Wireless power transmission impedance automatic matching device

A wireless power transmission and automatic matching technology, applied in circuit devices, electrical components, electromagnetic wave systems, etc., to achieve the effect of high reliability and robustness

Inactive Publication Date: 2013-06-12
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

At present, the research on magnetic coupling resonant power transmission technology is still in its infancy, mainly focusing on the improvement of system performance and application research in special occasions.

Method used

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  • Wireless power transmission impedance automatic matching device
  • Wireless power transmission impedance automatic matching device
  • Wireless power transmission impedance automatic matching device

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Embodiment Construction

[0019] The invention provides a wireless power transmission impedance automatic matching device with wide frequency band, intelligence and high reliability. A wireless power transmission impedance automatic matching device of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings. Impedance adjustment system Reflection coefficient detection system

[0020] Such as figure 1 As shown, a wireless power transmission impedance automatic matching device of the present invention includes a DSP control system 1 that can receive the signal of the reflection coefficient detection system 5 to obtain the reflection of the radio frequency voltage, and then drive the step according to the capacitance position signal of the capacitance position detection system 6 The motor and its drive system 3 adjust the position of the capacitor, and at the same time calculate the control state of the contactor array controller, which is ch...

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Abstract

The invention discloses a wireless power transmission impedance automatic matching device. The device mainly comprises a digital signal processing (DSP) control system, a contactor array controller, a stepping motor, a driving system of the stepping motor, an impedance adjusting system, a reflection coefficient detecting system, a capacitance position detecting system and the like. The system belongs to fields of a high-frequency electromagnetic theory and the frontier domain of the control engineering application of the theory; the influence of different impedances on power wireless transmission power and efficiency is prevented; and the whole performance of power transmission is improved. The invention does not only provide the impedance matching device which is wide in frequency band, intelligent and high in reliability and improves the intelligent level of conventional matching, but also provides the impedance adjusting system applicable to power transmission aiming at the characteristics of wireless power transmission for the first time.

Description

technical field [0001] The invention relates to a wireless power transmission impedance automatic matching device. In particular, it relates to a wireless power transmission impedance automatic matching device with wide frequency band, intelligence and high reliability. Background technique [0002] Since it was discovered in 1840 that the use of electromagnetic induction and wires can transmit electric energy, the transmission of electric energy is mainly carried out by direct contact of wires. The charging of electrical equipment is generally carried out through plugs and sockets, but when high-power charging is performed, there is a risk of high-voltage electric shock in this charging method. And due to the existence of friction and wear, the safety, reliability and service life of the system are low, especially in some flammable and explosive fields such as chemical industry and mining, which can easily cause major accidents. The new contactless power transmission syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J17/00H02J50/80
Inventor 李阳杨庆新李劲松薛明张献金亮
Owner TIANJIN POLYTECHNIC UNIV
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