Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Electric Circuits, Ninth Edition James.

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Presentation transcript:

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure 11.1 A basic three-phase circuit.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure 11.2 Phasor diagrams of a balanced set of three-phase voltages. (a) The abc (positive) sequence. (b) The acb (negative) sequence.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure 11.3 A sketch of a three-phase voltage source.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure 11.4 The two basic connections of an ideal three-phase source. (a) A Y-connected source. (b) A  -connected source.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure 11.5 A model of a three-phase source with winding impedance: (a) a Y-connected source; and (b) a  - connected source.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure 11.6 A three-phase Y-Y system.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure 11.7 A single-phase equivalent circuit.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure 11.8 Line-to-line and line-to-neutral voltages.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure 11.9 Phasor diagrams showing the relationship between line-to-line and line-to-neutral voltages in a balanced system. (a) The abc sequence. (b) The acb sequence.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure The single-phase equivalent circuit for Example 11.1.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure A single-phase equivalent circuit.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure A circuit used to establish the relationship between line currents and phase currents in a balanced  load.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure Phasor diagrams showing the relationship between line currents and phase currents in a  -connected load. (a) The positive sequence. (b) The negative sequence.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure The single-phase equivalent circuit for Example 11.2.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure A balanced Y load used to introduce average power calculations in three-phase circuits.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure A  -connected load used to discuss power calculations.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure The single-phase equivalent circuit for Example 11.5.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure The key features of the electrodynamometer wattmeter.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure A general circuit whose power is supplied by n conductors.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure A circuit used to analyze the two-wattmeter method of measuring average power delivered to a balanced load.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure A substation connected to a power plant via a three-phase line.

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure A single phase equivalent circuit for the system in Fig

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure P11.6

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure P11.8

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure P11.10

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure P11.17

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure P11.18

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure P11.20

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure P11.30

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure P11.31

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure P11.39

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure P11.41

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure P11.46

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure P11.48

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure P11.50

Copyright ©2011, ©2008, ©2005 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electric Circuits, Ninth Edition James W. Nilsson Susan A. Riedel Figure P11.51

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