3-phase slides

3-phase slides - (a) Basic ac genflratnr (13) Voltage...

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Unformatted text preview: (a) Basic ac genflratnr (13) Voltage wavefonn (a) Basic 3-phase generator (b) Voltage waveforms (c) Phasors + EM Q Izfl A’ u’ H —I- 1H b _|_ Egg Q [2!] 5" if C *1: a; _|_ Em Q R 1251 C" H (a) First thoughm IC = IA = 10 A10“ [3 = AKA—120D (b) Currents form a balanced set 1C) 4—Wire 3y51em. The return wire is called the neutral (d) Renamed phasors (a) 4-wira Y-Y ayatam. This is. Figure 24-3(C) redrawn in standard farm (b) 3-wire Y-Y system [a] 1"er 11 ‘I’. phnfits rm: duj'incd t'mm lim: m nuulml Eh: I’m 1.: fl. phimm; 5m: dul'intd 1mm linn: 1U Iil'li: (a) Shawing graphically why Vflb leads Van by 30” (b) Beth line voltages and phase voltages form balanced sets Vm = 120 3,1120” 3' = 203 33,1303 3m = 203 V4150“ “‘5 m = 203 32—90” (b) [c) Beth line currents and phase currents form balanced sets ...
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3-phase slides - (a) Basic ac genflratnr (13) Voltage...

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