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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 />

AC <strong>Circuit</strong> Power Analysis<br />

Week #11<br />

Example:<br />

S 1 =<br />

50<br />

36.9<br />

0.8<br />

To <strong>ac</strong>hieve a PF of 0.95, <strong>th</strong>e total complex power<br />

must become:<br />

S<br />

50 1<br />

<br />

0.95<br />

50 <br />

cos<br />

j16.<br />

43<br />

Thus <strong>th</strong>e corrective load is<br />

<br />

50<br />

<br />

(0.95)<br />

kVA<br />

j37.<br />

5<br />

kVA<br />

Page 60<br />

S 2 =<br />

<br />

j21.<br />

07<br />

kVA

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