Inductive Power Transmission

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Inductive Power Transfer
Group 10 Muralidhar Konda Shourie Reddy

OBJECTIVE
● The main aim of the project is to design and construct a method to transfer wireless Electrical Power to charge a low power device so as to reduce the usage of “wires”. ● Another application would be to include charging of multiple devices using a single source .

SPECIFICATIONS
● High frequency (upto 100-500 KHz) ● High Efficiency(40-50%) which can be achieved by increasing the coupling between the transmitter and receiver. ● The range should not be less than 10 cms. ● High current(500mA or more).

METHODS
There are different methods by which power can be transmitted wirelessly. Some of them would be ● Using Inductive Coupling for short range. ● Resonant Induction for mid range. ● Electromagnetic wave power transfer for high range.

TRANSMITTER MODULE
● The transmitter module of our project is made up of a D.C. power source, an oscillator circuit(royer oscillator in our case) and a transmitter coil. ● The D.C. power source provides a constant D.C. voltage to the input of the oscillator circuit. There, this D.C. power is converted to a high frequency A.C. power and is supplied to the transmitter coil. ● The transmitter coil, energized by the high frequency A.C. current, produces an alternating magnetic field.

ROYER OSCILLATOR

FREQUENCY MODIFICATION
● The oscillator runs at the frequency determined by the inductance of the coil and the capacitor value ● The operating frequency is the familiar formula for resonance. ● W=1/sqrt(LC) ● F= 1/(2 × π × sqrt(LC)).

SIMULATION RESULTS

SIMULATION RESULTS

RECEIVER MODULE
● The receiver module of our project is made up of a receiver coil, a rectifier circuit and a voltage regulator IC. ● An A.C. voltage is induced in the receiver coil. The rectifier circuit converts it to D.C. and the voltage regulator IC helps to…...

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