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Design method of parallel coils for magnetically coupled high-efficiency power transmission

A technology of power transmission and design method, which is applied in the direction of current collectors, electric vehicles, electrical components, etc., can solve problems such as energy consumption and system complexity, and achieve the effects of improving transmission efficiency, suppressing frequency splitting, and maintaining high-efficiency transmission

Active Publication Date: 2019-12-03
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these additional circuits complicate the system and consume additional power

Method used

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  • Design method of parallel coils for magnetically coupled high-efficiency power transmission
  • Design method of parallel coils for magnetically coupled high-efficiency power transmission
  • Design method of parallel coils for magnetically coupled high-efficiency power transmission

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Embodiment Construction

[0038] The specific technical solutions of the present invention are described below in conjunction with the examples.

[0039] Magnetic coupling high-efficiency power transmission parallel coil design method, which includes a transmitting coil (a forward and reverse parallel coil composed of a forward coil and a reverse coil), a receiving coil (unidirectional coil), an adjustable capacitor C 1 and adjustable capacitor C 2 ; The forward coil at the transmitting end, the reverse coil and the one-way coil at the receiving end are all helical circular coils.

[0040] The signal output terminal of the signal generator is connected to the signal input terminal of the power amplifier, and the positive output terminal of the power amplifier is connected to the adjustable capacitor C 1 One end of the connection, the adjustable capacitor C 1 The other end of the transmitter is connected to one end of the forward coil of the transmitter and one end of the switch g, the other end of th...

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Abstract

The invention discloses a design method of a magnetic-coupling high-efficiency electric energy transfer shunt coil. The design method comprises the steps of determining the size, the radius and the turn number of a one-way coil of a receiving end according to the dimension of a charging object in practical application; determining the radius of a forward coil and a reverse coil of a transmitting end by an excitation source; determining the turn number of the forward coil and the reverse coil of the transmitting end according to the flatness of a curve of mutual inductance between forward and reverse shunt coils of the transmitting end and the one-way coil of the receiving end varying with a transfer distance; during short-distance transfer, taking the forward and reverse shunt coils of thetransmitting end as transmitting coils, and inhibiting frequency splitting to realize high-efficiency transfer of system energy; and when the transfer distance exceeds a certain range, performing open circuiting on the reverse coil of the transmitting end, taking the forward coil of the transmitting end as the transmitting coil, maintaining the high-efficiency transfer of the system energy, tuning the capacitance, and tuning transmitting and receiving coils at used working frequency to realize design. The method can simultaneously realize short-distance energy transfer and long-distance energy transfer; and a WPT / MRC system can perform high-efficiency energy transfer.

Description

technical field [0001] The invention belongs to the technical field of wireless power transmission equipment, and in particular relates to a design method for parallel coils for magnetic coupling high-efficiency power transmission. Background technique [0002] In recent years, with the development of science and technology, the use of electronic products represented by smart phones and tablet computers has surged, and various household appliances have entered thousands of households. These electronic products have brought great convenience and enjoyment to people. Brings a tangle of wires and limits the flexibility of the mobile device. In addition, with the increase of income, the automobile industry will continue to maintain a high-speed growth trend, but at this stage, it is facing the severe challenge of oil shortage. It can be expected that with the decline of non-renewable energy sources such as oil and natural gas, electric vehicles will replace fuel vehicles in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H02J50/40H02J50/90H02J7/00
Inventor 王萌施艳艳冯静高伟康
Owner HENAN NORMAL UNIV
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