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Integrated inductive coupling mechanism based on LCC energy transmission topology

A technology that integrates inductors and coupling mechanisms. It is applied in the direction of inductors, transformer/inductor cores, and transformer/inductor components. It can solve the problems of large inductors and insufficient space for placing circuit boards, and achieve outward The effect of less radiation, high utilization rate of magnetic field, and strong ability

Active Publication Date: 2022-01-14
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the small space in the well and the large size of the inductor in the LCC topology, the groove on the shaft does not have enough space for the circuit board

Method used

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  • Integrated inductive coupling mechanism based on LCC energy transmission topology
  • Integrated inductive coupling mechanism based on LCC energy transmission topology
  • Integrated inductive coupling mechanism based on LCC energy transmission topology

Examples

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Embodiment 1

[0036] As a preferred embodiment of the present invention, with reference to the attached figure 2 , image 3 , Figure 6 and Figure 7 As shown, this embodiment discloses an integrated inductive coupling mechanism based on the LCC energy transmission topology. The power coupling mechanism in the WPT system, due to the large current on the primary side of the system and the high-order harmonics generated by the inverter switch in the primary side circuit, will generate a large power magnetic field in the middle area of ​​the coupling mechanism, which will bring extremes to the system. big distraction. Since the built-up power transmission magnetic coupling mechanism adopts a disk-shaped or square structure symmetrical winding method, in order to reduce the interference to the system. A DD coil structure is proposed, and the schematic diagram of the winding method of the DD coil structure is shown in figure 2 As shown, wind a rectangle counterclockwise from the starting...

Embodiment 2

[0040] As another preferred embodiment of the present invention, with reference to the attached Figure 4 and Figure 6 As shown, this embodiment provides a wireless power transmission system, which includes an input DC power supply, a high-frequency inverter, a coupling mechanism and a compensation network, a rectifier filter and a load, and the wireless charging system from DC input to a DC battery is mainly composed of an inverter It consists of three parts: transformer, rectifier and coil with compensation network. The power consumption of the wireless charging system also comes from these three parts. SiC MOSFETs are used for the inverter and diodes are used for the rectifier. Due to the realization of zero-voltage switching during inversion, most of the power loss in the inverter and rectifier is the conduction loss of MOSFET and diode, and the loss is about 31W in a 3.0kW wireless charging system. This will result in a 1% drop in system efficiency. Therefore, most o...

Embodiment 3

[0050] As another preferred embodiment of the present invention, with reference to the attached Figure 7 , this example discloses:

[0051] The integrated inductive coupling mechanism based on the LCC energy transmission topology includes two parts: a transmitting end and a receiving end. The transmitting end includes an outer cylinder magnetic core 1, a transmitting coil layer 2 and a transmitting inductive coil layer 3; The magnetic core 4, the receiving coil layer 5 and the receiving inductance coil layer 6; the outer cylinder magnetic core 1 is sleeved outside the inner cylinder magnetic core 4, and the outer cylinder magnetic core 1 and the inner cylinder magnetic core 4 are coaxial; The inner wall of the core 1 is provided with a groove I for winding the transmitting coil layer 2 and the transmitting inductive coil layer 3, and the outer wall of the inner cylinder magnetic core 4 is provided with a groove for winding the receiving coil layer 5 and the receiving inductiv...

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Abstract

The invention discloses an integrated inductive coupling mechanism based on LCC energy transmission topology, which relates to the technical field of wireless electric energy transmission in the field of petroleum drilling. The coupling mechanism comprises a transmitting end and a receiving end, and inductors with large sizes in the transmitting end and the receiving end are wound into DD type structures and placed above coils. According to the integrated inductive coupling mechanism, the wireless charging system is more compact in structure and simpler in design, due to the structural characteristics of the DD type coils, the influence between the two coils is very small in the energy transmission process, in terms of transmission power and efficiency, the DD type coils are higher in anti-sidesway capacity, good in coupling degree and small in outward radiation quantity, the magnetic field utilization rate is high, the capacity is higher, and the mechanism is suitable for high-speed rotating underground space.

Description

technical field [0001] The present invention relates to the field of oil drilling, in particular to the technical field of wireless power transmission in the field of oil drilling, and more specifically to an integrated inductive coupling mechanism based on LCC energy transmission topology. Background technique [0002] In traditional wireless power transmission systems, according to the different connection methods of coils and capacitors, the compensation network has four basic topological structures, namely, series-series (SS), series-parallel (SP), parallel-series (PS) and parallel - and (PP). The four basic compensation topologies inevitably have certain limitations in the wireless power transfer system, and in practical applications, the topology will have different requirements in different situations, which has a high comprehensive performance on the compensation topology of the WPT system. requirements. [0003] Aiming at the problems existing in the traditional t...

Claims

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Application Information

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IPC IPC(8): H02J50/10H02J50/12H02J50/70H01F38/14H01F27/24H01F27/28H01F27/30
CPCH02J50/10H02J50/12H02J50/70H01F38/14H01F27/24H01F27/28H01F27/306Y02T10/7072Y02T10/70Y02T90/14
Inventor 李雷陆灯云白璟张继川韩烈祥邓虎李伟成黄崇君范黎明周长虹姚建林刘伟
Owner BC P INC CHINA NAT PETROLEUM CORP
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