Using the data of Problem 3.35 and Figure P3.35, a. Determine the number of meshes. b. Compute the mesh currents. c. Use the mesh currents to determine .
The circuit shown in Figure P3.35 is a simplified DC version of an AC three-phase wye-wye (Y-Y) electrical distribution system commonly used to supply industrial loads, particularly rotating machines.
VS1 = VS2 = VS3 = 170 V
Rw1 = Rw2 = Rw3 = 0.7?
R1 = 1.9? R2 = 2.3?
R3 = 11?
a. Determine the number of non-reference nodes.
b. Determine the number of unknown node voltages.
c. Compute v'1, v'2, v'3, and v’n.
Notice that once v’n is known the other unknown node voltages can be computed directly by voltage division.
Known quantities:
Find:
The number of meshes, the mesh currents and V’n.
Analysis:
There are two meshes. Call the upper mesh I1 and the lower mesh I2. Both meshes are clockwise.
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