Wind turbine generator system

Abstract

To provide a wind turbine generator system which does not require monitoring of a power generation state by a manager and can achieve stable power supply.SOLUTION: A wind turbine generator system 100 includes a building having a plurality of ventilation holes, a wind power generator 1 which generates electric power with the usage of outside air flowing through the ventilation hole from the outside of the building to the inside of the building, a battery 2 which stores electric power generated by the wind power generator 1, a ventilation system 5 which ventilates an internal space of the building, and a control unit 3 which controls operation of the wind power generator 1 and operation of the ventilation system 5. The control unit 3 monitors a residual quantity of the battery 2, and controls at least one of the operation of the wind power generator 1 and the operation of the ventilation system 5 on the basis of the residual quantity of the battery 2.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a wind power generation system capable of providing a stable power supply. [Background technology]

[0002] As a conventional wind power generation system, Patent Document 1 describes a wind turbine and a wind power generator provided opposite an air intake in a building ventilation system, and the wind turbine rotates due to the intake air flowing in through the air intake. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-138607 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the technology of Patent Document 1, the amount of air supplied through the air intake varies depending on the exhaust volume of the building's ventilation system or the openness of other openings in the building. Therefore, the method of Patent Document 1 makes it difficult to ensure a stable power supply from the wind power generation system, and requires a manager to monitor the power generation status of the wind power generation system and consider a power supply method via a switchboard. Supplying power via a switchboard requires a large construction load due to the need to run electrical wires through the building.

[0005] The present disclosure has been made in view of the above, and aims to provide a wind power generation system that does not require an administrator to monitor the power generation state and that can provide a stable power supply. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, the wind power generation system according to the present disclosure includes a building with multiple ventilation openings, a wind power generator that generates electricity using outside air flowing through the ventilation openings from the outside of the building to the inside of the building, a battery that stores the electricity generated by the wind power generator, a ventilation system that ventilates the interior space of the building, and a controller that controls the operation of the wind power generator and the ventilation system. The controller monitors the remaining charge of the battery and controls at least one of the operation of the wind power generator and the ventilation system based on the remaining charge of the battery. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to achieve an advantageous effect that a stable power supply can be achieved without the need for an administrator to monitor the power generation state. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing an example of a configuration in which a wind power generation system according to a first embodiment is applied to a building; [Figure 2] A system diagram showing the configuration of a wind power generation system according to a first embodiment. [Figure 3] FIG. 1 is a diagram showing a functional configuration of a ventilation fan provided in a ventilation system of a wind power generation system according to a first embodiment. [Figure 4] FIG. 1 is a diagram showing a functional configuration of a ventilation damper provided in a ventilation system of a wind power generation system according to a first embodiment. [Figure 5] FIG. 1 is a diagram showing a functional configuration of an external control terminal included in a wind power generation system according to a first embodiment; [Figure 6] FIG. 1 is a diagram illustrating the overall operation of the wind power generation system according to the first embodiment. [Figure 7] 1 is a flowchart illustrating a detailed procedure of control in the wind power generation system according to the first embodiment. [Figure 8] FIG. 1 is a diagram showing an example of a transition of the remaining battery charge in the wind power generation system according to the first embodiment. [Figure 9]FIG. 1 is a diagram showing a configuration in which each function of a control unit according to a first embodiment is realized by hardware. [Figure 10] FIG. 1 is a diagram showing a configuration in which each function of a control unit according to a first embodiment is realized by software. DETAILED DESCRIPTION OF THE INVENTION

[0009] A wind power generation system according to an embodiment will be described in detail below with reference to the drawings.

[0010] Embodiment 1 FIG. 1 is a diagram illustrating an example of a configuration in which a wind power generation system 100 according to the first embodiment is applied to a building 200. As shown in FIG.

[0011] As shown in Fig. 1, an outer wall 201 of a building 200 to which the wind power generation system 100 is applied is provided with an air intake 202, which is a ventilation opening for ventilating the building 200 and takes in outside air from outside the building 200 into the internal space of the building 200, which is the space to be ventilated. The air intake 202 is formed in the outer wall 201 of the building 200 as an opening that connects the internal space of the building 200 with the external space of the building 200, for example. The air intake 202 may be provided as an opening dedicated to the air intake 202, or a window provided in the outer wall 201 of the building 200 may be used. Although Fig. 1 shows one air intake 202, a plurality of air intakes 202 are provided in the building 200.

[0012] Furthermore, a wind power generator 1 is attached to the air intake 202. The wind power generator 1 generates electricity using the air passing through the air intake 202.

[0013] 1, an outer wall 201 of the building 200 is provided with a plurality of exhaust ports 203, which are ventilation openings for ventilating the building 200 and exhaust air from the internal space of the building 200, which is the space to be ventilated, to the outside of the building 200. The exhaust ports 203 are formed in the outer wall 201 of the building 200 as openings that communicate the internal space of the building 200 with the external space of the building 200, for example. An opening dedicated to the exhaust ports 203 may be provided as the exhaust ports 203, or a window provided in the outer wall 201 of the building 200 may be used.

[0014] Further, a ventilation system 5 is attached to each of the multiple exhaust ports 203. The ventilation system 5 mainly exhausts air in the internal space of the building 200 to the outside of the building 200, thereby ventilating the air in the internal space of the building 200. Furthermore, depending on the operating state of the wind power generation system 100, the ventilation system 5 supplies air from outside the building 200 to the inside of the building 200, thereby ventilating the air in the internal space of the building 200.

[0015] Fig. 2 is a system diagram showing the configuration of a wind power generation system 100 according to the first embodiment. First, the overall configuration of the wind power generation system 100 according to the first embodiment will be described. As shown in Fig. 2, the wind power generation system 100 is configured to include a wind power generator 1, a battery 2, a control unit 3, a wireless communication device 4, a ventilation system 5, and an external control terminal 6. Furthermore, an intra-building communication line, which is a dedicated communication line that allows information to be exchanged between the components of the wind power generation system 100, may be provided inside the building 200.

[0016] The wind power generator 1 generates electricity using air passing through the air intake 202. That is, the wind power generator 1 generates electricity using outside air that flows from the outside of the building 200 toward the inside of the building 200 through the air intake 202 and is supplied into the building 200. The wind power generator 1 may be attached to a ventilation opening provided in an outer wall 201 of the building 200 as shown in FIG. 1 like a general ventilation fan, or may be installed in a window frame (not shown) provided in the outer wall 201 of the building 200.

[0017] The wind power generator 1 includes a wind turbine 11, a generator 12, and a power generation control unit 13.

[0018] The wind turbine 11 rotates by air supplied from the outside of the building 200 toward the inside of the building 200, that is, by air flowing from the outside of the building 200 toward the wind turbine 11. The wind turbine 11 is installed in a ventilation opening provided in an outer wall 201 of the building 200 or in a window frame (not shown) provided in the outer wall 201 of the building 200.

[0019] The generator 12 generates electricity by the rotation of the wind turbine 11. The electricity generated by the generator 12 is transmitted to the battery 2 via a dedicated line 14. Note that the components of the wind power generator 1 are not limited to the wind turbine 11 and the generator 12. The wind power generator 1 includes components necessary to function as a wind power generator, which are included in a general wind power generator.

[0020] The power generation control unit 13 controls the entire wind power generator 1. The power generation control unit 13 controls the operation and stop of the wind turbine 11 and the generator 12 to control the power generation in the generator 12. The power generation control unit 13 also constantly monitors the wind speed, the rotation speed of the wind turbine 11, the current and voltage of the generator 12, etc., and brakes or stops the wind turbine 11 if an abnormality occurs. The power generation control unit 13 also controls the operation and stop of the wind turbine 11 and the generator 12 to control the power generation in the generator 12 based on control instructions from a battery-side control unit 31 of the control unit 3, which will be described later.

[0021] The battery 2 stores the power generated by the wind power generator 1. The power stored in the battery 2 can be used as a power source for load devices 210 used in the building 200, such as circulation fans such as electric fans, lighting, and tools. The power stored in the battery 2 can also be used as a power source for charging rechargeable load devices 210, such as automated guided vehicles (AGVs). The load devices 210 are external devices outside the battery 2. The power stored in the battery 2 can also be used as a power source for each component of the wind power generation system 100.

[0022] The battery 2 includes a power storage unit 21 and a remaining charge detection unit 22.

[0023] The power storage unit 21 is charged with and stores the electric power generated by the generator 12 of the wind power generator 1. Furthermore, the power storage unit 21 discharges the stored power to the load device 210 to supply the power to the load device 210.

[0024] The remaining amount detection unit 22 detects the remaining amount of power stored in the power storage unit 21 at predetermined intervals. The remaining amount detection unit 22 transmits the detection result, that is, information on the remaining amount of power stored in the power storage unit 21, to the battery-side control unit 31. Hereinafter, the remaining amount of power stored in the power storage unit 21 may be referred to as the remaining amount of the battery 2.

[0025] The control unit 3 controls the operation of the wind power generation system 100. The control unit 3 monitors the remaining charge of the battery 2 and controls at least one of the operation of the wind power generator 1 and the operation of the ventilation system 5 based on the remaining charge of the battery 2. The control unit 3 includes a battery-side control unit 31 and a ventilation system-side control unit 32. The battery-side control unit 31 and the ventilation system-side control unit 32 communicate control instructions via the wireless communication device 4.

[0026] The battery-side control unit 31 monitors the remaining charge of the battery 2 and issues control instructions to the ventilation system 5 and the wind power generator 1 according to the remaining charge of the battery 2. The battery-side control unit 31 transmits the control instructions to the ventilation system 5 to a battery-side wireless communication device 41, which will be described later. The battery-side control unit 31 also transmits the control instructions to the wind power generator 1 to the wind power generator 1 via a communication line installed in the building 200 or a dedicated line between the battery-side control unit 31 and the wind power generator 1.

[0027] The battery-side control unit 31 stores four thresholds—a first threshold a, a second threshold b, a third threshold c, and a fourth threshold d—that are compared with the remaining charge of the battery 2 to determine control of the wind power generator 1 and the ventilation system 5 based on the remaining charge of the battery 2. That is, the battery-side control unit 31 determines at least one of control of the wind power generator 1 and control of the ventilation system 5 by comparing the remaining charge of the battery 2 with the thresholds. The first threshold a, the second threshold b, the third threshold c, and the fourth threshold d have a magnitude relationship of "a>b>c>d." The first threshold a, the second threshold b, the third threshold c, and the fourth threshold d are predetermined by the user and set in the battery-side control unit 31. The user can set the thresholds to any values. Details of the thresholds will be described later.

[0028] The ventilation system-side control unit 32 issues a control instruction to the ventilation system 5 based on the control instruction transmitted from the battery-side control unit 31.

[0029] The wireless communication device 4 includes a battery-side wireless communication device 41 and a ventilation system-side wireless communication device 42. The battery-side wireless communication device 41 and the ventilation system-side wireless communication device 42 communicate wirelessly.

[0030] The battery-side wireless communication device 41 includes a battery-side communication unit 411 and a battery-side communication control unit 412 .

[0031] The battery-side communication unit 411 receives a control instruction to the ventilation system 5 transmitted from the battery-side control unit 31. The battery-side wireless communication device 41 transmits the received control instruction to the ventilation system 5 to the ventilation system-side wireless communication device 42 by wireless communication with the ventilation system-side wireless communication device 42.

[0032] The battery-side communication control unit 412 controls the battery-side communication unit 411 .

[0033] The ventilation system side wireless communication device 42 includes a ventilation system side communication section 421 and a ventilation system side communication control section 422 .

[0034] The ventilation system-side communication unit 421 performs wireless communication with the battery-side wireless communication device 41 and receives a control instruction to the ventilation system 5 transmitted from the battery-side wireless communication device 41. The ventilation system-side communication unit 421 transmits the received control instruction to the ventilation system 5 to the ventilation system-side control unit 32.

[0035] The ventilation system side communication control unit 422 controls the ventilation system side communication unit 421 .

[0036] The battery 2, the battery-side control unit 31, and the battery-side wireless communication device 41 are arranged, for example, inside the building 200, on the inner wall of the building 200 below the air intake 202. The battery 2, the battery-side control unit 31, and the battery-side wireless communication device 41 are connected, for example, by their respective housings (not shown). This allows the battery 2 and the battery-side control unit 31 to exchange information via a connector (not shown) or a dedicated line (not shown) that connects the housings of the battery 2 and the battery-side control unit 31. The battery-side control unit 31 and the battery-side wireless communication device 41 can also exchange information via a connector (not shown) or a dedicated line (not shown) that connects the housings of the battery-side control unit 31 and the battery-side wireless communication device 41. Note that the configurations of the battery 2, the battery-side control unit 31, and the battery-side wireless communication device 41 and the form of information exchange are not limited to this.

[0037] The ventilation system control unit 32 and the ventilation system wireless communication device 42 are arranged, for example, inside the building 200, on the inner wall of the building 200 below the exhaust port 203. The ventilation system control unit 32 and the ventilation system wireless communication device 42 are connected, for example, by their respective housings (not shown). This allows the ventilation system control unit 32 and the ventilation system wireless communication device 42 to exchange information via a connector (not shown) or a dedicated line (not shown) that connects the housings of the ventilation system control unit 32 and the ventilation system wireless communication device 42. Note that the configurations and the form of information exchange between the ventilation system control unit 32 and the ventilation system wireless communication device 42 are not limited to this.

[0038] The battery-side control unit 31 and the battery-side wireless communication device 41 may be installed near the wind power generator 1 inside the building 200 as shown in Fig. 1 , or may be installed in a location away from the wind power generator 1 and the battery 2, such as outside the building 200. When the battery-side control unit 31 is installed in a location away from the wind power generator 1 and the battery 2, for example, a cloud environment or a server installed in another area outside the building 200 can be used as the battery-side control unit 31. In this case, communication means for wireless or wired communication is also provided for communication between the battery-side control unit 31 and the wind power generator 1.

[0039] Similarly, the ventilation system control unit 32 and the ventilation system wireless communication device 42 may be installed near the ventilation system 5 inside the building 200 as shown in Fig. 1 , or may be installed in a location remote from the ventilation system 5, such as outside the building 200. When the ventilation system control unit 32 is installed in a location remote from the ventilation system 5, for example, a cloud environment or a server installed in another area outside the building 200 can be used as the ventilation system control unit 32. In this case, communication means for wireless or wired communication is also provided for communication between the ventilation system control unit 32 and the ventilation system 5.

[0040] The switching means for starting and stopping the wind power generator 1 and the ventilation fan 51 is not limited, and for example, a device such as an electromagnetic contactor that receives an external output and turns on and off can be used.

[0041] The ventilation system 5 ventilates the air in the internal space of the building 200, which is the space to be ventilated. The ventilation system 5 exhausts the air inside the building 200 from the inside of the building 200 to the outside of the building 200 through an exhaust port 203, thereby ventilating the air in the internal space of the building 200. In this case, negative pressure in the internal space of the building 200 causes outside air to naturally flow in through an intake port 202 where a wind power generator 1 is installed, thereby supplying air to the internal space of the building 200. The ventilation system 5 also ventilates the air in the internal space of the building 200 by supplying outside air from outside the building 200 through the intake port 202 from the outside of the building 200 to the inside of the building 200.

[0042] The ventilation system 5 controls the ventilation fan 51 and the ventilation damper 52 in response to the control instruction transmitted from the battery-side controller 31. That is, the ventilation system 5 varies the exhaust air volume from the exhaust port 203 in response to the control instruction transmitted from the battery-side controller 31.

[0043] In addition to changing the number of operating ventilation fans 51, other methods for varying the airflow rate of ventilation fan 51 include increasing or decreasing the airflow rate of ventilation fan 51 using an inverter (not shown) that controls ventilation fan 51 or a speed adjustment function provided in ventilation fan control unit 5103 of ventilation fan 51.

[0044] The ventilation system 5 includes a ventilation fan 51 and a ventilation damper 52.

[0045] The ventilation fan 51 includes an exhaust ventilation fan 511 and an intake ventilation fan 512.

[0046] The exhaust ventilation fans 511 are attached to a plurality of exhaust ports 203 provided in the outer wall 201 of the building 200, and are ventilation fans that exhaust air inside the building 200 to the outside of the building 200. A plurality of exhaust ventilation fans 511 are provided in the outer wall 201 of the building 200.

[0047] The air supply ventilation fans 512 are attached to a plurality of air intake ports 202 provided on the outer wall 201 of the building 200, and are ventilation fans that supply air from outside the building 200 to the inside of the building 200. A plurality of air supply ventilation fans 512 are provided on the outer wall 201 of the building 200.

[0048] The exhaust ventilation fan 511 and the intake ventilation fan 512, which are ventilation fans 51, have the following common configuration.

[0049] 3 is a diagram showing the functional configuration of the ventilation fan 51 included in the ventilation system 5 of the wind power generation system 100 according to the first embodiment. The ventilation fan 51 includes a blower 5101, a ventilation fan storage unit 5102, and a ventilation fan control unit 5103.

[0050] The blower 5101 is composed of an electric motor (not shown) and an impeller connected to the drive shaft of the electric motor. The impeller forms an airflow by rotating when driven by the electric motor. The electric motor drives the impeller. The air volume of the blower 5101, i.e., the air volume of the ventilation fan 51, is controlled by controlling the rotation speed of the electric motor.

[0051] The ventilation fan storage unit 5102 stores various information used for operating the ventilation fan 51.

[0052] The ventilation fan control unit 5103 controls the operation of the ventilation fan 51. That is, the ventilation fan control unit 5103 controls the operation of the blower 5101 by controlling the driving of the electric motor. The ventilation fan control unit 5103 also switches between operating and stopping the ventilation fan 51, and the ventilation operation mode and air volume for ventilation operation, in accordance with instructions input from outside the ventilation fan 51. The ventilation fan control unit 5103 receives control instructions from outside the ventilation fan 51 via an in-building communication line or a dedicated line between the ventilation system-side control unit 32 and the ventilation fan control unit 5103. The ventilation fan control unit 5103 controls the air volume of the blower 5101, i.e., the air volume of the ventilation fan 51, by adjusting the output of the electric motor to control the rotation speed of the electric motor.

[0053] Ventilation damper 52 is provided at a ventilation opening provided in outer wall 201 of building 200, and changes the opening ratio of the ventilation opening to change the volume of air passing through the ventilation opening. Ventilation damper 52 is provided at exhaust opening 203 to which exhaust ventilation fan 511 is attached, at intake opening 202 to which supply ventilation fan 512 is attached, and at a ventilation opening for natural air intake (not shown).

[0054] 4 is a diagram showing the functional configuration of the ventilation damper 52 included in the ventilation system 5 of the wind power generation system 100 according to the first embodiment. The ventilation damper 52 includes an airflow switching damper blade 521, a drive motor 522, and a damper control unit 523.

[0055] The air volume switching damper blade 521 changes the opening ratio of the ventilation opening to change the volume of air passing through the ventilation opening.

[0056] The drive motor 522 drives the air volume switching damper blade 521 to rotate, thereby changing the position of the air volume switching damper blade 521 .

[0057] The damper control unit 523 controls the drive motor 522 based on control instructions received from the ventilation system side control unit 32 via an in-building communication line or a dedicated line between the ventilation system side control unit 32 and the damper control unit 523, and controls the position of the air volume switching damper blades 521.

[0058] The external control terminal 6 is an external control device that allows a user to remotely control the operation of the ventilation system 5.

[0059] Fig. 5 is a diagram showing the functional configuration of the external control terminal 6 included in the wind power generation system 100 according to the first embodiment. As shown in Fig. 5, the external control terminal 6 includes an operation unit 61, a display unit 62, a terminal communication unit 63, a terminal storage unit 64, and a terminal control unit 65. Information can be exchanged between the components of the external control terminal 6 shown in Fig. 5.

[0060] The operation unit 61 is a functional unit that is operated by the user when controlling or setting the ventilation system 5. The user uses the operation unit 61 to perform various operations on the operation screen of the ventilation system 5 displayed on the display unit 62. The operation unit 61 accepts information input by the user and transmits operation information corresponding to the information to the terminal control unit 65.

[0061] The display unit 62 displays information about the operation of the operation unit 61 and information about the operation of the ventilation system 5.

[0062] The terminal communication unit 63 communicates with devices external to the external control terminal 6. The terminal communication unit 63 transmits control instructions for the ventilation system 5 to the ventilation system side control unit 32.

[0063] The terminal storage unit 64 is a storage unit that stores information used in the ventilation system 5.

[0064] The terminal control unit 65 is a control unit that controls the overall processing of the external control terminal 6. The terminal control unit 65 transmits operation information transmitted from the operation unit 61 to the ventilation system side control unit 32 as a control instruction.

[0065] The ventilation system-side control unit 32 can also receive control instructions other than those transmitted from the battery-side control unit 31. For example, the ventilation system-side control unit 32 can perform manual control of individual ventilation fans 51 input by an operator via the external control terminal 6, on / off control when a detection value acquired from a sensor such as a carbon dioxide (CO2) sensor (not shown) installed inside the building 200 or a temperature sensor (not shown) installed inside the building 200 exceeds a predetermined threshold, scheduled operation control that operates according to a predetermined schedule, and operation control based on acquired data acquired from outside the ventilation system-side control unit 32. When these control instructions, including the control instruction transmitted from the battery-side control unit 31, conflict, the ventilation system-side control unit 32 judges and transmits to the ventilation system 5 a control instruction determined based on a predetermined priority of each control instruction.

[0066] A switchboard 7 is also disposed inside the building 200. The user can supply power supplied from an external commercial power source to the load devices 210 inside the building 200 via the switchboard 7. The user can also supply power supplied from an external commercial power source to each component of the wind power generation system 100 via the switchboard 7.

[0067] 6 is a diagram illustrating the overall operation of the wind power generation system 100 according to the first embodiment. First, when a start switch (not shown) of the wind power generation system 100 is turned on, the switches of the wind power generator 1, the battery 2, the control unit 3, the wireless communication device 4, and the ventilation system 5 are turned on, and the wind power generation system 100 starts up. The start switch is provided in, for example, the external control terminal 6.

[0068] When the exhaust ventilation fan 511 of the ventilation system 5 is switched on, it starts operating at a predetermined wind power. Of the multiple exhaust ventilation fans 511, the exhaust ventilation fan 511 that starts operating when the ventilation system 5 is started is determined in advance. Information about the exhaust ventilation fan 511 that starts operating when the ventilation system 5 is started is determined in advance and stored in the ventilation system-side control unit 32. The ventilation system-side control unit 32 controls the start of operation of the exhaust ventilation fan 511 that starts operating when the ventilation system 5 is started.

[0069] The exhaust ventilation fan 511 exhausts the air in the space inside the building 200 to the outside of the building 200 through the exhaust port 203. As a result, the inside of the building 200 is in a negative pressure state, and the outside air outside the building 200 naturally flows into the inside of the building 200 through the intake port 202.

[0070] The outside air flowing into the building 200 from the air intake 202 hits the wind turbine 11 of the wind power generator 1, causing the wind turbine 11 to rotate. Due to the rotation of the wind turbine 11, the outside air that has flowed into the building 200 from the air intake 202 is diffused inside the building 200, making it easier for fresh outside air to spread throughout the building 200 compared to when the wind turbine 11 is not provided. Furthermore, the outside air introduced from outside the building 200 is diffused efficiently by the rotation of the wind turbine 11.

[0071] Electric power generated by a generator 12 due to the rotation of the wind turbine 11 is supplied to the battery 2 via a dedicated line 14 .

[0072] In the battery 2, the power storage unit 21 charges and stores the power supplied from the generator 12 of the wind power generator 1. The power storage unit 21 also feeds the stored power to the load device 210, supplying power to the load device 210. In the battery 2, the remaining amount detection unit 22 detects the remaining amount of the battery 2, i.e., the remaining amount of power stored in the power storage unit 21, at predetermined intervals. The remaining amount detection unit 22 transmits information on the remaining amount of the battery 2, which is the detection result, to the battery-side control unit 31.

[0073] The battery-side control unit 31 monitors the remaining charge of the battery 2 at predetermined intervals. That is, the battery-side control unit 31 monitors the information on the remaining charge of the battery 2 acquired from the remaining charge detection unit 22.

[0074] The battery-side control unit 31 issues control instructions to the ventilation system 5 and to the wind power generator 1 according to the remaining charge of the battery 2. When the remaining charge of the battery 2 satisfies a predetermined determination condition, the battery-side control unit 31 performs predetermined control as a response to the case where the determination condition is satisfied. The battery-side control unit 31 transmits control instructions to the ventilation system 5 to the battery-side wireless communication device 41 and instructs it to transmit the control instructions to the ventilation system-side wireless communication device 42. The battery-side control unit 31 also transmits control instructions to the wind power generator 1, such as a power generation instruction or a power generation stop instruction, to the wind power generator 1 via an in-building communication line or a dedicated line between the battery-side control unit 31 and the wind power generator 1. When the wind power generator 1 receives a control instruction to the wind power generator 1 transmitted from the battery-side control unit 31, it operates based on the control instruction.

[0075] When the battery-side wireless communication device 41 receives a control instruction for the ventilation system 5 from the battery-side control unit 31, it communicates wirelessly with the ventilation system-side wireless communication device 42 based on the instruction from the battery-side control unit 31 and transmits the control instruction to the ventilation system-side wireless communication device 42.

[0076] When the ventilation system side wireless communication device 42 receives a control instruction to the ventilation system 5 from the battery side wireless communication device 41, it transmits the control instruction to the ventilation system side control unit 32.

[0077] When the ventilation system-side control unit 32 receives a control instruction for the ventilation system 5, it issues a control instruction to the ventilation system 5 based on the control instruction. Furthermore, when the ventilation system-side control unit 32 has received other control instructions for the ventilation system 5, it issues a control instruction to the ventilation system 5 based on the control instruction for the ventilation system 5 received from the ventilation system-side wireless communication device 42 and the other control instructions. The other control instructions are control instructions for the ventilation system 5 sent from the external control terminal 6 to the ventilation system-side control unit 32.

[0078] When the ventilation system 5 receives a control instruction transmitted from the ventilation system control unit 32, the ventilation fan 51 or the ventilation damper 52 performs an operation based on the control instruction. The operation based on the control instruction includes starting operation, changing operating conditions, and the like.

[0079] Fig. 7 is a flowchart illustrating a detailed procedure of control in the wind power generation system 100 according to the first embodiment. Fig. 8 is a diagram illustrating an example of the transition of the remaining charge of the battery 2 in the wind power generation system 100 according to the first embodiment.

[0080] In step S110, the wind power generation system 100 is started up and power generation by the wind power generator 1 is initiated. Then, the process proceeds to step S120.

[0081] In step S120, the remaining charge of the battery 2 is checked. Specifically, the battery-side control unit 31 monitors the remaining charge of the battery 2 at a predetermined cycle to check the remaining charge of the battery 2. The remaining charge detection unit 22 of the battery 2 detects the remaining charge of the battery 2 at a predetermined cycle and transmits the detected remaining charge information of the battery 2 to the battery-side control unit 31. The battery-side control unit 31 checks the remaining charge of the battery 2 based on the remaining charge information of the battery 2 acquired from the remaining charge detection unit 22. Then, the process proceeds to step S130.

[0082] In step S130, it is determined whether the remaining charge of the battery 2 is equal to or greater than the first threshold value a. Specifically, the battery-side control unit 31 determines whether the remaining charge of the battery 2 is equal to or greater than the first threshold value a.

[0083] If it is determined that the remaining charge of the battery 2 is equal to or greater than the first threshold a, the result in step S130 is Yes, and the process proceeds to step S140. If it is determined that the remaining charge of the battery 2 is less than the first threshold a, the result in step S130 is No, and the process proceeds to step S180.

[0084] In step S140, the wind power generator 1 is stopped. Specifically, the battery-side control unit 31 performs control to stop the wind power generator 1, thereby stopping the wind power generator 1. That is, the battery-side control unit 31 performs control to stop the power generation of the wind power generator 1. When the remaining charge of the battery 2 is equal to or greater than the first threshold value a, this means that a sufficient amount of power has been stored in the power storage unit 21 of the battery 2, and there is no need to charge the power storage unit 21. For this reason, when the remaining charge of the battery 2 is equal to or greater than the first threshold value a, the battery-side control unit 31 performs control to stop the power generation of the wind power generator 1 in order to prevent excessive charging of the power storage unit 21 of the battery 2.

[0085] The battery-side control unit 31 transmits a power generation stop instruction, which is an instruction to stop the wind power generator 1 and stop power generation, to the power generation control unit 13 of the wind power generator 1. When the power generation stop instruction transmitted from the battery-side control unit 31 is received, the power generation control unit 13 stops the wind turbine 11 and the generator 12 based on the power generation stop instruction. Then, the process proceeds to step S150.

[0086] The first threshold value a is a reference value of the remaining charge of the battery 2 that the battery-side control unit 31 compares with the remaining charge of the battery 2 to determine whether to issue an instruction to stop power generation of the wind power generator 1 or not.

[0087] In step S150, similarly to step S120, the remaining charge of the battery 2 is checked. That is, the battery-side control unit 31 monitors the remaining charge of the battery 2 at predetermined intervals to check the remaining charge of the battery 2. Thereafter, the process proceeds to step S160.

[0088] In step S160, it is determined whether the remaining charge of the battery 2 is less than the second threshold value b. Specifically, the battery-side control unit 31 determines whether the remaining charge of the battery 2 is less than the second threshold value b. If the remaining charge of the battery 2 is less than the second threshold value b, it means that the remaining charge of the battery 2 has decreased after the wind power generator 1 was stopped, and it is necessary to increase the remaining charge of the battery 2 to the first threshold value a or more.

[0089] The second threshold value b is a reference value of the remaining charge of the battery 2 that the battery side control unit 31 compares with the remaining charge of the battery 2 to determine whether to cancel the instruction to stop power generation of the wind power generator 1, i.e., whether to issue an instruction to restart the wind power generator 1.

[0090] If it is determined that the remaining charge of the battery 2 is less than the second threshold b, the result in step S160 is Yes, and the process proceeds to step S170. If it is determined that the remaining charge of the battery 2 is equal to or greater than the second threshold b, the result in step S160 is No, and the process returns to step S150.

[0091] In step S170, the wind power generator 1 is restarted. Specifically, when the remaining charge of the battery 2 is less than the second threshold b while the wind power generator 1 is stopped, the battery-side control unit 31 controls the wind power generator 1 to be restarted. The battery-side control unit 31 transmits a restart instruction to the power generation control unit 13 of the wind power generator 1, which is an instruction to cancel the instruction to stop power generation of the wind power generator 1 and restart the wind power generator 1 to resume power generation. The restart instruction is a power generation instruction to instruct the wind power generator 1 to generate power. When the power generation control unit 13 receives the restart instruction transmitted from the battery-side control unit 31, it cancels the stopped state of the wind turbine 11 and the generator 12 based on the restart instruction. Then, the process returns to step S120.

[0092] 8 is the period from when it is determined that the remaining charge of the battery 2 is equal to or greater than the first threshold value a to when it is determined that the remaining charge of the battery 2 is less than the second threshold value b. During the period T2, the wind power generator 1 is stopped, and the remaining charge of the battery 2 gradually decreases due to the supply of power to the load device 210.

[0093] In step S180, it is determined whether the remaining charge of the battery 2 is less than the fourth threshold value d. Specifically, the battery-side control unit 31 determines whether the remaining charge of the battery 2 is less than the fourth threshold value d. If the remaining charge of the battery 2 is less than the fourth threshold value d, the remaining charge of the battery 2 is running low, and it is necessary to increase the power generation amount of the wind power generator 1 and increase the remaining charge of the battery 2 immediately.

[0094] The fourth threshold value d is a reference value that the battery-side control unit 31 compares with the remaining charge of the battery 2 to determine whether or not to increase the amount of power generated by the wind power generator 1 to increase the remaining charge of the battery 2.

[0095] If it is determined that the remaining charge of the battery 2 is less than the fourth threshold d, the result in step S180 is Yes, and the process proceeds to step S190. If it is determined that the remaining charge of the battery 2 is equal to or greater than the fourth threshold d, the result in step S180 is No, and the process returns to step S120.

[0096] In step S190, in order to increase the amount of power generated by the wind power generator 1, an instruction is given to the ventilation system 5 to increase the amount of ventilation to the wind turbine 11 of the wind power generator 1. Specifically, in order to increase the amount of power generated by the wind power generator 1, the battery-side control unit 31 instructs the ventilation system 5 to increase the amount of ventilation to the wind turbine 11 of the wind power generator 1. The ventilation system-side control unit 32 transmits a ventilation-rate increase instruction to the ventilation system 5 to instruct it to increase the amount of ventilation to the wind turbine 11 of the wind power generator 1. That is, the battery-side control unit 31 transmits the ventilation-rate increase instruction to the ventilation system-side control unit 32 via the battery-side wireless communication device 41 and the ventilation system-side wireless communication device 42. Upon receiving the ventilation-rate increase instruction, the ventilation system-side control unit 32 transmits the ventilation-rate increase instruction to the ventilation system 5.

[0097] One method for increasing the amount of ventilation to wind turbine 11 is to concentrate the intake air so that as much air as possible from the outside of building 200 to the inside of building 200 passes through intake port 202 where wind power generator 1 is installed. Methods for concentrating the intake air at intake port 202 where wind power generator 1 is installed include, for example, increasing the air volume of exhaust ventilation fan 511 while reducing the air volume of intake ventilation fan 512, and further closing ventilation damper 52 of the ventilation port for natural air intake. When the amount of air passing through intake port 202 where wind power generator 1 is installed increases, the rotation speed of wind turbine 11 of wind power generator 1 also increases, and the amount of power generated by wind power generator 1 increases.

[0098] Information on a method for increasing the amount of ventilation to the wind turbine 11, that is, information on specific control content of the instruction to increase the amount of ventilation, is determined in advance and stored in the battery-side control unit 31.

[0099] When the ventilation system 5 receives the instruction to increase the ventilation rate transmitted from the ventilation system control unit 32, it controls at least one of the exhaust ventilation fan 511, the intake ventilation fan 512, and the ventilation damper 52 based on the instruction to increase the ventilation rate, thereby increasing the ventilation rate to the wind turbine 11 of the wind power generator 1. Then, the process proceeds to step S200.

[0100] In step S200, similarly to step S120, the remaining charge of the battery 2 is checked. Specifically, the battery-side control unit 31 monitors the remaining charge of the battery 2 at predetermined intervals to check the remaining charge of the battery 2. Then, the process proceeds to step S210.

[0101] In step S210, it is determined whether the remaining charge of the battery 2 is equal to or greater than the third threshold c. Specifically, the battery-side control unit 31 determines whether the remaining charge of the battery 2 is equal to or greater than the third threshold c. If the remaining charge of the battery 2 is equal to or greater than the third threshold c, this means that the remaining charge of the battery 2 has returned to a state where there is no problem in returning the amount of ventilation to the wind turbine 11 to its normal state.

[0102] The third threshold value c is a reference value that the battery-side control unit 31 compares with the remaining charge of the battery 2 to determine whether or not to cancel the instruction to increase the amount of ventilation to the wind turbine 11 of the wind power generator 1.

[0103] If it is determined that the remaining charge of the battery 2 is equal to or greater than the third threshold c, the result in step S210 is Yes, and the process proceeds to step S220. If it is determined that the remaining charge of the battery 2 is less than the third threshold c, the result in step S210 is No, and the process returns to step S200.

[0104] In step S220, the instruction to increase the ventilation rate to the wind turbine 11 of the wind power generator 1 is canceled. Specifically, the battery-side control unit 31 cancels the instruction to increase the ventilation rate to the wind turbine 11 of the wind power generator 1 to the ventilation system 5. The battery-side control unit 31 transmits a cancellation instruction to the ventilation system 5 to instruct the cancellation of the instruction to increase the ventilation rate. That is, the battery-side control unit 31 transmits the cancellation instruction to the ventilation system-side control unit 32 via the battery-side wireless communication device 41 and the ventilation system-side wireless communication device 42. Upon receiving the cancellation instruction, the ventilation system-side control unit 32 transmits the cancellation instruction to the ventilation system 5.

[0105] When the ventilation system 5 receives the cancellation instruction transmitted from the ventilation system control unit 32, it returns the control that it has been performing on at least one of the exhaust ventilation fan 511, the intake ventilation fan 512, and the ventilation damper 52 based on the instruction to increase the ventilation rate to a normal state, i.e., the state before receiving the instruction to increase the ventilation rate, based on the cancellation instruction, and then returns to step S120.

[0106] 8 is the period from when it is determined that the remaining charge of the battery 2 is less than the fourth threshold value d to when it is determined that the remaining charge of the battery 2 is equal to or greater than the third threshold value c. During the period T1, in order to increase the amount of power generated by the wind power generator 1, a ventilation volume increase instruction is issued to the ventilation system 5 to instruct the ventilation system 5 to increase the ventilation volume to the wind turbine 11 of the wind power generator 1.

[0107] According to the above-mentioned embodiment 1, a wind power generation system is realized which includes a building in which multiple ventilation openings are formed, a wind power generator which generates electricity using outside air flowing through the ventilation openings from the outside of the building toward the inside of the building, a battery which stores the electricity generated by the wind power generator, a ventilation system which ventilates the interior space of the building, and a control unit which controls the operation of the wind power generator and the operation of the ventilation system, wherein the control unit monitors the remaining battery charge and controls at least one of the operation of the wind power generator and the operation of the ventilation system based on the remaining battery charge.

[0108] The wind power generation system 100 according to the first embodiment described above includes a building in which a plurality of ventilation openings are formed, a wind power generator 1 that is installed at an air intake 202 of the building and generates electricity using outside air that flows through the air intake 202 from the outside of the building 200 toward the inside of the building 200, a battery 2 that stores the electricity generated by the wind power generator 1, a ventilation system 5 that ventilates the interior space of the building 200, and a control unit 3 that controls the operation of the wind power generator 1 and the operation of the ventilation system 5. The wind power generator 1 also includes a wind turbine 11 and a generator 12 that generates electricity by the rotation of the wind turbine 11.

[0109] In the wind power generation system 100 configured in this manner, the control unit 3 automatically monitors the remaining charge of the battery 2 and automatically controls at least one of the operation of the wind power generator 1 and the operation of the ventilation system 5 based on the remaining charge of the battery 2, thereby increasing the amount of ventilation to the wind turbine 11. As a result, even if the remaining charge of the battery 2 decreases, the wind power generation system 100 can increase the amount of power generated by the wind power generator 1 and enable stable charging of the battery 2, thereby enabling a stable supply of power to the load device 210. In other words, the wind power generation system 100 does not require an administrator to monitor the power generation state of the wind power generator 1 and the charging state of the battery 2.

[0110] Furthermore, when the remaining charge of the battery 2 is equal to or greater than the first threshold value a, the control unit 3 performs control to stop the wind power generator 1. This makes it possible to prevent the wind power generation system 100 from overcharging the power storage unit 21 of the battery 2.

[0111] Furthermore, when the remaining charge of the battery 2 falls below the second threshold b while the wind power generator 1 is stopped, the control unit 3 performs control to restart the wind power generator 1. This makes it possible for the wind power generation system 100 to maintain a high level of stored power in the battery 2, and to provide a stable power supply to the load device 210.

[0112] Furthermore, when the remaining charge of the battery 2 falls below the fourth threshold value d, the control unit 3 performs control to increase the amount of ventilation to the wind turbine 11 of the wind power generator 1. This makes it possible in the wind power generation system 100 to increase the amount of power generated by the wind power generator 1 and quickly increase the remaining charge of the battery 2, thereby enabling a stable supply of power to the load device 210.

[0113] Furthermore, when the remaining charge of the battery 2 is equal to or greater than the third threshold c while the amount of power generated by the wind power generator 1 is being increased by increasing the amount of airflow to the wind turbine 11 of the wind power generator 1, the control unit 3 performs control to cancel the increase in the amount of airflow to the wind power generator 1. This allows the battery 2 to be charged by the power generation of the wind power generator 1 in a normal state without increasing the load on the wind power generator 1 and the ventilation system 5, and makes it possible to provide a stable power supply to the load device 210.

[0114] Therefore, according to the wind power generation system 100 of the first embodiment, it is not necessary for the administrator to monitor the power generation status of the wind power generator 1 and the charging status of the battery 2, and the wind power generator 1 and the ventilation system 5 are linked together to control the amount of ventilation to the wind turbine 11, for example, by increasing the amount of ventilation, thereby achieving the effect of enabling a stable supply of power.

[0115] Next, the hardware configuration of each of the control units 80 according to the first embodiment will be described. The control unit 80 according to the first embodiment corresponds to each of the power generation control unit 13 of the wind power generator 1, the battery-side control unit 31, the ventilation system-side control unit 32, the battery-side communication control unit 412 of the battery-side wireless communication device 41, the ventilation system-side communication control unit 422 of the ventilation system-side wireless communication device 42, the ventilation fan control unit 5103 of the ventilation fan 51, the damper control unit 523 of the ventilation damper 52, and the terminal control unit 65 of the external control terminal 6. Each function of the control unit 80 according to the first embodiment is realized by a processing circuit. The processing circuit may be dedicated hardware or a processing unit that executes a program stored in a storage device.

[0116] When the processing circuit is dedicated hardware, the processing circuit may be a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an application specific integrated circuit, a field programmable gate array, or a combination thereof. Figure 9 is a diagram showing a configuration in which each function of the control unit 80 according to the first embodiment is realized by hardware. The processing circuit 81 incorporates a logic circuit 81a that realizes the functions of the control unit 80.

[0117] When the processing circuit 81 is a processing device, the functions of the control unit 80 are realized by software, firmware, or a combination of software and firmware.

[0118] FIG. 10 is a diagram illustrating a configuration in which each function of the control unit 80 according to the first embodiment is implemented by software. The processing circuit 81 includes a processor 811 that executes a program 81b, a random access memory 812 that the processor 811 uses as a work area, and a storage device 813 that stores the program 81b. The processor 811 loads the program 81b stored in the storage device 813 onto the random access memory 812 and executes it, thereby realizing the functions of the control unit 80. The software or firmware is written in a programming language and stored in the storage device 813. The processor 811 may be, but is not limited to, a central processing unit. The storage device 813 may be a semiconductor memory such as a random access memory (RAM), a read-only memory (ROM), a flash memory, an erasable programmable read-only memory (EPROM), or an electrically erasable programmable read-only memory (EEPROM). The semiconductor memory may be a non-volatile memory or a volatile memory. In addition to semiconductor memory, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, or a DVD (Digital Versatile Disc) can be applied to the storage device 813. The processor 811 may output data such as a calculation result to the storage device 813 for storage, or may store the data in an auxiliary storage device (not shown) via the random access memory 812. By integrating the processor 811, the random access memory 812, and the storage device 813 on one chip, the functions of the control unit 80 can be realized by a microcomputer.

[0119] The processing circuit 81 realizes the functions of the control unit 80 by reading and executing the program 81b stored in the storage device 813. It can also be said that the program 81b causes the computer to execute the procedures and methods for realizing the functions of the control unit 80.

[0120] The processing circuit 81 may be configured so that some of the functions of the control unit 80 are realized by dedicated hardware, and some of the functions of the control unit 80 are realized by software or firmware.

[0121] In this way, the processing circuitry 81 can realize each of the above-described functions by hardware, software, firmware, or a combination of these.

[0122] The configurations shown in the above embodiments are merely examples, and may be combined with other known technologies, and parts of the configurations may be omitted or modified without departing from the spirit of the invention.

[0123] Various aspects of the present disclosure are summarized below as appendices.

[0124] (Appendix 1) A building having a plurality of ventilation openings; a wind power generator that generates electricity using outside air flowing through the ventilation opening from the outside of the building toward the inside of the building; a battery that stores the electricity generated by the wind power generator; a ventilation system for ventilating the interior space of the building; a control unit that controls the operation of the wind power generator and the operation of the ventilation system; Equipped with the control unit monitors the remaining charge of the battery and controls at least one of the operation of the wind power generator and the operation of the ventilation system based on the remaining charge of the battery; A wind power generation system characterized by: (Appendix 2) the control unit issues a power generation instruction to the wind power generator to generate power or a power generation stop instruction to the wind power generator to stop generating power, based on the remaining amount of the battery; 2. The wind power generation system according to claim 1, (Appendix 3) the control unit determines at least one of control over the wind power generator and control over the ventilation system by comparing the remaining charge of the battery with a first threshold value a, a second threshold value b, a third threshold value c, and a fourth threshold value d, which are predetermined to have a magnitude relationship of first threshold value a>second threshold value b>third threshold value c>fourth threshold value d; 3. The wind power generation system according to claim 1 or 2, (Appendix 4) the control unit performs control to stop the wind power generator when the remaining charge of the battery is equal to or greater than the first threshold value a; 4. The wind power generation system according to claim 3, (Appendix 5) the control unit performs control to restart the wind power generator when the remaining charge of the battery is less than the second threshold value b while the wind power generator is stopped; 5. The wind power generation system according to claim 4, (Appendix 6) the control unit performs control to increase an amount of ventilation to the wind power generator when the remaining charge of the battery is less than the fourth threshold value d; 4. The wind power generation system according to claim 3, (Appendix 7) the control unit performs control to cancel the increase in the amount of ventilation to the wind power generator when the remaining charge of the battery is equal to or greater than the third threshold value c in a state in which the amount of ventilation to the wind power generator has been increased; 7. The wind power generation system according to claim 6, (Appendix 8) The wind power generator includes a wind turbine and a generator that generates electricity by rotation of the wind turbine, The wind turbine is installed at the ventilation opening; 8. The wind power generation system according to claim 1, wherein the wind power generation system comprises: (Appendix 9) the ventilation system includes an exhaust ventilation fan, an intake ventilation fan, and a ventilation damper that changes the opening ratio of the ventilation opening; 9. The wind power generation system according to any one of claims 1 to 8, [Explanation of symbols]

[0125] 1 wind power generator, 2 battery, 3 control unit, 4 wireless communication device, 5 ventilation system, 6 external control terminal, 7 distribution board, 11 wind turbine, 12 generator, 13 power generation control unit, 14 dedicated line, 21 power storage unit, 22 remaining capacity detection unit, 31 battery side control unit, 32 ventilation system side control unit, 41 battery side wireless communication device, 42 ventilation system side wireless communication device, 51 ventilation fan, 52 ventilation damper, 61 operation unit, 62 display unit, 63 terminal communication unit, 64 terminal memory unit, 65 terminal control unit, 80 control unit, 81 processing circuit, 81a logic circuit, 81b program, 100 wind power generation system, 200 building, 201 exterior wall, 202 air intake, 203 air exhaust, 210 load equipment, 411 battery side communication unit, 412 battery side communication control unit, 421 Ventilation system side communication unit, 422 ventilation system side communication control unit, 511 exhaust ventilation fan, 512 intake ventilation fan, 521 air volume switching damper blade, 522 drive motor, 523 damper control unit, 811 processor, 812 random access memory, 813 storage device, 5101 blower, 5102 ventilation fan memory unit, 5103 ventilation fan control unit.

Claims

1. A building having a plurality of ventilation openings; a wind power generator that generates electricity using outside air flowing through the ventilation opening from the outside of the building toward the inside of the building; a battery that stores the electricity generated by the wind power generator; a ventilation system for ventilating the interior space of the building; a control unit that controls the operation of the wind power generator and the operation of the ventilation system; Equipped with the control unit monitors the remaining charge of the battery and controls at least one of the operation of the wind power generator and the operation of the ventilation system based on the remaining charge of the battery; A wind power generation system characterized by:

2. the control unit issues a power generation instruction to the wind power generator to generate power or a power generation stop instruction to the wind power generator to stop generating power, based on the remaining amount of the battery; The wind power generation system according to claim 1 .

3. the control unit determines at least one of control over the wind power generator and control over the ventilation system by comparing the remaining charge of the battery with a first threshold value a, a second threshold value b, a third threshold value c, and a fourth threshold value d, which are predetermined to have a magnitude relationship of first threshold value a>second threshold value b>third threshold value c>fth threshold value d; The wind power generation system according to claim 1 .

4. the control unit performs control to stop the wind power generator when the remaining charge of the battery is equal to or greater than the first threshold value a; 4. The wind power generation system according to claim 3,

5. the control unit performs control to restart the wind power generator when the remaining charge of the battery is less than the second threshold value b while the wind power generator is stopped; 5. The wind power generation system according to claim 4,

6. the control unit performs control to increase an amount of ventilation to the wind power generator when the remaining charge of the battery is less than the fourth threshold value d; 4. The wind power generation system according to claim 3,

7. the control unit performs control to cancel the increase in the amount of ventilation to the wind power generator when the remaining charge of the battery is equal to or greater than the third threshold value c in a state in which the amount of ventilation to the wind power generator has been increased; 7. The wind power generation system according to claim 6,

8. The wind power generator includes a wind turbine and a generator that generates electricity by rotation of the wind turbine, The wind turbine is installed at the ventilation opening; The wind power generation system according to claim 1 .

9. the ventilation system includes an exhaust ventilation fan, an intake ventilation fan, and a ventilation damper that changes the opening ratio of the ventilation opening; 9. The wind power generation system according to claim 1, wherein:

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