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TELKOMNIKA, Vol.xx, No.x, Month 201x, pp. 1~8
ISSN: 1693-6930
accredited by DGHE (DIKTI), Decree No: 51/Dikti/Kep/2010
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1
Wireless Power Transfer by Using Solar Energy
1
M. Fareq, 2M. Fitra, 3M. Irwanto, 4Syafruddin. HS, 5N. Gomesh, 6M. Rozailan, 7M. Arinal
8
Y.M. Irwan, 9J. Zarinatul
123456789Centre
of Excellent for Renewable Energy (CERE)
School of Electrical System Engineering
Universiti Malaysia Perlis
Email :
[email protected], [email protected], [email protected],
[email protected], [email protected], [email protected],
[email protected], [email protected], [email protected]
Abstract
This project is based on how to transmit electrical power without wires, using solar
energy as source. The power is transferred wirelessly through an inductive coupling method.
With this new discovery, we no longer need complicated with the cable passing around us, with
Power Without Wires (Wireless Electricity) we can use our electronic equipment such as TV,
MP3 Player, HiFi Headset, everything works without the use of batteries or electrical wiring. In
fact, mobile devices such as laptop batteries, mobile phone, or digital camera filled
automatically, so once you enter the house, of course without having to plug in the cable. The
project is offer to study and fabricate wireless power transfer by using inductive coupling.
Experiments have been conducted and the wireless power transfer using inductive coupling can
be transfer energy up to 10 cm.
Keywords: wireless power, solar energy, inductive coupling
1. Introduction
Previously we already know the network connection data wirelessly or more often called
a wireless or wifi, well at the moment scientists are developing a Wireless Electricity networks
(Wireless Electricity).
The basic principle of how electrical energy can be transferred without wires is related
to the phenomenon of resonance. Resonance is an object pulsate process because there are
other objects that vibrate, this happens because an object vibrating at the same frequency with
the frequency of affected objects. Inductive coupling is the resonant coupling between the coils
of two LC circuits with the same resonant frequency, transferring energy from one coil to the
other [1].
Received May 9, 201x; Revised August 3, 201x; Accepted August 16, 201x
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ISSN: 1693-6930
2. Research Method
Figure 1. Schematic diagram wireless power transfer by using solar energy
Wireless power or wireless energy transmission is the transmission of electrical energy
from a power source to an electrical load without man made conductors. Wireless transmission
using solar energy is wireless are inconvenient, no hazardous, and green technology [2].
Figure 2. Experimental setup and collect data
TELKOMNIKA Vol. xx, No. x, Month 201x : first_page – end_page
TELKOMNIKA
ISSN: 1693-6930
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Figure 3. Inductive Coupling in this case as the antenna of Wireless Power Transfer
A wireless power transmitter emits a magnetic field with the help of the coil with the
same frequency emitted by wireless power receiver. In order for optimal impedance, cable reels
used on both sides.
Cable reels also serves as the transmission gear bike. When the transmission gear
uphill lowered in order to get more energy efficient, and vice versa. Wireless power receiver also
determines its own voltage required to fit. Thus, the function of the adapter is not required. In
addition, the wireless power transmitter also only emit as much energy as is required by the
receiver [3].
These equations apply for when the length of the wire is much longer than the wire
diameter [4], use this formula :
 4l 3 
L  0.21 ln  
 d 4
Where :
L = inductance (μH)
l = length (mm)
d = wire diameter (mm)
3. Results and Analysis
An experiments has been conducted to get the WPT efficiency. The transmission
inductive coupling was supply source from solar energy 9 Volt. The difference in the distance
between transmitter and receiver are varied to obtain the optimum distance for wireless power
transmission.
Title of manuscript is short and clear, implies research results (First Author)
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ISSN: 1693-6930
Table 1.
The difference data vs DC output voltage and Frequency
Distance (cm)
0
1
2
3
4
5
6
7
8
9
10
DC output
Voltage (Volt)
8.89
8.36
8.01
7.86
6.93
6.01
5.79
4.88
4.16
3.88
3.60
Frequency
(MHz)
3.34
3.20
3.13
3.05
2.90
2.82
2.73
2.61
2.53
2.41
2.30
Table 1 shows the result of different distance and the voltage when the distance is varied. The
input source used from solar energy and the load used LED.
Varied distance vs DC output voltage and Frequency
3.6
Frequency (MHz)
3.4
3.2
3
2.8
2.6
2.4
2.2
10
8
10
8
6
6
4
4
Voltage (Volt)
2
2
0
Distance (cm)
Figure 4. Graph of varied distance vs DC output voltage and Frequency
Figure 4 shows the graph that has been created refer to table 1. The DC output voltage
and Frequency getting lower as the distance are higher. From this graph we can conclude that
the wireless power transmission is higher when the distance is nearer.
TELKOMNIKA Vol. xx, No. x, Month 201x : first_page – end_page
TELKOMNIKA
ISSN: 1693-6930
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To observe the exact waveform of an electrical signal in this study used oscilloscope.
Oscilloscopes are electronic measuring instrument that serves to project the form of an
electrical signal that can be seen and studied.
Figure 5. Waveform at Transceiver
Figure 6. Waveform at Receiver
From Figure 5 and 6 waveform has measured from the point of the antenna or inductive
coupling in which the waveform is transmitted and received as well as sinewave. And then the
sinewave is converted to DC waveform for DC load by using rectifier.
Title of manuscript is short and clear, implies research results (First Author)
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ISSN: 1693-6930
4. Conclusion
From the overall experiment conducted from wireless power transfer using inductive
coupling for mobile phone charger below conclusions are deduce :
1.
2.
3.
Base on experimental result, the study on wireless power transfer by using solar energy
has much aspect in terms distance, range of frequency and result show the closer the
distance, the voltage transferred is higher.
From the experimental result in table 1, distance of the nearest is the most efficient
wireless power transfer.
Base on experimental result, device that has been made can be reach is up to 10 cm with
3.60 Volt.
References
[1] Mehdipour, Amin, Behrouz Moarref, Abouzar Shahraki Kia, and Marzieh Yazdanipour.
"Evaluation of inductive coupling and RF-DC for Wireless Power Transmission", 2012 Ninth
International Conference on Wireless and Optical Communications Networks (WOCN),
2012.
[2] T.S. Hasarmani, “Wireless Power Transmission for Solar Power Satellite“,Department of
Electrical Engineering, Bharati Vidyapeeth University’s College of Engineering. 2011.
[3] Rosa, Edward B "The Self and Mutual Inductances of Linear Conductors". Bulletin of the
Bureau of Standards 4 (2): 301–344.doi:10.6028/bulletin.088, 1908
[4] AIEE, “Experiments with Alternate Currents of Very High Frequency and Their Application
to Methods of Artificial Illumination”, Columbia College, N.Y., 20 May 1891.
TELKOMNIKA Vol. xx, No. x, Month 201x : first_page – end_page