- In the wireless power transfer example, you need to change the default spiral designs to make it resonant at the frequency you want. The spiral used in the example is designed to resonant at 30MHz. The value of Rin and Rout proportional to wavelength is a good start points to try out.
- The default voltage used to excite antenna set to 1V by default, and this is not changable in antenna toolbox. To obtain the feed current, there is a method called feedCurrent(obj,freq) will give you the current at the feeding. To get the current for a 50V excitation, you can just multiply the feedCurrent value obtained from 1V voltage excitation. The power then can be obtained from P=real(I*I'*Z). The effeiciency, there are different version of efficiency definition. Depends on what you want, you shall be able to calculate your efficiency from voltage, feedCurrent and impedance.
setting resonant frequency and finding circuit properties (power, current, voltage) for a wireless power transfer system
2 views (last 30 days)
Show older comments
Yuri Damasceno
on 24 Jan 2019
Answered: Sohag Kumar Saha
on 9 Nov 2019
I have seen the example "Modeling Resonant Coupled Wireless Power Transfer System" and i have a few questions about that:
1) How can i set the resonant frequency of my system to 100kHz?
i have tried changeing the first lines to:
fc=100e3;
fcmin = 50e3;
fcmax = 200e3;
fband1 = 25e3:3e3:fcmin;
fband2 = fcmin:3e3:fcmax;
fband3 = fcmax:3e3:250e3;
freq = unique([fband1 fband2 fband3]);
didnt work as the reactance graph didnt show a peak, it just kept rising continuously.
2) How can i set and find properties such as voltage, power, current and efficiency?
I want to set certain values as fixed, for example a voltage of 50V and find values of the remaining.
0 Comments
Accepted Answer
Da Huang
on 27 Feb 2019
Hi Yuri,
Hope the following answer your question.
The system setup in the wireless power transfer example is a demonstration of what antenna toolbox can do. The system ignore the impedance matching to 50Ohm in actual system. To bettern couple your feed energy to the system, another single loop for impedance matching as shown in MIT example is recommended to be included in the system.
Da
0 Comments
More Answers (1)
Sohag Kumar Saha
on 9 Nov 2019
Is it possible to use this type of Resonant coupled wpt system for Microwave frequency range like 2.45 GHZ or 5.8 GHZ ?
I want to implement such system in a WPT system working in the microwave frequency range. I tried but the result seems unsatisfatory till now....
Thanks in advance ....
0 Comments
Communities
More Answers in the Power Electronics Control
See Also
Categories
Find more on Simscape Electrical in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!