controller according to an exemplary embodiment.

The battery control unit 150 provided in the wind power generator is connected to the DC link 140 and charged or charged as electrical energy to a battery provided with a DC voltage of the DC link 140 according to the power output to the power system. Allow voltage to discharge. Hereinafter, the charging and discharging algorithm of the battery controller 150 will be described in detail with reference to FIG. 4.

The battery controller 150 forms a bidirectional converter in series. The battery controller 150 senses the voltage of the battery 160, checks the power output from the power system, and based on the sensed voltage of the battery 160 and the power of the checked power system. In step S410, it is checked whether the discharge mode is determined. If the voltage of the battery 160 sensed in step S410 is sufficient (charged voltage is more than the predetermined voltage) or the power output from the power system is sufficient (determined that it is stable compared to the preset reference voltage) battery control unit 150 ) Does not perform charging / discharging of the provided battery 160 (S412).

Meanwhile, when the voltage of the battery 160 sensed in step S410 is insufficient or the power output from the power system is insufficient, the battery controller 150 has a voltage Vb of the sensed battery 160 as the reference voltage of the battery 160. Check whether or not less than (Vpre) (S420). As a result of checking in step S420, when the voltage Vb of the sensed battery 160 is less than the reference voltage Vpre of the battery 160, the battery controller 150 operates in an initial charging mode (S422). In step S422, Iref_level is equal to Equation (1).

As a result of checking in step S420, when the voltage Vb of the sensed battery 160 is not less than the reference voltage Vpre of the battery 160, the battery controller 150 controls the voltage Vb of the sensed battery 160. It is checked whether the battery 160 is less than the voltage source Vcc (S430). As a result of checking in step S430, when the voltage Vb of the battery 160 is less than the voltage source Vcc of the battery 160, the battery controller 150 operates in the constant current mode to charge the DC voltage to the battery 160 ( S432). In step S432, Iref = Imax, which is a reference current.

As a result of checking in step S430, when the voltage Vb of the battery 160 is not less than the voltage source Vcc of the battery 160, the battery controller 150 determines that the voltage Vb of the sensed battery is the maximum voltage of the battery ( Vmax) is checked (S440). In operation S440, when the sensed voltage Vb of the battery is less than the maximum voltage Vmax of the battery, the battery controller 150 operates in the constant voltage mode to charge the DC voltage to the battery 160 (S442). In step S442, the reference voltage of the battery 160 becomes Vref = Vcv. After that, the battery controller 150 checks whether the current Ibcu of the battery controller 150 exceeds 13A (S444). As a result of checking in step S444, when the current Ibcu of the battery control unit 150 exceeds 13A, the battery control unit 150 turns off the switch (S446).

In FIG. 4, steps S410 to S446 are described as being sequentially executed. However, this is merely illustrative of the technical idea of the present embodiment, and a person skilled in the art to which the present embodiment belongs may understand the present embodiment. 4 may be modified and modified in various ways, such as by changing the order described in FIG. 4 or executing one or more steps of steps S410 to S446 in parallel without departing from the essential characteristics thereof. It is not limited.

As described above, the charging / discharging method of the battery controller according to the present embodiment described in FIG. 4 may be implemented in a program and recorded in a computer-readable recording medium. The computer-readable recording medium having recorded thereon a program for implementing the charging / discharging method of the battery control unit according to the present embodiment includes all kinds of recording devices storing data that can be read by a computer system. Examples of such computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, etc., and also implemented in the form of a carrier wave (e.g., transmission over the Internet) . The computer readable recording medium may also be distributed over a networked computer system so that computer readable code is stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the present embodiment can be easily inferred by programmers in the technical field to which the present embodiment belongs.

5 is an exemplary view showing a battery charging profile according to the present embodiment.

As shown in FIG. 5, the control method of the battery controller 150 operates in one of a pre-charging mode, a constant current mode, and a constant voltage mode according to the voltage of the battery 160. That is, as shown in Figure 5, the reference current value for each mode is different, and if the charging mode or the discharge mode is determined according to the output to the power system according to the discharge mode (Discharge Mode) or charging mode (Charge Mode) accordingly It works. In the discharge mode, the battery controller 150 discharges the battery at 1 C current, and in the charge mode, the battery controller 150 proceeds to the charge mode according to the sensed voltage of the battery 160.

The foregoing description is merely illustrative of the technical idea of the present embodiment, and various modifications and changes may be made to those skilled in the art without departing from the essential characteristics of the embodiments. Therefore, the present embodiments are to be construed as illustrative rather than restrictive, and the scope of the technical idea of the present embodiment is not limited by these embodiments. The scope of protection of the present embodiment should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

110: generator 120: first filter
130: first converter 140: DC link
150: battery control unit 160: battery
170: second converter 180: second filter
190:

Claims (7)

A generator for supplying electric power by converting kinetic energy of a blade rotating by wind into electrical energy;
A first converter converting an alternating current (AC) voltage, which is electric power input through the generator, into a direct current (DC) voltage and outputting the converted voltage;
A DC link connected to the first converter to supply the DC voltage;
A battery controller connected to the DC link and configured to discharge or charge the charged DC voltage as electrical energy to a battery provided with the DC voltage of the DC link according to power output to a power system; And
One side is connected to the DC link and the other side is connected to the battery control unit, the second converter for converting the DC voltage supplied from at least one of the DC link and the battery control unit to the AC voltage to supply to the power system
High-capacity wind turbine comprising a. The method of claim 1,
The battery control unit includes:
A bi-direction converter is formed in series, and the bi-directional converter converts the DC voltage received from the DC link into DC / DC, and then charges or charges the battery according to the sensed voltage of the battery. A high capacity wind turbine, characterized in that for discharging the DC voltage. The method of claim 1,
The battery control unit includes:
After sensing the voltage of the battery, checking the power output from the power system, based on the sensed voltage of the battery and the power of the checked power system, an initial charge mode and a constant current mode are used. Mode) and the constant voltage mode (Constant Voltage Mode), characterized in that the high-capacity wind power generation device operating in any one mode. The method of claim 3, wherein
The battery control unit includes:
When the voltage Vb of the battery operated or sensed based on the power output to the power system is less than the reference voltage Vpre of the battery, the battery operates in the initial charging mode and the voltage of the sensed battery ( When in operation Vb) is less than the voltage source (Vcc) of the battery is operated in the constant current mode, when the sensed voltage (Vb) of the battery is less than the maximum voltage (Vmax) of the battery characterized in that the operation in the constant voltage mode High capacity wind turbine. The method of claim 1,
Further comprising a control unit for controlling the first converter, the DC link and the second converter,
The control unit is a high-capacity wind power generation device, characterized in that for limiting the effective power output evaporation rate for the power output to the power system to the grid code requirements. The method of claim 1,
A first filter for removing harmonics from the AC voltage according to the type of the generator; And
A second filter for removing harmonics from the AC voltage output from the second converter so as to conform to the power system;
High capacity wind turbine comprising a further. Supplying power by converting the kinetic energy of the blades rotated by the wind into electrical energy in the generator;
Converting an alternating current (AC) voltage, which is electric power input through the generator, into a direct current (DC) voltage in a first converter;
Supplying the DC voltage connected to the first converter in a DC link;
Connecting to the DC link according to the power output from the battery control unit so that the battery having the DC voltage of the DC link is charged as electrical energy or discharged from the charged DC voltage; And
One side of the second converter is connected to the DC link and the other side is connected to the battery controller, and the DC voltage supplied from at least one of the DC link and the battery controller is converted into the AC voltage and supplied to the power system. Process
Control method of a high capacity wind power generator comprising a.

Images