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DC-DC (direct current to direct current) converter circuit with high step-up ratio based on wireless electric energy transmission

A wireless power transmission, DC-DC technology, applied in the direction of output power conversion device, DC power input conversion to DC power output, circuit device, etc., to achieve the effect of simple structure

Active Publication Date: 2015-03-04
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As a new technology, the strong magnetic coupling wireless power transmission technology has broad application prospects, but there is no report on the high step-up ratio DC-DC converter obtained by using this scheme

Method used

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  • DC-DC (direct current to direct current) converter circuit with high step-up ratio based on wireless electric energy transmission
  • DC-DC (direct current to direct current) converter circuit with high step-up ratio based on wireless electric energy transmission

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Embodiment Construction

[0027] The embodiments of the present invention are further described in conjunction with the accompanying drawings.

[0028] figure 1 It is a schematic diagram of a high transformation ratio DC-DC converter circuit based on wireless power transmission in this embodiment. The circuit is divided into three modules: DC-AC high-frequency conversion module, wireless power transmission module and rectification module.

[0029] figure 2 It is the DC-AC high-frequency conversion module part of the high-transformation-ratio DC-DC converter circuit based on wireless power transmission in this embodiment, and adopts the E-type inverter scheme.

[0030] figure 1 The part shown in middle 1 is the DC-AC high-frequency conversion module: In+ and In- are the DC input terminals, and the driving terminal G uses PWM to control the switching on and off of the switching tube Q1. The value of the inductance L is relatively large, so that the flowing current is a constant value. The inducto...

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PUM

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Abstract

The invention discloses a DC-DC (direct current to direct current) converter circuit with a high step-up ratio based on wireless electric energy transmission. The circuit comprises a DC-AC (direct current to alternating current) high-frequency converter module for converting direct current into high-frequency alternating current, a wireless electric energy transmission module for transmitting wireless electric energy under a high-frequency alternating current state and a rectifying module for converting the alternating current into direct current. The DC-DC converter circuit with the high step-up ratio is realized by adopting a high-frequency magnetic-coupling resonant wireless electric energy transmission technology. The DC-DC converter circuit with the high step-up ratio is simple, reliable and practical in simple. The DC-DC converter with the high step-up ratio is widely applied to the fields such as fuel batteries and solar photovoltaic cells, and also can be used for completing the wireless energy transmission task.

Description

[0001] technical field [0002] The invention relates to a DC-DC converter circuit with a high step-up ratio based on wireless power transmission, which uses the high-frequency resonance strong magnetic coupling of the primary side and the secondary side to perform energy transfer and complete a high step-up ratio, and belongs to the technical field of wireless power transmission and electric power electronics field. Background technique [0003] Since the DC input voltage is low and the output voltage is high, the DC-DC converter is required to have a high step-up ratio. A DC-DC converter with a high step-up ratio can be obtained through a transformer scheme with a high transformation ratio, or a PWM control scheme. At present, high step-up ratio DC-DC converters are widely used in many fields such as fuel cells and solar photovoltaics. [0004] In order to obtain a DC-DC converter with a high step-up ratio, there are many schemes, and topology is basically used for s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/315H02J17/00H02J50/12
Inventor 刘珺徐晓玲曾建军
Owner EAST CHINA JIAOTONG UNIVERSITY