JP2009281196A - Fan device for wind power generator, and wind power generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fan device for a wind power generator and the wind power generator capable of suppressing the consumption of driving electric power in cooler fans for cooling apparatuses provided in the wind power generator. <P>SOLUTION: This fan device for the wind power generator includes: the cooler fans 22, 32, 42, 52 discharging air in a casing internally storing the apparatuses at least generating electric power by rotatively driving rotary vanes to the outside of the casing through the apparatuses; and a control section 76 driving and controlling the cooler fans 22, 32, 42, 52 based on temperatures and operation statuses of the apparatuses. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fan device for a wind turbine generator and a wind turbine generator.

  Generally, the outside air temperature range in which the wind turbine generator is operated is −30 ° C. to + 40 ° C. Therefore, it is necessary to control the temperature of the internal equipment of the wind turbine generator, for example, the main bearing, the speed increaser, the generator, the transformer, the inverter, and the like within the range of the reference temperature.

In order to perform such temperature control, a heater pitch and a cooler are provided as temperature control systems in the blade pitch system, the speed increaser, the oil piping system such as the main bearing, and the cooling piping system such as the inverter, respectively. (See Patent Document 1).
The cooler is provided with a cooler fan that allows air to pass through the cooler. The heater and the cooler fan are each controlled to be turned on and off based on a set temperature (see, for example, Patent Document 1).
JP 58-065977

  However, as described above, there is a problem that the driving power of the cooler fan is excessively consumed in the method of controlling the plurality of cooler fans based on the temperature of each device to be cooled.

For example, in the control based only on the temperature in each device, it is difficult to properly control the drive of the cooler fan, and the temperature of each device has deviated from the control temperature range, and overheating or overcooling has occurred. .
In order to cool the overheated device in this way, there is a problem that a large driving power is supplied by the cooler fan and the driving power is further increased. On the other hand, the supercooled state is a state that occurs when the cooler fan continuously cools equipment that does not need to be cooled. That is, there is a problem that the cooler fan consumes drive power that is not necessary, and the drive power is excessively consumed.

  The present invention has been made to solve the above-described problem, and is a fan device for a wind power generator capable of suppressing consumption of driving power in a cooler fan that cools equipment provided in the wind power generator. And it aims at providing a wind power generator.

In order to achieve the above object, the present invention provides the following means.
A fan device for a wind turbine generator according to the present invention includes a cooler fan that exhausts air inside a housing that houses at least a device that generates power by rotating a rotary blade, and passes the device to the outside of the housing; And a controller that controls driving of the cooler fan based on the temperature of the device and the operating status of the device.

According to the present invention, the control unit can estimate the amount of heat generated in the device based on the operation status of the device. Therefore, the control unit can estimate the temperature change of the device with respect to time, that is, the temperature gradient of the device, based on the temperature of the device and the operation status.
By controlling the driving of the cooler fan based on the estimated temperature gradient of the equipment, the driving control of the cooler fan can be appropriately performed as compared with the method of controlling based on the temperature of the equipment alone. For example, the cooling stop delay by the cooler fan, that is, excessive cooling of the device is prevented. In other words, unnecessary driving of the cooler fan is prevented and consumption of driving power in the cooler fan is suppressed.
Furthermore, the cooling start delay by the cooler fan, that is, overheating of the device is prevented. In other words, the drive time of the cooler fan is shortened, and consumption of drive power by the cooler fan is suppressed.

  In the above invention, the control unit estimates the operating state of the device based on a measurement result of an anemometer that measures the wind direction and the wind speed outside the housing, and controls the driving of the cooler fan. desirable.

  According to the present invention, the control unit can grasp the operating state of the device based on the wind direction and the wind speed outside the housing, and can estimate the amount of heat generated in the device.

  In the above invention, it is preferable that the control unit estimates the operating state of the equipment based on the rotational speed of the rotor blades and the pitch angle of the rotor blades, and drives and controls the cooler fan.

  According to the present invention, the control unit can grasp the operating status of the equipment based on the rotational speed of the rotor blades and the pitch angle of the rotor blades, and can estimate the amount of heat generated in the equipment.

  In the above invention, it is desirable that the control unit estimates an operation state of the device based on an output power of the device, and drives and controls the cooler fan.

  According to the present invention, the control unit can grasp the operation status of the device based on the output power of the device, and can estimate the amount of heat generated in the device.

  In the above invention, it is preferable that a plurality of the cooler fans are provided for each of the plurality of devices, and the control unit controls driving of one cooler fan based on a driving state of another cooler fan. .

  The fan device for a wind turbine generator according to the present invention is configured such that, for each of a plurality of devices that generate power at least by rotating the rotor blades, the air in the housing that houses the devices passes through the devices and passes through the devices. A plurality of cooler fans to be discharged out of the housing, and a controller that controls the drive of the one cooler fan based on the temperature of the device and the drive state of the other cooler fan; It is characterized by.

  According to the present invention, since the drive control of one cooler fan is driven based on the drive state of another cooler fan, the cooling efficiency of the device is prevented from being lowered by the cooler fan, and the consumption of drive power in the cooler fan is reduced. It is suppressed.

  For example, if the ratio of the load of the cooler fan to the equipment, that is, the ratio of the cooling capacity of the cooler fan to the calorific value or heat capacity of the equipment is different, the driving of one cooler fan with a light load ratio may be It is controlled based on the driving state of the fan. In this way, when one cooler fan is driven, the influence of the pressure difference (negative pressure) between the inside and outside of the housing caused by the drive of the other cooler fan can be reduced. A decrease in cooling efficiency in the fan is prevented.

  Alternatively, by controlling the driving of one cooler fan with a heavy load ratio based on the driving state of the other cooler fan with a light load ratio, the casing generated by the driving of the one cooler fan with respect to the driving of the other cooler fan The influence of the pressure difference between the inside and the outside can be reduced, and a decrease in cooling efficiency in other cooler fans is prevented.

  The wind power generator of the present invention includes a rotor blade that is rotationally driven by wind, a device that generates power at least by the rotational drive of the rotor blade, a housing that houses the device, and the wind power generator device of the present invention. And a fan device.

  According to the present invention, since the fan device for a wind power generator according to the present invention is provided, the consumption of the driving power of the cooler fan in the wind power generator is suppressed.

  According to the fan apparatus and the wind power generator for a wind power generator of the present invention, the control unit estimates the temperature change of the equipment with respect to time, that is, the temperature gradient of the equipment, based on the temperature of the equipment and the operation state, and this estimation By controlling the driving of the cooler fan based on the temperature gradient of the equipment, the driving control of the cooler fan can be appropriately performed as compared with the method of controlling based on the temperature of the equipment alone. Therefore, there is an effect that it is possible to reduce the consumption of driving power in the cooler fan that cools the equipment provided in the wind turbine generator.

[First Embodiment]
Hereinafter, a wind turbine generator according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 7.
FIG. 1 is an overall view illustrating the configuration of the wind turbine generator according to this embodiment.
The wind power generator 1 performs wind power generation as shown in FIG. In the wind turbine generator 1, a support column 2 erected on the foundation B, a nacelle (casing) 3 installed at the upper end of the support column 2, and a nacelle 3 that is rotatable around a substantially horizontal axis. The rotor head 4, the head capsule 5 covering the rotor head 4, a plurality of wind turbine rotor blades (rotary blades) 6 mounted radially around the rotation axis of the rotor head 4, and the rotation of the rotor head 4 generate electric power. A power generation facility 7 to perform and a wind direction anemometer 9 to measure the wind direction and the wind speed around the wind power generator 1 are provided.

  In the present embodiment, the description is applied to an example in which three wind turbine rotor blades 6 are provided. However, the number of wind turbine rotor blades 6 is not limited to three, and the number of wind turbine rotor blades 6 may be two or three. It may be applied to more cases, and is not particularly limited.

  As shown in FIG. 1, the support column 2 has a columnar configuration extending upward from the base B (upward in FIG. 1), for example, a configuration in which a plurality of units are connected in the vertical direction. A nacelle 3 is provided at the top of the support 2. When the support column 2 is composed of a plurality of units, the nacelle 3 is installed on the unit provided at the top.

  As shown in FIG. 1, the nacelle 3 rotatably supports the rotor head 4, and houses a power generation facility 7 that generates power by rotating the rotor head 4. Further, an intake port 8 for introducing external air into the nacelle 3 is provided in front of the nacelle 3, that is, below the rotor head 4 side.

  As shown in FIG. 1, a plurality of wind turbine rotor blades 6 extending radially around the rotation axis are attached to the rotor head 4, and the periphery thereof is covered with a head capsule 5.

The rotor head 4 is provided with a pitch control section (not shown) that changes the pitch angle of the wind turbine rotor blade 6 by rotating the wind turbine rotor blade 6 about the axis of the wind turbine rotor blade 6.
Thus, when wind strikes the windmill rotor blade 6 from the direction of the rotation axis of the rotor head 4, a force is generated on the windmill rotor blade 6 to rotate the rotor head 4 about the rotation axis, and the rotor head 4 is rotationally driven.

FIG. 2 is a schematic diagram illustrating the configuration inside the nacelle of FIG.
As shown in FIG. 2, the power generation facility 7 housed in the nacelle 3 has a main bearing 11 that rotatably supports a main shaft (not shown) that transmits the rotational driving force of the rotor head 4 to the generator 14. And the speed increaser 12 that increases the rotation of the rotor head 4 and transmits it to the generator 14, and the oil cooling unit 13 that cools the oil used to lubricate the main bearing 11 and the speed increaser 12. A generator 14 that generates electric power using the rotational driving force, a transformer unit 15 that controls the voltage of the generated electricity, and a converter unit 16 that controls the frequency are provided.

The oil cooling unit 13 lubricates the main bearing 11 and the speed increaser 12 to cool the lubricating oil that has reached a high temperature.
The oil cooling unit 13 includes an oil heat exchanger (equipment) 21 that dissipates heat from the lubricating oil, an oil fan (cooler fan) 22 that causes the oil heat exchanger 21 to ventilate air, and the main bearing 11. And an oil pipe 23 for circulating lubricating oil between the speed increaser 12 and the oil heat exchanger 21.

The generator 14 includes a generator body (device) 31 that generates power, a generator fan (cooler fan) 32 that introduces air into the generator body 31, and the air introduced into the generator 14 into the nacelle 3. And a power generation duct 33 that leads to the outside.
In addition, as the generator main body 31, the generator fan 32, and the power generation duct 33, a well-known thing can be used and it does not specifically limit.

The transformer unit 15 is provided with a transformer main body (device) 41 that performs voltage conversion, an opening 42 through which air flows in the transformer main body 41, and a transformer fan (cooler fan) 43.
As the transformer main body 41, the opening, and the transformer fan 43, known ones can be used and are not particularly limited.

The converter unit 16 is arranged behind the nacelle 3 (on the right side in FIG. 2) and on the floor surface F of the nacelle 3.
The converter unit 16 is provided with a converter main body (device) 51 that performs frequency conversion, and a converter fan (cooler fan) 52 that cools the converter main body 51.

The converter main body 51 is disposed in front of the converter fan device 52 (on the left side in FIG. 2) and on the floor surface F of the nacelle 3. In other words, the converter fan device 52 is disposed in front of the converter fan 54 in the direction of the rotation axis L.
In addition, as the converter main body 51, a well-known thing can be used and it does not specifically limit.

The wind direction anemometer 9 measures the wind direction and the wind speed outside the nacelle 3. The anemometer 9 is disposed on the upper surface of the nacelle 3 at the rear (left side in FIG. 2) of the rotor blade 6 and is disposed at the tip of a bar member extending upward from the nacelle 3 (upward in FIG. 2). It is.
The wind direction and the wind speed measured by the wind direction anemometer 9 are output to the control unit 76 described later.

  Note that the anemometer 9 may be disposed on the upper surface of the nacelle 3 as described above, or may be disposed in a tower provided separately from the wind power generator 1, and is not particularly limited. . The method of arranging the anemometer 9 in a separate tower is a method suitable for application to a wind farm having a plurality of wind power generators 1.

FIG. 3 is a block diagram illustrating control of the oil fan, generator fan, transformer fan, and converter fan of FIG.
Further, as shown in FIG. 3, the wind turbine generator 1 includes an oil temperature sensor 72, a generator temperature sensor 73, a transformer temperature sensor 74, a converter temperature sensor 75, an oil fan 22, A control unit 76 that controls the generator fan 32, the transformer fan 43, and the converter fan 52 (hereinafter referred to as “oil fan 22 etc.”), the oil fan 22, and the generator fan 32. A wind power generation fan device 71 having a transformer fan 43 and a converter fan 52 is provided.

  As shown in FIGS. 2 and 3, the oil temperature sensor 72 is a sensor that measures the temperature of the oil heat exchanger 21 in the oil cooling unit 13. The temperature of the oil heat exchanger 21 measured by the oil temperature sensor 72 is output to the control unit 76.

  The generator temperature sensor 73 is a sensor that measures the temperature of the generator body 31 in the generator 14. The temperature of the generator body 31 measured by the generator temperature sensor 73 is output to the control unit 76.

  The transformer temperature sensor 74 is a sensor that measures the temperature of the transformer main body 41 in the transformer unit 15. The temperature of the transformer main body 41 measured by the transformer temperature sensor 74 is output to the control unit 76.

  The converter temperature sensor 75 is a sensor that measures the temperature of the converter main body 51 in the converter unit 16. The temperature of the converter main body 51 measured by the converter temperature sensor 75 is output to the control unit 76.

  As shown in FIGS. 2 and 3, the controller 76 is represented as an oil heat exchanger 21, a generator body 31, a transformer body 41, and a converter body 51 (hereinafter referred to as “oil heat exchanger 21 and the like”). ) And the oil fan 22 and the like are controlled based on the temperature and the wind direction and wind speed outside the nacelle 3.

  The control unit 76 includes an operation state estimation unit 77 that estimates the operation state of the wind turbine generator 1, a temperature estimation unit 78 that estimates a temperature gradient of the oil heat exchanger 21, and control signals for the oil fan 22 and the like. Is provided.

  The operating state estimating unit 77 estimates the operating rate of the oil heat exchanger 21 and the like by estimating the operating state of the wind turbine generator 1 based on the wind direction and the wind speed input from the wind direction anemometer 9. is there.

  The temperature estimating unit 78 is input from the operating rate of the oil heat exchanger 21 and the like estimated by the operating state estimating unit 77 and the oil temperature sensor 72, the generator temperature sensor 73, and the transformer temperature sensor 74. The temperature gradient in the oil heat exchanger 21 or the like is estimated based on the temperature of the oil heat exchanger 21 or the like.

  The fan control unit 79 outputs a control signal for the oil fan 22 and the like based on the temperature gradient in the oil heat exchanger 21 and the like estimated by the temperature estimation unit 78.

Next, an outline of the power generation method in the wind turbine generator 1 having the above-described configuration will be described.
In the wind power generator 1, the wind force that hits the wind turbine rotor blade 6 from the direction of the rotation axis of the rotor head 4 is converted into power that rotates the rotor head 4 around the rotation axis.

The rotation of the rotor head 4 is transmitted to the power generation equipment 7, and the power generation equipment 7 generates power that matches the power supply target, for example, AC power having a frequency of 50 Hz or 60 Hz.
Here, at least during power generation, the rotor head 4 is directed to the wind by appropriately rotating the nacelle 3 on the horizontal plane in order to effectively apply the wind force to the wind turbine rotor blades. .

Next, the control in the fan apparatus 71 for wind power generation which is the characteristic of this embodiment is demonstrated.
FIG. 4 is a flowchart illustrating control of the wind power generation fan device of FIG.
As shown in FIG. 4, the wind direction and the wind speed outside the nacelle 3 measured by the wind direction anemometer 9 are input to the control unit 76 of the wind power generation fan device 71 (step S1).
The operating state estimating unit 77 in the control unit 76 estimates the operating rate in the oil heat exchanger 21 and the like based on the input wind direction and wind speed (step S2). The estimation of the operating rate may be performed based on a data map stored in advance in the operating state estimation unit 77 or may be performed based on a calculation formula, and is not particularly limited.

Once the operating rate in the oil heat exchanger 21 or the like is estimated, the temperature estimation unit 78 then estimates a temperature gradient with respect to time in the oil heat exchanger 21 or the like (step S3).
For example, the temperature gradient in the oil heat exchanger 21 includes the temperature of the oil heat exchanger 21 input from the oil temperature sensor 72, the amount of heat generated in the oil heat exchanger 21 corresponding to the operating rate, and the oil temperature. This is based on the operating state of the fan 22. As the heat generation amount in the oil heat exchanger 21, a heat generation amount corresponding to the operation rate stored in advance in the temperature estimation unit 78 is used.
The temperature gradients in the generator main body 31, the transformer main body 41, and the converter main body 51 are also estimated by the temperature estimation unit 78 as in the case of the oil heat exchanger 21.

  The fan control unit 79 outputs a control signal for controlling the driving of the oil fan 22 and the like based on the temperature gradient in the oil heat exchanger 21 and the like estimated by the temperature estimation unit 78 (step S4).

FIG. 5 is a graph for explaining the temperature change of the generator body in FIG.
For example, the case where the drive of the generator fan 32 is controlled will be described. As shown by the solid line in FIG. 5, the fan control unit 79 is based on the temperature and the temperature gradient of the generator body 31. An ON signal for driving the generator fan 32 and an OFF signal for stopping are output so that the temperature falls within a predetermined temperature range (from T0 to T1 in FIG. 5).
By controlling in this way, as shown by the dotted line in FIG. 5, the temperature of the generator main body 31 is set to a predetermined value as compared with the case where the generator fan 32 is controlled based only on the temperature of the generator main body 31. Can be within the temperature range.

  According to the above configuration, the control unit 76 estimates the operating state of the oil heat exchanger 21 and the like based on the wind direction and the wind speed outside the nacelle 3, thereby generating the amount of heat generated in the oil heat exchanger 21 and the like. Can be estimated. Therefore, the control unit 76 further changes the temperature of the oil heat exchanger 21 with respect to time based on the temperature of the oil heat exchanger 21 measured by the oil fan 22 or the like, that is, the oil heat exchanger 21 or the like. Can be estimated.

  By controlling the drive of the oil fan 22 and the like based on the estimated temperature gradient of the oil heat exchanger 21 and the like, compared with the method of controlling based only on the temperature of the oil heat exchanger 21 and the like. Further, it is possible to appropriately perform drive control of the oil fan 22 and the like, and to prevent overconsumption of drive power in the oil fan 22 and the like for cooling the oil heat exchanger 21 and the like provided in the wind turbine generator 1. Can do.

For example, the cooling stop delay due to the oil fan 22 or the like, that is, excessive cooling of the oil heat exchanger 21 or the like is prevented. In other words, unnecessary driving of the oil fan 22 and the like is prevented, and consumption of driving power in the oil fan 22 and the like is suppressed.
Further, the cooling start delay by the oil fan 22 or the like, that is, overheating of the oil heat exchanger 21 or the like is prevented. In other words, the drive time of the oil fan 22 and the like is shortened, and consumption of drive power by the oil fan 22 and the like is suppressed.

FIG. 6 is a block diagram illustrating another control of the oil fan, the generator fan, the transformer fan, and the converter fan of FIG.
As described above, the oil fan 22 and the like may be controlled based on the wind direction anemometer 9 and the measurement results of the oil temperature sensor 72 and the like, and as shown in FIG. The oil fan 22 and the like may be controlled based on the rotational speed and the pitch angle of the wind turbine rotor blade 6 and the measurement result of the oil temperature sensor 72 and the like, and is not particularly limited.

  The rotation speed of the windmill rotor blade 6 can be measured by measuring the rotation of the rotor head 4 and the main shaft. The pitch angle of the windmill rotor blade 6 is obtained by directly measuring the pitch angle of the windmill rotor blade 6. Alternatively, the output of the pitch control unit described above may be detected and is not particularly limited.

  By doing in this way, since the driving | running state in the oil fan 22 etc. can be grasped | ascertained without using the wind direction anemometer 9, the calorie | heat amount which generate | occur | produces in the oil fan 22 etc. can be estimated.

FIG. 7 is a block diagram illustrating still another control of the oil fan, the generator fan, the transformer fan, and the converter fan of FIG.
As described above, the oil fan 22 and the like may be controlled based on the anemometer 9 and the measurement result of the oil temperature sensor 72 and the like, or as shown in FIG. The oil fan 22 or the like may be controlled based on the output power and the measurement result of the oil temperature sensor 72 or the like, and is not particularly limited.

  By doing in this way, since the driving | running state in the oil fan 22 etc. can be grasped | ascertained without using the wind direction anemometer 9, the calorie | heat amount which generate | occur | produces in the oil fan 22 etc. can be estimated.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS.
The basic configuration of the wind turbine generator of the present embodiment is the same as that of the first embodiment, but the control method for the wind turbine generator device is different from that of the first embodiment. Therefore, in this embodiment, only the control in the fan device for wind power generation will be described using FIG. 8 to FIG. 10, and description of other components will be omitted.
FIG. 8 is a block diagram for explaining the control in the wind turbine generator of the present embodiment.
In addition, about the component same as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 8, the wind power generation fan device 171 of the wind power generation apparatus 101 of the present embodiment includes an oil temperature sensor 72, a generator temperature sensor 73, a transformer temperature sensor 74, and a converter temperature. A control unit 176 that controls the sensor 75, the oil fan 22, and the like, an oil fan 22, a generator fan 32, a transformer fan 43, and a converter fan 52 are provided.

  Here, the oil fan 22 is a fan having a larger capacity than the other fans, and the generator fan 32 and the transformer fan 43 are fans having a smaller capacity than the other fans. The converter fan 52 is a fan having an intermediate capacity between the oil fan 22, the generator fan 32 and the transformer fan 43.

  As shown in FIG. 8, the control unit 176 controls the oil fan 22 and the like based on the temperature of the oil heat exchanger 21 and the wind direction and wind speed outside the nacelle 3.

  The control unit 76 includes an operation state estimation unit 77 that estimates the operation state of the wind turbine generator 1, a temperature estimation unit 78 that estimates a temperature gradient of the oil heat exchanger 21, and control signals for the oil fan 22 and the like. Is provided.

Next, the control in the fan apparatus 171 for wind power generation which is the characteristic of this embodiment is demonstrated.
The wind direction and the wind speed outside the nacelle 3 measured by the wind direction anemometer 9 are input to the control unit 176 of the wind power generation fan device 171. Thereafter, the process up to the estimation of the temperature gradient with respect to time in the oil heat exchanger 21 and the like is the same as in the first embodiment, and thus the description thereof is omitted.

The fan control unit 179 individually drives and controls each of the fans 22, 32, 42, 52 based on the estimated temperature gradient and the driving state of each of the fans 22, 32, 42, 52.
In the following description, control for the oil fan 22 having a larger capacity than other fans and the generator fan 32 having a smaller capacity than other fans will be described as an example.

FIG. 9 is a graph for explaining the temporal change in temperature in the oil heat exchanger and the control of the oil fan. FIG. 10 is a graph for explaining the temporal change in temperature in the generator body and the control of the generator fan.
In FIG. 9, Ta <b> 1 is the temperature of the oil heat exchanger 21 and the operation start temperature of the oil fan 22, and Ta <b> 2 is the stop temperature of the oil fan 22. In FIG. 10, Tb <b> 1 is the temperature of the generator main body 31 and the operation start temperature of the generator fan 32, and Tb <b> 2 is the stop temperature of the generator fan 32.

9 and 10, the temperatures of the oil heat exchanger 21 and the generator body 31 are lower than the fan operation start temperatures (Ta1, Tb1), respectively, and the stop temperature ( Since it is higher than Ta2, Tb2), the oil fan 22 and the generator fan 32 are stopped (OFF).
Thereafter, at time t11 to t12, the temperature in the oil heat exchanger 21 reaches the fan operation start temperature (Ta1), so that the oil fan 22 is driven (ON). On the other hand, since the temperature of the generator main body 31 is lower than the operation start temperature (Tb1) of the fan, the generator fan 32 remains stopped (OFF).
The temperature of the oil heat exchanger 21 is lowered by being cooled by the oil fan 22.

  At time t12 to t13, the temperature of the generator body 31 reaches the fan operation start temperature (Ta1), so that the generator fan 32 is driven (ON). On the other hand, the fan control unit 179 stops (turns off) the oil fan 22 even when the temperature is higher than the fan stop temperature (Ta2).

Therefore, the temperature of the generator main body 31 decreases because it is cooled by the generator fan 32. On the other hand, the temperature of the oil heat exchanger 21 rises because the cooling by the oil fan 22 is stopped.
Since the generator body 31 has a smaller heat capacity than the oil heat exchanger 21, the temperature of the generator body 31 decreases more quickly than the oil heat exchanger 21.

  After time t13, the temperature of the generator main body 31 becomes lower than the fan stop temperature (Tb2), so the generator fan 32 is stopped (OFF). On the other hand, since the oil heat exchanger 21 has been stopped in a state where the temperature is higher than the fan stop temperature (Ta2), the oil heat exchanger 21 is driven in response to the stop of the generator fan 32. Started (ON).

  According to the above configuration, the drive of one fan in the oil fan 22 and the like is driven and controlled based on the drive state of the other fan. A reduction in cooling efficiency is prevented, and the amount of drive power consumed by the oil fan 22 and the like is suppressed.

  When the ratio of the load of the oil fan 22 or the like to the oil heat exchanger 21 or the like, that is, the ratio of the heat generation amount of the oil heat exchanger 21 or the air blowing capacity of the oil fan 22 or the like to the heat capacity, for example, The driving of the generator fan 32 with a light load ratio is controlled based on the driving state of the oil fan 22 with a heavy load ratio. In this way, when the generator fan 32 is driven, the influence of the pressure difference (negative pressure) between the inside and outside of the nacelle 3 caused by driving the oil fan 22 can be reduced. The cooling efficiency in the fan 32 is prevented from decreasing.

  Alternatively, the drive of the oil fan 22 with respect to the drive of the generator fan 32 is generated by controlling the drive of the oil fan 22 with a heavy load ratio based on the drive state of the generator fan 32 with a light load ratio. The influence of the pressure difference between the inside and outside of the nacelle 3 can be reduced, and the cooling efficiency of the generator fan 32 is prevented from being lowered.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

1 is an overall view illustrating a configuration of a wind turbine generator according to a first embodiment of the present invention. It is a schematic diagram explaining the structure inside the nacelle of FIG. It is a block diagram explaining control of the fan for oil of FIG. 2, a generator fan, the fan for transformers, and the fan for converters. It is a flowchart explaining control of the fan apparatus for wind power generation of FIG. It is a graph explaining the temperature change of the generator main body in FIG. FIG. 4 is a block diagram illustrating another control of the oil fan, the generator fan, the transformer fan, and the converter fan of FIG. 3. FIG. 5 is a block diagram illustrating still another control of the oil fan, the generator fan, the transformer fan, and the converter fan of FIG. 3. It is a block diagram explaining the control in the wind power generator of the 2nd Embodiment of this invention. It is a graph explaining the time change of the temperature in the heat exchanger for oil, and control of the fan for oil. It is a graph explaining the time change of the temperature in a generator main body, and control of the fan for generators.

Explanation of symbols

1,101 Wind turbine generator 3 Nacelle (housing)
6 Wind turbine rotor (rotor)
9 Anemometer 21 Oil heat exchanger (equipment)
22 Oil fan (cooler fan)
31 Generator body (equipment)
32 Generator fan (cooler fan)
41 Transformer body (equipment)
43 Fan for transformer (cooler fan)
51 Converter body (equipment)
52 Fan for converter (cooler fan)
71,171 Fan unit for wind power generation 76,176 Control unit

Claims (7)

A cooler fan that exhausts the air in the housing that houses at least the device that generates power by rotating the rotor blades through the device and out of the housing;
A control unit that drives and controls the cooler fan based on the temperature of the device and the operation status of the device;
A fan device for a wind turbine generator is provided.   The said control part estimates the operating condition of the said apparatus based on the measurement result of the wind direction anemometer which measures the wind direction and the wind speed outside the said housing | casing, The drive control of the said cooler fan is characterized by the above-mentioned. The fan apparatus for wind power generators of 1.   2. The wind power generation according to claim 1, wherein the control unit estimates an operating state of the equipment based on a rotation speed of the rotor blade and a pitch angle of the rotor blade, and controls the driving of the cooler fan. Fan device for equipment.   The said control part estimates the operating condition of the said apparatus based on the output electric power of the said apparatus, and drives and controls the said cooler fan, The fan apparatus for wind power generators of Claim 1 characterized by the above-mentioned. A plurality of the cooler fans are provided for each of the plurality of devices,
The said control part controls the drive of one cooler fan based on the drive state of another cooler fan, The fan apparatus for wind power generators in any one of Claim 1 to 4 characterized by the above-mentioned. For each of a plurality of devices that generate power at least by rotating the rotor blades, a plurality of cooler fans that exhaust the air inside the housing that houses the devices inside and out of the housing through the devices;
A controller that controls driving of the one cooler fan based on the temperature of the device and the driving state of the other cooler fan; and
A fan device for a wind turbine generator is provided. A rotor blade driven to rotate by wind;
A device that generates power at least by rotating the rotor blades;
A housing that houses the device;
A fan device for a wind turbine generator according to any one of claims 1 to 6,
A wind turbine generator is provided.

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