PNG University of Technology
Department of Electrical & Communications Engineering
EE324: Electric Machines & Drives Control
Assignment One
Name:
Date Due: 22.08.2023
Question One
The synchronous impedance of a 13.2-kVA, 440-V, Δ-connected, 3-phase
synchronous generator is 1 + j10 Ω per phase. Calculate the voltage regulation when
the generator supplies the full load at a power factor of;
a. 0.866 lagging
b. Unity
c. 0.866 leading
Question Two
Show the placement of a single-phase winding and winding connections for a 36-slot, 6-pole,
three-phase machine when it is;
a. Y-connected
b. Delta connected
Question Three
The no-load line voltage for a 6-pole, 72-slot, 1200-rpm, three-phase, Y-connected,
synchronous generator is 1,732 V. There are 10 conductors per slot. For a series connection,
determine;
a. The frequency of the induced emf.
b. The flux per pole