An electromagnetic damping photovoltaic tracking system

Abstract

An electromagnetic damping photovoltaic tracking system includes: a tracking bracket and a driving mechanism; the tracking bracket includes a column, a rotating support part, a damping part and an electromagnetic part; the column is fixedly arranged, the rotating support part is rotatably arranged on the column, and the driving mechanism is used to drive the rotating support part to rotate; the damping part is arranged on the rotating support part, and the electromagnetic part is arranged on the column, and the electromagnetic part adsorbs the damping part when it is energized to form a damping structure for hindering the rotation of the rotating support part; the electromagnetic part is intermittently energized. The electromagnetic part is intermittently energized. In this way, when working in windy weather, since the electromagnetic part will cooperate with the damping part to generate resistance to prevent the rotating main shaft from rotating excessively when it is energized, it is difficult for the wind kinetic energy to accumulate during the rotation of the rotating main shaft, so that the tracking bracket will not be damaged due to wind resonance.

Description

Technical Field

[0001] The invention relates to the field of photovoltaics, and in particular to an electromagnetic damping photovoltaic tracking system. Background Art

[0002] With the vigorous promotion of new energy, the application of tracking systems for increasing the light exposure time of photovoltaic modules has also become popular. In order to improve the yield of photovoltaic systems, people hope to use a set of motor drive mechanisms to drive the increasingly large photovoltaic module array area. While significantly reducing the cost of the tracking system, it also brings a series of problems such as force concentration, serious wind resonance, poor wind resistance, and poor reliability. How to drive a large photovoltaic array and improve wind resistance has become an urgent problem to be solved in the tracking system manufacturing industry. Summary of the invention

[0003] In order to solve the defect that the photovoltaic tracking system in the prior art lacks wind resistance, the present invention proposes an electromagnetic damping photovoltaic tracking system.

[0004] The present invention adopts the following technical solutions:

[0005] An electromagnetic damping photovoltaic tracking system comprises: a tracking bracket and a driving mechanism;

[0006] The tracking bracket includes a column, a rotating support part, a damping part and an electromagnetic part; the column is fixedly arranged, the rotating support part is rotatably arranged on the column, and the driving mechanism is used to drive the rotating support part to rotate;

[0007] The damping part is arranged on the rotating support part, and the electromagnetic part is arranged on the column. When the electromagnetic part is energized, the damping part is adsorbed to form a damping structure for hindering the rotation of the rotating support part; the electromagnetic part is energized intermittently.

[0008] Preferably, the electromagnetic part and the driving mechanism are interlocked and energized.

[0009] Preferably, it also includes a control circuit, which includes: a controller, a first relay, a second relay, a resistor, an auxiliary power supply and a capacitor; the first relay includes a first electromagnetic coil, a first normally closed contact and a second normally closed contact; the second relay includes a second electromagnetic coil and a second normally open contact;

[0010] The controller is respectively connected to the first electromagnetic coil and the driving motor in the driving mechanism for providing power; the first normally closed contact, the resistor, the capacitor and the second normally closed contact are connected in series between the positive and negative poles of the auxiliary power supply, the second normally open contact is connected in parallel with the resistor, and the second electromagnetic coil and the electromagnetic part are both connected in parallel with the capacitor;

[0011] The controller is used to control the synchronous on and off of the first electromagnetic coil and the drive motor. When the first electromagnetic coil is powered off, the first normally closed contact and the second normally closed contact are closed, the circuit where the auxiliary power supply is located is turned on, and the capacitor is charged. During the charging process of the capacitor, the second electromagnetic coil and the electromagnetic part accumulate electrical energy and gradually increase the adsorption force; when the voltage value of the capacitor reaches the set rated value, the second electromagnetic coil adsorbs the second normally open contact to close it, and the electromagnetic part adsorbs the damping part.

[0012] Preferably, the electromagnetic part is composed of an electromagnet; when the electromagnetic part includes a plurality of electromagnets, the plurality of electromagnets are all connected in parallel with the capacitor.

[0013] Preferably, the damping part includes a fixing part, both ends of which are provided with connecting parts, and the fixing part is connected to the rotating support part through the connecting parts; when the rotating support part is at any rotation angle, the electromagnetic part adsorbs the fixing part when it is energized.

[0014] Preferably, the connecting piece cooperates with the fixing piece to form an elastic telescopic structure with the connecting piece as the telescopic end.

[0015] Preferably, the fixing part and the rotating support part are arranged relatively still, the fixing part is an arc-shaped structure, and the circle where the fixing part is located is concentric with the circle where the rotation trajectory of the rotating support part is located; when the electromagnetic part and the fixing part are in the attracted state, friction resistance is generated between the fixing part and the electromagnetic part in the rotation direction of the rotating support part to hinder the rotation of the rotating support part.

[0016] Preferably, the rotation support portion includes a driving shaft and a beam arranged on the driving shaft, some of the beams serve as damping beams, and each damping beam is provided with a damping portion.

[0017] Preferably, the columns correspond to the damping beams one by one, and each column is provided with an electromagnetic part.

[0018] Preferably, the center line of the damping portion coincides with the central axis of the rotating main shaft.

[0019] The driving mechanism includes a driving motor and a motion conversion mechanism; the motion conversion mechanism is respectively connected to each rotating support part, the driving motor is used to drive the rotation conversion mechanism, and the motion conversion mechanism is used to convert the motion output of the driving motor into the rotation of each rotating spindle.

[0020] The advantages of the present invention are:

[0021] (1) When the electromagnetic part is powered on, it generates an electromagnetic field to attract the damping part. At this time, the damping part and the electromagnetic part cooperate with each other to generate a reaction force that hinders the rotation of the rotating support part, so that the rotation of the rotating main shaft is slow, achieving wind resistance. The electromagnetic part is intermittently powered. When working in windy weather, the electromagnetic part will cooperate with the damping part to generate resistance to prevent the rotating main shaft from rotating excessively when it is powered on, making it difficult for wind kinetic energy to accumulate during the rotation of the rotating main shaft, so that the tracking bracket will not be damaged due to wind resonance; when the electromagnetic part is powered off, the rotating support part rotates normally, ensuring that the photovoltaic components on the rotating support part track the sunlight in real time.

[0022] (2) The electromagnetic part and the driving mechanism are interlocked and energized, making the control of the entire system more rigorous and reliable, which is beneficial to improving the stability and service life of the system.

[0023] (3) The electromagnetic part is arranged on the column, which ensures the number of damping parts to be arranged, thereby increasing the damping force that can be provided by the damping part and improving the anti-wind resonance capability of the tracking bracket.

[0024] (4) The center line of the damping part coincides with the central axis of the rotating main shaft, so that the damping part provides a damping force in the rotation direction of the rotating main shaft during the rotation of the rotating main shaft, thereby improving the damping effect and facilitating the deformation recovery of the damping part, thereby improving the service life of the tracking bracket. The crossbeam in the tracking bracket is arranged perpendicular to the rotating main shaft to achieve the maximum support area for the photovoltaic module, which is convenient for the installation of the photovoltaic module.

[0025] (5) The arrangement of capacitors and resistors allows the potential energy of the electromagnetic part to accumulate slowly, ensuring that the suction force will not be too large when the electromagnetic part is energized, reducing the impact force between the damping part and the electromagnetic part, and improving reliability and service life. At the same time, the slow attraction of the electromagnetic part provides a buffer time for the inertial rotation of the drive motor and the tracking bracket for several seconds after the drive motor loses power, avoiding the problem of excessive inertial impact force on the tracking bracket caused by too fast attraction.

[0026] (6) The semicircular damping part has a strong overload capacity and will not undergo plastic deformation. It can still provide damping after overload. In addition to providing dynamic damping, the tracking bracket can also provide static load support. In addition, the present invention provides a variety of damping part structures for easy implementation.

[0027] (7) Simple structure, good environmental adaptability, strong wind and sand resistance, high reliability. It can be added and modified on the original tracking bracket system, and the construction is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the installation of the tracking bracket and the connecting rod;

[0029] Figure 2 This is a schematic diagram of the tracking bracket;

[0030] Figure 3 It is the installation diagram of electromagnetic part and damping part;

[0031] Figure 4 is a schematic diagram of the control circuit;

[0032] Figure 5 Schematic diagram of the first damping structure;

[0033] Figure 6 Schematic diagram of the second damping structure;

[0034] Figure 7 This is another structural schematic diagram of the second damping part.

[0035] 1: driving mechanism; 2: connecting rod; 3: tracking bracket; 31: column; 32: rotating main shaft; 33: crossbeam; 34: rocker arm; 35: electromagnetic part; 36: damping part; 361: fixing part; 362: connecting part;

[0036] T1: controller; M: drive motor; K1: first electromagnetic coil; K1-1: first normally closed contact; K1-2: second normally closed contact; B1: auxiliary power supply; R1: resistor; K2: second electromagnetic coil; K2-1: second normally open contact; C1: capacitor; J1, J2…Jn: electromagnet. DETAILED DESCRIPTION

[0037] The electromagnetic damping photovoltaic tracking system proposed in this embodiment includes: a tracking bracket 3, a driving mechanism 1 and a control circuit. The tracking bracket 3 includes a column 31 and a rotating support part, which is rotatably arranged on the column 31 and is used to support the photovoltaic module. The driving mechanism 1 is used to drive the rotating support part to rotate so that the photovoltaic module tracks sunlight, and the control circuit is used to control the working state of the system.

[0038] Tracking bracket

[0039] In this embodiment, the tracking bracket 3 further includes a damping part 36 and an electromagnetic part 35 .

[0040] The column 31 is a support member, which is fixedly arranged. In specific implementation, the column 31 can be vertically arranged on the ground, or can be arranged on other fixed support structures.

[0041] The damping part 36 is arranged on the rotation support part, and the electromagnetic part 35 is arranged on the column 31. The electromagnetic part 35 can adsorb the damping part 36 when it is powered on. At this time, the damping part 36 is connected between the rotation support part and the electromagnetic part 35, and the damping part 36 contacts the electromagnetic part 35, and the two cooperate to hinder the rotation of the rotation support part.

[0042] That is, when the electromagnetic part 35 is powered off, the electromagnetic part 35 and the damping part 36 are separated from each other, the damping part 36 rotates with the rotating support part, and the rotating support part rotates freely relative to the column 31, so that the photovoltaic assembly tracks the sun.

[0043] Specifically, in this embodiment, the damping part 36 can slide or swing along the straight line where the rotation axis of the rotation shaft support part is located, so as to facilitate the contact or separation of the damping part 36 and the electromagnetic part 35.

[0044] In this embodiment, three implementations of the damping part 36 are provided.

[0045] The first damping part: refer to Figure 5 , the damping part 36 includes a fixing part 361, the end of which is connected to the rotating support part through a connecting part, and the connecting part serves as an auxiliary structure. When the rotating support part is at any rotation angle, the electromagnetic part 35 adsorbs the fixing part 361 when it is powered on, that is, the electromagnet 35 is always located on the arc surface formed by the sliding of the fixing part 361 along the direction of the rotating support axis. In this embodiment, after the electromagnetic part 35 is powered on to adsorb the fixing part 361, friction is generated between the two in the direction in which the fixing part 361 rotates with the rotating support part, thereby hindering the rotation of the rotating support part through motion friction, forming damping. In specific implementation, the fixing part 361 can also be arranged to cooperate with the rough surface of the electromagnetic part 35, for example, a plurality of recesses are arranged on the fixing part 361 along the relative motion direction of the fixing part 361 and the electromagnetic part 35, and a protrusion that cooperates with the recess is arranged on the electromagnetic part 35, thereby increasing the motion friction between the fixing part 361 and the electromagnetic part 35.

[0046] The second damping part: refer to Figure 6 , Figure 7 The damping part 36 is composed of a fixing part 361 and two connecting parts 362. The two connecting parts 362 are both arranged on the rotating support part, and the fixing part 361 is connected between the two connecting parts 362. The connecting part 362 cooperates with the fixing part 361 to form an elastic telescopic structure with the connecting part 362 as the telescopic end. When the rotating support part is at any rotation angle, the electromagnetic part 35 is energized to adsorb the fixing part 361, that is, the electromagnet 35 is always located on the arc surface formed by the sliding of the fixing part 361 along the rotating support axis. In this embodiment, the electromagnetic part 35 can be set to be in a state where the electromagnet and the fixing part 361 are relatively still, and the reaction force that hinders the rotation of the rotating support part is completely provided by the expansion and contraction of the connecting part 362 relative to the fixing part 361; the electromagnetic part 35 can also be set to be in a state where the fixing part 361 is adsorbed, and the fixing part 361 can generate a movement trend relative to the electromagnetic part 35 as the rotating support part rotates. At this time, there are two sources of the reaction force that hinders the rotation of the rotating support part, one is the movement friction generated between the electromagnet and the fixing part 361, and the other is the expansion and contraction of the connecting part 362 relative to the fixing part 361.

[0047] In the second damping part implementation, the elastic telescopic structure formed by the connecting member 362 and the fixing member 361 can be specifically implemented as a spring telescopic rod, a hydraulic rod or a pneumatic rod, etc.

[0048] In this embodiment, when the damping part 36 and the electromagnetic part 35 are attracted, a reaction force is generated to prevent the rotation support part from rotating, thereby consuming external potential energy such as wind energy that drives the rotation support part to rotate, thereby playing a windproof role.

[0049] Specifically, in this embodiment, the rotating support portion includes a rotating main shaft 32 and a plurality of beams 33. The rotating main shaft 32 is rotatably arranged on the column 31, and a plurality of beams 33 are arranged on the rotating main shaft 32 in parallel with each other. The driving mechanism 1 is used to drive the rotating main shaft 32 to rotate, and the rotating main shaft 32 drives the beams 33 to rotate. The plurality of beams 33 cooperate with each other to support the photovoltaic module, and the beams 33 are fixedly connected to the rotating main shaft 32, so that the photovoltaic module installed on the beams 33 is driven to rotate by the rotation of the rotating main shaft 32, so as to realize the tracking of the photovoltaic module to the sunlight.

[0050] The damping part 36 is arranged on the cross beam 33 , and the electromagnetic part 35 is arranged on the column 31 . In a normal state, the damping part 36 and the electromagnetic part 35 are separated from each other, and the damping part 36 rotates with the cross beam 33 .

[0051] In this embodiment, the electromagnetic part 35 is intermittently energized, which can be achieved by interlocking the electromagnetic part 35 with the driving mechanism. In this way, when working in windy weather, the electromagnetic part 35 will cooperate with the damping part 36 to generate resistance to prevent the rotating main shaft 32 from rotating excessively, making it difficult for wind kinetic energy to accumulate during the rotation of the rotating main shaft 32, so that the tracking bracket 3 will not be damaged due to wind resonance.

[0052] In this embodiment, the electromagnetic part 35 and the damping part 36 correspond one to one, and the damping part 36 and part of the cross beam 33 correspond one to one. The electromagnetic part 35 is installed on the column 31, and the damping part 36 is installed on the cross beam 33 close to its corresponding electromagnetic part 35, so that the electromagnetic part 35 adsorbs the corresponding damping part 36 after being powered on.

[0053] In this embodiment, the cross beam 33 corresponding to the damping part 36 is recorded as the damping cross beam 33, the column 31 corresponds to the damping cross beam one by one, the damping part 36 is arranged on the corresponding damping cross beam, and the electromagnetic part 35 is arranged on the column 31 corresponding to the damping cross beam 33. In this way, the number of damping parts is guaranteed based on the column 31, and the anti-wind resonance capability of the tracking bracket 3 is improved.

[0054] In this embodiment, refer to Figure 6The damping part 36 adopts a semicircular ring structure, that is, the connecting member 362 and the fixing member 361 are located on the same circle, so as to facilitate the deformation or rotation of the damping part 36. The center line of the damping part 36 coincides with the central axis of the rotating main shaft 32, so that the damping part provides a damping force in the rotation direction of the rotating main shaft 32 during the rotation of the rotating main shaft 32, thereby improving the damping effect and facilitating the deformation recovery of the damping part 36, thereby improving the service life of the tracking bracket 3.

[0055] In this embodiment, the crossbeam 33 in the tracking bracket 3 is arranged perpendicular to the rotation main axis 32 to achieve the maximum supporting area for the photovoltaic module and facilitate the installation of the photovoltaic module.

[0056] Driving mechanism 1

[0057] In this embodiment, the driving mechanism 1 includes a driving motor M and a motion conversion mechanism; the motion conversion mechanism is respectively connected to each rotating support part, the driving motor M is used to drive the rotation conversion mechanism, and the motion conversion mechanism is used to convert the motion output of the driving motor M into the rotation of each rotating spindle 32.

[0058] Furthermore, the motion conversion mechanism includes a connecting rod 2 and a rocker arm 34. Each rotating main shaft 32 is provided with a rocker arm 34, and the connecting rod 2 is hinged to each rocker arm 34, so that the movement of the connecting rod 2 drives each rocker arm 34 to rotate around the central axis of the corresponding rotating main shaft 32, thereby driving the rotating main shaft 32 to rotate.

[0059] In this embodiment, the driving motor M can drive any rotating spindle 32 to rotate, thereby driving other rotating spindles 32 to rotate through the connecting rod 2; the driving motor M can also drive the connecting rod 2 to move, thereby rotating all rotating spindles 32 through the connecting rod 2.

[0060] The driving mechanism 1 in this embodiment can adopt any existing method, which will not be described in detail here.

[0061] Control Circuit

[0062] The control circuit includes: a controller T1, a first relay, a second relay, a resistor R1, an auxiliary power supply B1 and a capacitor C1. The first relay includes a first electromagnetic coil K1, a first normally closed contact K1-1 and a second normally closed contact K1-2; the second relay includes a second electromagnetic coil K2 and a second normally open contact K2-1.

[0063] The controller T1 is respectively connected to the first electromagnetic coil K1 and the driving motor M. The first electromagnetic coil K1 and the driving motor M are connected in parallel to obtain power from the controller T1.

[0064] The first normally closed contact K1-1, the resistor R1, the capacitor C1 and the second normally closed contact K1-2 are connected in series between the positive and negative electrodes of the auxiliary power supply B1 to form a closed loop. The second normally open contact K2-1 is connected in parallel with the resistor R1, and the second electromagnetic coil K2 and the electromagnetic part 35 are both connected in parallel with the capacitor C1.

[0065] The controller T1 is used to control the synchronous on and off of the first electromagnetic coil K1 and the drive motor M. When the first electromagnetic coil K1 is powered off, the first normally closed contact K1-1 and the second normally closed contact K1-2 are closed, and the circuit formed by the auxiliary power supply B1, the resistor R1 and the capacitor C1 is turned on, and the capacitor C1 is charged. During the charging process of the capacitor C1, the second electromagnetic coil K2 and the electromagnetic part 35 accumulate electrical energy and gradually increase the adsorption force; when the voltage value of the capacitor C1 reaches the set rated value, the second electromagnetic coil K2 accumulates sufficient potential energy to adsorb the second normally open contact K2-1 to make it closed, and the electromagnetic part 35 also accumulates sufficient potential energy to adsorb the damping part 36.

[0066] When the first electromagnetic coil K1 is powered off, the driving motor M is also powered off. At this time, the tracking bracket is only pushed by the wind, and the formation of the damping part can resist the wind force, thereby achieving shock absorption of the photovoltaic module and avoiding the accumulation of wind kinetic energy on the tracking bracket.

[0067] The arrangement of capacitor C1 and resistor R1 allows the potential energy of the electromagnetic part 35 to accumulate slowly, ensuring that the suction force will not be too large at the moment the electromagnetic part 35 is powered on, reducing the impact force between the damping part 36 and the electromagnetic part 35, and improving reliability and service life. At the same time, the slow attraction of the electromagnetic part 35 provides a buffer time for the inertial rotation of the drive motor M and the tracking bracket 3 for several seconds after the drive motor M loses power, avoiding the problem of excessive inertial impact force on the tracking bracket 3 caused by too fast attraction.

[0068] After the controller T1 controls the first electromagnetic coil K1 and the drive motor M to be energized, the first normally closed contact K1-1 and the second normally closed contact K1-2 are both disconnected, so that the circuit where the auxiliary power supply B1 is located is disconnected, and the second electromagnetic coil K2 and the electromagnetic part 35 are disconnected from the auxiliary power supply B1. However, due to the presence of the capacitor C1, the electromagnetic dissipation of the second electromagnetic coil K2 and the electromagnetic part 35 is delayed, so that the electromagnetic part 35 and the damping part 36 are slowly separated as the electromagnetic field weakens, avoiding inertial damage caused by the two separating too quickly.

[0069] In this embodiment, the electromagnetic part 35 is composed of an electromagnet; when the electromagnetic part 35 includes a plurality of electromagnets J1, J2...Jn, the plurality of electromagnets J1, J2...Jn are all connected in parallel with the capacitor C1.

[0070] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electromagnetic damping photovoltaic tracking system, characterized in that: include: Tracking bracket (3) and driving mechanism (1); The tracking bracket (3) comprises a column (31), a rotation support part, a damping part (36) and an electromagnetic part (35); the column (31) is fixedly arranged, the rotation support part is rotationally arranged on the column (31), and the driving mechanism (1) is used to drive the rotation support part to rotate; The damping part (36) is arranged on the rotating support part, and the electromagnetic part (35) is arranged on the column (31). When the electromagnetic part (35) is energized, it adsorbs the damping part (36) to form a damping structure for hindering the rotation of the rotating support part. The electromagnetic part (35) is intermittently energized; The invention also includes a control circuit, which includes: a controller (T1), a first relay, a second relay, a resistor (R1), an auxiliary power supply (B1) and a capacitor (C1); the first relay includes a first electromagnetic coil (K1), a first normally closed contact (K1-1) and a second normally closed contact (K1-2); the second relay includes a second electromagnetic coil (K2) and a second normally open contact (K2-1); The controller (T1) is respectively connected to the first electromagnetic coil (K1) and the driving motor (M) for providing power in the driving mechanism (1); the first normally closed contact (K1-1), the resistor (R1), the capacitor (C1) and the second normally closed contact (K1-2) are connected in series between the positive and negative electrodes of the auxiliary power supply (B1); the second normally open contact (K2-1) is connected in parallel with the resistor (R1); and the second electromagnetic coil (K2) and the electromagnetic part (35) are both connected in parallel with the capacitor (C1); The controller (T1) is used to control the synchronous on and off of the first electromagnetic coil (K1) and the driving motor (M); when the first electromagnetic coil (K1) is powered off, the first normally closed contact (K1-1) and the second normally closed contact (K1-2) are closed, the circuit where the auxiliary power supply (B1) is located is turned on, and the capacitor (C1) is charged; during the charging process of the capacitor (C1), the second electromagnetic coil (K2) and the electromagnetic part (35) accumulate electric energy and gradually increase the adsorption force; when the voltage value of the capacitor (C1) reaches a set rated value, the second electromagnetic coil (K2) adsorbs the second normally open contact (K2-1) to make it closed, and the electromagnetic part (35) adsorbs the damping part (36).

2. The electromagnetic damping photovoltaic tracking system according to claim 1, characterized in that: The electromagnetic part (35) is interlocked with the driving mechanism and energized.

3. The electromagnetic damping photovoltaic tracking system according to claim 1, characterized in that: The electromagnetic part (35) is composed of an electromagnet; when the electromagnetic part (35) includes a plurality of electromagnets, the plurality of electromagnets are connected in parallel with the capacitor (C1).

4. The electromagnetic damping photovoltaic tracking system according to claim 1, characterized in that: The damping part (36) comprises a fixing part (361), and connecting parts (362) are respectively provided at both ends of the fixing part (361). The fixing part (361) is connected to the rotating support part via the connecting parts (362); when the rotating support part is at any rotation angle, the electromagnetic part (35) adsorbs the fixing part (361) in the energized state.

5. The electromagnetic damping photovoltaic tracking system according to claim 4, characterized in that: The connecting piece (362) cooperates with the fixing piece (361) to form an elastic telescopic structure with the connecting piece (362) as the telescopic end.

6. The electromagnetic damping photovoltaic tracking system according to claim 4 or 5, characterized in that: The fixing member (361) and the rotating support part are relatively stationary, the fixing member (361) is an arc-shaped structure, and the circle where the fixing member (361) is located is concentric with the circle where the rotation trajectory of the rotating support part is located; when the electromagnetic part (35) and the fixing member (361) are in an attracted state, friction resistance is generated between the fixing member (361) and the electromagnetic part (35) in the rotation direction of the rotating support part to hinder the rotation of the rotating support part.

7. The electromagnetic damping photovoltaic tracking system according to claim 1, characterized in that: The rotation support part comprises a driving shaft (32) and a crossbeam (33) arranged on the driving shaft (32); part of the crossbeam (33) serves as a damping crossbeam, and each damping crossbeam (33) is provided with a damping part (36).

8. The electromagnetic damping photovoltaic tracking system according to claim 7, characterized in that: The upright posts (31) correspond to the damping cross beams one by one, and each upright post (31) is provided with an electromagnetic part (35).

9. The electromagnetic damping photovoltaic tracking system according to claim 1, characterized in that: The driving mechanism (1) comprises a driving motor (M) and a motion conversion mechanism; the motion conversion mechanism is respectively connected to each rotating support part, the driving motor (M) is used to drive the rotation conversion mechanism, and the motion conversion mechanism is used to convert the motion output of the driving motor (M) into the rotation of each active rotating shaft (32).

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