CN110661395A - Linear generator - Google Patents
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- CN110661395A CN110661395A CN201810695160.0A CN201810695160A CN110661395A CN 110661395 A CN110661395 A CN 110661395A CN 201810695160 A CN201810695160 A CN 201810695160A CN 110661395 A CN110661395 A CN 110661395A
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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
- H02K35/06—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving flux distributors, and both coil systems and magnets stationary
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Abstract
The invention discloses a linear generator, which comprises a primary and a secondary, wherein the primary comprises a primary yoke, a coil and at least one permanent magnet array, N, S poles of permanent magnets in the permanent magnet array are alternately and uniformly arranged, the primary yoke is provided with a primary convex part, the coil is sleeved on the primary convex part or the primary yoke, and the permanent magnet array is arranged on the primary yoke; the secondary comprises a secondary yoke and secondary teeth, the secondary teeth are of a flat plate type and uniformly toothed plunging finger-shaped structure, the tooth pitch of the secondary teeth is equal to non-zero even times of the pole pitch of the permanent magnet, and a gap is formed between the secondary yoke and the primary boss and is a first air gap; the permanent magnet array and the secondary teeth are arranged on the same plane or an entire column of permanent magnets are arranged below the secondary teeth, and a gap is formed between the permanent magnet array and the secondary teeth and is a second air gap; the secondary teeth move in a plane, and current is generated in the coil through the magnetic circuit and the change of magnetic flux. The invention provides a novel linear generator which is small in size and simple in structure.
Description
Technical Field
The invention relates to the field of generators, in particular to a linear generator.
Background
The conventional linear generator consists of a primary coil and a secondary permanent magnet, wherein the primary coil consists of a plurality of groups of coils, the secondary is provided with the permanent magnets with opposite polarities which are alternately distributed, the mass of the secondary is larger, the secondary rotates or linearly moves under the condition of large mass, the structure of the motor is complex, the power required by the secondary during movement is large, and the energy consumption required by current generation is high; due to the length limitation of the coil winding tooth space, the conventional linear generator is difficult to be small in size.
Disclosure of Invention
The invention aims to overcome the defects of relatively complex structure and low efficiency of the conventional linear generator and provide a novel linear generator with small volume and simple structure.
In order to achieve the purpose, the invention adopts the following technical scheme: a linear generator comprises a primary and a secondary, wherein the primary comprises a primary yoke, a coil and at least one permanent magnet array, poles N, S of the permanent magnets in the permanent magnet array are alternately and uniformly arranged, a primary convex part is arranged on the primary yoke, the coil is sleeved on the primary convex part or the primary yoke, and the permanent magnet array is arranged on the primary yoke; the secondary comprises a secondary yoke and secondary teeth, the secondary teeth are of a flat plate type and uniformly toothed plunging finger-shaped structure, the tooth pitch of the secondary teeth is equal to non-zero even times of the pole pitch of the permanent magnet, and a gap is formed between the secondary yoke and the primary boss and is a first air gap; the permanent magnet array and the secondary teeth are arranged on the same plane or an entire column of permanent magnets are arranged below the secondary teeth, and a gap is formed between the permanent magnet array and the secondary teeth and is a second air gap; the secondary teeth move in a plane, and current is generated in the coil through the magnetic circuit and the change of magnetic flux.
The primary yoke is of an L-shaped structure, the primary lug boss is arranged at the end part of the horizontal section of the L-shaped structure, the upper end surface of the vertical section of the L-shaped structure and the upper end surface of the primary lug boss are both provided with sliding grooves, and the primary yoke comprises a row of permanent magnet arrays; the secondary is arranged above the primary lug boss, the secondary yoke corresponds to the primary lug boss, the secondary teeth are arranged on one side of the secondary yoke, at least two groups of sliding blocks are arranged on the secondary, and the two groups of sliding blocks respectively slide in the two sliding grooves.
The coil is sleeved on the vertical section of the primary yoke or the bottom of the primary yoke or the primary convex part, the permanent magnet array is arranged on the inner side surface of the upper part of the vertical section, and the permanent magnet array and the secondary teeth are arranged in the same plane above the coil.
The coil is sleeved on the bottom of the primary yoke or the primary bulge, and the permanent magnet array is arranged on the bottom surface of the primary yoke below the secondary yoke and is in the same plane with the coil.
The primary yoke is of a U-shaped structure, sliding grooves are formed in the upper end faces of the two sides of the primary yoke, the primary protruding portion is arranged on the bottom face of the primary yoke and comprises two permanent magnet arrays, the secondary protruding portion is arranged above the primary protruding portion, the secondary teeth are arranged on the two sides of the secondary yoke, at least two groups of sliding blocks are arranged on the secondary yoke, and the sliding blocks slide in the sliding grooves in the two sides of the primary yoke respectively.
The two permanent magnet arrays are respectively arranged on the inner side surfaces of the upper ends of the two sides of the primary yoke and are arranged in the same plane corresponding to the secondary teeth.
The coil is sleeved on the primary boss.
The primary comprises two coils which are respectively sleeved on two sides of the primary yoke, or the two coils are respectively sleeved on the bottoms of the primary yokes on two sides of the primary lug boss.
The two permanent magnet arrays are respectively arranged on two sides of the bottom of the primary yoke, and the coils are sleeved on the convex parts, or the two coils are respectively sleeved on the bottoms of the primary yokes on two sides of the convex parts.
And corresponding secondary teeth on two sides of the secondary yoke are staggered by half pitch in the length direction of the secondary yoke, or permanent magnets at corresponding positions of two permanent magnet arrays are staggered by half pole pitch in the length direction of the primary yoke.
The technical scheme of the invention has the following positive effects: the permanent magnet and the coil of the linear generator are all arranged on the primary, the secondary is only made of magnetic conductive materials with teeth, permanent magnets and windings are not needed, the secondary has a simple structure and low cost, and the linear generator has obvious advantages in the field of long-stroke operation. Because the structure of the generator is changed and a large coil is adopted, the tooth space of a coil winding does not need to be considered, and the size of the generator can be miniaturized. In addition, as the number of permanent magnets increases, the power generation potential can be made larger.
Drawings
Fig. 1 is a top view of a linear generator according to an embodiment of the present invention.
FIG. 2 is a side view of a linear generator according to an embodiment of the present invention
FIG. 3 is a perspective view of a linear generator according to an embodiment of the present invention
Fig. 4 is a sectional view taken along line a-a of fig. 3.
Fig. 5 is a second top view of the linear generator according to the first embodiment of the present invention.
Fig. 6 is a second perspective view of a linear generator according to a first embodiment of the invention.
Fig. 7 is a sectional view taken along line B-B in fig. 6.
Fig. 8 is a third perspective view of a linear generator according to a first embodiment of the present invention.
Fig. 9 is a cross-sectional view taken along line C-C of fig. 8.
Fig. 10 is a schematic structural view of the secondary teeth at the two ends of the secondary in the second embodiment of the present invention staggered by half a pole pitch.
Fig. 11 is a schematic structural diagram of a permanent magnet array staggered by half a pole pitch according to a second embodiment of the present invention.
Fig. 12 is a schematic diagram of a double-coil arrangement of a three-bilateral permanent magnet array on a primary inner side according to an embodiment of the present invention.
Fig. 13 is a schematic diagram of a four-sided permanent magnet array at the bottom of the primary stage according to an embodiment of the present invention.
Fig. 14 is a second schematic diagram of a fourth bilateral permanent magnet array at the bottom of the primary according to the embodiment of the present invention.
Fig. 15 is a schematic diagram of a five-sided permanent magnet array on the inner side of the primary side according to an embodiment of the present invention.
Fig. 16 is a schematic diagram of a six-sided permanent magnet array at the bottom of the primary according to an embodiment of the present invention.
The labels in the figures are: 1. the magnetic force flux generator comprises a primary yoke, 2, a sliding groove, 3, a permanent magnet array, 4, a sliding block, 5, a primary protruding portion, 6, a coil, 7, a secondary tooth, 8, a secondary yoke, 9, a first air gap, 10, a second air gap, 11 and a magnetic force line direction.
Detailed Description
The technical solution of the linear generator according to the present invention will be further explained and explained with reference to the drawings and four embodiments.
Example one
A linear electric generator, as shown in figures 1-9, comprising a primary and a secondary; the primary comprises a primary yoke 1, permanent magnet arrays and coils 6, wherein the primary yoke is of a cuboid structure with a U-shaped cross section, a primary convex part 5 is arranged at the center of the bottom, the coils are wound on the convex part to form an annular large coil, two permanent magnet arrays 3 are arranged on two sides of the U-shaped cross section, the permanent magnets in the permanent magnet arrays on each side are N, S poles which are alternately and uniformly arranged, namely, the pole distances among the permanent magnets are the same, the polarities of the permanent magnets on the corresponding positions on the two sides are the same, the permanent magnets on the two sides are symmetrically arranged, and the magnetizing direction of the permanent magnets; the secondary is a plunging finger structure with flat plate ends uniformly toothed, the structure is made of magnetic conductive material, the secondary comprises a secondary yoke 8 and secondary teeth 7, the middle part is the secondary yoke, the two ends of the secondary yoke are secondary teeth, and the tooth pitch tau of the secondary teeth istEqual to the pole pitch τ between permanent magnetspIs a non-zero even multiple of, i.e. τt=2mτp Wherein m is a non-0 natural number; the secondary is arranged between the two rows of permanent magnet arrays and is on the same plane with the permanent magnet arrays, the gap between the secondary yoke and the primary lug boss is a first air gap 9, and the gap between the secondary teeth and the permanent magnet arrays is a second air gap 10; the two U-shaped end surfaces of the upper end of the primary yoke are respectively provided with a sliding chute 2, the secondary yoke is connected with three groups of sliding blocks 4, the sliding blocks are of U-shaped structures, and the two end surfaces of the lower end of each sliding block can slide in the sliding chutes at the upper end of the primary yoke; the secondary teeth at both ends of the secondary yoke are symmetrically arranged.
In the process that the secondary reciprocates under the action of external power, when the magnetic poles of the secondary teeth are aligned with the magnetic poles of the permanent magnets (as shown in figures 1-4), a magnetic circuit passes through the secondary teeth, the secondary yoke, the first air gap, the primary bulge, the primary yoke, the permanent magnets and the second air gap in the transverse direction, and the direction 11 of magnetic lines of force is shown in figure 4; when the secondary tooth crosses the two primary permanent magnets (as shown in fig. 5-7), the magnetic circuit is in the longitudinal direction, and the magnetic field of the two adjacent permanent magnets is formed into a closed loop by the secondary tooth; when the secondary teeth are aligned with the permanent magnet poles (as shown in fig. 8-9) again, the magnetic circuit transversely passes through the primary yoke, the primary bulge, the first air gap, the secondary yoke, the secondary teeth, the second air gap and the permanent magnet due to the opposite polarities of the permanent magnets, and the direction of magnetic lines of force is as shown in fig. 9; the coil generates a current by the change of the magnetic path direction and the magnetic flux.
Example two
A linear generator is disclosed, as shown in fig. 10, different from the first embodiment, the secondary teeth 7 at the corresponding positions of the two ends of the secondary are staggered by half a pole pitch (the pole pitch is labeled in fig. 1, and is the width of a permanent magnet plus the distance between adjacent permanent magnets, and the tooth pitch of the secondary teeth is the width of the secondary teeth plus the distance between adjacent secondary teeth), and as can be seen from fig. 1, the two first secondary teeth at the left and right sides of the front end of a secondary yoke 8 are staggered by half a pole pitch in the length direction of the secondary yoke, and the arrangement can reduce the reluctance wave power to the minimum. The magnetic resistance is the electromagnetic force existing between the permanent magnet and the rotor iron core when the winding is not electrified or disconnected, the magnetic resistance is in a rule of approximate sine change in the motion direction, and the positive and negative alternate period is the period of the pole pitch, so that if two rows of secondary tooth spaces exist, half pole pitch is staggered in spatial arrangement, which is equivalent to 180-degree phase staggering of the magnetic resistance, and most of the magnetic resistance are mutually offset. When the secondary teeth at one end are aligned with the permanent magnets, the magnetic circuit is the magnetic circuit in fig. 4, namely, the magnetic circuit passes through the secondary teeth, the secondary yoke, the first air gap 9, the large teeth, the primary yoke 1, the permanent magnets and the second air gap 10 in the transverse direction; meanwhile, as the secondary teeth at the corresponding positions of the two ends of the secondary are staggered by half of the polar distance, the secondary teeth at the other end span two permanent magnets, the magnetic circuit of the secondary teeth is the magnetic circuit in fig. 7, namely the magnetic circuit is in the longitudinal direction, and the magnetic field of the two adjacent permanent magnets is formed into a closed loop by the secondary teeth.
In addition, as shown in fig. 11, half of the pole pitch may also be staggered between the permanent magnets in the corresponding positions in the two rows of permanent magnet arrays 3, that is, half of the pole pitch is staggered between the first permanent magnet in the two rows of permanent magnets at the front end of the primary yoke in the length direction of the primary yoke, when the secondary tooth at one end is aligned with the permanent magnet, the magnetic circuit is the magnetic circuit in fig. 4, that is, the magnetic circuit passes through the secondary tooth, the secondary yoke, the first air gap, the big tooth, the primary yoke, the permanent magnet, and the second air gap in the transverse direction; meanwhile, because the permanent magnets in the two rows of permanent magnet arrays on the primary side are staggered by half of the polar distance, the secondary teeth at the other end span the two permanent magnets, the magnetic circuit of the secondary teeth is the magnetic circuit in fig. 7, namely the magnetic circuit is in the longitudinal direction, and the magnetic field of the two adjacent permanent magnets is formed into a closed loop by the secondary teeth. Such an arrangement can also achieve the effects of the present embodiment.
EXAMPLE III
A linear generator, as shown in FIG. 12, is different from the first embodiment in that two coils are wound on both sides of a primary projection 5 at the bottom of a primary yoke 1, or on both sides of the primary yoke, respectively, and the other is the same as the first embodiment.
In the process that the secondary reciprocates under the action of external power, when the magnetic poles of the secondary teeth 7 are aligned with the magnetic poles of the permanent magnets, a magnetic circuit passes through the secondary teeth, the secondary yoke 8, the first air gap 9, the primary lug boss, the primary yoke, the permanent magnets and the second air gap 10 in the transverse direction; when the secondary teeth cross the two primary permanent magnets, the magnetic circuit is in the longitudinal direction, and the magnetic fields of the two adjacent permanent magnets form a closed loop by the secondary teeth; when the secondary teeth are aligned with the magnetic poles of the permanent magnets again, the magnetic circuit transversely passes through the primary yoke, the primary lug boss, the first air gap, the secondary yoke, the secondary teeth, the second air gap and the permanent magnets due to the fact that the polarities of the permanent magnets are opposite; the current is generated in the two coils wound on the bottom or the side of the primary yoke by the change of the magnetic path direction and the magnetic flux.
Example four
A linear electric generator, as shown in fig. 13(13a, 13b, 13c, 13d), different from the first embodiment, a permanent magnet array 3 is arranged at the bottom of a primary yoke, the permanent magnet charging direction is vertical, the permanent magnet array is located below a secondary tooth, and a second air gap 10 is formed between the secondary tooth 7 and the permanent magnet array below the secondary tooth; a coil 6 is wound on the primary lug boss 5, when the secondary teeth are aligned with the magnetic poles of the permanent magnets in the process of reciprocating motion of the secondary under the action of external power, a magnetic circuit passes through the secondary teeth, the secondary yoke 8, the first air gap 9, the primary lug boss, the primary yoke 1, the permanent magnets and the second air gap in the transverse direction; when the secondary teeth cross the two primary permanent magnets, the magnetic circuit is in the longitudinal direction, and the magnetic fields of the two adjacent permanent magnets form a closed loop by the secondary teeth; when the secondary teeth are aligned with the magnetic poles of the permanent magnets again, the magnetic circuit transversely passes through the primary yoke, the primary lug boss, the first air gap, the secondary yoke, the secondary teeth, the second air gap and the permanent magnets due to the fact that the polarities of the permanent magnets are opposite; the current is generated in one coil wound on the secondary bottom boss or two coils wound on the bottom of the primary yoke and located on both sides of the primary boss by the change of the magnetic path direction and the magnetic flux.
In addition, the generator of this embodiment may further include two coils, as shown in fig. 14, the two coils are respectively wound at the bottom of the primary yoke and located at the two sides of the primary protrusion, and the other two coils are the same as the above, and the principle of generating current is the same as the above, and the advantageous effects of the present invention can be achieved as well.
EXAMPLE five
A linear generator is disclosed, as shown in fig. 15 (15 a, 15b, 15c, 15d, 15 e), a primary yoke 1 is in an L-shaped structure, a primary boss 5 is arranged at the end of a horizontal section of the L-shaped structure, the primary comprises a permanent magnet array 3, the permanent magnet array is arranged at the bottom of the primary yoke close to the vertical section of the L-shaped structure, the magnetizing direction of the permanent magnet array is vertical, a secondary is arranged above the primary boss, a secondary yoke 8 corresponds to the primary boss up and down, a first air gap 9 is arranged between the secondary yoke and the primary boss, one end of the secondary yoke is provided with a secondary tooth, the secondary tooth 7 is arranged opposite to the permanent magnet below the secondary tooth, a second air gap 10 is arranged between the secondary tooth and the permanent magnet below the secondary tooth, and a coil 6 is wound on the primary boss (as shown in fig. 15 d) or the horizontal section of the primary yoke (.
At the moment, three groups of sliding blocks 4 are arranged on the secondary yoke, each group of sliding block comprises an upper sliding block arranged above the secondary yoke and a lower sliding block arranged below the secondary yoke, the upper end face of the primary lug boss is provided with a sliding groove 2, the upper end face of the L-shaped structure vertical section of the primary yoke is also provided with a sliding groove, the upper sliding block above the secondary yoke can move in the sliding groove of the L-shaped structure vertical section of the primary yoke, and the lower sliding block below the secondary yoke can slide in the sliding groove on the upper end face of the primary lug boss; in the process that the secondary performs reciprocating motion under the action of external power, when the magnetic poles of the secondary teeth are aligned with the magnetic poles of the permanent magnets, the magnetic circuit passes through the secondary teeth, the secondary yoke, the first air gap, the primary bulge, the primary yoke, the permanent magnets and the second air gap in the transverse direction; when the secondary teeth cross the two primary permanent magnets, the magnetic circuit is in the longitudinal direction, and the magnetic fields of the two adjacent permanent magnets form a closed loop by the secondary teeth; when the secondary teeth are aligned with the magnetic poles of the permanent magnets again, the magnetic circuit transversely passes through the primary yoke, the primary lug boss, the first air gap, the secondary yoke, the secondary teeth, the second air gap and the permanent magnets due to the fact that the polarities of the permanent magnets are opposite; the current is generated in the coil wound around the primary protrusion or the bottom of the primary yoke by the change of the magnetic path direction and the magnetic flux.
The arrangement of the coil is more flexible, the structure can be optimized during specific design and processing, and the size of the generator is smaller.
EXAMPLE six
A linear generator, as shown in fig. 16, which is different from the fifth embodiment in that: the permanent magnet array 3 is arranged on the inner side surface of the primary yoke 1, the magnetizing direction of the permanent magnet is the horizontal direction, the permanent magnet array is flush with the horizontal direction of the secondary teeth 7, a second air gap 10 is arranged between the secondary teeth and the permanent magnet array, and the coil 6 is wound on the bottom of the primary yoke (as shown in figure 16 a), or on the side surface of the primary yoke (as shown in figure 16 b), or on the primary bulge part 5 (as shown in figure 16 c); the rest is the same as in the fifth embodiment.
In the process that the secondary performs reciprocating motion under the action of external power, when the magnetic poles of the secondary teeth are aligned with the magnetic poles of the permanent magnets, the magnetic circuit passes through the secondary teeth, the secondary yoke, the first air gap 9, the primary bulge, the primary yoke 8, the permanent magnets and the second air gap in the transverse direction; when the secondary teeth cross the two primary permanent magnets, the magnetic circuit is in the longitudinal direction, and the magnetic fields of the two adjacent permanent magnets form a closed loop by the secondary teeth; when the secondary teeth are aligned with the magnetic poles of the permanent magnets again, the magnetic circuit transversely passes through the primary yoke, the primary lug boss, the first air gap, the secondary yoke, the secondary teeth, the second air gap and the permanent magnets due to the fact that the polarities of the permanent magnets are opposite; the current is generated in the coil wound on the bottom of the primary yoke or on the side surface of the primary yoke or on the primary convex part by the change of the magnetic path direction and the magnetic flux.
The above six embodiments are all further illustrative of the technical solution of the present invention, but the present invention is not limited to the above six embodiments, and all embodiments obtained by simple changes within the scope of the claims of the present invention fall within the protection scope of the present invention.
Claims (10)
1. A linear electric generator characterized by: the permanent magnet synchronous motor comprises a primary and a secondary, wherein the primary comprises a primary yoke, a coil and at least one permanent magnet array, poles N, S of the permanent magnets in the permanent magnet array are alternately and uniformly arranged, a primary convex part is arranged on the primary yoke, the coil is sleeved on the primary convex part or the primary yoke, and the permanent magnet array is arranged on the primary yoke; the secondary comprises a secondary yoke and secondary teeth, the secondary teeth are of a flat plate type and uniformly toothed plunging finger-shaped structure, the tooth pitch of the secondary teeth is equal to non-zero even times of the pole pitch of the permanent magnet, and a gap is formed between the secondary yoke and the primary boss and is a first air gap; the permanent magnet array and the secondary teeth are arranged on the same plane or an entire column of permanent magnets are arranged below the secondary teeth, and a gap is formed between the permanent magnet array and the secondary teeth and is a second air gap; the secondary teeth move in a plane, and current is generated in the coil through the magnetic circuit and the change of magnetic flux.
2. A linear electric generator as claimed in claim 1, wherein: the primary yoke is of an L-shaped structure, the primary lug boss is arranged at the end part of the horizontal section of the L-shaped structure, the upper end surface of the vertical section of the L-shaped structure and the upper end surface of the primary lug boss are both provided with sliding grooves, and the primary yoke comprises a row of permanent magnet arrays; the secondary is arranged above the primary lug boss, the secondary yoke corresponds to the primary lug boss, the secondary teeth are arranged on one side of the secondary yoke, at least two groups of sliding blocks are arranged on the secondary, and the two groups of sliding blocks respectively slide in the two sliding grooves.
3. A linear electric generator as claimed in claim 2, wherein: the coil is sleeved on the vertical section of the primary yoke or the bottom of the primary yoke or the primary convex part, the permanent magnet array is arranged on the inner side surface of the upper part of the vertical section, and the permanent magnet array and the secondary teeth are arranged in the same plane above the coil.
4. A linear electric generator as claimed in claim 2, wherein: the coil is sleeved on the bottom of the primary yoke or the primary bulge, and the permanent magnet array is arranged on the bottom surface of the primary yoke below the secondary yoke and is in the same plane with the coil.
5. A linear electric generator as claimed in claim 1, wherein: the primary yoke is of a U-shaped structure, sliding grooves are formed in the upper end faces of the two sides of the primary yoke, the primary protruding portion is arranged on the bottom face of the primary yoke and comprises two permanent magnet arrays, the secondary protruding portion is arranged above the primary protruding portion, the secondary teeth are arranged on the two sides of the secondary yoke, at least two groups of sliding blocks are arranged on the secondary yoke, and the sliding blocks slide in the sliding grooves in the two sides of the primary yoke respectively.
6. A linear electric generator as claimed in claim 5, wherein: the two permanent magnet arrays are respectively arranged on the inner side surfaces of the upper ends of the two sides of the primary yoke and are arranged in the same plane corresponding to the secondary teeth.
7. A linear electric generator as claimed in claim 5, wherein: the coil is sleeved on the primary boss.
8. A linear electric generator as claimed in claim 5, wherein: the primary comprises two coils which are respectively sleeved on two sides of the primary yoke, or the two coils are respectively sleeved on the bottoms of the primary yokes on two sides of the primary lug boss.
9. A linear electric generator as claimed in claim 5, wherein: the two permanent magnet arrays are respectively arranged on two sides of the bottom of the primary yoke, and the coils are sleeved on the convex parts, or the two coils are respectively sleeved on the bottoms of the primary yokes on two sides of the convex parts.
10. A linear electric generator as claimed in claim 5, wherein: and corresponding secondary teeth on two sides of the secondary yoke are staggered by half pitch in the length direction of the secondary yoke, or permanent magnets at corresponding positions of two permanent magnet arrays are staggered by half pole pitch in the length direction of the primary yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810695160.0A CN110661395A (en) | 2018-06-29 | 2018-06-29 | Linear generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810695160.0A CN110661395A (en) | 2018-06-29 | 2018-06-29 | Linear generator |
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|---|---|
| CN110661395A true CN110661395A (en) | 2020-01-07 |
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| CN201810695160.0A Pending CN110661395A (en) | 2018-06-29 | 2018-06-29 | Linear generator |
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| CN (1) | CN110661395A (en) |
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2018
- 2018-06-29 CN CN201810695160.0A patent/CN110661395A/en active Pending
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