Inclined single-axis photovoltaic tracking support inverse tracking control device suitable for complex terrain

Abstract

The utility model relates to an inclined single-shaft photovoltaic tracking support inverse tracking control device suitable for complex terrains. The inclined single-shaft photovoltaic tracking support inverse tracking control device comprises a photovoltaic tracking support, a sampling module, a communication module, a single-chip microcomputer, a power supply module and a direct current motor driving unit. The sampling module obtains output voltage data and current data of the photovoltaic tracking support; the output end of the sampling module is connected with the input end of the communication module. The output end of the communication module and the output end of the power supply module are connected with the input end of the single-chip microcomputer. The output end of the single-chip microcomputer is connected with the input end of the direct current motor driving unit, and the output end of the direct current motor driving unit is connected with the photovoltaic tracking support. The direct current motor driving unit is used for controlling the photovoltaic tracking support to rotate, and the angle of the tracking photovoltaic device is adjusted in time to optimize the power generation efficiency.

Description

Technical Field

[0001] The utility model relates to a reverse tracking control device of an inclined single-axis photovoltaic tracking bracket suitable for complex terrain, belonging to photovoltaic power generation technology. Background Art

[0002] As global demand for renewable energy increases, photovoltaic power generation, as a clean, renewable energy source, has gained widespread application in the energy sector. Within photovoltaic power generation systems, photovoltaic tracking systems are a technology that can improve the efficiency of photovoltaic modules. By adjusting the orientation of photovoltaic modules to maintain constant alignment with the sun, the photovoltaic tracking system maximizes the amount of sunlight received by the modules and improves their power generation capacity.

[0003] In complex terrain, surrounding buildings, trees, or other terrain features may create obstructions or shadows. This can prevent photovoltaic panels from effectively receiving sunlight, and traditional photovoltaic tracking systems may be unable to adjust the angle of the photovoltaic panels in time to account for these obstructions. In such cases, the discrepancy between the actual and expected sunlight conditions for the photovoltaic panels can result in a significant reduction in power generation. Utility Model Content

[0004] In order to solve the problems existing in the above-mentioned prior art, the utility model proposes a reverse tracking control device for an inclined single-axis photovoltaic tracking bracket suitable for complex terrain.

[0005] The technical solution of the utility model is as follows:

[0006] The utility model provides a reverse tracking control device for an inclined single-axis photovoltaic tracking bracket suitable for complex terrain, comprising a photovoltaic tracking bracket, a sampling module, a communication module, a single-chip microcomputer, a power supply module, and a DC motor drive unit;

[0007] The sampling module obtains the output voltage data and current data of the photovoltaic tracking bracket;

[0008] The output end of the sampling module is connected to the input end of the communication module, and the output end of the communication module and the output end of the power supply module are respectively connected to the input end of the single chip microcomputer;

[0009] The output end of the single chip microcomputer is connected to the input end of the DC motor drive unit, and the output end of the DC motor drive unit is connected to the photovoltaic tracking bracket;

[0010] The DC motor drive unit is used to control the rotation of the photovoltaic tracking bracket.

[0011] As a preferred embodiment of the present invention, the sampling module includes a current sampling circuit and a voltage sampling circuit;

[0012] The current sampling circuit includes a first four-way operational amplifier, a second four-way operational amplifier, a diode D1 and a diode D2;

[0013] A DC voltage is connected to one end of the resistor R16 and one end of the resistor R17 respectively, the other end of the resistor R16 is grounded, and the other end of the resistor R17 is connected to the input non-inverting pin of the first four-way operational amplifier;

[0014] The positive power rail pin of the first four-way operational amplifier is connected to the positive electrode of the power supply, the negative power rail pin of the first four-way operational amplifier is connected to the negative electrode of the power supply, and the output pins of the first four-way operational amplifier are respectively connected to one end of the resistor R19 and the input reverse pin of the first four-way operational amplifier;

[0015] The other end of the resistor R19 is connected to the Hall effect current converter ADC, the cathode of the diode D1, and the anode of the diode D2 respectively. The anode of the diode D1 is connected to the positive terminal of the power supply. The cathode of the diode D2 is divided into two paths, one of which is grounded, and the other is connected to the Hall effect current converter ADC through the capacitor C8.

[0016] The voltage sampling circuit includes a third operational amplifier U16A, a sliding resistor W3, a voltage sampling sensor, a diode D3 and a diode D4;

[0017] The output terminal Port of the voltage sensor is connected to the first fixed terminal of the sliding rheostat W3 through the resistor R61. The second fixed terminal of the sliding rheostat W3 is grounded after passing through the resistor R63. The capacitor C44 is connected in parallel across the resistor R63. The sliding terminal of the sliding rheostat W3 is connected to the input positive-inverting pin of the third operational amplifier U16A. The capacitor C44 is also connected to the circuit in which the sliding terminal of the sliding rheostat W3 is connected to the input positive-inverting pin of the third operational amplifier U16A.

[0018] The positive power supply pin of the third operational amplifier U16A is connected to the positive electrode of the power supply, the negative power supply pin of the third operational amplifier U16A is connected to the negative electrode of the power supply, and the output pin of the third operational amplifier U16A is respectively connected to one end of the resistor R64 and the input reverse pin of the third operational amplifier U16A;

[0019] The other end of the resistor R64 is connected to the cathode of the diode D3 and the anode of the diode D4 respectively. The anode of the diode D3 is connected to the positive electrode of the power supply, and the cathode of the diode D4 is grounded.

[0020] As a preferred embodiment of the present invention, the DC motor drive unit is a bridge drive circuit.

[0021] As a preferred embodiment of the present utility model, the photovoltaic tracking bracket includes a composite chain wheel set, a drive motor, a main beam and a transmission device;

[0022] The driving motor controls the transmission device to rotate, and the composite sprocket set on the outer ring of the transmission device meshes with the convex surface of the composite sprocket set arranged in an arc shape;

[0023] The concave surface of the composite chain wheel set is fixedly connected to the fan surface of the fan-shaped placement platform, the top of the placement platform is fixedly connected to the main beam, and the top surface of the main beam is fixedly connected to the photovoltaic component.

[0024] The utility model has the following beneficial effects:

[0025] The sampling module in this utility model acquires real-time voltage and current data from the photovoltaic tracker and transmits it to the microcontroller via the communication module. This real-time feedback mechanism enables more accurate monitoring of the photovoltaic system's operating status and timely adjustment of the tracking angle to optimize power generation efficiency. The DC motor drive unit precisely controls the rotation of the photovoltaic tracker, enabling smooth and efficient adjustment. This improves the photovoltaic system's tracking accuracy and, in turn, increases power generation. The modular design of the system (sampling module, communication module, microcontroller, power supply module, and DC motor drive unit) facilitates maintenance and upgrades. The independence of the modules also enhances system reliability. The independent design of the power supply module ensures stable power supply under various environmental conditions, preventing system failures caused by power fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a module structure diagram of the utility model.

[0027] Figure 2 This is the current sampling circuit diagram of the utility model.

[0028] Figure 3 This is a voltage sampling circuit diagram of the utility model.

[0029] Figure 4 This is the circuit diagram of the DC motor drive unit of the utility model.

[0030] Figure 5 This is a perspective view of the photovoltaic tracking bracket of the present invention.

[0031] The utility model is numbered as follows:

[0032] 1. Photovoltaic module; 2. Composite chain wheel set; 3. Drive motor; 4. Main beam; 5. Transmission device; 6. Composite chain gear set. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] It should be understood that the step numbers used herein are only for convenience of description and are not intended to limit the order in which the steps are to be executed.

[0035] It should be understood that the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0036] The terms “include” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0037] The term "and / or" refers to and includes any and all possible combinations of one or more of the associated listed items.

[0038] Example 1:

[0039] See also Figure 1 The utility model provides a reverse tracking control device for an inclined single-axis photovoltaic tracking bracket suitable for complex terrain, comprising a photovoltaic tracking bracket, a sampling module, a communication module, a single-chip microcomputer, a power supply module, and a DC motor drive unit;

[0040] The sampling module obtains the output voltage data and current data of the photovoltaic tracking bracket;

[0041] The output end of the sampling module is connected to the input end of the communication module, and the output end of the communication module and the output end of the power supply module are respectively connected to the input end of the single chip microcomputer;

[0042] The output end of the single chip microcomputer is connected to the input end of the DC motor drive unit, and the output end of the DC motor drive unit is connected to the photovoltaic tracking bracket;

[0043] The DC motor drive unit is used to control the rotation of the photovoltaic tracking bracket.

[0044] As a preferred embodiment of the present invention, the sampling module includes a current sampling circuit and a voltage sampling circuit;

[0045] The current sampling circuit includes a first four-way operational amplifier, a second four-way operational amplifier, a diode D1 and a diode D2;

[0046] A DC voltage is connected to one end of the resistor R16 and one end of the resistor R17 respectively, the other end of the resistor R16 is grounded, and the other end of the resistor R17 is connected to the input non-inverting pin of the first four-way operational amplifier;

[0047] The positive power rail pin of the first four-way operational amplifier is connected to the positive electrode of the power supply, the negative power rail pin of the first four-way operational amplifier is connected to the negative electrode of the power supply, and the output pins of the first four-way operational amplifier are respectively connected to one end of the resistor R19 and the input reverse pin of the first four-way operational amplifier;

[0048] The other end of the resistor R19 is connected to the Hall effect current converter ADC, the cathode of the diode D1, and the anode of the diode D2 respectively. The anode of the diode D1 is connected to the positive terminal of the power supply. The cathode of the diode D2 is divided into two paths, one of which is grounded, and the other is connected to the Hall effect current converter ADC through the capacitor C8.

[0049] The voltage sampling circuit includes a third operational amplifier U16A, a sliding resistor W3, a voltage sampling sensor, a diode D3 and a diode D4;

[0050] The output terminal Port of the voltage sensor is connected to the first fixed terminal of the sliding rheostat W3 through the resistor R61. The second fixed terminal of the sliding rheostat W3 is grounded after passing through the resistor R63. The capacitor C44 is connected in parallel across the resistor R63. The sliding terminal of the sliding rheostat W3 is connected to the input positive-inverting pin of the third operational amplifier U16A. The capacitor C44 is also connected to the circuit in which the sliding terminal of the sliding rheostat W3 is connected to the input positive-inverting pin of the third operational amplifier U16A.

[0051] The positive power supply pin of the third operational amplifier U16A is connected to the positive electrode of the power supply, the negative power supply pin of the third operational amplifier U16A is connected to the negative electrode of the power supply, and the output pin of the third operational amplifier U16A is respectively connected to one end of the resistor R64 and the input reverse pin of the third operational amplifier U16A;

[0052] The other end of the resistor R64 is connected to the cathode of the diode D3 and the anode of the diode D4 respectively. The anode of the diode D3 is connected to the positive electrode of the power supply, and the cathode of the diode D4 is grounded.

[0053] As a preferred embodiment of the present invention, the DC motor drive unit is a bridge drive circuit.

[0054] As a preferred embodiment of the present utility model, the photovoltaic tracking bracket includes a composite chain wheel set 2, a drive motor 3, a main beam 4 and a transmission device 5;

[0055] The driving motor 3 controls the transmission device 5 to rotate, and the composite sprocket set 6 on the outer ring of the transmission device 5 meshes with the convex surface of the composite sprocket wheel set 2 arranged in an arc shape;

[0056] The concave surface of the composite chain wheel set 2 is fixedly connected to the fan surface of the fan-shaped placement platform, the top of the placement platform is fixedly connected to the main beam 4, and the top surface of the main beam 4 is fixedly connected to the photovoltaic module 1.

[0057] Example 2:

[0058] The photovoltaic module 1 is fixed above the photovoltaic tracking bracket. The sampling module obtains the output voltage and current of each row of photovoltaic tracking brackets and inputs them into the single-chip microcomputer through the communication module. The preset control program in the single-chip microcomputer processes the collected voltage and current signals to obtain the output power of each row of photovoltaic panels. Then, the output power of each row of photovoltaic panels is used to detect the obstructing bracket. Finally, the single-chip microcomputer outputs a drive signal to the DC motor drive unit of the corresponding tracking bracket, controlling the rotation of the photovoltaic module 1 so that it is not obstructed within a preset time.

[0059] During rotation, the driving motor 3 controls the transmission device 5 to rotate, and the composite chain gear set 6 on the outer ring of the transmission device 5 drives the composite chain wheel set 2 to rotate, thereby realizing the rotation of the photovoltaic module 1.

[0060] In the embodiments of the present application, "at least one" refers to one or more, and "more" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. Among them, A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can represent: a, b, c, a and b, a and c, b and c or a and b and c, where a, b, c can be single or multiple.

[0061] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A reverse tracking control device for an inclined single-axis photovoltaic tracking bracket suitable for complex terrain, characterized in that: Including photovoltaic tracking bracket, sampling module, communication module, single chip microcomputer, power supply module, DC motor drive unit; The sampling module obtains the output voltage data and current data of the photovoltaic tracking bracket; The output end of the sampling module is connected to the input end of the communication module, and the output end of the communication module and the output end of the power supply module are respectively connected to the input end of the single chip microcomputer; The output end of the single chip microcomputer is connected to the input end of the DC motor drive unit, and the output end of the DC motor drive unit is connected to the photovoltaic tracking bracket; The DC motor drive unit is used to control the rotation of the photovoltaic tracking bracket.

2. The reverse tracking control device for an inclined single-axis photovoltaic tracking bracket suitable for complex terrain according to claim 1 is characterized in that: The sampling module includes a current sampling circuit and a voltage sampling circuit; The current sampling circuit includes a first four-way operational amplifier, a second four-way operational amplifier, a diode D1 and a diode D2; A DC voltage is connected to one end of the resistor R16 and one end of the resistor R17 respectively, the other end of the resistor R16 is grounded, and the other end of the resistor R17 is connected to the input non-inverting pin of the first four-way operational amplifier; The positive power rail pin of the first four-way operational amplifier is connected to the positive electrode of the power supply, the negative power rail pin of the first four-way operational amplifier is connected to the negative electrode of the power supply, and the output pins of the first four-way operational amplifier are respectively connected to one end of the resistor R19 and the input reverse pin of the first four-way operational amplifier; The other end of the resistor R19 is connected to the Hall effect current converter ADC, the cathode of the diode D1, and the anode of the diode D2 respectively. The anode of the diode D1 is connected to the positive terminal of the power supply. The cathode of the diode D2 is divided into two paths, one of which is grounded, and the other is connected to the Hall effect current converter ADC through the capacitor C8. The voltage sampling circuit includes a third operational amplifier U16A, a sliding resistor W3, a voltage sampling sensor, a diode D3 and a diode D4; The output terminal Port of the voltage sensor is connected to the first fixed terminal of the sliding rheostat W3 through the resistor R61. The second fixed terminal of the sliding rheostat W3 is grounded after passing through the resistor R63. The capacitor C44 is connected in parallel across the resistor R63. The sliding terminal of the sliding rheostat W3 is connected to the input positive-inverting pin of the third operational amplifier U16A. The capacitor C44 is also connected to the circuit in which the sliding terminal of the sliding rheostat W3 is connected to the input positive-inverting pin of the third operational amplifier U16A. The positive power supply pin of the third operational amplifier U16A is connected to the positive electrode of the power supply, the negative power supply pin of the third operational amplifier U16A is connected to the negative electrode of the power supply, and the output pin of the third operational amplifier U16A is respectively connected to one end of the resistor R64 and the input reverse pin of the third operational amplifier U16A; The other end of the resistor R64 is connected to the cathode of the diode D3 and the anode of the diode D4 respectively. The anode of the diode D3 is connected to the positive electrode of the power supply, and the cathode of the diode D4 is grounded.

3. The reverse tracking control device for an inclined single-axis photovoltaic tracking bracket suitable for complex terrain according to claim 1 is characterized in that: The DC motor drive unit is a bridge drive circuit.

4. The reverse tracking control device for an inclined single-axis photovoltaic tracking bracket suitable for complex terrain according to claim 1 is characterized in that: The photovoltaic tracking bracket comprises a composite chain wheel set (2), a drive motor (3), a main beam (4) and a transmission device (5); The driving motor (3) controls the transmission device (5) to rotate, and the composite chain gear set (6) on the outer ring of the transmission device (5) meshes with the convex surface of the composite chain wheel set (2) arranged in an arc shape; The concave surface of the composite chain wheel set (2) is fixedly connected to the fan surface of the fan-shaped placement platform, the top of the placement platform is fixedly connected to the main beam (4), and the top surface of the main beam (4) is fixedly connected to the photovoltaic module (1).

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