Output control device of solar cell

Abstract

The invention belongs to the technical field of solar cells, and particularly relates to an output control device of a solar cell, which comprises a photovoltaic panel, an environment sensor, a first controller, a parameter sensor, a second controller, an inverter and a mains supply synchronization device.The photovoltaic panel, the environment sensor and the first controller are electrically connected with one another. According to the output control device of the solar cell, the environment sensor is arranged to sense data of the photovoltaic panel, the first controller is matched to conveniently observe and understand data parameters, the environment sensor and the first controller are matched to assist in adjusting the photovoltaic panel and positioning and tracking the maximum power point of the photovoltaic panel, and the parameter sensor is arranged to adjust the maximum power point of the photovoltaic panel. According to the inverter, data of the inverter can be inducted, data parameters can be conveniently observed and understood in cooperation with the second controller, the output voltage is controlled at a set value, and therefore the stability of the output voltage is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of solar cells, and particularly relates to an output control device for a solar cell. Background Art

[0002] A solar cell (solar chip, photovoltaic cell) is a thin film of a photoelectric semiconductor that directly generates electricity using sunlight. As long as it is irradiated by light with a certain illumination condition, it can instantaneously output voltage and generate current in the case of a loop, which is called solar photovoltaics in physics, abbreviated as PV. A solar cell is a device that directly converts light energy into electrical energy through the photovoltaic effect or the photochemical effect. Crystalline silicon solar cells that work through the photovoltaic effect are the mainstream, while thin-film batteries that work through the photochemical effect are still in their infancy. When a solar cell is in use, an output control device with better light utilization efficiency and safer and more stable voltage output is required. Summary of the Invention

[0003] To solve the problems raised in the above background art, the present invention provides an output control device for a solar cell, which has the characteristics of better light utilization efficiency and safer and more stable voltage output.

[0004] To achieve the above object, the present invention provides the following technical solution: An output control device for a solar cell includes a photovoltaic panel, an environmental sensor, a first controller, a parameter sensor, a second controller, an inverter, and a mains synchronization device. The photovoltaic panel, the environmental sensor, and the first controller are electrically connected to each other. The photovoltaic panel is electrically connected to the inverter. The inverter, the parameter sensor, and the second controller are telecommunication-connected. The inverter is electrically connected to the mains synchronization device.

[0005] Preferably, the environmental sensor is a light sensor and a temperature sensor.

[0006] Preferably, the first controller is an MPPT controller.

[0007] Preferably, the parameter sensor is a voltage sensor.

[0008] Preferably, the second controller is a PID controller.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. In the present invention, by setting up an environmental sensor, it can sense and process the data of the photovoltaic panel. Cooperating with the first controller, it can facilitate the observation and understanding of the data parameters. The two cooperate to assist in adjusting the photovoltaic panel, and can locate and track the maximum power point of the photovoltaic panel. By setting up a parameter sensor, it can sense and process the data of the inverter. Cooperating with the second controller, it can facilitate the observation and understanding of the data parameters, control the output voltage within the set value, and thus ensure the stability of the output voltage. By setting up a mains synchronization device, it can keep the photovoltaic power generation synchronized with the mains network, and thus ensure the safe and stable integration of the photovoltaic power generation system into the grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0012] Figure 1 is a schematic structural diagram of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0014] Embodiment 1

[0015] Please refer to Figure 1 , the present invention provides the following technical solutions: An output control device for a solar cell, including a photovoltaic panel, an environmental sensor, a first controller, a parameter sensor, a second controller, an inverter, and a mains synchronization device. By setting up an environmental sensor, it can sense and process the data of the photovoltaic panel. Cooperating with the first controller, it can facilitate the observation and understanding of the data parameters. The two cooperate to assist in adjusting the photovoltaic panel, and can locate and track the maximum power point of the photovoltaic panel. By setting up a parameter sensor, it can sense and process the data of the inverter. Cooperating with the second controller, it can facilitate the observation and understanding of the data parameters, control the output voltage within the set value, and thus ensure the stability of the output voltage. By setting up a mains synchronization device, it can keep the photovoltaic power generation synchronized with the mains network, and thus ensure the safe and stable integration of the photovoltaic power generation system into the grid. The photovoltaic panel, the environmental sensor, and the first controller are electrically connected to each other. The photovoltaic panel is electrically connected to the inverter. The inverter, the parameter sensor, and the second controller are teleconnected. The inverter is electrically connected to the mains synchronization device.

[0016] Specifically, the environmental sensor is a light sensor and a temperature sensor. By setting the environmental sensor as a light sensor and a temperature sensor, the light and temperature of the photovoltaic panel can be detected and processed.

[0017] Specifically, the first controller is an MPPT controller. By setting the MPPT controller, the control effect on the photovoltaic panel can be ensured.

[0018] Specifically, the parameter sensor is a voltage sensor.

[0019] Specifically, the second controller is a PID controller. By setting the second controller as a PID controller, the control effect on the inverter can be ensured.

[0020] The working principle and usage process of the present invention:

[0021] S1. First, use the light sensor and temperature sensor in the environmental sensor to sense and detect the light and temperature of the photovoltaic panel. At the same time, cooperate with the MPPT controller of the first controller to receive and process the data, receive and analyze the characteristic curve, so as to adjust the working point of the photovoltaic panel to make it close to or reach the maximum power point;

[0022] S2. The voltage sensor of the parameter sensor monitors the output voltage of the inverter in real time to ensure that it is within the set range. When the output voltage deviates from the set value, the PID controller of the second controller adjusts the control parameters (duty cycle of the PWM signal) of the inverter according to the feedback signal of the voltage sensor to make the output voltage return to the set value, thereby ensuring the stability of the output voltage;

[0023] S3. According to the frequency and phase of the mains network, the PID of the second controller adjusts the output frequency and phase of the inverter to keep it synchronized with the mains network, ensuring that the photovoltaic power generation system is safely and stably connected to the grid.

[0024] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A solar cell output control device, comprising a photovoltaic panel, an environmental sensor, a first controller, a parameter sensor, a second controller, an inverter and a mains synchronization device, characterized in that: The photovoltaic panel, the environmental sensor and the first controller are electrically connected to each other, the photovoltaic panel and the inverter are electrically connected to each other, the inverter, the parameter sensor and the second controller are electrically connected, and the inverter is electrically connected to the mains synchronization device.

2. The output control device of a solar cell according to claim 1, characterized in that: The environmental sensors are a light sensor and a temperature sensor.

3. The output control device of a solar cell according to claim 1, characterized in that: The first controller is an MPPT controller.

4. The output control device of a solar cell according to claim 1, characterized in that: The parameter sensor is a voltage sensor.

5. The output control device of a solar cell according to claim 1, characterized in that: The second controller is a PID controller.

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