CN110190808B - Sunlight condensing device - Google Patents

Sunlight condensing device Download PDF

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Publication number
CN110190808B
CN110190808B CN201910628430.0A CN201910628430A CN110190808B CN 110190808 B CN110190808 B CN 110190808B CN 201910628430 A CN201910628430 A CN 201910628430A CN 110190808 B CN110190808 B CN 110190808B
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China
Prior art keywords
arc
shaped arm
coil
sunlight
solar
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CN201910628430.0A
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Chinese (zh)
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CN110190808A (en
Inventor
周振雄
孙继元
苑广军
牛国成
孟祥�
邹青宇
邢砾云
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Beihua University
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Beihua University
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/20—Optical components
    • H02S40/22—Light-reflecting or light-concentrating means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/52—PV systems with concentrators

Abstract

The invention discloses a sunlight condensing device. The solar light condensing device includes: the solar panel comprises a main controller, a solar panel, at least two sunlight sensors uniformly distributed on the edge of the solar panel and a plurality of double-shaft light gathering reflectors uniformly distributed on the edge of the solar panel; the sunlight sensor is used for detecting the incident angle of sunlight; the output end of each sunlight sensor is connected with the signal input end of the main controller; the control output end of the main controller is connected with the control input end of each double-shaft condensing reflector; the main controller is used for controlling the rotation angle of each biaxial condensing reflector according to the incident angle. The sunlight condensing device can reduce energy consumption in the tracking process.

Description

Sunlight condensing device
Technical Field
The invention relates to the field of photovoltaic power generation, in particular to a sunlight condensing device.
Background
In a solar power generation system, the sunlight double-shaft tracking system can greatly improve the surface illumination of a solar cell panel and increase the generated energy of the solar cell panel. However, the double-shaft tracking system needs to bear the weight of the solar panel, so that the system is heavy and energy consumption in the tracking process is large.
Disclosure of Invention
The invention aims to provide a sunlight condensing device which reduces energy consumption in a tracking process.
In order to achieve the purpose, the invention provides the following scheme:
a solar light concentrating apparatus comprising: the solar panel comprises a main controller, a solar panel, at least two sunlight sensors uniformly distributed on the edge of the solar panel and a plurality of double-shaft light gathering reflectors uniformly distributed on the edge of the solar panel; the sunlight sensor is used for detecting the incident angle of sunlight; the output end of each sunlight sensor is connected with the signal input end of the main controller; the control output end of the main controller is connected with the control input end of each double-shaft condensing reflector; the main controller is used for controlling the rotation angle of each biaxial condensing reflector according to the incidence angle.
Optionally, the sunlight sensor includes a sunlight detector, a semicircular substrate with an upward arc-shaped surface, a plurality of photo-resistors uniformly distributed on the arc-shaped surface of the semicircular substrate along a circumferential direction, and a transparent protective cover covering the semicircular substrate and the photo-resistors; the output end of each photosensitive resistor is connected with the input end of the sunlight detector; the output end of the sunlight detector is connected with the signal input end of the main controller; the photoresistor is used for converting optical signals into electric signals; the sunlight detector is used for determining the incident angle of sunlight according to the intensity of the electric signals of the photoresistors.
Optionally, the detection surfaces of at least two of the sunlight sensors are perpendicular to each other.
Optionally, the biaxial condensing mirror includes a mirror, a mirror frame, a vertical rotating motor and a horizontal rotating motor; the reflector is arranged in the reflector frame; the vertical rotating motor is positioned below the reflector frame, and the horizontal rotating motor is positioned on the left side and the right side of the reflector frame; the vertical rotating motor is used for driving the reflector frame to rotate around a vertical shaft; the horizontal rotating motor is used for driving the reflector frame to rotate around a horizontal shaft.
Optionally, the vertical rotating motor and the horizontal rotating motor are both magnetic suspension rotating motors.
Optionally, the magnetic suspension rotating electrical machine includes a magnetic suspension rotor, a magnetic suspension stator, a third coil and a fourth coil;
the magnetic suspension stator comprises a first magnet, a second magnet, a magnetic isolation material, a first magnetic conduction arm, a second magnetic conduction arm, a first coil and a second coil;
the magnetic poles of the first magnet and the second magnet are arranged in the same direction and in parallel; the magnetic isolation material is embedded between the first magnet and the second magnet;
the first magnetic conduction arm comprises a first arc-shaped arm, a second arc-shaped arm and a first connecting part; the second magnetic conduction arm comprises a third arc-shaped arm, a fourth arc-shaped arm and a second connecting part; one end of the first arc-shaped arm is connected to the N pole of the first magnet, one end of the second arc-shaped arm is connected to the N pole of the second magnet, and the other end of the first arc-shaped arm and the other end of the second arc-shaped arm are respectively connected to two ends of the first connecting part; one end of the third arc-shaped arm is connected to the S pole of the first magnet, one end of the fourth arc-shaped arm is connected to the S pole of the second magnet, and the other end of the third arc-shaped arm and the other end of the fourth arc-shaped arm are respectively connected to two ends of the second connecting part; the circle centers of the first arc-shaped arm, the second arc-shaped arm, the third arc-shaped arm and the fourth arc-shaped arm are coaxial with the center of the magnetic suspension stator;
a gap exists between the first and second arcuate arms and a gap exists between the third and fourth arcuate arms; the magnetic suspension rotor penetrates through a gap between the first arc-shaped arm and the second arc-shaped arm and a gap between the third arc-shaped arm and the fourth arc-shaped arm;
the first coil is wound on the first connecting part, and the second coil is wound on the second connecting part;
a first rectangular hole and a second rectangular hole which are parallel to each other are formed in the position, opposite to the first magnetic guide arm, of the magnetic suspension rotor; a third rectangular hole and a fourth rectangular hole which are parallel to each other are formed in the position, opposite to the second magnetic guide arm, of the magnetic suspension rotor; the first rectangular hole, the second rectangular hole, the third rectangular hole and the fourth rectangular hole are sequentially arranged; the third coil is wound around the first rectangular hole and the second rectangular hole; the fourth coil is wound around the third rectangular hole and the fourth rectangular hole;
the first coil and the second coil have opposite current directions, and the third coil and the fourth coil have opposite current directions;
the magnetic suspension stator is used for enabling the magnetic suspension rotor to suspend, and the third coil and the fourth coil are used for driving the magnetic suspension rotor to rotate around a rotating shaft in the center of the magnetic suspension stator.
Optionally, an encoder is fixedly arranged at the center of the magnetic suspension stator; the encoder is used for detecting the rotation angle and the rotation angular velocity of the magnetic suspension rotor.
Optionally, the magnetic levitation rotary electric machine further comprises a first driver, a second driver, a third driver and a fourth driver; an output terminal of the first driver is connected to both ends of the first coil, an output terminal of the second driver is connected to both ends of the second coil, an output terminal of the third driver is connected to both ends of the third coil, and an output terminal of the fourth driver is connected to both ends of the fourth coil; and the control input ends of the first driver, the second driver, the third driver and the fourth driver are all connected with the control output end of the main controller.
Optionally, the solar cell panel is rectangular; the number of the sunlight sensors and the number of the double-shaft light gathering reflectors are four; the four sunlight sensors are distributed at four corners of the solar cell panel, and the four biaxial concentrating reflectors are distributed at four edges of the solar cell panel.
Optionally, two of the solar sensors detect a horizontal incident angle of sunlight, and the other two of the solar sensors detect a vertical incident angle of sunlight.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: according to the sunlight condensing device disclosed by the invention, the double-shaft condensing reflectors are distributed around the solar cell panel to reflect sunlight to the solar cell panel, so that the sunlight can be condensed to the solar cell panel only by controlling the double-shaft condensing reflectors to rotate, and the weight of a driving target can be effectively reduced by controlling the double-shaft condensing reflectors to rotate relative to directly controlling the solar cell panel to rotate, and the energy consumption generated in the driving process is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is an overall structural view of an embodiment of a solar light collecting apparatus according to the present invention;
FIG. 2 is a plan view of the solar concentrator according to an embodiment of the present invention;
FIG. 3 is a block diagram of a solar sensor according to an embodiment of the solar concentration apparatus of the present invention;
FIG. 4 is a schematic view of the west biaxial gathering reflector angle adjustment;
FIG. 5 is a schematic view of an east-side dual-axis light gathering reflector angle adjustment;
FIG. 6 is a structural view of a biaxial condensing mirror of an embodiment of a solar light condensing apparatus according to the present invention;
fig. 7 is a structural view of a magnetic levitation rotating electrical machine of an embodiment of the solar light concentration apparatus of the present invention;
fig. 8 is a structural view of a magnetic levitation stator of an embodiment of the solar light collecting apparatus of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a sunlight condensing device which reduces energy consumption in a tracking process.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is an overall configuration diagram of an embodiment of a solar light collecting device according to the present invention.
Fig. 2 is a plan view of the solar light collecting device according to the embodiment of the present invention.
Referring to fig. 1 and 2, the solar light concentration apparatus includes: the solar energy collecting device comprises a main controller 1, a solar cell panel 2 in a rectangular shape, four sunlight sensors 3 distributed at four corners of the solar cell panel 2 and four biaxial concentrating reflectors 4 distributed at four edges of the solar cell panel 2; the sunlight sensor 3 is used for detecting the incident angle of sunlight; the output end of each sunlight sensor 3 is connected with the signal input end of the main controller 1; the control output end of the main controller 1 is connected with the control input end of each biaxial condensing reflector 4; the main controller 1 is configured to control a rotation angle of each biaxial condensing mirror 4 according to the incident angle.
The four biaxial concentrating mirrors 4 are respectively positioned in four directions of east, west, south and north. In fig. 1, the direction X is from west to east, the direction Y is from south to north, and the direction Z is vertically upward. Two solar sensors 3 adjacent to the west-side biaxial condensing reflector 4 in fig. 1 detect the incident angle of the solar light in the east-west direction, and two solar sensors 3 adjacent to the east-west biaxial condensing reflector 4 detect the incident angle of the solar light in the north-south direction. The rotation axes of the two biaxial condensing mirrors 4 located on the east-west side are the Y-axis and the Z-axis. The rotation axes of the two biaxial condensing mirrors 4 located on the north and south sides are the X axis and the Z axis. The main controller 1 controls the Y-axis rotation angle of the east-west biaxial condensing reflector 4 and the Z-axis rotation angle of the north-south biaxial condensing reflector 4 according to the incident angle in the east-west direction, and optionally, may also control the Z-axis rotation angle of the east-west biaxial condensing reflector 4 and the X-axis rotation angle of the north-south biaxial condensing reflector 4 according to the incident angle in the north-south direction.
Fig. 3 is a structural view of a solar light sensor according to an embodiment of the solar light concentrating device of the present invention.
Referring to fig. 3, the solar sensor 3 includes a solar detector (not shown), a semicircular base 302 with an upward arc surface, a plurality of photo-resistors 301 uniformly distributed on the arc surface of the semicircular base 302 along a circumferential direction, and a transparent protective cover 303 covering the semicircular base 302 and the photo-resistors 301; the output end of each photoresistor 301 is connected with the input end of the sunlight detector; the output end of the sunlight detector is connected with the signal input end of the main controller 1; the photoresistor 301 is used for converting optical signals into electric signals; the sunlight detector is used for determining the incident angle of sunlight according to the intensity of the electric signal of each photoresistor 301.
The plurality of photo resistors 301 are densely arranged to ensure the accuracy of the detection angle. The sunlight detector is an intelligent control chip. The light-transmitting protective cover 303 is a glass protective cover.
The sunlight detection principle is as follows: the photoresistor at the direct sunlight generates strongest electric signals, the photoresistors facing other directions generate weaker electric signals, and the photoresistors farther away from the direct sunlight output weaker electric signals. The photoresistor with the highest electric signal intensity is determined by comparing the intensity of the electric signals of the photoresistors, and then the incident angle of sunlight can be determined.
Each solar sensor 3 can only detect the incident angle of solar light in the corresponding direction. For example, two solar sensors located on the west can detect only the incident angle of sunlight in the east-west direction (X direction), and two sensors located on the east-west can detect only the incident angle of sunlight in the north-south direction (Y direction), thereby obtaining incident angle components in both directions. And fitting the incident angle components in the two directions to obtain the actual incident angle.
The principle of angle adjustment according to the present invention will be described below by taking as an example an adjustment scheme for adjusting the angle of the east-west biaxial condensing mirror according to the incident angle in the east-west direction (X direction).
FIG. 4 is a schematic view of the west biaxial gathering reflector angle adjustment.
The west biaxial gathering reflector adjusts the Y-axis rotation angle.
The method comprises the steps of taking a west-side double-shaft light gathering reflector as an initial position along a vertical direction, taking a connecting line between a sunlight irradiation point of the west-side double-shaft light gathering reflector and the center of a solar cell panel as a target line of sunlight reflection rays, setting an incident angle of the east-west direction (an included angle between the sunlight rays and a horizontal plane in the east-west direction) as β, and setting an included angle between the target line of the sunlight reflection rays and the horizontal plane as αWestern medicine
Figure BDA0002127918640000061
FIG. 5 is a schematic view of an east-side two-axis light gathering reflector angle adjustment.
The west biaxial gathering reflector adjusts the Y-axis rotation angle.
The east-side double-shaft light gathering reflector is taken as an initial position along the vertical direction, a connecting line of a sunlight irradiation point of the east-side double-shaft light gathering reflector and the center of the solar cell panel is a target line of sunlight reflection rays, an incident angle in the east-west direction (an included angle between the sunlight rays and a horizontal plane in the east-west direction) is β, an included angle between the target line of the sunlight reflection rays and the horizontal plane is α, and at the moment, the sunlight incident rays and the target line of the sunlight reflection rays areThe included angle between the two lines is α + (180- β). if the reflected sunlight irradiates to the center of the solar cell panel along the target line of the reflected sunlight, the bisector of the included angle between the incident sunlight and the target line of the reflected sunlight needs to coincide with the perpendicular line of the east-side double-shaft light-gathering reflector, i.e. the east-side double-shaft light-gathering reflector is adjusted to the position that the perpendicular line is positioned at the bisector of the included angle between the incident sunlight and the target line of the reflected sunlight, and then the angle is gammaEastIs composed of
Figure BDA0002127918640000071
The principle of angle adjustment according to the present invention will be described below by taking an adjustment scheme for adjusting the angle of the biaxial condensing mirror on the north-south side according to the incident angle in the north-south direction (Y direction) as an example.
The biaxial condensing mirrors on the north and south sides adjust the X-axis rotation angle.
The sunlight reflection target point (the center of the solar cell panel) is fixed, and the Z axes of the double-axis light gathering reflectors on the north and south sides are fixed, so that the target line of sunlight reflection light rays is fixed. The vertical line of the double-axis light gathering reflector on the north-south side is superposed with the target line of sunlight reflected light to be used as the initial position of the double-axis light gathering reflector on the north-south side. In the initial position, the size of an included angle between an angular bisector of an angle formed by sunlight incident rays and a target line of sunlight reflected rays and the target line of sunlight reflected rays is the size of an angle which needs to be rotated by a perpendicular line of the double-shaft light gathering reflector on the north and south sides, namely the size of the angle which needs to be rotated by the double-shaft light gathering reflector on the north and south sides.
Fig. 6 is a structural view of a biaxial condensing mirror according to an embodiment of the solar light condensing device of the present invention.
Referring to fig. 6, the biaxial condensing mirror 4 includes a mirror plate 401, a mirror frame 402, a vertical rotating motor 403, and a horizontal rotating motor 404; the mirror plate 401 is mounted within the mirror bezel 402; the vertical rotating motor 403 is located below the mirror bezel 402, and the horizontal rotating motor 404 is located on the left and right sides of the mirror bezel 402; the vertical rotating motor 403 is used for driving the mirror frame 402 to rotate around a vertical axis; the horizontal rotation motor 404 is used to drive the mirror bezel 402 to rotate about a horizontal axis.
The mirror plate 401 may be a flat mirror.
The horizontal rotating motor 404 and the vertical rotating motor 403 are driven in the manner shown in fig. 6. A U-shaped frame is fixedly connected to a driving shaft of the vertical rotating motor 403, and two horizontal rotating motors 404 are respectively fixed at the opening ends of the U-shaped frame. The drive shafts of both horizontal rotation motors 404 are fixedly connected to the mirror bezel 402. The vertical rotation motor 403 realizes the Z-axis drive by driving the U-shaped frame to rotate along the driving shaft. The horizontal rotation motor 404 rotates by driving the mirror bezel 402 to realize horizontal axis (X-axis or Y-axis) driving.
The vertical rotating motor 403 and the horizontal rotating motor 404 are both magnetic levitation rotating motors.
Fig. 7 is a structural view of a magnetic levitation rotating electrical machine according to an embodiment of the solar light collecting device of the present invention.
Referring to fig. 7, the magnetic levitation rotary electric machine includes a magnetic levitation mover 5, a magnetic levitation stator 6, a third coil 7, and a fourth coil 8; the magnetic suspension stator 6 comprises a first magnet 601, a second magnet 602, a magnetic isolation material 603, a first magnetic conduction arm, a second magnetic conduction arm, a first coil 604 and a second coil 605. The first magnetic conduction arm and the second magnetic conduction arm are both in a U shape consisting of two arc-shaped arms. The first magnetic conduction arm and the second magnetic conduction arm are made of silicon steel sheets.
The magnetic poles of the first magnet 601 and the second magnet 602 are arranged in the same direction and in parallel; the magnetic isolating material 603 is embedded between the first magnet 601 and the second magnet 602.
The first magnetic conduction arm comprises a first arc-shaped arm 606, a second arc-shaped arm 607 and a first connecting part 608; the second magnetic conduction arm comprises a third arc-shaped arm 609, a fourth arc-shaped arm 610 and a second connecting part 611; one end of the first arc-shaped arm 606 is connected to the N pole of the first magnet 601, one end of the second arc-shaped arm 607 is connected to the N pole of the second magnet 602, and the other end of the first arc-shaped arm 606 and the other end of the second arc-shaped arm 607 are respectively connected to both ends of the first connection portion 608; one end of the third arc-shaped arm 609 is connected to the S-pole of the first magnet 601, one end of the fourth arc-shaped arm 610 is connected to the S-pole of the second magnet 602, and the other end of the third arc-shaped arm 609 and the other end of the fourth arc-shaped arm 610 are respectively connected to both ends of the second connecting portion; the centers of the first arc-shaped arm 606, the second arc-shaped arm 607, the third arc-shaped arm 609 and the fourth arc-shaped arm 610 are coaxial with the center of the magnetic suspension stator 6.
A gap exists between the first arcuate arm 606 and the second arcuate arm 607, and a gap exists between the third arcuate arm 609 and the fourth arcuate arm 610; the magnetic levitation mover 5 penetrates through a gap between the first arc-shaped arm 606 and the second arc-shaped arm 607 and a gap between the third arc-shaped arm 609 and the fourth arc-shaped arm 610.
The magnetic suspension rotor 5 is rectangular. The length of the magnetic suspension rotor 5 is larger than the diameter of the circle where each arc-shaped arm is located, the width of the magnetic suspension rotor is smaller than the radius of the circle where each arc-shaped arm is located, and the height of the magnetic suspension rotor is smaller than or equal to two thirds of the gap between the two arc-shaped arms. The center of the magnetic suspension rotor 5 is coaxial with the circle center of the circle where each arc-shaped arm is located.
The first coil 604 is wound around the first connection portion 608, and the second coil 605 is wound around the second connection portion 611.
The magnetic circuit of the magnetic suspension motor of the invention is as follows:
1. the first magnetic force lines emitted from the N pole of the first magnet 601 are conducted along the first arc-shaped arm 606, and when conducted to the vicinity of the magnetic suspension mover 5, penetrate through the gap between the first arc-shaped arm 606 and the magnetic suspension mover 5, enter the magnetic suspension mover 5 and are conducted along the magnetic suspension mover 5, while the first arc-shaped arm 606 generates a magnetic attractive force to the magnetic suspension mover 5. When the first magnetic force line is conducted to the vicinity of the third arc-shaped arm 609, the first magnetic force line penetrates through a gap between the third arc-shaped arm 609 and the magnetic suspension rotor 5 to enter the third arc-shaped arm 609, and meanwhile, the third arc-shaped arm 609 generates magnetic repulsive attraction to the magnetic suspension rotor 5. The first magnetic flux is conducted in the direction of the S-pole of the first magnet 601 along the third arc-shaped arm 609, and finally returns to the S-pole of the first magnet 601 to form a closed magnetic circuit.
2. Second magnetic lines of force emanating from the N pole of the second magnet 602 are conducted along the second arc-shaped arm 607, and when conducted to the vicinity of the magnetic levitation mover 5, penetrate through the gap between the second arc-shaped arm 607 and the magnetic levitation mover 5, enter the magnetic levitation mover 5 and are conducted along the magnetic levitation mover 5, while the second arc-shaped arm 607 generates a magnetic attractive force to the magnetic levitation mover 5. When the second magnetic force line is conducted to the vicinity of the fourth arc-shaped arm 610, the second magnetic force line penetrates through the gap between the fourth arc-shaped arm 610 and the magnetic suspension rotor 5 and enters the fourth arc-shaped arm 610, and meanwhile, the fourth arc-shaped arm 610 generates magnetic repulsive attraction to the magnetic suspension rotor 5. The second magnetic flux is conducted along the fourth arc-shaped arm 610 toward the S-pole of the second magnet 602, and finally returns to the S-pole of the second magnet 602 to form a closed magnetic circuit.
The first magnetic conduction arm ensures that the magnetic suspension rotor 5 suspends by using the magnetic attraction force generated by the first arc-shaped arm 606 and the second arc-shaped arm 607 on the magnetic suspension rotor 5, and the second magnetic conduction arm ensures that the magnetic suspension rotor 5 suspends by using the magnetic repulsion force generated by the upper arc-shaped arm 609 and the second arc-shaped arm 610 on the magnetic suspension rotor 5.
3. The third magnetic flux from the first coil 604 is conducted along a loop formed by the first arc-shaped arm 607, the magnetic levitation mover 5 and the second arc-shaped arm 608.
4. The fourth magnetic flux from the second coil 605 is conducted along the loop formed by the third arc-shaped arm 609, the magnetic levitation mover 5 and the fourth arc-shaped arm 610.
The attractive force or repulsive force between the arc-shaped arm and the magnetic suspension rotor can be supplemented by adjusting the current magnitude and direction of the first coil 604 and the second coil 605, so that the magnetic suspension rotor is ensured to be in a suspension state.
For example, when the winding direction of the first coil 604 ensures that the end connected to the first arc-shaped arm 607 is N-pole and the end connected to the second arc-shaped arm 608 is S-pole, the first coil 604 generates a force to the magnetic suspension mover 5 in a direction toward the first arc-shaped arm 607. When the winding direction of the second coil 605 ensures that the end connected with the third arc-shaped arm 609 is an N pole and the end connected with the fourth arc-shaped arm 610 is an S pole, the second coil 605 generates a force towards the third arc-shaped arm 609 to the magnetic levitation mover 5.
Fig. 8 is a structural view of a magnetic levitation stator of an embodiment of the solar light collecting apparatus of the present invention.
Referring to fig. 8, a first rectangular hole 501 and a second rectangular hole 502 which are parallel to each other are formed in the position of the magnetic suspension rotor 5 facing the first magnetic guide arm; a third rectangular hole 503 and a fourth rectangular hole 504 which are parallel to each other are formed in the position, opposite to the second magnetic guide arm, of the magnetic suspension rotor 5; the first rectangular hole 501, the second rectangular hole 502, the third rectangular hole 503 and the fourth rectangular hole 504 are arranged in sequence; the third coil 7 is wound around the first rectangular hole 501 and the second rectangular hole 502; the fourth coil 8 is wound around the third rectangular hole 503 and the fourth rectangular hole 504.
The third coil 7 and the fourth coil 8 have opposite current directions.
The third coil 7 and the fourth coil 8 are used for driving the magnetic suspension rotor 5 to rotate around the rotating shaft at the center of the magnetic suspension stator 6. The third coil 7 and the fourth coil 8 can generate Lorentz force after being electrified, and the magnitude and the direction of the Lorentz force are determined by the magnitude and the direction of current passing through the Lorentz force. The third coil 7 and the fourth coil 8 can drive the magnetic suspension rotor 5 to rotate by generating Lorentz forces in opposite directions.
An encoder 9 is fixedly arranged at the center of the magnetic suspension stator 6; the encoder 9 is used to detect the rotation angle and the rotation angular velocity of the magnetic levitation mover 6.
The magnetic suspension rotating motor further comprises a first driver, a second driver, a third driver and a fourth driver; an output terminal of the first driver is connected to both ends of the first coil 604, an output terminal of the second driver is connected to both ends of the second coil 605, an output terminal of the third driver is connected to both ends of the third coil 7, and an output terminal of the fourth driver is connected to both ends of the fourth coil 8; the control input ends of the first driver, the second driver, the third driver and the fourth driver are all connected with the control output end of the main controller 1.
The main controller 1 sends driving instructions to each driver, so that each driver drives the magnitude and direction of the current of the corresponding coil according to the driving instructions, and magnetic suspension and motor rotation are achieved.
Preferably, each drive is of the BTN7971 model.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: according to the sunlight condensing device disclosed by the invention, the double-shaft condensing reflectors are distributed around the solar cell panel to reflect sunlight to the solar cell panel, so that the sunlight can be condensed to the solar cell panel only by controlling the double-shaft condensing reflectors to rotate, and the weight of a driving target can be effectively reduced by controlling the double-shaft condensing reflectors to rotate relative to directly controlling the solar cell panel to rotate, and the energy consumption generated in the driving process is reduced. Meanwhile, the magnetic suspension motor is adopted to drive the double-shaft light gathering reflector, so that friction between the rotating shaft and the motor can be avoided, friction force is reduced, and energy consumption is further reduced.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (6)

1. A solar light concentrating apparatus comprising: the solar panel comprises a main controller, a solar panel, at least two sunlight sensors uniformly distributed on the edge of the solar panel and a plurality of double-shaft light gathering reflectors uniformly distributed on the edge of the solar panel; the sunlight sensor is used for detecting the incident angle of sunlight; the output end of each sunlight sensor is connected with the signal input end of the main controller; the control output end of the main controller is connected with the control input end of each double-shaft condensing reflector; the main controller is used for controlling the rotation angle of each biaxial condensing reflector according to the incidence angle; the double-shaft light gathering reflector comprises a reflector lens, a reflector frame, a vertical rotating motor and a horizontal rotating motor; the vertical rotating motor and the horizontal rotating motor are both magnetic suspension rotating motors;
the magnetic suspension rotating motor comprises a magnetic suspension rotor, a magnetic suspension stator, a third coil and a fourth coil; the magnetic suspension stator comprises a first magnet, a second magnet, a magnetic isolation material, a first magnetic conduction arm, a second magnetic conduction arm, a first coil and a second coil; the magnetic poles of the first magnet and the second magnet are arranged in the same direction and in parallel; the magnetic isolation material is embedded between the first magnet and the second magnet; the first magnetic conduction arm comprises a first arc-shaped arm, a second arc-shaped arm and a first connecting part; the second magnetic conduction arm comprises a third arc-shaped arm, a fourth arc-shaped arm and a second connecting part; one end of the first arc-shaped arm is connected to the N pole of the first magnet, one end of the second arc-shaped arm is connected to the N pole of the second magnet, and the other end of the first arc-shaped arm and the other end of the second arc-shaped arm are respectively connected to two ends of the first connecting part; one end of the third arc-shaped arm is connected to the S pole of the first magnet, one end of the fourth arc-shaped arm is connected to the S pole of the second magnet, and the other end of the third arc-shaped arm and the other end of the fourth arc-shaped arm are respectively connected to two ends of the second connecting part; the circle centers of the first arc-shaped arm, the second arc-shaped arm, the third arc-shaped arm and the fourth arc-shaped arm are coaxial with the center of the magnetic suspension stator; a gap exists between the first and second arcuate arms and a gap exists between the third and fourth arcuate arms; the magnetic suspension rotor penetrates through a gap between the first arc-shaped arm and the second arc-shaped arm and a gap between the third arc-shaped arm and the fourth arc-shaped arm; the first coil is wound on the first connecting part, and the second coil is wound on the second connecting part; a first rectangular hole and a second rectangular hole which are parallel to each other are formed in the position, opposite to the first magnetic guide arm, of the magnetic suspension rotor; a third rectangular hole and a fourth rectangular hole which are parallel to each other are formed in the position, opposite to the second magnetic guide arm, of the magnetic suspension rotor; the first rectangular hole, the second rectangular hole, the third rectangular hole and the fourth rectangular hole are sequentially arranged; the third coil is wound around the first rectangular hole and the second rectangular hole; the fourth coil is wound around the third rectangular hole and the fourth rectangular hole; the first coil and the second coil have opposite current directions, and the third coil and the fourth coil have opposite current directions; the magnetic suspension stator is used for suspending the magnetic suspension rotor, and the third coil and the fourth coil are used for driving the magnetic suspension rotor to rotate around a rotating shaft at the center of the magnetic suspension stator;
an encoder is fixedly arranged at the center of the magnetic suspension stator; the encoder is used for detecting the rotation angle and the rotation angular velocity of the magnetic suspension rotor;
the magnetic suspension rotating motor further comprises a first driver, a second driver, a third driver and a fourth driver; an output terminal of the first driver is connected to both ends of the first coil, an output terminal of the second driver is connected to both ends of the second coil, an output terminal of the third driver is connected to both ends of the third coil, and an output terminal of the fourth driver is connected to both ends of the fourth coil; and the control input ends of the first driver, the second driver, the third driver and the fourth driver are all connected with the control output end of the main controller.
2. The solar light concentrating apparatus according to claim 1, wherein the solar sensor includes a solar detector, a semicircular base having an arc-shaped surface facing upward, a plurality of photo-resistors uniformly distributed on the arc-shaped surface of the semicircular base in a circumferential direction, and a transparent protective cover covering the semicircular base and the photo-resistors; the output end of each photosensitive resistor is connected with the input end of the sunlight detector; the output end of the sunlight detector is connected with the signal input end of the main controller; the photoresistor is used for converting optical signals into electric signals; the sunlight detector is used for determining the incident angle of sunlight according to the intensity of the electric signals of the photoresistors.
3. The solar light concentrating apparatus according to claim 2, wherein the detection surfaces of at least two of the solar sensors are perpendicular to each other.
4. The solar concentrating apparatus of claim 1 wherein the mirror plate is mounted within the mirror bezel; the vertical rotating motor is positioned below the reflector frame, and the horizontal rotating motor is positioned on the left side and the right side of the reflector frame; the vertical rotating motor is used for driving the reflector frame to rotate around a vertical shaft; the horizontal rotating motor is used for driving the reflector frame to rotate around a horizontal shaft.
5. The solar light concentrating apparatus according to claim 1, wherein the solar cell panel is rectangular in shape; the number of the sunlight sensors and the number of the double-shaft light gathering reflectors are four; the four sunlight sensors are distributed at four corners of the solar cell panel, and the four biaxial concentrating reflectors are distributed at four edges of the solar cell panel.
6. The solar light concentrating apparatus according to claim 5, wherein two of the solar sensors detect a horizontal incident angle of solar light, and the other two of the solar sensors detect a vertical incident angle of solar light.
CN201910628430.0A 2019-07-12 2019-07-12 Sunlight condensing device Expired - Fee Related CN110190808B (en)

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