ENE 104 Electric Circuit Theory - staff.kmutt.ac.th - kmutt
ENE 104 Electric Circuit Theory - staff.kmutt.ac.th - kmutt
ENE 104 Electric Circuit Theory - staff.kmutt.ac.th - kmutt
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<strong>ENE</strong> <strong>104</strong><br />
Complex Power:<br />
AC <strong>Circuit</strong> Power Analysis<br />
Page 56<br />
Week #11<br />
<strong>th</strong>e average power,<br />
P<br />
<br />
V I eff eff<br />
cos( )<br />
express as,<br />
P<br />
V<br />
eff<br />
I<br />
eff<br />
Re<br />
<br />
j(<br />
<br />
)<br />
<br />
j<br />
j <br />
*<br />
e Re V e I e Re V I <br />
eff<br />
eff<br />
eff<br />
eff<br />
<strong>th</strong>e complex power,<br />
S<br />
V<br />
eff<br />
I<br />
V<br />
I<br />
e<br />
* j(<br />
)<br />
eff eff eff<br />
<br />
P<br />
<br />
jQ<br />
Q<br />
<br />
V I eff eff<br />
sin( )
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