Advancements in Wireless Power (Energy Transfer)

8/9/2019 Advancements in Wireless Power (Energy Transfer)

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Advancements in

Wireless PowerHaleem Azmy

Bhuwan Ghimire

Andrew R McHugh

Tuesday, April 13, 2010


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Thank YouMITDr. Palmer and Dr. Stumpe



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What are we doing?



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Giler, Eric. "Eric Giler demos wireless electricity | Video on TED.com." TED: Ideas worth spreading. N.p., n.d. Web. 2 Dec. 2009..

http://www.ted.com/talks/lang/eng/eric_giler_demos_wireless_electricity.htmlhttp://www.ted.com/talks/lang/eng/eric_giler_demos_wireless_electricity.html


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What are we doing?



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Why is this Important?

More efficient thanbatteries1, and no more

batteries in landfills

No tangled wires

Automatic charging

Less gasoline

1. Giler, Eric. "Eric Giler demos wireless electricity | Video on TED.com." TED: Ideas worth spreading. N.p., n.d. Web. 2 Dec. 2009.

.

http://www.ted.com/talks/lang/eng/eric_giler_demos_wireless_electricity.htmlhttp://www.ted.com/talks/lang/eng/eric_giler_demos_wireless_electricity.htmlhttp://www.ted.com/talks/lang/eng/eric_giler_demos_wireless_electricity.html


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When was wireless

power first discovered?



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When was wireless

power first discovered?

1800sTuesday, April 13, 2010


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Theory



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ResonanceInductance



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Resonance



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f0

f0

Resonance



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f0

f0

Resonance



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f0

f0

Resonance



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f0

f0

Resonance



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Faradays Law of

Induction (1800s)



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Resonancef0

f0


S l C l d


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f0

f0

Strongly Coupled,Magnetically

Resonant Coils


S l C l d


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f0

f0


Resonant Coils


S l C l d


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f0

f0


Resonant Coils


S l C l d


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f0

f0


Resonant Coils


S l C l d


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Resonant Coils

f0

f0


S l C l d


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Resonant Coils

f0

f0



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Why Our Experiment

is Different Midrange power

transfer

Resonance is key

Safer than Teslacoils

Interference isessentially non-existent



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Our Experiment



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Equipment Needed

Two self resonating coils

(made out of magnetwire)

A source of alternatingcurrent

Oscilloscope

Laws of Physics



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Whats all this in

pseudo-simple language? Works on principle of Wireless Power Transfer Via

Strongly Coupled Magnetic Resonances

A.C. in the driving coil makes it oscillate at a certain

frequency creating an alternating magnetic field

This generated magnetic field will transfer power tothe receiving coil by oscillating at the same frequency.This is known as a coupled resonance and is the

principle behind this technique of wireless power.

A.C. will be induced in the receiving coil, which can beread by an oscilloscope.



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0

1.500

3.000

4.500

6.000

0 0.500 1.000 1.500 2.000 2.500 3.000 3.500

Distance vs. Induced RMS Voltage

InducedRMSV

oltage(V)

Distance (m)



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0

0.15000

0.30000

0.45000

0.60000

0.75000

0 0.500 1.000 1.500 2.000 2.500 3.000 3.500

Distance vs. Induced RMS Power

InducedRMSP

ower(W)

Distance (m)



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0

1.000

2.000

3.000

4.000

5.000

6.000

0 2.000 4.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000

Frequency vs. Induced RMS Voltage

InducedRMSV

oltage(V)

Frequency (MHz)



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0

0.12500

0.25000

0.37500

0.50000

0 2.000 4.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000

Frequency vs. Induced RMS Power

RMSInducedP

ower(W)

Frequency (MHz)


F I d d RMS P LOG SCALE


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0.00001

0.00010

0.00100

0.01000

0.10000

0 2.000 4.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000

Frequency vs. Induced RMS Power LOG SCALE

RMSInducedPower(W)

Frequency (MHz)


RMS V l I d d RMS V l


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0

3.75

7.50

11.25

15.00

0 1.00 2.00 3.00 4.00

y = 2.9204x - 0.0387

R = 0.9999

RMS Voltage vs. Induced RMS Voltage

InducedRMSV

oltage(V)

RMS Voltage (V)


RMS V l I d d RMS P


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0

0.500

1.000

1.500

2.000

0 1.00 2.00 3.00 4.00

y = 0.1448x2 - 0.0126x + 0.0045

R = 0.9999

RMS Voltage vs. Induced RMS Power

RMSInducedP

ower(W)

RMS Voltage (V)



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Future



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Problems

Hallway data

Reading errors

Manufacturing troubles

Over our heads



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Future Studies

Couple the coils differently

Multiple receiving coils

Accurately measuremagnetic field

Use a stronger functiongenerator

Change coil geometry

Try different interference



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Documents

Advancements in Wireless Power (Energy Transfer)