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A wireless power transmission single bridge power circuit and its impedance adjustment method

A power circuit and wireless power transmission technology, which is applied in the direction of output power conversion device, circuit device, AC power input conversion to DC power output, etc., can solve the problem of no symmetry and real-time equivalent impedance adjustment related technologies, and achieve The effect of optimizing performance

Active Publication Date: 2022-01-25
SHANGHAI JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Searching for the post-stage rectification circuit and impedance matching circuit of wireless power transmission found that no technology related to equivalent impedance adjustment with better symmetry and better real-time performance has been found.

Method used

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  • A wireless power transmission single bridge power circuit and its impedance adjustment method
  • A wireless power transmission single bridge power circuit and its impedance adjustment method
  • A wireless power transmission single bridge power circuit and its impedance adjustment method

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Embodiment Construction

[0043] The following is a detailed description of the embodiments of the present invention. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0044] Such as figure 1 Shown is a circuit diagram of a wireless power transmission single bridge power circuit according to an embodiment of the present invention.

[0045] Please refer to figure 1 , the wireless power transmission single bridge power circuit of this embodiment includes: a compensation circuit and a rectification circuit; wherein,

[0046] The compensation circuit includes: a coupling coil W1, a first inductance L1, a second inductance L2, a first capacitor C1, a second capacitor C2 and a third capacitor C3;

[0047] The rectifier circuit includes: a third inductor L3, a fourth ind...

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Abstract

The invention discloses a wireless power transmission single-bridge power circuit and its impedance adjustment method. The compensation circuit includes: a coupling coil, an inductor, and a capacitor; the rectification circuit includes: an inductor, a capacitor, a diode, a power switch, and a resistor; the coupling coil and the first, The second capacitance is connected; the first capacitance is connected with the third capacitance and the first inductance; the second capacitance is connected with the third capacitance and the second inductance, the first and the third inductance are connected, the second and the fourth inductance are connected; the third inductance Connected to the fourth capacitor, the fourth capacitor is connected to the first diode and the first power switch; the fourth inductor is connected to the fifth capacitor, and the fifth capacitor is connected to the second diode and the second power switch; the first, After the second diode is connected, it is connected with the sixth capacitor and the resistor to form an output positive pole; after being connected with the first and second power switches, it is connected with the sixth capacitor and the resistor to form an output negative pole. The invention has the advantages of symmetrical controlled electric quantity, wide adjustment range, less energy consumption of accessories of a controllable rectification circuit, and the like.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a wireless power transmission single-bridge power circuit and an impedance adjustment method thereof. Background technique [0002] The wireless power transmission system includes a transmitting circuit and a receiving circuit, and a double-sided LLC structure can be adopted. There is a magnetic coupling mechanism between the transmitting circuit and the receiving circuit, and there is a compensation circuit in the transmitting circuit and the receiving circuit. The rectification circuit is used after the compensation circuit of the receiving circuit to obtain a DC output voltage and provide DC power for the load of the latter stage. There are many kinds of DC power loads, including constant power loads, constant current loads, pure resistance loads, inverter loads and battery loads. From an average point of view, in a steady state, for a symmetrical load, such as a st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/219H02J50/10
CPCH02M7/219H02J50/10
Inventor 王京吴双常中科李煌王天风侯孝涵徐青菁杨喜军高飞唐厚君
Owner SHANGHAI JIAOTONG UNIV
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