CN111554494A - Rotary magnetic coupling transformer based on magnetic integration - Google Patents
Rotary magnetic coupling transformer based on magnetic integration Download PDFInfo
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- CN111554494A CN111554494A CN202010355234.3A CN202010355234A CN111554494A CN 111554494 A CN111554494 A CN 111554494A CN 202010355234 A CN202010355234 A CN 202010355234A CN 111554494 A CN111554494 A CN 111554494A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/18—Rotary transformers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/3353—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0064—Magnetic structures combining different functions, e.g. storage, filtering or transformation
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses a rotary magnetic coupling transformer based on magnetic integration, which comprises a fixed component and a rotary component, wherein the fixed component is arranged on the rotary component; the rotating assembly comprises a rotating magnetic core, a rotating inductance winding and a rotating power winding; the longitudinal section of the rotary magnetic core is in a flat dry shape, wherein a rotary inductance winding and a rotary power winding are wound; the fixed component is coaxially sleeved on the periphery of the rotating component, and a radial gap with a set distance is formed between the fixed component and the rotating component; the fixed assembly comprises a fixed iron core, a fixed inductance winding and a fixed power winding; the longitudinal section of the fixed iron core is in a flat F shape, wherein a fixed inductance winding and a fixed power winding are wound; the fixed power winding is connected with the fixed inductance winding in series, and the rotary power winding is connected with the rotary inductance winding in series. The invention adopts the magnetic integration technology, so that the inductor and the transformer share the same iron core, the utilization rate of the magnetic material is improved, and the volume of a magnetic element is reduced; the electric brush can be applied to a wireless power supply system of a rotating device, and the safety problem caused by the traditional electric brush is solved.
Description
Technical Field
The invention relates to the technical field of electromagnetism, in particular to a rotary magnetic coupling transformer based on magnetic integration.
Background
The transformer is always an important component in a power system, and along with the development of electromagnetic technology, a rotary magnetic coupling transformer applied to a non-contact electric energy transmission system is produced, the primary side and the secondary side of the transformer are completely separated, and the energy coupling without physical connection of the primary side and the secondary side is realized through a high-frequency magnetic field. The rotary magnetic coupling transformer is applied to non-contact energy transmission, can solve the problems of contact loss, mechanical abrasion and the like caused by the traditional energy transmission technology, and enables an energy transmission system to be safer.
An effective method for improving transmission efficiency and dynamic performance of a high-frequency rotary magnetic coupling transformer is to connect an independent inductor in series on each side of the transformer. Compared with a static rotary magnetic coupling transformer or a planar rotary magnetic coupling transformer, the rotary magnetic coupling transformer needs to be in a rotating state on one side of the rotor all the time, and the independent arrangement of the series inductors not only increases the volume of the equipment, but also makes the design on the side of the rotor more difficult.
At present, no technical scheme for realizing series inductance in a magnetic integration mode exists in a rotary magnetic coupling transformer; the difficulty of setting up such technical scheme lies in, series inductance and rotatory magnetic coupling transformer need not the circuit process mutual independence in the operation process, and the mutual coupling of magnetic circuit process again realizes the multiplexing of magnetic circuit structure, improves the magnetic circuit and utilizes efficiency, reduces the equipment volume, reduces the processing degree of difficulty simultaneously.
Rotary magnetically coupled transformers are commonly used in special applications, such as in the transfer of electrical energy between devices that are in relative motion. In such special occasions, the structure of the rotary magnetic coupling transformer is not easy to be overlarge, so that the rotary magnetic coupling transformer needs to have the frequency and the power density as high as possible.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a rotary magnetic coupling transformer based on magnetic integration, which adopts the magnetic integration technology to make the inductor and the transformer share the same iron core, thereby improving the utilization rate of magnetic materials and reducing the volume of magnetic elements; therefore, the electric brush can be applied to a wireless power supply system of a rotating device, and the safety problem caused by the traditional electric brush is solved.
In order to solve the technical problems, the invention adopts the technical scheme that:
a rotary magnetic coupling transformer based on magnetic integration comprises a fixed component and a rotary component.
The rotating assembly includes a rotating magnetic core, a rotating inductive winding, and a rotating power winding.
The longitudinal section of the rotary magnetic core is in a flat lying 'dry' shape and comprises a central shaft, a first radial rotary circular ring and a second radial rotary circular ring, wherein the first radial rotary circular ring and the second radial rotary circular ring are coaxially and fixedly sleeved at one end of the central shaft. A rotary inductance winding cavity is formed between the first radial rotary ring and the second radial rotary ring, and a rotary inductance winding is wound in the rotary inductance winding cavity.
The fixed component is coaxially sleeved on the periphery of the rotating component, and a radial gap with a set distance a is formed between the fixed component and the rotating component.
The fixed assembly comprises a fixed iron core, a fixed inductance winding and a fixed power winding.
The longitudinal section of the fixed iron core is in a flat F shape and comprises an outer ring cylindrical surface, and a first radial fixed circular ring and a second radial fixed circular ring which are arranged on the inner wall surface of the outer ring cylindrical surface. The first radial fixed ring and the second radial fixed ring are coaxially sleeved on the periphery of the other end of the central shaft, and radial gaps between the first radial fixed ring and the central shaft are set distances a. A fixed inductance winding cavity is formed between the first radial fixed circular ring and the second radial fixed circular ring, and a fixed inductance winding is wound in the fixed inductance winding cavity.
The second radial fixed circular ring and the second radial rotating circular ring are adjacent to each other, a power winding cavity is formed between the second radial fixed circular ring and the second radial rotating circular ring, and the fixed power winding and the rotating power winding are wound in the power winding cavity.
The fixed power winding and the fixed inductance winding are connected in series to form a fixed circuit, and the rotary power winding and the rotary inductance winding are connected in series to form a rotary circuit.
The fixed circuit is also connected with a resonance capacitor C1 in series, and the rotating circuit is also connected with a resonance capacitor C2 in series.
In the fixed circuit, a fixed inductance winding is connected in series with a resonant capacitor C1 to form a fixed side resonant tank, and then connected in series with a fixed power winding. Wherein the fixed inductor winding participates in resonance. In the rotating circuit, the rotating inductance winding is connected in series with the resonant capacitor C2 to form a rotating side resonant tank, and then connected in series with the rotating power winding. Wherein the rotating inductive winding participates in resonance.
The fixed power winding is wound on a second radial fixed circular ring positioned in the power winding cavity, the rotating power winding is wound on a second radial rotating circular ring positioned in the power winding cavity, and the fixed power winding and the rotating power winding are axially arranged oppositely.
The fixed power winding is wound on the inner wall surface of an outer ring cylindrical surface in the power winding cavity, the rotary power winding is wound on the outer wall surface of a central shaft in the power winding cavity, and the fixed power winding and the rotary power winding are arranged in a radial direction in an opposite mode.
The fixed magnetic core and the rotary magnetic core are made of ferrite materials or nano-gold materials. And the windings of the fixed inductance winding, the fixed power winding, the rotary inductance winding and the rotary power winding are all copper wires or litz wires.
The invention has the following beneficial effects:
1. the invention adopts the magnetic integration technology, so that the inductor and the transformer share the same iron core, the utilization rate of magnetic materials is improved, the volume of magnetic elements is reduced, the number of elements applied to a circuit is reduced, and the power density of the power electronic converter is improved. Therefore, the electric brush can be applied to a wireless power supply system of a rotating device, and the safety problem caused by the traditional electric brush is solved.
2. The transformer can replace a motor brush and a slip ring and is applied to a motor rotor electric energy transmission system, the application of the transformer can overcome the safety and operation and maintenance problems brought by the motor brush, and the safety and reliability of the motor operation are improved. The magnetic integrated structure is applied to the rotary magnetic coupling transformer, so that the utilization rate of magnetic materials of the transformer can be increased, the power density of devices can be increased, and the volume of the rotary magnetic coupling transformer can be reduced, so that the rotary magnetic coupling transformer can be applied to more occasions, and the application environment of the rotary magnetic coupling transformer is expanded.
Drawings
Fig. 1 shows a schematic structural diagram of a rotating magnetic coupling transformer based on magnetic integration according to the present invention in embodiment 1.
Fig. 2 shows a schematic structural diagram of a rotating magnetic-coupled transformer based on magnetic integration according to the present invention in embodiment 2.
Fig. 3 shows a circuit diagram of a rotating magnetic coupling transformer based on magnetic integration according to the invention.
Among them are:
1. a fixing assembly;
11. fixing the iron core; 12. fixing an inductance winding; 13. a fixed power winding;
2. a rotating assembly;
21. rotating the iron core; 22. rotating the inductor winding; 23. rotating the power winding.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
In the description of the present invention, it is to be understood that the terms "left side", "right side", "upper part", "lower part", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and that "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection of the present invention.
Example 1
As shown in fig. 1 and 3, a rotary magnetic coupling transformer based on magnetic integration includes a fixed component 1 and a rotating component 2.
The rotating assembly is preferably fixed to the rotating device for synchronous rotation therewith and includes a rotating magnetic core 21, a rotating inductor winding 22 and a rotating power winding 23.
The longitudinal section of the rotary magnetic core is in a flat dry shape and comprises a central shaft 211, a first radial rotary ring 212 and a second radial rotary ring 213 which are coaxially and fixedly sleeved at one end of the central shaft. A rotary inductance winding cavity is formed between the first radial rotary ring and the second radial rotary ring, and a rotary inductance winding is wound in the rotary inductance winding cavity.
The fixed component is preferably fixed through an external bracket, and the fixed component is coaxially sleeved on the periphery of the rotating component with a radial gap with a set distance a between the fixed component and the rotating component. There is no physical contact between the stationary and rotating components and a fixed radial gap a is maintained through which electromagnetic coupling occurs, thereby maintaining a substantially constant magnetic circuit.
The stationary assembly includes a stationary core 11, a stationary inductive winding 12 and a stationary power winding 13.
The fixed iron core and the rotary iron core are preferably made of ferrite materials or nano-gold materials with good magnetic conductivity; the fixed inductance winding, the fixed power winding, the rotary inductance winding and the rotary power winding all preferably adopt copper wires with higher magnetic permeability or litz wires with better performance.
The longitudinal section of the fixed iron core is in a flat F shape and comprises an outer ring cylindrical surface 111, and a first radial fixed circular ring 112 and a second radial fixed circular ring 113 which are arranged on the inner wall surface of the outer ring cylindrical surface. The first radial fixed ring and the second radial fixed ring are coaxially sleeved on the periphery of the other end of the central shaft, and radial gaps between the first radial fixed ring and the central shaft are set distances a. A fixed inductance winding cavity is formed between the first radial fixed circular ring and the second radial fixed circular ring, and a fixed inductance winding is wound in the fixed inductance winding cavity.
The radial distance between the outer ring wall surfaces of the first radial direction rotation circular ring and the second radial direction rotation circular ring and the inner wall surface of the outer ring cylindrical surface 111 is also a set distance a.
The second radial fixed circular ring and the second radial rotating circular ring are adjacent to each other, a power winding cavity is formed between the second radial fixed circular ring and the second radial rotating circular ring, and the fixed power winding and the rotating power winding are wound in the power winding cavity.
In this embodiment 1, the stationary power winding is wound around a second radial stationary ring located in the power winding cavity, the rotating power winding is wound around a second radial rotating ring located in the power winding cavity, and the stationary power winding and the rotating power winding are axially oppositely disposed to form an adjacent structure as shown in fig. 1.
In the structure, the fixed power winding and the rotating power winding are both in a ring shape in the radial direction, and the structure with radial central symmetry enables the magnetic field density and the electric energy transmission energy not to be influenced when relative rotation motion occurs between the fixed power winding and the rotating power winding. The fixed power winding and the rotating power winding are arranged oppositely, so that the coupling degree of a magnetic field between the two groups of windings is ensured to the maximum degree, and the magnetic leakage is reduced. The current density in the adjacent winding coils is high. The rotating part magnetic core is sleeved in the fixed part magnetic core, so that the radial offset of the rotating power winding during operation can be reduced.
Circuit structure
As shown in fig. 3, a rotary magnetic coupling transformer based on magnetic integration includes a fixed circuit and a rotating circuit.
The fixed circuit comprises a fixed power winding and a fixed inductance winding which are connected in series, and the rotating circuit comprises a rotating power winding and a rotating inductance winding which are connected in series.
When the transformer is practically applied, the fixed inductance winding and the rotary inductance winding can be used as resonance inductors to participate in resonance; therefore, a resonance capacitor C1 is also connected in series to the fixed circuit, and a resonance capacitor C2 is also connected in series to the rotating circuit.
The method specifically comprises the following steps: in the fixed circuit, a fixed inductance winding is connected in series with a resonant capacitor C1 to form a fixed side resonant tank, and then connected in series with a fixed power winding. Wherein the fixed inductor winding participates in resonance. In the rotating circuit, the rotating inductance winding is connected in series with the resonant capacitor C2 to form a rotating side resonant tank, and then connected in series with the rotating power winding. Wherein the rotating inductive winding participates in resonance.
As shown in fig. 3, the fixed circuit loop: after passing through the H1 bridge, the alternating current side of the direct current power supply is sequentially connected with the resonant capacitor C1, the fixed inductance winding and the fixed power winding in series, and then returns to the H1 bridge and the negative pole of the direct current power supply, so that a fixed circuit is formed.
The H1 bridge includes four power switching tubes S11-S14, and the following H2 bridge includes four power switching tubes S21-S24.
The rotating circuit loop is as follows: one end of the rotary power winding is sequentially connected with the rotary inductance winding and the resonance capacitor C2 and then connected with the alternating current side of the H2 bridge; the other end of the rotating power winding is directly connected to the other leg of the H2 bridge. The dc side load of the H2 bridge is a resistor.
This circuit structure is a usage of transformer in this patent, and wherein fixed inductance winding constitutes fixed side resonant network jointly with resonance capacitor C1, and in a similar way, rotatory inductance winding constitutes rotatory side resonant network with resonance capacitor C2, and the addition of resonant network makes the switch tube realize soft switch more easily, has reduced the eddy current loss of transformer, has improved the utilization ratio of electric energy.
Example 2
As shown in fig. 2, the same as embodiment 1, except that the winding position of the power winding is changed, in embodiment 2, the fixed power winding is wound on the inner wall surface of the outer cylindrical surface in the power winding cavity, the rotating power winding is wound on the outer wall surface of the central shaft in the power winding cavity, and the fixed power winding and the rotating power winding are arranged in a radial direction opposite to each other, so as to form a nested structure as shown in fig. 2.
The nested structure is a power winding structure that is common in transformers. The radial direction presents a completely symmetrical structure, so that the magnetic field density does not change when relative operation occurs between the fixed power winding and the rotating power winding, and the transmission efficiency of electric energy is not influenced. Due to the axial nested structure, the magnetic leakage is reduced as small as possible when the transformer generates radial displacement change during operation.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the embodiments, and various equivalent modifications can be made within the technical spirit of the present invention, and the scope of the present invention is also within the scope of the present invention.
Claims (6)
1. A rotary magnetic coupling transformer based on magnetic integration is characterized in that: comprises a fixed component and a rotating component;
the rotating assembly comprises a rotating magnetic core, a rotating inductance winding and a rotating power winding;
the longitudinal section of the rotary magnetic core is in a flat dry shape and comprises a central shaft, a first radial rotary circular ring and a second radial rotary circular ring, wherein the first radial rotary circular ring and the second radial rotary circular ring are coaxially and fixedly sleeved at one end of the central shaft; a rotary inductance winding cavity is formed between the first radial rotary ring and the second radial rotary ring, and a rotary inductance winding is wound in the rotary inductance winding cavity;
the fixed component is coaxially sleeved on the periphery of the rotating component, and a radial gap with a set distance a is formed between the fixed component and the rotating component;
the fixed assembly comprises a fixed iron core, a fixed inductance winding and a fixed power winding;
the longitudinal section of the fixed iron core is in a flat F shape and comprises an outer ring cylindrical surface, a first radial fixed circular ring and a second radial fixed circular ring which are arranged on the inner wall surface of the outer ring cylindrical surface; the first radial fixed ring and the second radial fixed ring are coaxially sleeved on the periphery of the other end of the central shaft, and radial gaps between the first radial fixed ring and the central shaft are set distances a; a fixed inductance winding cavity is formed between the first radial fixed ring and the second radial fixed ring, and a fixed inductance winding is wound in the fixed inductance winding cavity;
the second radial fixed circular ring and the second radial rotating circular ring are adjacent to each other, a power winding cavity is formed between the second radial fixed circular ring and the second radial rotating circular ring, and the fixed power winding and the rotating power winding are wound in the power winding cavity;
the fixed power winding and the fixed inductance winding are connected in series to form a fixed circuit, and the rotary power winding and the rotary inductance winding are connected in series to form a rotary circuit.
2. A rotary magnetic-coupling transformer based on magnetic integration according to claim 1, characterized in that: the fixed circuit is also connected with a resonance capacitor C1 in series, and the rotating circuit is also connected with a resonance capacitor C2 in series.
3. A rotary magnetic-coupling transformer based on magnetic integration according to claim 2, characterized in that: in the fixed circuit, a fixed inductance winding is connected with a resonance capacitor C1 in series to form a fixed side resonance groove, and then is connected with a fixed power winding in series; wherein the fixed inductor winding participates in resonance; in a rotating circuit, a rotating inductance winding is connected with a resonant capacitor C2 in series to form a rotating side resonant tank, and then is connected with a rotating power winding in series; wherein the rotating inductive winding participates in resonance.
4. A rotary magnetic-coupling transformer based on magnetic integration according to claim 1, characterized in that: the fixed power winding is wound on a second radial fixed circular ring positioned in the power winding cavity, the rotating power winding is wound on a second radial rotating circular ring positioned in the power winding cavity, and the fixed power winding and the rotating power winding are axially arranged oppositely.
5. A rotary magnetic-coupling transformer based on magnetic integration according to claim 1, characterized in that: the fixed power winding is wound on the inner wall surface of an outer ring cylindrical surface in the power winding cavity, the rotary power winding is wound on the outer wall surface of a central shaft in the power winding cavity, and the fixed power winding and the rotary power winding are arranged in a radial direction in an opposite mode.
6. A rotary magnetic-coupling transformer based on magnetic integration according to claim 1, characterized in that: the fixed magnetic core and the rotary magnetic core are made of ferrite materials or nano-gold materials; and the windings of the fixed inductance winding, the fixed power winding, the rotary inductance winding and the rotary power winding are all copper wires or litz wires.
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| CN202010355234.3A CN111554494B (en) | 2020-04-29 | 2020-04-29 | Rotary magnetic coupling transformer based on magnetic integration |
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| CN202010355234.3A CN111554494B (en) | 2020-04-29 | 2020-04-29 | Rotary magnetic coupling transformer based on magnetic integration |
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| GB699319A (en) * | 1951-08-29 | 1953-11-04 | Arc Mfg Company Ltd | Improvements in or relating to electrical transformers |
| US20060022785A1 (en) * | 2003-02-26 | 2006-02-02 | Analogic Corporation | Power coupling device |
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| CN109787478A (en) * | 2017-11-10 | 2019-05-21 | 乐金电子研发中心(上海)有限公司 | A kind of magnetic integration apparatus based on CLLC circuit |
| CN109767902A (en) * | 2019-01-29 | 2019-05-17 | 河海大学 | A kind of high-power high-frequency rotating electric electronic transformer |
| CN110444391A (en) * | 2019-08-14 | 2019-11-12 | 深圳可立克科技股份有限公司 | A kind of winding method of integrated-type magnetic elements winding |
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