Maximum power control method for wireless power transfer system with three resonant coils
A technology of wireless energy transmission and wireless energy, which is applied in the application field of wireless energy transmission technology, can solve the problems of insufficient analysis, increase the complexity of system structure and control, and the inability to apply the three-resonant coil model, etc., to achieve the effect of automatic adjustment
Active Publication Date: 2017-02-08
SOUTH CHINA UNIV OF TECH
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The control method based on the frequency splitting phenomenon is to control the characteristics of the system itself, and has good performance, but the analysis of this control method is not comprehensive enough at present, and cannot be applied to the three-resonant coil model mentioned in the present invention
In addition, for other compensation capacitor matrix or adjustable capacitors to adjust the frequency, it increases the complexity of the system structure and control
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0021] figure 1 It is a schematic diagram of the scheme of the present invention. figure 2 It is a specific implementation circuit diagram of the frequency adjustable power source of the present invention, including a switch tube S, a first capacitor C 0 , the second capacitance C, the first inductance L 0 , the second inductance L and the load R.
[0022] image 3 It is a schematic diagram of the wireless power transmission system of the present invention with three resonant coils. The wireless power transmission transmitting device is composed of a resonant coil 1 and a resonant coil 2 , and the wireless power transmission receiving device is composed of a resonant coil 3 . The following takes this model as an example to illustrate the control method of the present invention.
[0023] Figure 4 It is a simplified equivalent circuit model of the schematic diagram of the three-resonant wireless power transmission system of the present invention (the coupling between the...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a maximum power control method for a three-resonance-coil wireless electric energy transmission system. The three-resonance-coil wireless electric energy transmission system comprises a frequency adjustable power source, a wireless electric energy transmission device, a load and a frequency adjusting controller. The control method includes that a wireless electric energy transmission receiving device feeds a signal back to the frequency controller to obtain a position signal of the wireless electric energy transmission receiving device, the frequency controller adjusts the frequency of the frequency adjustable power source according to the relation between the working frequency and the transmission distance to enable the load output power to be maintained at the highest level when the transmission distance of the wireless electric energy transmission device is changed, and an output voltage adjusting device conducts AC-DC conversion or AC-DC-AC conversion on the output of the wireless electric energy receiving device to supply power to the load. By means of the method, the maximum power output of the three-resonance-coil wireless electric energy transmission system is achieved, and the method is applicable to wireless charging systems with medium and high power in electric automobiles and the like.
Description
technical field [0001] The invention belongs to the application field of wireless power transmission technology, and in particular relates to a maximum power control method of a three-resonance coil wireless power transmission system. Background technique [0002] In 2006, researchers at the Massachusetts Institute of Technology (MIT) successfully lit a 60W light bulb with 40% efficiency at a distance of about 2m by using the principle of physical resonance. This experiment became a new breakthrough in wireless power transmission technology. It has realized all-round wireless power transmission in the middle distance, and set off an upsurge of wireless power transmission research all over the world. [0003] In fact, as early as more than 100 years before the success of the MIT experiment, the American inventor Nicola Tesla realized a similar technology, but for a long time after that, the development of wireless power transmission technology was slow. [0004] After the su...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12
Inventor 张波黄润鸿丘东元
Owner SOUTH CHINA UNIV OF TECH