POLYPHASE AC CIRCUITS

Chapter 10 POLYPHASE AC CIRCUITS

Lessons In Electric Circuits Volume II – AC Book
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Lessons In Electric Circuits Volume II – AC Book

  • Chapter 10POLYPHASE AC CIRCUITSContents 288,10.1 288,Single-phase 288,power 288,systems . . . . . . . . . . . . . . . . . . . . . . . . . 279 294,10.2 294,Three-phase 294,power 294,systems . . . . . . . . . . . . . . . . . . . . . . . . . 285 300,10.3 300,Phase 300,rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291 305,10.4 305,Polyphase 305,motor 305,design . . . . . . . . . . . . . . . . . . . . . . . . . . . 296 310,10.5 310,Three-phase 310,Y 310,and 310,∆ 310,configurations . . . . . . . . . . . . . . . . . . . 301 317,10.6 317,Three-phase 317,transformer 317,circuits. . . . . . . . . . . . . . . . . . . . . 308 322,10.7 322,Harmonics 322,in 322,polyphase 322,power 322,systems . . . . . . . . . . . . . . . . . . 313 347,10.8 347,Harmonic 347,phase 347,sequences . . . . . . . . . . . . . . . . . . . . . . . . . 338 349,10.9 349,Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34010.1Single-phase power systemsloadload#1#2Figure 10.1: Single phase power system schematic diagram shows little about the wiring of a practicalpower circuit.Depicted above (Figure 288,10.1) is a very simple AC circuit. If the load resistor’s power dissipationwere substantial, we might call this a “power circuit” or “power system” instead of regarding it asjust a regular circuit. The distinction between a “power circuit” and a “regular circuit” may seemarbitrary, but the practical concerns are definitely not.279