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A parameter design method of square coupler with rounded corners in ipt system

A rounded, square, parametric design technology, applied in design optimization/simulation, special data processing applications, geometric CAD, etc., can solve the problem of no optimal structural parameter design method, etc., to improve power transmission efficiency and improve coupling characteristics Effect

Active Publication Date: 2022-04-08
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are currently few methods for the parametric design of rounded square couplers, and there is no method for the optimal structural parameter design

Method used

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  • A parameter design method of square coupler with rounded corners in ipt system
  • A parameter design method of square coupler with rounded corners in ipt system
  • A parameter design method of square coupler with rounded corners in ipt system

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Effect test

Embodiment

[0062] figure 2 It is a schematic structural diagram of a square coupler with rounded corners in an embodiment of the present invention. The square coupler with rounded corners includes two parts: a primary side power transmitting coil and a secondary side power pickup coil. In addition, the spatial positions of the primary side power transmitting coil and the secondary side power pickup coil are opposite and parallel, and both are planar coils wound from outside to inside using Litz wire with a wire diameter of d;

[0063] The structure of the primary power transmitting coil and the secondary power picking coil is exactly the same, and each turn of the coil is a rounded square formed by four straight lines with the same length and four quarter arcs with the same fillet radius; The length of the straight line segment of each turn of the coil is equal, denoted as l. The fillet size of the inner-turn coil and the outer-turn coil is different, and the arc radius of the inner-tu...

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Abstract

The present invention proposes a parameter design method of a rounded square coupler in an IPT system, comprising the steps of: determining the air gap height of the rounded square coupler, the maximum lateral offset distance, the coil area and the wire diameter; establishing a rounded square based on Newman's formula The equivalent model of the coupler, and normalize the structural parameters of the first turn coil; establish a rounded square coupler mutual inductance model with the normalized structural parameters of the first turn coil as a variable, and establish the rounded corners based on this The expression for the percentage improvement of the coupled mutual inductance of the square coupler compared to the square coupler, and the expression of the coupling mutual inductance of the rounded square coupler at the maximum offset point compared with the circular coupler, so that the two The normalized structural parameters of the first turn coil, in which the percentage of mutual inductance is increased while reaching the optimum, are the optimal structural parameters of the coupler. The invention can shorten the design cycle of the coupler, and improve the system performance by maximizing the coupling performance of the coupler.

Description

technical field [0001] The invention relates to wireless power transmission technology, in particular to a parameter design method of a rounded square coupler in an IPT system. Background technique [0002] Wireless Power Transfer (WPT for short) was first born in the United States in the 19th century. It is a new power access mode that realizes the transmission of electric energy from the source device to the power receiving device by means of space invisible soft media (such as magnetic field, electric field, laser, microwave, etc.). This technology achieves electrical isolation between power supply and power receiving equipment, so it fundamentally eliminates the problems of device wear, poor contact, and contact sparks caused by the traditional wired power supply mode. It is a clean, safe and flexible new power supply mode. It was selected as one of the top ten scientific research directions in the future by the American "Technology Review" magazine. [0003] Inductive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/17H02J50/10H02J50/00
CPCG06F30/23G06F30/17H02J50/10H02J50/005
Inventor 夏晨阳李欣宇杨旭浩殷嘉铖孙琪琪廖志娟伍小杰
Owner CHINA UNIV OF MINING & TECH
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