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Multi-loop control method for magnetic resonance coupling wireless power transmission system

A technology of wireless power transmission and multi-loop control, applied in electromagnetic wave systems, electrical components, circuit devices, etc., can solve problems such as single target and failure to combine multiple targets, and achieve the effect of maximizing efficiency

Active Publication Date: 2015-02-25
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, current control methods often target a single target, or fail to combine multiple targets
There is no discussion on the control method that satisfies the above requirements at the same time

Method used

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  • Multi-loop control method for magnetic resonance coupling wireless power transmission system
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  • Multi-loop control method for magnetic resonance coupling wireless power transmission system

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with accompanying drawing.

[0026] The multi-loop control method of the magnetic resonance coupling wireless power transmission system described in the present invention is a multi-objective control method, which can simultaneously meet three main requirements of the system: effective protection mechanism, stable output voltage and highest transmission efficiency.

[0027] The key technology of the present invention is: (1) Three mutually coordinated adjustment loops are used to respectively control the resonant current at the transmitting side, the output voltage at the receiving side, and the equivalent load resistance. (2) The current loop on the transmitting side has the fastest adjustment speed, which not only ensures safety in principle, but also reduces the design difficulty of the receiving controller. (3) The load loop has the slowest adjustment speed. It changes the resonant current on the ...

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Abstract

The invention provides a multi-loop control method for a magnetic resonance coupling wireless power transmission system. According to the method, three loops are used for controlling the resonance current on the transmitting side, the output voltage on the receiving side and equivalent load resistance respectively, the three loops are matched, and therefore safety, stability and high efficiency of the system are guaranteed. By the adoption of the method, the main control requirements of the magnetic resonance coupling wireless power transmission system are met, the method is effective and easy to use, and multiple purposes are achieved.

Description

technical field [0001] The invention relates to a control method for a near-field wireless power transmission system, in particular to a multi-loop control method for a magnetic resonance coupling wireless power transmission system. Background technique [0002] Wireless power transmission technology can be divided into two categories: far-field and near-field. Among them, the near-field magnetic resonance coupling wireless power transmission technology achieves the best balance between distance and efficiency, so it is used for wireless charging and power supply of electric vehicles, mobile phones, implanted medical devices and other equipment. In these applications, there are several requirements for wireless power transfer systems: [0003] 1) Effective protection mechanism. The resonance unit in the magnetic resonance wireless power transfer system generally has a large resonance energy, so it needs an effective protection mechanism to ensure safe operation. [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J17/00H02J50/12
CPCH02J7/025
Inventor 杨旭李弘昌王康平黄浪李界
Owner XI AN JIAOTONG UNIV
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