presentations/lightboard_cekim/why_3phase.html

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# WHY DO WE USE 3-PHASE POWER?

## Ozan Keysan

[keysan.me](http://keysan.me)

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## 3-Phase Power is Everywhere

<img src="https://cdn-images-1.medium.com/max/2000/1*6lCTsj6fN1y2nP_Y44Icqw.jpeg" alt="Drawing" style="width: 850px;"/>

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# WHY 3 PHASE? (but not 2 or 5?)
--

<img src="./images/3_phase.png" alt="Drawing" style="width: 700px;"/>


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# WHY 3 PHASE? (but not 2 or 5?)

<img src="./images/3phase_flow.gif" alt="Drawing" style="width: 700px;"/>

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## How much wire is required to transmit same power?

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# WHY 3-PHASE?
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- ## 3, 4, 5... phase systems use less wire than 2-phase systems
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- ## 3 is the smallest number to have this property (less installation cost compared to 4, 5... phase systems)

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- ## It is possible to generate a rotating field

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# Rotating MMF with a 3-phase system


<img src="./images/rotating_mmf.gif" alt="Drawing" style="width: 750px;"/>

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# Rotating MMF (Phasor Representation)


<img src="./images/rotating_phasor.gif" alt="Drawing" style="width: 550px;"/>

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# Rotating MMF (Phasor Representation)


<img src="./images/rotating_combined.gif" alt="Drawing" style="width: 800px;"/>


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