3-Lesson_Notes_Lecture2_ee205 - EE 205 Dr. Chokri. Belhaj...

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EE 205 Dr. Chokri. Belhaj Ahmed - 1 - Electric Circuits II Balanced Three Phase Circuits Lecture # 02
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EE 205 Dr. Chokri. Belhaj Ahmed - 2 - Objective of this lecture is as follows : o Three-phase Voltage source connections. o The single phase equivalent circuit o The line voltage quantities for a balanced three phase circuits. o Complete Analysis of Y-Y circuit After finishing this lecture, you should be able to : ¾ Identify the difference between Y connected source and connected source. ¾ Extract the single phase equivalent circuit for Y-Y three phase circuit ¾ Deduce the line voltage quantities for positive and negatives sequences ¾ Conduct a complete analysis for Y-Y circuit.
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EE 205 Dr. Chokri. Belhaj Ahmed - 3 - Three-phase voltage source. The three phase source could be connected whether in or in Y. Figure 6 (a) Ideal three phase Y connected source. Figure 6 (b) Ideal three phase connected source. The load can be connected in Y or in and similarly to the source These two configurations are source connection and load connection
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EE 205 Dr. Chokri. Belhaj Ahmed - 4 - Three-phase voltage source (Cont) The load can be connected in Y or in and similarly to the source . Source Connection Load Connection Y Y Y Y Table 1. Source and Load Connection Types.
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EE 205 Dr. Chokri. Belhaj Ahmed - 5 - Three-phase voltage source (Cont) Three phase source model that includes winding impedance is for both connections is shown here The winding impedance represents the internal reactance and the internal resistance Figure 7(a) Y Connected Three Phase Source Model
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EE 205 Dr. Chokri. Belhaj Ahmed - 6 - Three-phase voltage source (Cont) Figure 7 (b) Connected Three Phase Source Model
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EE 205 Dr. Chokri. Belhaj Ahmed
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3-Lesson_Notes_Lecture2_ee205 - EE 205 Dr. Chokri. Belhaj...

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