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AC Maximum Power

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asked Dec 16, 2015 in ELECTRICAL ENGINEERING by anonymous

1 Answer

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(1)

Maximum Power Transfer:

For any power source, the maximum power transferred from the power source to the load is when the resistance of the load image is equal to the equivalent or input resistance of the power source image.

Apply Thevinins theorem:

Find Thevinins equivalent impedance.

1.Open the load resistor.

2.Open Current Sources and Short Voltage Sources.

3.Calculate the Open Circuit Impedance. This is the Thevenin Impedance (image).

Redraw the circuit:

image

Observe the circuit:

image

image

image can be written in complex form as .

image

image can be written in polar form as image

answered Dec 16, 2015 by Lucy Mentor
edited Dec 16, 2015 by Lucy

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