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add power factor

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Akbar Rahman 2023-02-18 20:28:06 +00:00
parent a2e60d3eea
commit 1bf9a50a93
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uni/mmme/2051_electromechanical_devices/ac_power.md
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@ -8,6 +8,8 @@ lecture_slides: [ ./lecture_slides/MMME2051EMD_Lecture3B.pdf ]
exercise_sheets: [ ./exercise_sheets/Exercise Sheet 4 - Power factor and three phase.pdf ] exercise_sheets: [ ./exercise_sheets/Exercise Sheet 4 - Power factor and three phase.pdf ]
--- ---
This section builds on [introduction to AC](/permalink?uuid=0c90c691-cbf8-43e9-bfa5-7b277c853151).
# Definitions # Definitions
- Phase voltage - voltage across any phase - Phase voltage - voltage across any phase
@ -49,3 +51,7 @@ $$I_\text{line} = I_\text{phase}$$
$$|V_\text{line}| = |V_\text{phase}|$$ $$|V_\text{line}| = |V_\text{phase}|$$
$$I_\text{line} = \sqrt 3 I_\text{phase}$$ $$I_\text{line} = \sqrt 3 I_\text{phase}$$
# Power Factor (PF)
$$\text{PF} = \cos{\gamma} = \cos{\left(\Phi_v-\Phi_i\right)}$$