CN115912739A - Single-phase permanent magnet microminiature generator - Google Patents
Single-phase permanent magnet microminiature generator Download PDFInfo
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- CN115912739A CN115912739A CN202211512770.5A CN202211512770A CN115912739A CN 115912739 A CN115912739 A CN 115912739A CN 202211512770 A CN202211512770 A CN 202211512770A CN 115912739 A CN115912739 A CN 115912739A
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- 230000005291 magnetic effect Effects 0.000 claims abstract description 70
- 238000004804 winding Methods 0.000 claims abstract description 65
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 11
- 230000005405 multipole Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000003302 ferromagnetic material Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 22
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010248 power generation Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
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- 238000010835 comparative analysis Methods 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920006351 engineering plastic Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010618 wire wrap Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses a single-phase permanent magnet micro-generator in brief from the basic principle of the micro-generator to the structural design, then to the links of the parts manufacturing process and the assembly of the whole machine, and after comparative analysis, the scheme of the single-phase permanent magnet micro-generator without iron core is optimized, and the concept and the special structural form that the number of the stator winding wire packages is equal to the number of the rotor magnetic steel blocks are explained, and the invention has the advantages that the output voltage during the breeze power generation can be improved by times, and the structure of the rectifier circuit can be simplified. The design of a coreless structure is optimized, so that the inherent tooth space effect between the motor iron core and the magnetic steel body is fundamentally overcome, breeze power generation becomes possible to improve wind power benefits, the weight of the generator is greatly reduced, the use amount of main raw materials is saved, the manufacturing process is simplified and optimized, the comprehensive cost of the breeze generator is effectively reduced, and the breeze generator is beneficial to promoting the development of the wind power generation industry in the field of green energy.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a microminiature generator, in particular to a single-phase permanent magnet microminiature generator. The discussion relates to mechanical structures, electromagnetic parts, materials such as metal and engineering plastics, and also relates to manufacturing of various parts, assembling processes of motors and the like.
[ background of the invention ]
Many micro permanent magnet generators use non-oriented silicon steel sheets to form stator winding skeleton discs through processes of stamping, lamination and the like, and the silicon steel sheets form motor 'iron cores'. The electrical characteristics of the stator are determined by a three-phase winding structure, the lead wires are respectively wound on corresponding coil brackets on an iron core stator framework to form three-phase windings, the windings are connected in a star or triangle mode, the end outgoing lines are connected to an external circuit, and alternating current electric energy converted from rotating mechanical energy by a generator is obtained, or pulsating direct current electric energy is obtained through a rectification circuit.
The distribution of the dynamic magnetic field in the motor can be effectively optimized by utilizing the excellent magnetic permeability of the silicon steel sheets. Thereby improving the electromechanical energy conversion efficiency of the generator to a certain extent. However, the introduction of the iron core also introduces 'iron loss', and to reduce the loss of the iron core, a silicon steel sheet with higher quality and 'thinner and better' needs to be adopted, which leads to the increase of the comprehensive cost of the motor manufacturing.
[ summary of the invention ]
In order to solve the problem that the existing generator is heavier and more expensive, and hope to obtain relatively satisfactory generating efficiency and high cost performance of the generator product, the invention adopts a new technical scheme, and the basic technical measures comprise the following steps:
(1) The structure of the stator and the rotor of the generator is changed, and the preferable stator winding coil support plate does not use an iron core;
(2) The structure and the winding scheme of a three-phase winding of the stator are changed, and the overall scheme of a single-phase single-wire even-number multi-pole winding is adopted;
(3) Changing the scheme that the number of the stator winding wire packages is not equal to the number of the magnetic steel blocks, so that the number of the stator winding wire packages and the number of the magnetic steel blocks are equal and both are 2N, wherein N is more than or equal to 1;
(4) The magnetic steel blocks on the rotor disc still follow the following steps: the adjacent magnetic steel blocks are arranged in an arrangement mode with opposite polarities;
(5) And winding all the coils on the stator disc by using a single conducting wire phase by phase in a mode that the winding directions of the adjacent coils are opposite. The wire inlet head and the wire outlet head of the conducting wire are finally adjacent to each other and fixedly connected to the binding post at the edge of the stator disc;
(6) One side of the stator is provided with a high-efficiency magnetic conduction ring to improve the distribution of a dynamic magnetic field in the generator. The magnetic conductive ring is made of oriented silicon steel sheets, is pre-cut into strips with equal width along orientation, and is made into various required shapes through processing technologies such as winding and the like;
(7) The invention relates to a single-phase permanent magnet microminiature generator, which takes the circle center of the longitudinal section of a motor rotating shaft as the center, a stator coil and a rotor magnetic steel block are arranged along the radius direction of the circle center of the longitudinal section, and the single-phase permanent magnet microminiature generator can be divided into two categories of an inner rotor and an outer rotor according to different assembling structures of the stator and the rotor.
In summary, the technical points of the present invention are summarized as follows:
● The coil bracket of the stator winding is manufactured by engineering plastics or other light high-strength materials such as aluminum-magnesium alloy materials, ABS engineering plastics or carbon fiber composite materials and the like instead of using silicon steel sheet iron cores;
● The general scheme of single-phase single-wire even-number multi-pole windings is adopted, the generator windings are wound by only using a single wire, only double wire heads are connected to the outside, compared with a conventional three-phase generator, the single-phase alternating current generator has higher output voltage and is suitable for more common power utilization occasions.
A single-phase permanent magnet microminiature generator is characterized in that: by adopting the overall scheme of single-phase single-wire even-number multi-pole windings, the generator winding is wound by only using a single wire, and only double wire heads are connected to the outside, so that compared with a conventional three-phase generator, the single-phase generator has higher output voltage and is suitable for more common power utilization occasions.
● The number of winding wire packages on a single stator disc is equal to that of the magnetic steel blocks on a single rotor disc, the number of the winding wire packages and the number of the magnetic steel blocks are equal, the number of the winding wire packages and the number of the magnetic steel blocks are both 2N, and N is more than or equal to 1. As a variation, the number of winding wire packets on a single stator disc may not be equal to the number of magnetic steel blocks on a single rotor disc, and the mutual relationship is: one is an odd multiple of the other, provided that both of the above columns are even, such as: the number of winding wire packages on a single stator disc can be odd times, such as 3, 5, 7 times and the like, of the number of the magnetic steel blocks on a single rotor disc, and the other way round;
a single-phase permanent magnet microminiature generator is characterized in that: the number of winding wire packages on a single stator disc is equal to that of the magnetic steel blocks on a single rotor disc, the number of the winding wire packages on the single stator disc and the number of the magnetic steel blocks on the single rotor disc are equal, the number of the winding wire packages on the single stator disc and the number of the magnetic steel blocks on the single rotor disc are both even numbers 2N, and N is more than or equal to 1; if not, the larger number is an odd multiple of the smaller number.
● The adjacent coils of the stator disc winding are arranged at equal intervals, the adjacent magnetic steel blocks on the rotor disc are also arranged at equal intervals, and the central axes of all the coils are completely coincided with the center of the magnetic steel blocks at a certain moment when the assembled generator runs; if the number of the two components is different by a certain odd multiple, the centers of all the few components in the assembled generator can be completely matched with the center of the first component with the odd potential difference in the majority of the components at a certain moment when the assembled generator is operated.
● The stator disc winding adopts a structure of single-phase single-wire even-number multi-pole winding, and the winding rule is as follows: the winding directions of the adjacent wires surrounding the winding package shaft are opposite, so that the electromagnetic polarities of the adjacent packages are opposite. Only a single conducting wire is used for winding, after one coil is wound or part of the number of the coils is wound, the winding direction is reversed, then the next adjacent coil is wound, and all the coils on the stator disc are wound one by one in a connected mode. The last coil is immediately next to the first. The wire inlet head of the first wire coil conductor and the wire outlet head of the last wire coil conductor are finally adjacent to each other and fixedly connected to the wiring terminal on the side of the stator disc.
A single-phase permanent magnet microminiature generator is characterized in that: the stator disc winding adopts a structure of single-phase single-wire even-number multi-pole winding, and the winding rule is as follows: the winding directions of the adjacent coils around the respective coil shafts are opposite; winding by using a single lead, after one coil is wound or part of the coil number is wound, reversing the winding direction and then winding the next adjacent coil, and winding all the coils on the stator disc one by one in a connected manner; the last coil is immediately adjacent to the first coil. The wire inlet head of the first wire wrap and the wire outlet head of the last wire wrap are finally adjacent to each other and fixedly connected to the binding post on the edge of the stator disc.
● The axial center of the longitudinal section of the motor rotating shaft is taken as the circle center, the stator coil and the rotor magnetic steel block are arranged along the radius direction of the circle center of the section, the coils on the stator disc surround to form a whole circle, the magnetic conductive ring made of ferromagnetic materials is arranged in a circular ring-shaped hollow groove which is arranged on one side of the stator disc, far away from the rotor magnetic steel block, close to the bottom of a coil framework in advance, and the magnetic conductive ring is preferably wound by strip-shaped silicon steel sheets.
A single-phase permanent magnet microminiature generator is characterized in that: the axial center of the longitudinal section of the motor rotating shaft is taken as the center of a circle, the stator coil and the rotor magnetic steel block are arranged along the radius direction of the center of the section, the coils on the stator disc surround to form a whole circle, and the magnetic conduction ring made of ferromagnetic materials, preferably the magnetic conduction ring wound by strip-shaped oriented silicon steel sheets, is arranged in a circular ring-shaped hollow groove which is arranged on one side of the stator disc far away from the rotor magnetic steel block and is close to the bottom of a coil frame in advance.
● The magnetic steel blocks installed on the rotor disc rotating at high speed are subjected to huge centrifugal force and huge electromagnetic force during power generation. In order to ensure a long-lasting, safe and reliable operation of the rotor part, the rotor disk is designed here as a cartridge container: the rotor disk main body is divided into an upper half and a lower half, and is like a box (shown in figure 1b 2) for installing magnetic steel blocks and magnetic conductive rings, and a bed is used for installing the magnetic steel blocks, and the polarities of the adjacent magnetic steel blocks are opposite; one side of the magnetic steel blocks which are arranged in the shape of a ring is provided with a ring-shaped groove for installing a magnetic conduction ring. After the installation, the positioning pins are aligned, and the box cover (shown in figures 1c1 and 1c 2) is buckled and then is processed into a whole.
A single-phase permanent magnet microminiature generator is characterized in that: the rotor disc is divided into two halves like a box container, the main half of the rotor disc is provided with magnetic steel blocks and magnetic rings, and the polarities of the adjacent magnetic steel blocks are opposite; one side of the magnetic steel blocks which are arranged in the shape of a ring is provided with a ring-shaped groove for installing a magnetic conductive ring. After the installation, the auxiliary half of the rotor disc, namely the 'box cover', is buckled, and then the rotor disc and the 'box cover' are processed into a whole.
● The generator can generate a large amount of heat when working under high load, so that the temperature of the motor is increased, and the magnetic steel block and the winding are threatened. The 'wind wing' is prefabricated at the proper position of the rotor, and the rotor can push air to move directionally when rotating to form air-cooled airflow, and the air-cooled airflow is self-adaptive: the heavier the load and the faster the rotation speed, the higher the wind speed, and the better the air cooling effect. The energy consumption of the rotor and the wind wing can be increased, and the efficiency of the motor is reduced, so that the size of the wind wing, the windward angle and other structural data are optimally designed by combining practical application.
A single-phase permanent magnet microminiature generator is characterized in that: and wind wings are prefabricated at proper positions of the rotor disc to generate air cooling airflow, so that the temperature of the motor winding and the magnetic steel blocks is favorably reduced.
In summary, the technical scheme of the invention has specific application different from the conventional one, the application of the invention is not limited to the miniature wind driven generator at all, and the application of the invention also has certain reference and reference significance for the medium and large wind driven generator.
[ description of the drawings ]
Fig. 1 contains 5 subfigures: fig. 1a shows a generator stator winding iron core formed by laminating stamped non-oriented silicon steel sheets, and 1 indicates 8 winding supports; the other 4 sub-drawings are buckled to form a rotor disc, wherein (1 b 1) (1 b 2) are the front and back surfaces of the main half of the rotor disc, and (1 c 1) (1 c 2) are the front and back surfaces of the auxiliary half of the rotor disc; 2, the annular groove of the main half of the rotor disc is used for installing a magnetic conduction ring; 3, one of 8 equally spaced vacant positions on the main half of the rotor disc is used for installing one of 8 tile-shaped magnetic steel blocks, and the polarities of the adjacent magnetic steel blocks are opposite during installation; 4, 8 equidistant positioning holes are formed in the main half part of the rotor disc and are used for accurately positioning when the auxiliary half part of the rotor disc is buckled; 5 is a wind wing on the main half of the rotor disc, and the design drawing shows that the front side and the back side are both provided with 8 pairs in total; 6 is a main rotating shaft of the motor, which is fixed on the main half of the rotor disc; 7 is the motor drive gear on the main half of the rotor disc; 8 is an annular groove for installing a magnetic conduction ring on the auxiliary half of the rotor disc; 9, 8 positioning pins are arranged on the additional half of the rotor disc and inserted into the positioning holes of the main half during buckling assembly; and 10 is a fixed mounting position of 8 magnetic steel blocks on the auxiliary half of the rotor disc.
FIG. 2 is a front and back two-half perspective view of the stator plate injection molded, and the 12 ring groove is provided with a magnetic conductive ring; the two halves are fastened to form a complete stator plate frame, 11 refers to 8 coil 'boxes', 13 refers to 8 coil conducting wires 'transition slots', and adjacent coils are arranged to be connected.
Fig. 3 contains two sub-figures, which are perspective views of two sides of an assembled single-phase 8-pole rotor.
Fig. 4 contains two sub-diagrams, which are the exploded views of a single-phase 8-pole rotor assembly from the side up and down views, respectively. 14 is the auxiliary half of the rotor disc, 15 is a magnetic conduction ring, 16 is 8 tile-shaped magnetic steel blocks which are arranged in an equidistant circular ring shape, and 17 is the main half of the rotor disc. The rotor disc assembly is disassembled upwards in an explosion diagram, and the sequence of the assembly process of the parts is as follows: 【1】 Embedding a magnetic ring (2) and a magnetic steel block (3) to align with the auxiliary half of the buckled rotor disc, and packaging without error.
Fig. 5 contains two sub-views, which are perspective views of two sides of an assembled single-phase 6-pole rotor.
Fig. 6 is similar to fig. 4 and includes two sub-diagrams illustrating the exploded view of a single-phase 6-pole rotor assembly from both side up and side down views. Because the principle is the same, the structure is similar, and the marking is not repeated.
[ detailed description ] A
The first embodiment is as follows: single-phase 8-pole disc type generator with iron core
Different from the previous three-phase generator, the generator is a single-phase generator, has high output voltage and is characterized in that: the number of the rotor magnetic steel blocks and the number of stator winding coils are equal and are 8, the stator core is shown in figure 1 (1 a), the main half of the rotor disc is shown in figures 1 (1 b1 and 1b 2), and the (1 c1 and 1c 2) are the auxiliary half of the rotor disc, namely a rotor disc cover, and are buckled on the main half to ensure the firmness of the magnetic steel. The 'wind wing' on the main half of the rotor disc drives air to be cooled, and the wind speed is adjusted in a self-adaptive mode along with the rotating speed/the generated energy. The iron core is stamped by a single steel film, so that the labor is saved for a die, but the corner of the winding support is sharp, and an insulating film strip needs to be wound to ensure that the insulating skin of the lead is not cut; if the longitudinal section of the iron core winding support is approximately round or ultra-round, the shape of the silicon steel sheet needs to be gradually changed, and the cost is increased. If the iron core is arranged, the motor is heavier and has iron loss.
Example two: single-phase 8-pole disc type generator without iron core
The ABS plastic stator disk shown in FIG. 2 is divided into two halves as shown in FIGS. 2a (2 b). The magnetic conductive ring is arranged in an annular groove 12 in the figure (2 b), 8 coils are arranged in an empty box 11, attention is paid to that the winding directions of the adjacent coils are opposite, a connecting line between the coils passes through a gap 13, the two halves can be buckled without errors in installation, and joints are welded by ultrasonic waves; fig. 3 is a rotor disk assembly, and fig. 4 is an exploded view thereof. Due to the compatibility of the structure, the rotor structure is still as listed in the first embodiment, and the comparison shows that: the indexes of output power, voltage, current and the like are generally equivalent, but an iron core is not used, the weight is reduced by more than 35 percent, the processing technology is simplified, and the comprehensive cost is reduced by about 20 percent.
Example three: coreless single-phase 6-pole disc type generator
As shown in fig. 5 and 6, the coreless single-phase 6-pole disc generator is similar to the second embodiment in principle and structure, and will not be described in detail. It should be noted that: in the embodiment, the position duty ratio of the stator coil and the rotor magnetic steel which are arranged in a circular ring shape is 50%, so that the generated output voltage/current presents quite beautiful sine waves, and the characteristic may be applied to a certain field, such as analog frequency conversion application instead of digital frequency conversion application.
Claims (6)
1. A single-phase permanent magnet microminiature generator is characterized in that: the general scheme of single-phase single-wire even-number multi-pole windings is adopted, the generator windings are wound by only using a single wire, only double wire ends are needed to be connected with the outside, and compared with a conventional three-phase generator, the single-phase generator has higher output voltage and is suitable for more common power utilization occasions.
2. The miniature generator of claim 1, wherein the miniature generator comprises: the number of winding wire packages on a single stator disc is equal to that of the magnetic steel blocks on a single rotor disc, the number of the winding wire packages on the single stator disc is equal to that of the magnetic steel blocks on the single rotor disc, the number of the winding wire packages on the single stator disc is even 2N, and N is more than or equal to 1; if not, the larger number is an odd multiple of the smaller number.
3. The miniature generator of claim 1, wherein: the stator disc winding adopts a structure of single-phase single-wire even-number multi-pole winding, and the winding rule is as follows: the winding directions of the adjacent coils around the respective coil shafts are opposite; winding by using a single lead, after one coil is wound or part of the coil number is wound, reversing the winding direction and then winding the next adjacent coil, and winding all the coils on the stator disc one by one in a connected manner; the last coil is immediately adjacent to the first coil. The wire inlet head of the first wire coil conductor and the wire outlet head of the last wire coil conductor are finally adjacent to each other and fixedly connected to the wiring terminal on the side of the stator disc.
4. The miniature generator of claim 1, wherein the miniature generator comprises: the axial center of the longitudinal section of the motor rotating shaft is taken as the center of a circle, the stator coil and the rotor magnetic steel block are arranged along the radius direction of the center of the section, the coils on the stator disc surround to form a whole circle, and the magnetic conduction ring made of ferromagnetic materials, preferably the magnetic conduction ring wound by strip-shaped oriented silicon steel sheets, is arranged in a circular ring-shaped hollow groove which is arranged on one side of the stator disc far away from the rotor magnetic steel block and is close to the bottom of a coil frame in advance.
5. The miniature generator of claim 1, wherein: the rotor disc is divided into two halves like a box container, the main half of the rotor disc is provided with magnetic steel blocks and magnetic rings, and the polarities of the adjacent magnetic steel blocks are opposite; one side of the magnetic steel blocks which are arranged in the shape of a ring is provided with a ring-shaped groove for installing a magnetic conductive ring. After the installation, the auxiliary half of the rotor disc, namely the 'box cover', is buckled, and then the rotor disc and the 'box cover' are processed into a whole.
6. The miniature generator of claim 1, wherein the miniature generator comprises: and wind wings are prefabricated at proper positions of the rotor disc to generate wind cooling airflow, so that the temperature of a motor winding and a magnetic steel block is favorably reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211512770.5A CN115912739A (en) | 2022-11-25 | 2022-11-25 | Single-phase permanent magnet microminiature generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211512770.5A CN115912739A (en) | 2022-11-25 | 2022-11-25 | Single-phase permanent magnet microminiature generator |
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| Publication Number | Publication Date |
|---|---|
| CN115912739A true CN115912739A (en) | 2023-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211512770.5A Pending CN115912739A (en) | 2022-11-25 | 2022-11-25 | Single-phase permanent magnet microminiature generator |
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| Country | Link |
|---|---|
| CN (1) | CN115912739A (en) |
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2022
- 2022-11-25 CN CN202211512770.5A patent/CN115912739A/en active Pending
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