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A dual-parameter monitoring method for a four-degree-of-freedom two-way wireless power transmission system

A two-way radio and transmission system technology, applied in electrical components, circuit devices, etc., can solve the problems of increasing the overall technical cost and economic cost, increasing the difficulty and complexity of system design, and achieves low adverse effects on the system, simple structure, and high efficiency. The effect of precision

Active Publication Date: 2017-12-19
SOUTHEAST UNIV
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Problems solved by technology

This undoubtedly increases the design difficulty and complexity of the system, and also increases the overall technical cost and economic cost of the system

Method used

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  • A dual-parameter monitoring method for a four-degree-of-freedom two-way wireless power transmission system
  • A dual-parameter monitoring method for a four-degree-of-freedom two-way wireless power transmission system
  • A dual-parameter monitoring method for a four-degree-of-freedom two-way wireless power transmission system

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Embodiment Construction

[0018] The present invention will be further explained below in conjunction with the accompanying drawings.

[0019] figure 1 It is the structure and parameter monitoring circuit diagram of the two-way wireless power transmission system. Side 1 includes battery V1, converter 1, LCL resonant network, and side 1 controller; converter 1 is a single-phase full-bridge reversible rectifier connected to battery V1 and LCL resonant network; LCL resonant network includes series filter inductor L m , parallel capacitance C 1 and coil L 11 . Side 2 includes battery V2, converter 2, side 2 controller, and LCL-type resonant network; converter 2 is a single-phase full-bridge reversible rectifier, and the single-phase full-bridge reversible rectifier is connected to battery 2 and LCL-type resonant network; LCL-type resonant network including the series filter inductor L n , parallel capacitance C 2 and coil L 21 , and the capacitor C 1 and C 2 The value is configured to be consisten...

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Abstract

The invention discloses a dual-parameter monitoring method for a four-degree-of-freedom bidirectional wireless power transmission system. Key parameters influencing a system power factor and transmission efficiency are monitored on line in real time to master dynamic change of the key parameters, thereby providing a certain guarantee for energy interaction of the system under the condition of relatively high power factor and transmission efficiency. Specifically, a monitoring coil arranged at a middle point of resonance coils on the sides 1 and 2 of the bidirectional wireless power transmission system and a monitoring resistor connected in series with the monitoring coil are used as a monitoring platform, and an amplitude ratio and a phase difference of converter output voltages on the sides 1 and 2 of a system converter are obtained by taking the mutual inductance of the monitoring coil and the two resonance coils as a medium, specially, the amplitude ratio and the phase difference of the converter output voltages are indirectly reflected through a voltage phasor of the monitoring resistor. The monitoring platform can monitor the parameters within a relatively wide parameter change range, and a parameter monitoring result has relatively high precision.

Description

technical field [0001] The invention relates to a two-way wireless power transmission system parameter monitoring platform, and is especially suitable for the field of wireless power transmission in which energy flows bidirectionally for real-time monitoring of system key parameters. Background technique [0002] The two-way wireless power transfer system has a peer-to-peer topology on side 1 and side 2 because it can realize bidirectional flow of energy, which is especially suitable for wireless power supply between electric vehicles. Due to the limited energy storage capacity of an electric vehicle's on-board battery, when energy is wirelessly transmitted to another electric vehicle, it must have a high power factor and high transmission efficiency. To enable the system to interact with energy at a high power factor and transmission efficiency, this is inseparable from the real-time monitoring of key parameters that affect the system power factor and transmission efficienc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12
CPCH02J5/005
Inventor 谭林林颜长鑫黄学良郭金鹏王维
Owner SOUTHEAST UNIV
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