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A frequency stabilization circuit for non-contact energy transmission system

An energy transmission, non-contact technology used in circuit devices, electromagnetic wave systems, electrical components, etc.

Inactive Publication Date: 2011-12-21
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But when the load is too large, the resonance of the system is manifested as the transmission of reactive power, the transmission efficiency is low, and the load cannot work normally

Method used

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  • A frequency stabilization circuit for non-contact energy transmission system
  • A frequency stabilization circuit for non-contact energy transmission system
  • A frequency stabilization circuit for non-contact energy transmission system

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] like figure 1 , image 3 Shown: a frequency stabilization control circuit based on a non-contact energy transmission system, including an inverter 1, a primary side resonant circuit L p 、C p , Secondary resonant circuit L s 、C s , power regulation circuit 3;

[0026] The inverter 1 is a first switching tube S 1 , the second switch tube S 2 , the third switch tube S 3 and the fourth switch tube S 4 The composed bridge inverter circuit is connected with a DC power source Edc at the input end of the inverter 1 . The primary side resonant circuit L p 、C p By exciting the coil L p and primary side resonant capacitor C p Composed of a series resonant circuit, the secondary resonant circuit L s 、C s is determined by the pickup coil L s and the secondary side resonant capacitor C s The parallel resonant circuit compose...

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Abstract

The invention discloses a frequency stabilization circuit for a non-contact energy transmission system, which includes an inverter, a primary side resonance circuit, a secondary side resonance circuit and a power adjustment circuit; it is characterized in that: the primary side resonance circuit is connected with a frequency detection circuit The input end of the frequency detector is connected between the primary side resonant capacitor and the excitation coil, and its output end outputs the primary side resonant frequency value f1 to the first input end of the controller, and the second input end of the controller is input to the system setting The resonant frequency value f0 is fixed, the output control terminal of the controller is connected with the parallel capacitor array, and the parallel capacitor array is connected in parallel with the primary side resonant capacitor, and the controller controls the capacitance value of the parallel capacitor array according to f1 and f0. Its remarkable effect is: the circuit structure is simple, the control algorithm is easy to implement, the system has good dynamic response speed, stability and anti-interference, and the frequency stability can be guaranteed during the load change process to realize the maximum energy transmission of the system.

Description

technical field [0001] The invention relates to the technical field of non-contact energy transmission, in particular to a frequency stabilization circuit for a non-contact energy transmission system. Background technique [0002] like figure 1 As shown, the contactless energy transfer system mainly consists of a primary loop and a secondary loop. Among them, the primary circuit is fixed, mainly composed of high-frequency inverter and LC resonant circuit, the secondary circuit is mainly composed of pickup coil, power regulation circuit and variable load, which can move within a certain range, between the primary circuit and the secondary circuit There is no electrical connection. The primary loop mainly completes the conversion and transmission of electric energy, the secondary loop mainly completes energy pickup and power regulation, and the energy transfer is realized through spatial electromagnetic coupling between the systems. [0003] With the development of science ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J17/00H02J50/12
Inventor 王智慧苏玉刚戴欣唐春森孙跃
Owner CHONGQING UNIV
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