JP5082503B2 - Solar cell control device - Google Patents

Description

  The present invention relates to a solar cell control device.

2. Description of the Related Art Conventionally, in a power generation device using sunlight, for example, a solar cell is cooled by circulating a coolant to increase the amount of power generated by the solar cell (see, for example, Patent Document 1). . In the solar power generation system with a cooling device described in Patent Document 1, energy consumption of the cooling pump for circulating the coolant, electric power that can be generated at the temperature of the solar cell at that time, and power generation at a predetermined reference temperature The change power generation energy, which is the difference from the possible power, is compared, and the cooling pump is driven only when the change power generation energy is larger than the consumption energy of the cooling pump.
JP-A-10-201268

  Even in the prior art described in Patent Document 1, although further improvement in power generation efficiency is desired, further improvement in power generation efficiency is desired.

  The present invention has been made to solve such problems, and an object of the present invention is to provide a solar cell control device that improves power generation efficiency.

  A solar cell control device according to the present invention is a solar cell control device that controls cooling of a solar cell, and includes a cooling energy amount that is an energy amount consumed for cooling and a power generation amount that increases due to a temperature decrease due to cooling. Compared with a certain amount of generated energy, cooling is controlled so that the amount of generated energy is larger than the amount of cooling energy.

  According to such a solar cell control device, it is a solar cell control device that controls the cooling of the solar cell, and the amount of cooling energy that is consumed for cooling and the power generation that increases due to the temperature drop due to cooling. Cooling can be controlled so that the amount of generated energy is larger than the amount of cooling energy by comparing the amount of generated energy that is an amount. As a result, the amount of energy consumed for cooling can be adjusted to match the amount of power generation that increases due to cooling, so that power generation efficiency can be improved.

  Here, a plurality of cooling energy amounts that can be supplied are set, and a power generation energy amount when each set cooling energy amount is supplied is calculated, and among the plurality of cooling energy amounts that are set, the power generation energy amount and the cooling amount are calculated. Preferably, a cooling energy amount that maximizes the difference from the energy amount is selected, and cooling is controlled based on the selected cooling energy amount. As a result, a plurality of cooling energy amounts are set, the temperature decrease of the solar cell is predicted for each set cooling energy amount, and the power generation energy amount is predicted based on this prediction. Cooling control is performed by comparing the predicted power generation energy amount with the set cooling energy amount so that the power generation energy amount is larger than the cooling energy amount. In addition, since the cooling energy amount that maximizes the difference between the generated energy amount and the cooling energy amount is selected, the energy balance can be improved, and the power generation efficiency of the solar cell can be further improved. In addition, since a plurality of cooling energy amounts are set, the control accuracy of the cooling energy amount can be improved.

  Moreover, it is preferable that a solar cell is mounted in a moving body and the amount of cooling energy is adjusted according to the moving speed of the moving body. Since the heat transfer coefficient between the outside air and the solar cell is improved during the movement and the cooling is promoted, the control accuracy can be further improved by adjusting the cooling energy amount according to the moving speed of the moving body.

  According to the solar cell control device of the present invention, the amount of energy consumed for cooling can be adjusted so as to match the amount of power generated by cooling, so that power generation efficiency can be improved.

  Hereinafter, a preferred first embodiment of a solar cell control device according to the present invention will be described with reference to the drawings. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant description is omitted. FIG. 1 is a schematic configuration diagram of a photovoltaic power generation system including a solar cell control system according to the first embodiment of the present invention.

  A solar power generation system 10 illustrated in FIG. 1 includes, for example, a solar battery 12 that is installed on a roof of a house and receives power and generates power, and a cooling device 14 that cools the solar battery 12. The electric power generated by the solar cell 12 is supplied to an electric device 16 that is electrically connected to the solar cell 12. The solar cell 12 is provided with a temperature sensor (not shown) that detects the temperature of the solar cell 12.

  The cooling device 14 is connected to a cooling pipe 18 that forms a flow path of cooling water (refrigerant, cooling fluid), a cooling pipe 18 that is connected to the cooling pipe 18 and circulates the cooling water, and is connected to the cooling pipe 18. And a radiator 22 for radiating the cooling water.

  The cooling pipe 18 has a solar cell cooling portion 18 a disposed on the back surface of the solar cell 12. The solar cell cooling unit 18a is arranged so as to meander and meander in a certain direction (left-right direction in the figure) so as to crawl the back surface side of the solar cell 12, and the area capable of heat exchange with the solar cell 12 is increased. . The solar cell cooling unit 18a is in contact with the back surface side of the solar cell 12, and transmits the heat of the solar cell 12 to the cooling water.

  The radiator 22 has, for example, a pipe to which a radiation fin is attached, and radiates cooling water. Note that a fan that blows air toward the radiator 22 may be provided, and the heat dissipation efficiency of the radiator 22 may be improved by the blowing. Then, the cooling water in the cooling pipe 18 is supplied by the cooling water pump 20, absorbs heat from the solar cell 12 by the solar cell cooling unit 18 a, is radiated by the radiator 22, and is again supplied to the cooling water pump 20. Return.

Here, the solar power generation system 10 includes a cooling electronic control unit (hereinafter referred to as “cooling ECU”) 24 that functions as a control unit that controls cooling of the solar battery 12. The cooling ECU24 includes a cooling energy amount Q ₁₁ that is consumed to cool the solar cell 12 is compared with the power generation amount (generation energy amount) Q ₁₀ of the solar cell 12 increases to decrease the cooling temperature , in which the power generation amount Q ₁₀ increasing adjusting the cooling energy amount Q ₁₁ to be greater than the cooling energy amount Q _11.

  The cooling ECU 24 includes a CPU that performs arithmetic processing, a ROM and a RAM that serve as a storage unit, an input signal circuit, an output signal circuit, a power supply circuit, and the like. The cooling ECU 24 is electrically connected to the cooling water pump 20 and transmits a drive signal to the cooling water pump 20. The cooling water pump 20 is driven and controlled by the cooling ECU 24 to control the amount of cooling energy consumed. For example, the rotation speed in the cooling water pump 20 is controlled.

  The cooling ECU 24 is electrically connected to a temperature sensor that detects the temperature of the solar cell 12, and can detect the temperature of the solar cell 12. In addition to the program for operating the CPU, the ROM of the cooling ECU 24 stores data relating to the amount of power generated at each temperature of the solar cell 12. The cooling ECU 24 is electrically connected to the solar cell 12 and is configured to measure the amount of power generated by the solar cell 12.

Next, the relationship between the power generation amount of the solar cell 12 and the presence or absence of cooling will be described with reference to FIG. FIG. 2 is a graph showing the relationship between the power generation amount of the solar cell and the presence or absence of cooling. In FIG. 2, the amount of power generation is shown on the vertical axis. In FIG. 2, the bar graph A ₀ shown on the left side shows the power generation amount P ₀ when the solar cell 12 is not cooled, and the bar graph A ₁ shown on the right side shows the power generation amount when the solar cell 12 is cooled. It shows a P _1.

As shown in FIG. 2, the power generation amount of the solar cell 12 is cooled by the cooling device 14, the power generation amount increases to P _1. The amount of power generation increased by this cooling is indicated by Q ₁₀ = P ₁ −P ₀ . Amount of energy consumed for cooling in this case is indicated by Q _11. Therefore, as the energy balance, the amount of increase in energy that can be used by cooling is Q ₁₂ = Q ₁₀ −Q ₁₁ . Cooling ECU24 includes a cooling energy amount _{Q 11,} by comparing the power generation amount _{Q 10} was _increased, so as to satisfy the condition of Q _{10> Q 11,} to adjust the cooling energy amount _{Q 11.}

  Next, an example of a control process executed by the cooling ECU 24 will be described along the flowchart of FIG. FIG. 3 is a flowchart showing a control process executed by the cooling ECU according to the first embodiment of the present invention.

First, the cooling ECU 24 inputs the power generation amount P ₀ of the solar cell 12 (S1). Next, to set the cooling energy amount _{Q 11} (S2). For example, the initial value is set based on past data. Then, based on the cooling energy amount Q ₁₁ that is configured to transmit a driving signal for driving the cooling water pump 20 is cooling means. Thus, the cooling water pump 20, the amount of energy consumed is controlled to be Q _11, solar cell 12 is cooled by the cooling water circulation, decreases temperature.

Next, the cooling ECU24 inputs the power generation amount _{P 1} after cooling (S4). Subsequently, the cooling ECU 24 calculates the power generation amount Q ₁₀ = P ₁ −P ₀ increased due to the temperature decrease due to cooling (S5). Next, the cooling ECU24 performs a comparison between the power generation amount _{Q 10} was increased and the cooling energy amount _{Q 11,} it is determined whether or not _{Q 10> Q 11 (S6)} . If it is determined that Q ₁₀ > Q ₁₁ , the process ends. If it is not determined that Q ₁₀ > Q ₁₁ , the process returns to S1. Cooling ECU24 is re-set the cooling energy amount _{Q 11} in S2 and _(adjusted) such that the Q _{10> Q 11,} and repeats the processing of S1 to S6.

Thus the solar power generation system 10 of the first embodiment, the cooling energy amount Q ₁₁ consumed by the cooling water pump 20 to cool the solar cell 12, the power generation amount Q ₁₀ was increased by temperature drop due to cooling compared to, increased power generation amount Q ₁₀ is to adjust the cooling energy amount Q ₁₁ to be greater than the cooling energy amount Q _11. Thus, to meet the power generation amount Q ₁₀ it is increased by cooling by adjusting the cooling energy amount Q _11, the power generation efficiency of the solar cell 12 is improved.

  Next, a solar cell control device according to a second embodiment of the present invention will be described with reference to the drawings. In the second embodiment, a case where the solar cell control device according to the present invention is applied to a vehicle including a solar cell will be described as an example. FIG. 4 is a perspective view showing a vehicle including the solar cell control device according to the second embodiment of the present invention.

  A vehicle (moving body) 100 shown in FIG. The solar power generation system 30 includes a solar cell 32 installed on the outer surface of the roof portion 100 a of the vehicle 100 and a cooling device 34 that cools the solar cell 32. The electric power generated by the solar battery 32 is charged in the battery of the vehicle 100 and used as the power of the vehicle 100 or the electric power of the electric equipment of the vehicle 100. Further, a temperature sensor 46 for detecting the temperature of the solar cell 32 is attached to the solar cell 32.

  The cooling device 34 includes a cooling pipe 38, a cooling water pump 40, and a radiator 42, and the cooling pipe 38 has a solar cell cooling unit 38 a disposed on the back surface of the solar cell 32. The cooling water in the cooling pipe 38 is circulated by the cooling water pump 40, absorbs heat from the solar cell 32 by the solar cell cooling unit 38 a, and is radiated by the radiator 42.

  The solar power generation system 30 compares the amount of cooling energy consumed for cooling the solar cell 32 with the amount of power generation that increases as the temperature of the solar cell 32 decreases. A cooling ECU 44 is provided as control means for adjusting the amount of cooling energy so as to increase.

  In addition to the temperature sensor 46 described above, the cooling ECU 44 includes a vehicle speed sensor 48 that measures the vehicle speed of the vehicle 100, an outside air temperature sensor 50 that measures the atmospheric temperature, a solar radiation amount sensor 52 that measures the amount of solar radiation, and the temperature of the cooling water. Is electrically connected to the water temperature sensor 54 for measuring the temperature of the solar battery 32, and data relating to the temperature of the solar battery 32, the vehicle speed of the vehicle 100, the atmospheric temperature, the amount of solar radiation, and the coolant temperature are input.

  The cooling ECU 44 sets a plurality of cooling energy amounts that can be supplied to the cooling water pump 40 that is a cooling means for cooling the solar battery 32, and the cooling capacity when the set cooling energy amount is supplied to the cooling water pump 40. Is calculated. The cooling ECU 44 refers to the performance curve of the cooling water pump 40, calculates the discharge flow rate of the cooling water pump 40, and calculates the cooling capacity.

  Further, the cooling ECU 44 calculates a temperature of the solar cell 32 by predicting a temperature drop of the solar cell 32 when the set amount of cooling energy is supplied, and calculates a power generation amount after cooling. Then, the cooling ECU 44 selects a cooling energy amount that maximizes the difference between the power generation amount (predicted value) and the cooling energy amount (setting value) that increase due to cooling, from among the plurality of cooling energy amounts that are set. The cooling of the solar cell 32 is controlled based on the selected amount of cooling energy. Specifically, the drive signal is transmitted to control the cooling water pump 40 so as to consume the selected amount of cooling energy.

Next, calculation of the solar cell temperature when the cooling water pump 40 is operated will be described. FIG. 5 is a schematic diagram for explaining a thermal calculation model of a solar cell. As shown in FIG. 5, solar energy (amount of solar radiation) Q _L is generated power P that is converted by solar cells 32 and output as electric power, atmospheric heat radiation energy Q _A radiated to the atmosphere, and solar cell cooling. is radiated to the part 38a is divided into a cooling unit radiating energy Q _C.

The solar radiation amount Q _L can be represented by Q _L = Q _A + Q _C + P (1). The atmospheric heat radiation energy Q _A can be expressed by Q _A = h _SA A _SA (T _S −T _A ) (2). However, h _SA is a heat transfer coefficient (atmospheric heat transfer coefficient) between the atmosphere and the solar battery 32, and varies depending on the atmospheric condition and the vehicle speed of the vehicle 100. A _SA is a contact area between the solar cell 32 and the atmosphere. T _S is the temperature of the solar cell 32 and T _A is the atmospheric temperature. FIG. 6 is an example of a map showing the relationship between vehicle speed and atmospheric heat transfer coefficient. The cooling ECU 44 refers to the map stored in the storage unit and sets the atmospheric heat transfer coefficient according to the vehicle speed of the vehicle 100.

The cooling part heat radiation energy Q _C can be expressed by Q _C = h _SW A _SW (T _S −T _W ) (3). However, _hSW is a heat transfer coefficient between the cooling water and the solar cell 32, and varies depending on the flow rate of the cooling water. A _SW is a contact area between the solar cell 32 and the solar cell cooling unit 38a. T _S is the temperature of the solar cell 32 and T _A is the atmospheric temperature. Using these equations (1) to (3), the temperature of the solar cell 32 after cooling can be calculated.

Next, calculation of the power generation amounts P _{21 to} P ₅₁ of the solar cell after cooling will be described. Figure 7 is an example of a map showing the relationship between the solar battery temperature T _S and the solar cell efficiency eta. In Figure 7, the horizontal axis shows the solar cell temperature T _S, the vertical axis shows the solar cell efficiency eta, the graph L1 shows the relationship between the solar battery temperature T _S and the solar cell efficiency eta. For example, in a Si crystal solar cell, generally, when the solar cell temperature increases by 10 ° C., the solar cell efficiency η decreases by about 5%. Cooling ECU44 refers to the map stored in the storage unit, the solar cell temperature _T solar cell efficiency eta _n of _S (for example n = 2 to 5), the set plurality of cooling energy amount _Q 21 _{to Q 41} Each is determined corresponding to. The cooling ECU 44 calculates the power generation amounts P _{21 to} P ₅₁ of the solar cells after cooling based on the determined solar cell efficiency η and the solar radiation amount Q _L. The power generation amounts P _{21 to} P ₅₁ of the solar cell after cooling can be obtained by P _n1 = Q _L × η _n (4).

Next, an example of the energy balance in the solar power generation system 30 will be described with reference to FIG. FIG. 8 is an example of a map showing the relationship between the cooling energy amount and the energy balance. In FIG. 8, the horizontal axis represents the cooling energy amount, and the vertical axis represents the energy amount. Graph L2 in FIG. 8 shows the amount of power generated by the solar cell 32, the graph L3 indicates the energy balance (difference between the power generation quantity _P 21 _{to P 51} of the solar cell 32 cooling energy amount). Q _{21 to} Q ₅₁ shown on the vertical axis represent a plurality of set cooling energy amounts Q _{21 to} Q ₅₁ , and are energy amounts that can be supplied to the cooling water pump 40. The set intervals of the cooling energy amounts Q _{21 to} Q ₅₁ do not have to be equal. Further, the control accuracy can be further improved by increasing the number of cooling energy amounts to be set finely.

In the map shown in FIG. 8, the cooling energy in the case of Q _41, energy balance is maximized. The cooling ECU 44 selects the cooling energy amount Q ₄₁ that maximizes the energy balance among the set cooling energy amounts Q _{21 to} Q ₅₁ , transmits a drive signal, and is consumed by the cooling water pump 40. that amount cooling energy is controlled to be Q _41.

  Next, an example of a control process executed by the cooling ECU 44 will be described along the flowchart of FIG. FIG. 9 is a flowchart showing a control process executed by the cooling ECU according to the second embodiment of the present invention.

First, the cooling ECU 44 inputs the power generation amount P ₀ of the solar cell 32, the solar cell temperature T _S , the vehicle speed, the atmospheric temperature T _S , and the solar radiation amount Q _L from each sensor (S11). Next, the cooling ECU44 is a cooling energy amount _Q 21 _{to Q 41} capable of supplying a plurality of sets to the cooling water pump 40 (S12). Subsequently, cooling ECU44 is respectively calculated cooling capacity _C 2 -C ₅ of the cooling water pump 40 in the case of providing a plurality of cooling energy amount _Q 21 _{to Q 41,} which is set (S13). Next, the cooling ECU 44 calculates the solar cell temperatures T _{S2 to} T _S5 after cooling based on the cooling capacities C _{2 to} C ₅ of the cooling water pump 40 (S14).

Subsequently, the cooling ECU 44 calculates (predicts) the power generation amounts P _{21 to} P ₅₁ of the solar cell 32 after cooling (S15). Next, the cooling ECU 44 calculates the power generation increase amounts Q _{20 to} Q ₅₀ (S16), and selects the cooling energy amount (for example, Q ₄₁ ) that maximizes the energy balance (S17). Subsequently, the cooling ECU 44 sets the amount of cooling energy selected in S17 (S18) and transmits a drive signal to the cooling pump 40. Thereafter, the cooling ECU 44 repeats the processes of S11 to S19 to optimize the set amount of cooling energy.

  In such a photovoltaic power generation system 30 of the second embodiment, the amount of cooling energy can be controlled so as to maximize the energy balance by comparing the amount of cooling energy with the amount of power generated by cooling. As a result, the amount of cooling energy can be adjusted in anticipation of an increase in the amount of power generation due to the cooling effect, so that control accuracy can be improved and wasteful energy consumption can be suppressed. As a result, the power generation efficiency is improved.

  Moreover, in the solar power generation system 30 of 2nd Embodiment, the temperature fall of a solar cell is estimated in consideration of the vehicle speed of the vehicle 100. FIG. Thus, since the solar cell temperature can be calculated in anticipation of the cooling effect of the traveling wind of the vehicle 100, the control accuracy can be improved and wasteful energy consumption can be suppressed.

  Next, another example of the energy balance in the solar power generation system will be described with reference to the drawings. FIG. 10 is another example of a map showing the relationship between the cooling energy amount and the energy balance. In FIG. 10, the horizontal axis indicates the cooling energy amount, and the vertical axis indicates the energy amount. A graph L4 in FIG. 10 shows the power generation amount of the solar cell, and a graph L5 shows the energy balance. In the map shown in FIG. 10, when the amount of cooling energy is 0, the energy balance is maximum, so the cooling ECU does not operate the cooling device.

  Next, a solar cell control device according to a third embodiment of the present invention will be described with reference to the drawings. FIG. 11 is a perspective view showing a vehicle equipped with a solar power generation system according to the third embodiment of the present invention. FIG. 12 is a solar cell in FIG. 11 and cooling air provided on the back surface of the solar cell. It is sectional drawing which shows a flow path. The solar power generation system 60 of the third embodiment is different from the solar power generation system 30 of the second embodiment in that a blower 70 is provided instead of the cooling device 34 that has the cooling water pump 40 and cools the solar battery 32 with water. However, a cooling device 64 for air-cooling the solar cell 62 is used.

  As shown in FIG. 11, the solar power generation system 60 mounted on the vehicle 102 includes a cooling device 64 that cools the solar cell 62 installed on the outer surface of the roof portion 102 a of the vehicle 102. The cooling device 64 includes a cooling air passage 68 and a blower 70 that are provided on the back surface of the solar cell 62 and allow air to flow in the front-rear direction of the vehicle 102.

  As shown in FIGS. 11 and 12, the cooling air flow path 68 is opened to the front side of the solar cell 62 in the solar cell cooling portion 68a and the roof portion 102a, which is a space formed adjacent to the back surface of the solar cell 62. The vent hole 68b and the exhaust port 68c opened to the rear side of the solar cell 62 of the roof portion 102a are provided. The blower 70 is installed in the exhaust port 68c. The outside air flowing in from the vent 68b exchanges heat with the back surface of the solar cell 62 while passing through the solar cell cooling unit 68a, thereby cooling the solar cell 62. The outside air that has passed through the solar cell cooling section 68a is blown by the blower 70, and is discharged through the vent hole 68b.

  You may apply the solar cell control apparatus of this invention with respect to this embodiment comprised in this way. In this case, the cooling ECU, which is a solar cell control device, compares the cooling energy amount that is the amount of energy consumed by the blower 70 with the power generation energy amount that is the amount of power generation that increases due to a temperature decrease due to cooling, and generates power. The amount of energy consumed by the blower 70 is controlled so that the amount of energy is greater than the amount of cooling energy. Even with this configuration, the amount of energy consumed for cooling can be adjusted to match the amount of power generated by cooling, as in the solar cell control devices of the first and second embodiments. , Power generation efficiency can be improved.

  As mentioned above, although this invention was concretely demonstrated based on the embodiment, this invention is not limited to the said embodiment. In the said embodiment, it is good also as a structure provided with multiple cooling water pumps, a fan, a blower, etc. as a cooling means to cool a solar cell. In this case, the solar cell control device compares the amount of cooling energy with the amount of power generation that increases with the total energy consumed by the pump, fan, and blower as the amount of cooling energy.

  Moreover, in the said 2nd and 3rd embodiment, although the moving body is made into the vehicle, a moving body is not limited to a vehicle, For example, even if it applies the solar cell control apparatus of this invention to other moving bodies, such as a ship. Good.

It is a schematic block diagram of the solar energy power generation system provided with the solar cell control apparatus which concerns on 1st Embodiment of this invention. It is a graph which shows the relationship between the electric power generation amount of a solar cell, and the presence or absence of cooling. It is a flowchart which shows the control processing performed with cooling ECU which concerns on 1st Embodiment of this invention. It is a perspective view which shows the vehicle provided with the solar cell control apparatus which concerns on 2nd Embodiment of this invention. It is the schematic for demonstrating the thermal calculation model of a solar cell. It is an example of the map which shows the relationship between a vehicle speed and an atmospheric heat transfer coefficient. It is an example of a map showing the relationship between the solar battery temperature T _S and the solar cell efficiency eta. It is an example of the map which shows the relationship between cooling energy and energy balance. It is a flowchart which shows the control processing performed with cooling ECU which concerns on 2nd Embodiment of this invention. It is another example of the map which shows the relationship between a cooling energy amount and an energy balance. It is a perspective view which shows the vehicle provided with the solar energy power generation system which concerns on 3rd Embodiment of this invention. It is sectional drawing which shows the solar cell in FIG. 11, and the air flow path for cooling provided in the back surface of this solar cell.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 30, 60 ... Photovoltaic power generation system, 12, 32, 62 ... Solar cell, 14, 34, 64 ... Cooling device, 16 ... Electric equipment, 18, 38 ... Piping for cooling, 18a, 38a, 68a ... Solar cell Cooling unit, 20, 40 ... cooling water pump, 22, 42 ... radiator, 24, 44 ... cooling ECU (control means), 46 ... temperature sensor, 48 ... vehicle speed sensor, 50 ... outside air temperature sensor, 52 ... solar radiation amount sensor, 54 ... water temperature sensor, 68b ... vent, 68c ... exhaust port, 70 ... blower, 100, 102 ... vehicle (mobile body), 100a, 102a ... roof, P ... power energy, Q L _... insolation, Q _A ... the atmosphere heat radiation energy, Q C _... cooling unit heat radiation energy.

Claims (3)

A solar cell control device for controlling cooling of a solar cell,
The amount of generated energy becomes larger than the amount of cooling energy by comparing the amount of cooling energy that is consumed for cooling with the amount of generated energy that is the amount of generated power that increases due to a temperature drop due to cooling. A controller for controlling the cooling,
A wind speed sensor capable of detecting an outside air flow rate with respect to the solar cell;
A solar radiation sensor for measuring solar radiation,
A solar cell temperature sensor for detecting the temperature of the solar cell;
With an atmospheric temperature sensor that detects the atmospheric temperature,
The control unit sets a heat transfer rate between the atmosphere and the solar cell according to the outside air flow rate detected by the wind speed sensor, and
The heat transfer coefficient set by the heat transfer coefficient setting unit, the atmospheric temperature detected by the atmospheric temperature sensor, and the temperature of the solar cell detected by the solar cell temperature sensor are radiated to the atmosphere. An atmospheric heat radiation energy calculating unit for calculating the atmospheric heat radiation energy.
The control unit, based on the solar radiation amount measured by the solar radiation amount sensor, the atmospheric heat radiation energy calculated by the atmospheric heat radiation energy calculation unit, and the heat radiation energy by the cooling, the temperature of the solar cell after cooling And the amount of generated power is calculated. A plurality of cooling energy amounts that can be supplied, and each of the generated energy amounts when the set cooling energy amount is supplied;
The cooling energy amount that maximizes the difference between the power generation energy amount and the cooling energy amount is selected from the set plurality of cooling energy amounts, and the cooling is controlled based on the selected cooling energy amount. The solar cell control device according to claim 1. The solar cell is mounted on a moving body,
The wind speed sensor is a speed sensor capable of detecting a moving speed of the moving body and detecting an outside air flow velocity with respect to the solar cell,
The solar cell control device according to claim 1, wherein the control unit adjusts the cooling energy amount according to the moving speed of the moving body detected by the speed sensor.

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