Xc makingthissimpler makingthissimpler max max imaxz

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Unformatted text preview: Making this simpler… Making this simpler… εmax L R Imax R Imax XL εmax = Imax Z max Imax R Imax XC C Imax(XL­XC) Imax R Imax XL Imax XC Making this simpler… Making this simpler… εmax C L R Imax R εmax = Imax Z max Imax(XL­XC) Imax R Imax XL Im a x XC Making this simpler… Making this simpler… εmax εmax = Imax Z max Imax R (XL­XC) φ Impedance Triangle L R Im a x R Imax(XL­XC) φ C R XL − XC tan ( φ ) = R Im a x XL Imax XC Summary: Summary: VCmax= Imax XC C εmax VLmax= Imax XL L Imax XL R VRmax= Imax R εmax = Imax Z max = Imax R Imax = εmax / Z max / Z Z = R +( X L − XC ) 2 XL −XC tan ( φ ) = R 2 ( XL­XC) φ R Example: RL Circuit Xc=0 Example: RL Circuit X εmax L R Imax R Imax XL εmax Imax R Imax XL Preflight 2 BB Draw Voltage Phasors Imax XL εmax Imax R A B C “Since VR and VL are out of phase from each other and the voltage of the generator is the vector sum of the voltages, VR and Vgenerator are out of phase. “ “The presence of the inductor has nothing to do with the fact that Vg and Vr will ALWAYS be in phase. “ 60 50 40 30 20 10 0 Preflight 4 BB Draw Voltage Phasors Imax XL εmax Imax R A B C 70 60 50 40 30 20 10 0 Preflight 6 BB The CURRENT is THE CURRENT Imax XL φ A B C D “current is current NUFF SAID” Imax R φ is the phase between generator and current 50 40 30 20 “The resistor will be in phase with the current, whereas the inductor will lead the current by 90 degrees.” εmax 10 0 Preflight 8 BB A B C What does the voltage phasor diagram look like when the current is a maximum? IXL ε IR ε 50 40 IR 30 20 IX...
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This document was uploaded on 02/13/2014.

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