CN114744846B - Trapezoidal permanent magnet linear wave energy generator with adjustable transverse air gap - Google Patents
Trapezoidal permanent magnet linear wave energy generator with adjustable transverse air gap Download PDFInfo
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- CN114744846B CN114744846B CN202210505598.4A CN202210505598A CN114744846B CN 114744846 B CN114744846 B CN 114744846B CN 202210505598 A CN202210505598 A CN 202210505598A CN 114744846 B CN114744846 B CN 114744846B
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- 238000010248 power generation Methods 0.000 claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims description 8
- 229910000746 Structural steel Inorganic materials 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 description 4
- 241000143252 Idaea infirmaria Species 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
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- 230000001629 suppression Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/04—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving coil systems and stationary magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1869—Linear generators; sectional generators
- H02K7/1876—Linear generators; sectional generators with reciprocating, linearly oscillating or vibrating parts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/12—Transversal flux machines
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- 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
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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Abstract
The invention discloses a trapezoid permanent magnet linear wave energy generator with an adjustable transverse air gap, which consists of a multi-surface flat-plate secondary, a trapezoid primary armature, a linear guide rail and a linear bearing, wherein the primary armature of the motor is an isosceles trapezoid body and is matched with the multi-surface permanent magnet secondary to form controllable transverse magnetic pulling force so as to enable the primary armature to generate transverse displacement, and meanwhile, the primary armature is pushed by a wave energy floater to longitudinally reciprocate to complete a power generation function. The invention has good adaptability to wave energy working conditions with wide frequency variation, thereby greatly improving the utilization efficiency of wave energy and having remarkable comprehensive performance advantages.
Description
Technical Field
The invention relates to the field of motors, in particular to a trapezoid permanent magnet linear wave energy generator with an adjustable transverse air gap.
Background
Under the 'two carbon' wish, the cultivation of advanced green energy power generation technology is a necessary way. The utilization and development of wave energy, which is a green clean energy source with the highest energy density, is one of the important development fields. The wave energy is taken as an excellent green clean energy source, an advanced wave energy power generation technology is developed, and the wave energy power generation technology is a strong booster for achieving the aim of double carbon.
The wave energy power generation system based on the linear motor has the advantages of simple transmission mechanism, high energy conversion efficiency, suitability for large-scale application and the like, and is the main flow direction of the current wave energy power generation technology. But the output characteristics of the conventional linear generator cannot meet the operation requirements of the power generation device for wide-load and real-time variable wave energy working condition application. On one hand, the wave energy is generated with random distribution, and the existing linear generator cannot generate electricity under the condition of the lowest possible surge energy, so that the linear generator does not have excellent dynamic response capability; on the other hand, the power spectrum of the wave energy is wide, the conventional linear generator does not have quick power control capability, and the maximum surge energy cannot be effectively captured and fully utilized to improve the power generation efficiency of the system. In addition, existing linear generators do not have the capability of stabilizing voltage and protecting overload in a wide speed range. Under the wave drive with wider power density variation range, the linear generator has larger output voltage variation and can face a short-time high overload state formed by extreme surge, so that not only is the selection of the voltage-resistant grades of the power device and the insulating material difficult, but also the loss and the cost of the device are additionally increased.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides the trapezoidal permanent magnet linear wave energy generator with the adjustable transverse air gap, so that the normal force branch of the transverse air gap magnetic field can be adjusted, the output characteristic of the generator can be quickly and dynamically adjusted, the generator has good adaptability to multiple variable wave energy working conditions, and the utilization efficiency of wave energy is greatly improved.
The invention adopts the following technical scheme to achieve the aim of the invention:
the invention relates to a trapezoid permanent magnet linear wave energy generator with an adjustable transverse air gap, which consists of a permanent magnet secondary armature, a trapezoid primary armature, an air gap, two groups of linear guide rails and two groups of linear bearings, and is characterized in that:
the permanent magnet secondary is positioned on the outer side of the trapezoid primary armature and is composed of a multi-surface flat-plate secondary assembly;
the flat-shaped sub-assembly includes: a first sub-assembly, a second sub-assembly, a third sub-assembly, and a fourth sub-assembly; wherein the first secondary component and the second secondary component are composed of a built-in permanent magnet and a magnetic conductive yoke plate; the third secondary component consists of a built-in permanent magnet and a magnetic conduction yoke plate;
the central line of an isosceles trapezoid formed by the trapezoid primary armature is taken as a symmetrical line, and the first secondary component and the second secondary component are respectively positioned at the waist side of the isosceles trapezoid and are arranged in mirror symmetry with respect to the symmetrical line; the magnetizing directions of the permanent magnets in the first secondary assembly and the second secondary assembly are the same, and the first secondary assembly and the primary armature core form a parallel magnetic circuit structure;
the third sub-assembly is divided into a first bottom edge assembly and a second bottom edge assembly, is commonly positioned on the long bottom edge side of the isosceles trapezoid, and is arranged in a mirror symmetry mode with respect to the symmetry line; the two bottom edge components are composed of built-in permanent magnets and magnetic yoke plates, and the magnetizing directions of the permanent magnets of the two bottom edge components are consistent;
the fourth sub-assembly is positioned on the short bottom side of the isosceles trapezoid, and is made of non-magnetic structural steel;
an annular winding is wound on the armature core of the trapezoid primary armature, and a multi-face air gap structure is formed between the annular winding and the permanent magnet secondary;
the air gaps at the two waist edges of the trapezoid primary armature are equal and uniform, and the sum of the lengths of the air gaps at the short bottom edge and the long bottom edge of the trapezoid primary armature is the transverse displacement distance of the trapezoid primary armature;
two groups of cylindrical shafts of the two groups of linear bearings respectively pass through the third secondary assembly and the fourth secondary assembly in parallel, and two ends of the two groups of cylindrical shafts are respectively fixed in four supporting blocks at the outer sides of the permanent magnet secondary; the four supporting blocks are respectively positioned on the four sliding blocks of the two groups of linear guide rails, so that the trapezoidal primary armature forms a longitudinal moving structure on the two groups of linear guide rails through the sliding blocks under the cooperation of the linear bearings and the supporting blocks, and the power generation function is realized;
bearing sliding blocks penetrate through the two groups of cylindrical shafts of the two groups of linear bearings respectively, and the bearing sliding blocks are fixedly connected with the armature core, so that the trapezoid primary armature forms a transverse moving structure on the linear bearings to adjust the power generation function.
The trapezoid permanent magnet linear wave energy generator with the adjustable transverse air gap is also characterized in that: the number, the pole distance and the magnetizing direction length of the permanent magnets in the first sub-assembly and the second sub-assembly are the same, and the number, the pole distance and the magnetizing direction length of the permanent magnets in the first bottom edge assembly and the second bottom edge assembly are the same and different from the permanent magnets in the first sub-assembly and the second sub-assembly.
And no contact surface exists between the two groups of linear bearings and the permanent magnet secondary.
Two limiting blocks are respectively arranged at the end parts of the gap between the first bottom edge component and the second bottom edge component; the end parts of the gap between the interiors of the fourth secondary components are respectively provided with two other limiting blocks.
In the first sub-assembly and the second sub-assembly, uniform air grooves are formed in the end portion, facing the third sub-assembly, of each permanent magnet, the number of the air grooves is the same as that of the permanent magnets, and the positions of the air grooves correspond to that of the permanent magnets.
In the first bottom edge component and the second bottom edge component, uniform air grooves are formed in the end part, facing the waist edge secondary component, of each permanent magnet, the number of the air grooves is the same as that of the permanent magnets, and the positions of the air grooves correspond to that of the permanent magnets.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention can adjust the length of the transverse air gap between the primary and the secondary through controlling the normal force (branch). In the starting stage, the transverse air gap of the generator is increased to reduce the positioning (resistance) force, so that the motor has good weak motive power starting capability; in the operation stage, the air gap magnetic field can be adjusted through transverse displacement, the output voltage of the motor under the variable working condition is stabilized, meanwhile, the motor can also be used as a suppression means of air gap magnetic field harmonic waves, and the efficient operation of the generator in a wide-speed range is realized by combining the control condition of minimum loss. In addition, when irregular or extremely high surge state occurs, the output characteristic is regulated through the change of the length of the air gap, so that a certain overload protection capability is formed.
2. The invention essentially integrates transverse and longitudinal movement modes, thus having wide output characteristic adjustment freedom degree, having good adaptability to complex and changeable working condition systems and effectively improving the utilization efficiency of wave energy with wide frequency variation.
3. The trapezoid armature adopts the annular winding, and is matched with the multi-surface arranged secondary assembly to form high electromagnetic thrust output, so that the trapezoid armature has the advantages of compact structure and high material utilization rate, and has good design flexibility.
Drawings
FIG. 1 is a schematic three-dimensional structure of the present invention;
FIG. 2 is a schematic illustration of the adjustment principle of the transverse air gap of the present invention;
FIG. 3 is a schematic illustration of a surface mount sub-assembly employed in accordance with the present invention;
FIG. 4 is a second embodiment of the third and fourth sub-assemblies of the present invention;
reference numerals in the drawings: 1a first sub-assembly; 2 a second sub-assembly; 3 a third sub-assembly; 3-1 a first bottom edge component; 3-2 a second bottom edge component; 4 a fourth sub-assembly; 5a permanent magnets in the first and second sub-assemblies; 5b permanent magnets in the first bottom edge component and the second bottom edge component; 5c a permanent magnet in a fourth sub-assembly; 6 primary iron core; 7, a ring winding; 8, supporting blocks; 9, sliding blocks; 10 linear guide rails; 11a air slots in the first and second subassemblies; 11b air slots in the first bottom edge component and the second bottom edge component; 11c air slots in the fourth subassembly; 12 linear bearings; and 13 limiting blocks.
Detailed Description
The invention is further described below with reference to the drawings and specific examples.
In the embodiment, the continuous lifting requirements of the direct-drive wave energy power generation system on the aspects of low-speed starting, wide-speed-range efficiency, output power quality and the like of the generator are met, and the primary armature with the trapezoid structure is introduced, so that the normal force branch of the transverse air gap magnetic field can be adjusted, the output characteristic of the generator can be quickly and dynamically adjusted, and good matching with variable wave energy working conditions is realized; specifically, as shown in fig. 1 and 2, a trapezoidal permanent magnet linear wave energy generator with an adjustable transverse air gap is composed of a permanent magnet secondary, a trapezoidal primary armature, an air gap, two groups of linear guide rails 10 and linear bearings 12;
the permanent magnet secondary is positioned on the outer side and is composed of a multi-surface flat-plate-shaped secondary component. The flat-shaped sub-assembly includes: a first sub-assembly 1, a second sub-assembly 2, a third sub-assembly 3 and a fourth sub-assembly 4; wherein the first sub-assembly 1, the second sub-assembly 2 is composed of a built-in permanent magnet 5a and a magnetic conductive yoke plate, the third sub-assembly 3 is composed of a built-in permanent magnet 5b and a magnetic conductive yoke plate, and the material of the sub-assembly 4 is non-magnetic structural steel.
The isosceles trapezoid center line formed by the trapezoid primary armature is taken as a symmetry line, and the first secondary component 1 and the second secondary component 2 are respectively positioned at the waist side of the isosceles trapezoid and are arranged in mirror symmetry with respect to the symmetry line; the magnetizing directions of the permanent magnets 5a in the mirror symmetry positions in the first sub-assembly 1 and the second sub-assembly 2 are the same, and the permanent magnets and the primary armature core 6 form a parallel magnetic circuit structure, and natural attractive force exists between the permanent magnets and the primary armature core, which can be called no-load normal force. When the generator is loaded, the primary armature 6 is subjected to two forces oriented perpendicular to each other: longitudinal electromagnetic thrust and normal force F Normal . The normal force and the longitudinal electromagnetic thrust are the same, and can be controlled by decoupling by armature current. Due to the trapezoid shape (90) 0 - α) the normal force always perpendicular to the primary armature surface is offset from the z-axis direction, as can be seen from an orthogonal decomposition of the angle: the normal force can then be decomposed into F N3 Transverse magnetic pull force F N1 As shown in fig. 2.
The third sub-assembly 3 is a long base of a trapezoid and is divided into a base assembly 3-1 and a base assembly 3-2, and is positioned on the long base side of an isosceles trapezoid together and is arranged in mirror symmetry about a symmetry line; the two bottom edge components are composed of built-in permanent magnet 5b and guideThe yoke plate is constituted so that the magnetizing directions of the permanent magnets 5b at the corresponding positions are uniform, which generates attractive force (F) to the primary core 6 Y1 +F Y2 ) With transverse magnetic pull (F) N1 +F N2 ) In the opposite direction, can resist the influence of normal forces, as shown in fig. 2. The primary armature can reach the stress balance when no load is applied through reasonable electromagnetic design, so that the primary armature is restrained from transverse displacement, and invalid movement when no load is applied is avoided.
The fourth sub-assembly 4 is positioned on the short bottom side of the isosceles trapezoid, and is made of nonmagnetic structural steel;
the trapezoid primary armature is positioned in the permanent magnet secondary, the section of the trapezoid primary armature is isosceles trapezoid, an annular winding 7 is wound on an armature core 6, and a multi-face air gap structure is formed between the trapezoid primary armature and the permanent magnet secondary. When the primary armature adopts a ring winding, the interaction of the permanent magnet magnetic field at the bottom side of the trapezoid and the armature current can also generate a longitudinal electromagnetic thrust component, so that the thrust density of the motor is improved, and the power control is facilitated. The air gaps at the two waist sides of the trapezoid primary armature are equal and uniform, the sum of the lengths of the air gaps at the upper bottom and the lower bottom of the trapezoid is the transverse displacement distance of the primary armature, the armature current component can be accurately controlled, namely the transverse air gap of the generator has controllability, and the change of the length of the air gap can cause the change of output characteristics.
Two sets of cylindrical shafts of the two sets of linear bearings 12 respectively pass through gaps between the third sub-assembly 3 and the fourth sub-assembly 4 in parallel, and two ends of the two sets of cylindrical shafts are respectively fixed in four supporting blocks 8 on the outer side of the permanent magnet secondary. Bearing sliding blocks penetrate through two groups of cylindrical shafts of the two groups of linear bearings 12 respectively, and the bearing sliding blocks are fixedly connected with the armature core 6 to form a clamping state, so that the trapezoid primary armature forms a transverse moving structure on the linear bearings 12 to adjust the power generation function. The four supporting blocks 8 are made of non-magnetic structural steel and are respectively fixed on four sliding blocks 9 of two groups of linear guide rails 10, and the sliding blocks 9 move, namely the primary armature and the linear bearings 12 move longitudinally together. The primary armature realizes transverse and longitudinal linkage under the cooperation of the two groups of linear bearings 12 and the linear guide rail 10, realizes the adjustment of a coupling magnetic field between a primary pole and a secondary pole and the power generation function of linear motion, can well meet various performance requirements of a wave energy power generation system, and shows obvious technical advantages.
The number, pole distance and magnetizing direction length of the permanent magnets 5a in the first sub-assembly 1 and the second sub-assembly 2 are the same, so that the stress condition at the trapezoid waist side is consistent, and the normal force control is facilitated. The number, pole distance and magnetizing direction length of the permanent magnets 5b in the third sub-assembly 3 are the same, and are different from those of the permanent magnets 5a in the first sub-assembly 1 and the second sub-assembly 2, so that the auxiliary permanent magnets 5b are flexibly designed in size to match with the normal force control process, and the effective adjustment of the transverse air gap of the motor is realized.
The diameter of the cylindrical shaft of the linear bearing 12 is smaller than the height of the gap between the third sub-assembly 3 and the fourth sub-assembly 4, and the linear bearing 12 has no surface contact with the sub-assemblies so as to ensure that the lateral displacement has no influence on the sub-assemblies. Two limiting blocks 13 are respectively arranged at the end parts of the gap between the first bottom edge component 3-1 and the second bottom edge component 3-2; the ends of the space between the interiors of the fourth sub-assembly 4 are respectively provided with two further limiting blocks 13. The limiting block 13 is made of non-magnetic steel material. The function of the stopper 13 is to limit the motor longitudinal displacement distance while supporting and fixing the sub-assembly 3 so as to constitute a common structure with the sub-assembly 4.
In the first sub-assembly 1 and the second sub-assembly 2, uniform air grooves 11a are formed in the end portion of each permanent magnet 5a facing the direction of the third sub-assembly, the number of the air grooves 11a is the same as that of the permanent magnets 5a, and the positions of the air grooves 11a correspond to the positions of the permanent magnets 5 a. In the first bottom edge component 3-1 and the second bottom edge component 3-2, uniform air grooves 11b are arranged at the end part of each permanent magnet 5b facing the direction of the waist edge secondary component, the number of the air grooves 11b is the same as that of the permanent magnets 5b, and the positions of the air grooves 11b correspond to the positions of the permanent magnets 5 b.
The air grooves can block the magnetic leakage paths of the permanent magnets in the secondary assembly along the direction of the magnetic conductive yoke plate, reduce the magnetic leakage field of the permanent magnets, and the number and the positions of the air grooves are required to be matched with the layout of the permanent magnets.
The first difference from the embodiment is that the permanent magnets of the secondary assembly in the embodiment are in a surface-mounted mode, and the permanent magnets with NS alternately arranged are mounted on the surface of the magnetic yoke plate, as shown in fig. 3, so that the fluctuation of the positioning force of the motor can be reduced, and low-speed starting and power control are facilitated.
A difference from the embodiment is that in this embodiment, the permanent magnet 5c and the magnetic conductive yoke plate are disposed in the fourth sub-assembly 4, the end of each permanent magnet 5c facing the direction of the third sub-assembly is provided with uniform air slots 11c, the number of the air slots 11c is the same as that of the permanent magnets 5c, both ends of the permanent magnets 5a in the first sub-assembly 1 and the second sub-assembly 2 are provided with uniform air slots 11a, as shown in fig. 4, the fourth sub-assembly 4 also has electromagnetic force action on the armature core, and cooperates with the third sub-assembly 3 to form electromagnetic resultant force to restrain the lateral displacement of the primary armature, so as to avoid ineffective play during no-load.
In summary, the generator system not only has good weak motive power starting capability, but also can realize efficient operation in a wide-speed range and stable electric energy output, and is a preferable scheme for breaking through the technical bottleneck problem of the direct-drive wave energy power generation system.
Claims (6)
1. A trapezoid permanent magnet linear wave energy generator with an adjustable transverse air gap is composed of a permanent magnet secondary armature, a trapezoid primary armature, an air gap, two groups of linear guide rails (10) and two groups of linear bearings (12), and is characterized in that:
the permanent magnet secondary is positioned on the outer side of the trapezoid primary armature and is composed of a multi-surface flat-plate secondary assembly;
the flat-shaped sub-assembly includes: a first sub-assembly (1), a second sub-assembly (2), a third sub-assembly (3) and a fourth sub-assembly (4); wherein the first secondary assembly (1) and the second secondary assembly (2) are composed of a built-in permanent magnet (5 a) and a magnetic conductive yoke plate; the third secondary component (3) is composed of a built-in permanent magnet (5 b) and a magnetic conductive yoke plate;
the central line of an isosceles trapezoid formed by the trapezoid primary armature is taken as a symmetry line, and the first secondary component (1) and the second secondary component (2) are respectively positioned at the waist side of the isosceles trapezoid and are arranged in mirror symmetry with respect to the symmetry line; the magnetizing directions of the permanent magnets (5 a) in the first secondary assembly (1) and the second secondary assembly (2) are the same, and the first secondary assembly and the primary armature core (6) form a parallel magnetic circuit structure;
the third sub-assembly (3) is divided into a first bottom edge assembly (3-1) and a second bottom edge assembly (3-2), is commonly positioned on the long bottom edge side of the isosceles trapezoid, and is arranged in a mirror symmetry mode with respect to the symmetry line; the two bottom edge components are composed of built-in permanent magnets (5 b) and magnetic conduction yoke plates, and magnetizing directions of the permanent magnets (5 b) of the two bottom edge components are consistent;
the fourth sub-assembly (4) is positioned on the short bottom side of the isosceles trapezoid, and is made of non-magnetic structural steel;
an annular winding (7) is wound on an armature core (6) of the trapezoid primary armature, and a multi-face air gap structure is formed between the annular winding and the permanent magnet secondary;
the air gaps at the two waist edges of the trapezoid primary armature are equal and uniform, and the sum of the lengths of the air gaps at the short bottom edge and the long bottom edge of the trapezoid primary armature is the transverse displacement distance of the trapezoid primary armature;
two groups of cylindrical shafts of the two groups of linear bearings (12) respectively pass through the third sub-assembly (3) and the fourth sub-assembly (4) in parallel, and two ends of the two groups of cylindrical shafts are respectively fixed in four supporting blocks (8) at the outer sides of the permanent magnet sub-assemblies; the four supporting blocks (8) are respectively positioned on four sliding blocks (9) of the two groups of linear guide rails (10), so that the trapezoid primary armature forms a longitudinal moving structure on the two groups of linear guide rails (10) through the sliding blocks (9) under the cooperation of the linear bearings (12) and the supporting blocks (8) to realize the power generation function;
bearing sliding blocks penetrate through two groups of cylindrical shafts of the two groups of linear bearings (12) respectively, and the bearing sliding blocks are fixedly connected with the armature core (6), so that the trapezoid primary armature forms a transverse moving structure on the linear bearings (12) to adjust the power generation function.
2. The trapezoidal permanent magnet linear wave energy generator with an adjustable transverse air gap according to claim 1, wherein: the number, pole pitch and magnetizing direction length of the permanent magnets (5 a) in the first sub-assembly (1) and the second sub-assembly (2) are the same, and the number, pole pitch and magnetizing direction length of the permanent magnets (5 b) in the first bottom side assembly (3-1) and the second bottom side assembly (3-2) are the same and different from the permanent magnets (5 a) in the first sub-assembly (1) and the second sub-assembly (2).
3. The trapezoidal permanent magnet linear wave energy generator with an adjustable transverse air gap according to claim 1, wherein: there is no contact surface between the two sets of linear bearings (12) and the permanent magnet secondary.
4. The trapezoidal permanent magnet linear wave energy generator with an adjustable transverse air gap according to claim 1, wherein: two limiting blocks (13) are respectively arranged at the end parts of the gap between the first bottom edge component (3-1) and the second bottom edge component (3-2); the end parts of the gaps between the interiors of the fourth sub-assembly (4) are respectively provided with two other limiting blocks (13).
5. The trapezoidal permanent magnet linear wave energy generator with an adjustable transverse air gap according to claim 1, wherein: in the first secondary assembly (1) and the second secondary assembly (2), uniform air grooves (11 a) are formed in the end part, facing the third secondary assembly, of each permanent magnet (5 a), the number of the air grooves (11 a) is the same as that of the permanent magnets (5 a), and the positions of the air grooves (11 a) correspond to those of the permanent magnets (5 a).
6. The trapezoidal permanent magnet linear wave energy generator with an adjustable transverse air gap according to claim 1, wherein: in the first bottom edge component (3-1) and the second bottom edge component (3-2), uniform air grooves (11 b) are formed in the end part, facing the waist edge secondary component, of each permanent magnet (5 b), the number of the air grooves (11 b) is the same as that of the permanent magnets (5 b), and the positions of the air grooves (11 b) correspond to those of the permanent magnets (5 b).
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