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Method for rapidly searching frequency of high transmission efficiency wireless electric energy transmitting system

A wireless energy and transmission system technology, applied in electrical components, instruments, calculations, etc., can solve problems such as short-term stagnation, achieve fast convergence speed and reduce search time.

Inactive Publication Date: 2015-12-09
HENAN NORMAL UNIV
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Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a fast frequency search method for a wireless power transmission system with high transmission efficiency. The problem of selecting the number of particles in the algorithm itself, the algorithm can quickly find the optimal value of the system efficiency

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  • Method for rapidly searching frequency of high transmission efficiency wireless electric energy transmitting system
  • Method for rapidly searching frequency of high transmission efficiency wireless electric energy transmitting system
  • Method for rapidly searching frequency of high transmission efficiency wireless electric energy transmitting system

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Embodiment Construction

[0020] The specific content of the present invention will be described in detail in conjunction with the accompanying drawings. The invention is mainly aimed at the magnetic coupling wireless power transmission system, and uses the improved particle swarm algorithm to reduce the size of the particles, and the algorithm can quickly find the maximum efficiency point and its corresponding frequency. The following is illustrated by a specific concrete example and simulated with Matlab. Please refer to the particle swarm optimization algorithm process figure 1 , a fast frequency search method for a high-transmission-efficiency wireless power transmission system, comprising the following steps:

[0021] (1), initialization algorithm, including setting the particle population dimension D=1, the maximum number of iterations MaxNum=200, and simultaneously limiting the particle maximum velocity v max , initialize the inertia weight w;

[0022](2) Directly set the maximum size Nmax of...

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Abstract

The invention discloses a method for rapidly searching frequency of a high transmission efficiency wireless electric energy transmitting system, wherein particle swarm sizes in a general algorithm are separated respectively as a maximum particle swarm size Nmax =30 and a minimum particle swarm size Nmin=2; the particle swarm sizes are gradually decreased with the increase in number of iterations; and the overall decreasing approach of the particle swarm sizes is similar to an exponential change curve. According to the invention, in the early stage of searching, the particle swarm sizes are slowly changed, which facilitates to universal search; in the later stage of searching, the particle swarm sizes are changed to be minimum, thus reducing redundant particles, simplifying the algorithm and quickening the convergence speed of the later algorithm; by adopting the algorithm of the invention, the selection of the particle swarm sizes has evidence to find; in the early stage of searching, the algorithm has great potential of self learning ability and social learning ability; and in the later stage of searching, the convergence speed is quickened, thus saving the searching time of the algorithm.

Description

technical field [0001] The invention belongs to the technical field of magnetic coupling wireless power transmission, in particular to the field of finding methods for system transmission efficiency in magnetic coupling wireless power transmission systems, and specifically relates to a fast frequency search method for high transmission efficiency wireless power transmission systems. Background technique [0002] Wireless power supply technology uses electromagnetic fields or electromagnetic waves to realize non-contact energy supply from the transmitter to the receiver. At present, there are many researches at home and abroad, and the more mature non-contact energy transmission technology uses the principle of electromagnetic induction. Although it has certain advantages, its transmission efficiency is low and the transmission distance is short. These shortcomings make the development of this technology have great limitations. In 2007, MIT successfully adjusted the resonant ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J5/00G06N3/00
Inventor 王萌孙长兴施艳艳梁洁
Owner HENAN NORMAL UNIV
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