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Electrical Power System SMJE 2103 The Importance of Electrical Power • Importance in daily live • Importance in industrial • Importance in security • Importance in infrastructure • Importance in conversion energy The energy is considered to be superior with others according to some proofs. Please list and discuss the proof. Fundamental of Electrical Power • • • • • • DC Circuit AC Circuit Phasor Diagram AC Power Power Measurement Power Factor DC Circuit DC Circuit DC Circuit AC Circuit -Series- AC Circuit -Series- AC Circuit -Series- AC Circuit -Parallel- AC Circuit -Parallel- AC Circuit -RLC- AC Circuit -RLC- AC Circuit -RLC- AC Circuit -RLC Analysis- AC Circuit -RLC Analysis- Phasor Diagram Phasor Diagram Phasor Diagram AC Power • 𝑣 𝑡 = 𝑉𝑚 𝑐𝑜𝑠 𝜔𝑡 + 𝜃𝑣 • 𝑖 𝑡 = 𝐼𝑚 𝑐𝑜𝑠 𝜔𝑡 + 𝜃𝑖 Please proof to get the following: • 𝑃 = 𝑉 𝐼 𝑐𝑜𝑠𝜃 • 𝑄 = 𝑉 𝐼 𝑠𝑖𝑛𝜃 • 𝑆= 𝑉 𝐼 AC Power -Power Triangle- Power Measurement Power Measurement Power Measurement Power Measurement Power Factor Power Factor Power Factor Power Factor Correction Power Factor Correction Power Factor Correction Power Factor Correction Tutorial Let a 100V sinusoidal source be connected to a series combination of a 3Ω resistor, an 8Ω inductive reactance and a 4Ω capacitive reactance. (a) Draw the circuit diagram (b) Compute the series impedance (c) Determine the current I delivered by the source (d) Is the current lagging or leading the source voltage? (e) What is the power of this circuit?
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