Rotation angle adaptive impedance matching method based on four-coil wireless power transmission system

A wireless power transmission and rotation angle technology, applied in electrical components, circuit devices, special data processing applications, etc., can solve problems such as low transmission efficiency and difficulty in optimal load matching

Pending Publication Date: 2022-03-01
GUANGXI POWER GRID CO LIUZHOU POWER SUPPLY BUREAU
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  • Application Information

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Problems solved by technology

For the two-coil structure, there is only one relative positional relationship, which is difficult to use for optimal load matching. Only by adjusting the relative position between the coils, that is, the relative distance, can achieve impedance matching, thereby achieving optimal efficiency output. , but the transmission efficiency is not high

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  • Rotation angle adaptive impedance matching method based on four-coil wireless power transmission system
  • Rotation angle adaptive impedance matching method based on four-coil wireless power transmission system
  • Rotation angle adaptive impedance matching method based on four-coil wireless power transmission system

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Embodiment Construction

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0049] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.

[0050] It should also be understood that the terminology used in th...

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Abstract

The invention belongs to the technical field of wireless power transmission, and particularly relates to a four-coil wireless power transmission system-based rotation angle adaptive impedance matching method, which comprises the following steps of: determining distances among a driving coil, a transmitting coil, a receiving coil and a load coil, and establishing a four-coil wireless power transmission system model; calculating the transmission efficiency of the four-coil wireless power transmission system model; and adjusting the angle between the transmitting coil and the receiving coil until the transmitting efficiency at the corresponding distance reaches the maximum. The impedance matching of the system is flexibly realized only by adjusting the angle. The correctness of the method is further verified through simulation analysis and experimental result analysis. By changing the transmission distance and changing the angle between the receiving coil and the load coil under different transmission distances, the transmission efficiency of the system becomes a substitute and can reach 11% to the maximum, and the scientificity and practicability of the method are fully verified.

Description

technical field [0001] The invention belongs to the technical field of wireless power transmission, in particular to a rotation angle adaptive impedance matching method based on a four-coil wireless power transmission system. Background technique [0002] Traditional power transmission adopts a wired method to realize the transmission of electric energy, that is, to use metal conductive transmission media such as cables to connect the power supply and electrical equipment. Although this transmission method is relatively simple in structure, easy to implement, and mature in development, but At the same time, it also has some inevitable problems, such as line aging, deformation, and sparks generated by tip discharge. In response to the above-mentioned problems, people are constantly exploring to find new solutions. Wireless Power Transmission (WPT) technology has entered people's minds. In 2007, scientists from the Massachusetts Institute of Technology successfully achieved a ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12H02J50/50H02J50/90G06F30/17G06F30/20
CPCH02J50/12H02J50/502H02J50/90G06F30/17G06F30/20
Inventor 欧阳进陈冠霖陈炜智肖静魏菱陆振华史超覃汉宇
Owner GUANGXI POWER GRID CO LIUZHOU POWER SUPPLY BUREAU
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