Air suspension current loop system and forming method thereof

Abstract

The invention discloses an air suspension current loop system and a forming method thereof, and the system comprises a first LC resonant circuit which is composed of a first inductor L1 and a first capacitor C1 which are connected in parallel; the power driving module is connected with the first LC resonant circuit and is used for providing alternating current for the first LC resonant circuit; one end of the sampling feedback coil Nf is inductively coupled with the first LC resonant circuit, and the other end of the sampling feedback coil Nf is connected with the input end of the power driving module to form positive feedback; the suspension loop is positioned above the first inductor L1, is magnetically coupled with the first inductor L1, and comprises a second inductor L2 and a second capacitor C2 which are connected in parallel or an equivalent stray capacitor so as to realize same-frequency resonance with the first LC resonance loop; according to the invention, a rigid support conductor is not needed, a stable closed current loop can be formed and maintained in a completely suspended state, and the dependence of the traditional technology on a fixed conductor is broken through. Through a visual'air current loop 'phenomenon, the device has a wide application prospect in the fields of wireless energy coupling, magnetic confinement plasma illumination, novel display devices and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless energy transmission and electromagnetic resonance, and in particular to an air-suspended current loop system and a forming method thereof. Background Art

[0002] In the fields of wireless energy transmission, magnetic confinement plasma, and superconducting energy storage, the control and maintenance of closed current loops without wires has always been a hot topic and a difficult problem in research. In existing technologies, the formation and maintenance of current loops usually rely on fixed conductors or high-intensity continuous excitation, which makes it difficult to form a stable closed current loop in a completely suspended state. The main reason is that the static magnetic field alone cannot generate an induced potential, and the energy generated by unidirectional induction is not enough to overcome the power loss in the loop, resulting in the inability to maintain a continuous current. Therefore, there is an urgent need for a system that can achieve a stable air-suspended current loop without a rigid supporting conductor. Summary of the Invention

[0003] The object of the present invention is to provide an air-suspended current loop system and a forming method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions: an air-suspended current loop system and a method for forming the same, comprising:

[0005] A first LC resonant circuit is composed of a first inductor L1 and a first capacitor C1 connected in parallel;

[0006] a power driving module, connected to the first LC resonant circuit, and configured to provide an alternating current to the first LC resonant circuit;

[0007] a sampling feedback coil Nf, one end of which is inductively coupled to the first LC resonant circuit, and the other end of which is connected to the input end of the power driving module to form positive feedback;

[0008] a suspension circuit, located above the first inductor L1 and magnetically coupled thereto, comprising a second inductor L2 and a second capacitor C2 in parallel or an equivalent parasitic capacitor, so as to resonate at the same frequency as the first LC resonant circuit;

[0009] The active resonant circuit is driven by a power device (such as a Class-E MOSFET) and is inductively coupled to the first LC resonant circuit through the sampling coil Nf to form a self-excited positive feedback to maintain the continuous oscillation of the circuit;

[0010] The suspension loop is located axially above the first inductor L1 and is composed of a conductor ring, a plasma ring, or a superconducting ring, forming a second LC resonant loop (parasitic capacitance of L2 and C2 or plasma). The coupling coefficient k between the second loop and the first loop is set to 0.05-0.25, preferably 0.1-0.2, to achieve efficient magnetic coupling. The suspension loop forms a closed current loop in a resonant state and generates a reverse magnetic flux in the first LC resonant loop through a coupled magnetic field.

[0011] Among them, the positive feedback mechanism is that the reverse magnetic field generated by the induced current in the second loop is fed back to the gate of the power device through the sampling coil Nf, so that the total loop gain of the system is greater than 1; when the oscillation amplitude reaches a steady state, a stable air current loop is formed.

[0012] Preferably, the first inductor L1 is a planar spiral coil with an inner diameter of 30-70 mm and 10-30 turns.

[0013] Preferably, the suspension loop is a metal conductor ring, with an adjustable capacitor connected in parallel at the opening to tune to the same frequency as the first LC resonant circuit, and a cross-section greater than 1mm is used. 2 , a metal copper ring with a diameter of 50-60mm, has been verified to have good stability in a laboratory environment, and an adjustable capacitor is connected in parallel at the opening to achieve the same frequency resonance with the active resonant circuit.

[0014] Preferably, the suspension loop is a glass ring filled with inert gas, which forms a closed plasma channel under external RF excitation as a discharge channel, is filled with 1-10 torr Ne / Ar mixed gas, and forms a luminous ring-shaped plasma under external RF excitation, realizing the visualization effect of "suspended halo".

[0015] Preferably, the suspension loop is a closed loop made of superconducting material, which works in a low-temperature environment to reduce resistance and prolong the current maintenance time. It is made of superconducting materials such as NbTi, works in a low-temperature environment of 4K, and uses superconducting properties to reduce resistance and prolong the current maintenance time. Even if the driving power is turned off, the current can still be maintained for a long time.

[0016] Preferably, the coupling coefficient k between the first LC resonant circuit and the suspension circuit is set to 0.05-0.25.

[0017] Preferably, the quality factor Q of the first LC resonant circuit is ≥100.

[0018] Preferably, the power driving module is a Class-E amplifier or a self-excited oscillator, and the operating frequency is 1-30 MHz.

[0019] Preferably, a mechanical bracket for adjusting the height or angle of the suspension loop is further included to optimize the coupling coefficient and phase synchronization.

[0020] An air-suspended current loop system and a method for forming the same, comprising the following steps:

[0021] Step 1, adjusting the first LC resonant circuit to the target frequency;

[0022] Step 2: Place the suspension loop above the first inductor axis to achieve magnetic coupling between the two.

[0023] Step 3: Start the power driving module to establish an alternating magnetic field in the first LC resonant circuit;

[0024] Step 4: Induce current through the suspension circuit and adjust its capacitance or position to make the suspension circuit resonate and synchronize its phase with the first LC resonant circuit;

[0025] Step 5: When the total loop gain of the system is greater than 1, the stable existence of the closed current loop in the air is maintained.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] This invention eliminates the need for rigid supporting conductors and can form and maintain a stable closed current loop while completely suspended, breaking away from the traditional reliance on fixed conductors. By visualizing the "air current loop" phenomenon, it has broad application prospects in wireless energy coupling, magnetically confined plasma lighting, and novel display devices. The use of a high-Q coupled resonant circuit and positive feedback mechanism improves energy transmission efficiency, reduces the need for external excitation power, and achieves stable and continuous operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1 The present invention provides an air-suspended current loop system and a method for forming the same, comprising:

[0031] A first LC resonant circuit is composed of a first inductor L1 and a first capacitor C1 connected in parallel;

[0032] a power driving module, connected to the first LC resonant circuit, and configured to provide an alternating current to the first LC resonant circuit;

[0033] a sampling feedback coil Nf, one end of which is inductively coupled to the first LC resonant circuit, and the other end of which is connected to the input end of the power driving module to form positive feedback;

[0034] a suspension circuit, located above the first inductor L1 and magnetically coupled thereto, comprising a second inductor L2 and a second capacitor C2 in parallel or an equivalent parasitic capacitor, so as to resonate at the same frequency as the first LC resonant circuit;

[0035] The active resonant circuit is driven by a power device (such as a Class-E MOSFET) and is inductively coupled to the first LC resonant circuit through the sampling coil Nf to form a self-excited positive feedback to maintain the continuous oscillation of the circuit;

[0036] The suspension loop is located axially above the first inductor L1 and is composed of a conductor ring, a plasma ring, or a superconducting ring, forming a second LC resonant loop (parasitic capacitance of L2 and C2 or plasma). The coupling coefficient k between the second loop and the first loop is set to 0.05-0.25, preferably 0.1-0.2, to achieve efficient magnetic coupling. The suspension loop forms a closed current loop in a resonant state and generates a reverse magnetic flux in the first LC resonant loop through a coupled magnetic field.

[0037] Among them, the positive feedback mechanism is that the reverse magnetic field generated by the induced current in the second loop is fed back to the gate of the power device through the sampling coil Nf, so that the total loop gain of the system is greater than 1; when the oscillation amplitude reaches a steady state, a stable air current loop is formed.

[0038] The first inductor L1 is a planar spiral coil with an inner diameter of 30-70 mm and 10-30 turns.

[0039] The suspension loop is a metal conductor ring, and an adjustable capacitor is connected in parallel at the opening thereof to tune the loop to the same frequency as the first LC resonant loop.

[0040] The suspension loop is a glass ring filled with inert gas, which forms a closed plasma channel under external RF excitation.

[0041] The suspension loop is a closed loop made of superconducting material that operates in a low-temperature environment to reduce resistance and extend the time the current is maintained.

[0042] The coupling coefficient k between the first LC resonant circuit and the suspension circuit is set to 0.05-0.25.

[0043] The quality factor Q of the first LC resonant tank is ≥100.

[0044] The power drive module is a Class-E amplifier or a self-excited oscillator with an operating frequency of 1-30MHz.

[0045] The invention also includes a mechanical bracket for adjusting the height or angle of the suspension loop to optimize the coupling coefficient and phase synchronization.

[0046] An air-suspended current loop system and a method for forming the same, comprising the following steps:

[0047] Step 1, adjusting the first LC resonant circuit to the target frequency;

[0048] Step 2: Place the suspension loop above the first inductor axis to achieve magnetic coupling between the two.

[0049] Step 3: Start the power driving module to establish an alternating magnetic field in the first LC resonant circuit;

[0050] Step 4: Induce current through the suspension circuit and adjust its capacitance or position to make the suspension circuit resonate and synchronize its phase with the first LC resonant circuit;

[0051] Step 5: When the total loop gain of the system is greater than 1, the stable existence of the closed current loop in the air is maintained.

[0052] Example 1: Metal Ring Example

[0053] Coil Design: A 50mm diameter, 20-turn single-layer planar spiral coil with an inductance of approximately 1μH is used as the first inductor L1. This is matched with an adjustable capacitor C1 of 15pF, resulting in a resonant frequency of approximately 13.56MHz.

[0054] Copper ring design: diameter 60mm, cross section 1mm 2 The copper ring is used as a passive suspension circuit, and a 5-15pF fine-tuning capacitor C2 is soldered at the opening. The resonant frequency of the copper ring is adjusted to be consistent with the active resonant circuit, and the coupling coefficient k≈0.15.

[0055] Drive and feedback: A Class-E MOSFET (V_DD = 12V) is used as the power drive module. The sampling signal from the active resonant circuit is sampled through the sampling coil Nf (2 turns) and fed back to the gate of the MOSFET to achieve self-excited start-up.

[0056] Debugging steps: First, simulate the coupled LC circuit in LTspice software to verify the oscillation conditions. In the actual device, use an oscilloscope and a magnetic field probe to simultaneously measure the voltage and current phases of the active resonant circuit and the passive suspension circuit. By adjusting the height of capacitor C2 or the copper ring, the two phases are synchronized.

[0057] Working status: After the system stabilizes, the induced current in the copper ring can reach several amperes, forming an observable air current loop. The magnetic field generated by it is reversely coupled to the active resonant circuit, maintaining the oscillation of the main circuit and achieving stable energy exchange.

[0058] Example 2: Inert Gas Halo Example

[0059] Based on Example 1, the copper ring was replaced with a glass ring filled with a 1-10 torr Ne / Ar gas mixture. The plasma was ignited by an external microwave. When the RF power reached a threshold, a luminous ring of plasma was visible suspended above the drive coil, forming a "suspended halo" and achieving a visual display effect.

[0060] Example 3: Superconducting Ring Example

[0061] A NbTi superconducting ring is used as a passive suspension circuit and placed in a cryogenic environment at 4K. An initial current is injected into the superconducting ring by varying the magnetic field. The driving power is then turned off. By leveraging the superconducting ring's zero resistance, the current can be maintained for an extended period, significantly extending the duration of the current.

[0062] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air-suspended current loop system and a method for forming the same, characterized by: include: A first LC resonant circuit is composed of a first inductor L1 and a first capacitor C1 connected in parallel; a power driving module, connected to the first LC resonant circuit, and configured to provide an alternating current to the first LC resonant circuit; a sampling feedback coil Nf, one end of which is inductively coupled to the first LC resonant circuit, and the other end of which is connected to the input end of the power driving module to form positive feedback; a suspension circuit, located above the first inductor L1 and magnetically coupled thereto, comprising a second inductor L2 and a second capacitor C2 in parallel or an equivalent parasitic capacitor, so as to resonate at the same frequency as the first LC resonant circuit; The active resonant circuit is driven by a power device and is inductively coupled with the first LC resonant circuit through the sampling coil Nf to form a self-excited positive feedback to maintain the continuous oscillation of the circuit; The suspension loop is located axially above the first inductor L1 and is composed of a conductor ring, a plasma ring, or a superconducting ring to form a second LC resonant loop. The coupling coefficient k between the second loop and the first loop is set to 0.05-0.25, preferably 0.1-0.

2. The suspension loop forms a closed current loop in a resonant state and generates a reverse magnetic flux to the first LC resonant loop through a coupled magnetic field. Among them, the positive feedback mechanism is that the reverse magnetic field generated by the induced current in the second loop is fed back to the gate of the power device through the sampling coil Nf, so that the total loop gain of the system is greater than 1; when the oscillation amplitude reaches a steady state, a stable air current loop is formed.

2. The air-suspended current loop system and the method for forming the same according to claim 1, characterized in that: The first inductor L1 is a planar spiral coil with an inner diameter of 30-70 mm and 10-30 turns.

3. The air-suspended current loop system and the method for forming the same according to claim 1, characterized in that: The suspension loop is a metal conductor ring, and an adjustable capacitor is connected in parallel at the opening to tune to the same frequency as the first LC resonant loop.

4. The air-suspended current loop system and the method for forming the same according to claim 1, characterized in that: The suspension loop is a glass ring filled with inert gas, which forms a closed plasma channel under external RF excitation.

5. The air-suspended current loop system and the method for forming the same according to claim 1, characterized in that: The suspension loop is a closed loop made of superconducting material and operates in a low-temperature environment to reduce resistance and extend current maintenance time.

6. The air-suspended current loop system and the method for forming the same according to claim 1, characterized in that: The coupling coefficient k between the first LC resonant circuit and the suspension circuit is set to 0.05-0.

25.

7. The air-suspended current loop system and the method for forming the same according to claim 1, characterized in that: The quality factor Q of the first LC resonant circuit is ≥100.

8. The air-suspended current loop system and the method for forming the same according to claim 1, characterized in that: The power driving module is a Class-E amplifier or a self-excited oscillator, and the operating frequency is 1-30 MHz.

9. The air-suspended current loop system and the method for forming the same according to claim 1, characterized in that: Also included is a mechanical bracket for adjusting the height or angle of the suspension loop.

10. An air-suspended current loop system and a method for forming the same according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1, adjusting the first LC resonant circuit to the target frequency; Step 2: Place the suspension loop above the first inductor axis to achieve magnetic coupling between the two. Step 3: Start the power driving module to establish an alternating magnetic field in the first LC resonant circuit; Step 4: Induce current through the suspension circuit and adjust its capacitance or position to make the suspension circuit resonate and synchronize its phase with the first LC resonant circuit; Step 5: When the total loop gain of the system is greater than 1, the stable existence of the closed current loop in the air is maintained.

Images