A multi-tap wireless power transmission system and its efficiency optimization method

A technology for wireless power transmission and system efficiency, applied in electrical components, circuit devices, etc., can solve the problems of low transmission efficiency and high cost, and achieve the effects of optimizing system efficiency, improving efficiency, and simple control

Active Publication Date: 2021-03-23
SOUTHWEST JIAOTONG UNIV +1
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Problems solved by technology

[0007] In order to solve the problem of low transmission efficiency and high cost of the wireless power transmission system in the prior art, a multi-tap wireless power transmission system and its efficiency optimization method are provided

Method used

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  • A multi-tap wireless power transmission system and its efficiency optimization method
  • A multi-tap wireless power transmission system and its efficiency optimization method
  • A multi-tap wireless power transmission system and its efficiency optimization method

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Embodiment Construction

[0055] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0056] System efficiency optimization method design and control process of the present invention are as follows:

[0057] (1) Steps to determine the tap position of the transmitting coil:

[0058] ①In order to ensure that the system can maintain high efficiency within a wide range of output power variation, according to P L The range is divided into multiple power segments (P L1 ~P L2 , P L2 ~P L3 ......P LN-1 ~P LN );

[0059] ② Calculate P L1 , P L2 ......P LN The corresponding optimal number of turns of the transmitting coil n iopt1 , n iopt2 ... n ioptN ;

[0060] ③In the optimal...

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Abstract

The invention discloses a multi-tap wireless power transmission system and an efficiency optimization method thereof, belongs to the technical field of wireless power transmission systems, and solvesthe problems of low transmission efficiency and high cost of a wireless power transmission system in the prior art. The transmission system comprises a direct-current power supply, wherein the direct-current power supply is electrically connected with a high-frequency inverter, the high-frequency inverter is electrically connected with a transmitting end resonance network, the resonance network iselectrically connected with a transmitting coil, the transmitting coil internally comprises multiple sections of sub-coils, each section of sub-coil is electrically connected with a control switch and a resonance compensation capacitor which are matched with each other, a receiving coil is arranged in a high-frequency alternating magnetic field generated by the transmitting coil, the receiving coil is electrically connected with a receiving end resonance network and a rectifier bridge, and the rectifier bridge is electrically connected with a load resistor. The multi-tap wireless power transmission system has the advantages of high transmission efficiency, simple control, no need of communication and low cost.

Description

technical field [0001] The invention belongs to the technical field of wireless energy transmission systems, and in particular relates to a multi-tap wireless energy transmission system and an efficiency optimization method thereof. Background technique [0002] The efficiency optimization problem of wireless energy transfer system is one of the current research hotspots. However, for a wireless energy transfer system with a wide range of output power variation, it is difficult to optimize the efficiency of the system while meeting the power requirements. At present, for wireless energy transfer systems with a wide range of output power variation, the main efficiency optimization methods used include: 1) DC / DC converter; 2) phase shift control; 3) system parameter optimization. [0003] 1) DC / DC converter: When the output power of the system is different, there is an optimal load value to make the system efficiency the highest. Therefore, the DC / DC converter can be used to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H02J50/70H02J50/40H02J50/80
CPCH02J50/12H02J50/40H02J50/70H02J50/80
Inventor 麦瑞坤顾耘东徐叶飞杨环宇何正友付稳超
Owner SOUTHWEST JIAOTONG UNIV
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