This is page 1; there are 6 pages, stapled. Given Machine X:
**THREE-PHASE SYNCHRONOUS MACHINE DATA: MACHINE H6NS * Ratings Line Voltage 13.80 kV; 3ph MVA = 100.0 MVA Stator Frequency = 60 Hz; Rotor Type: NONSALIENT Synchronous Speed = 1800.0 rpm = 188.5 rad/s No. of Poles = 4; dc Excitation Voltage = 500.0 volts
** Equivalent Circuit Values (R, X in ohms) *** Ra = 0.0095 KRL = 0.0281 kNms/rad; PRL = 1000.0 kW X1 = 0.1904; Rf = 0.5000 = pX 2.095 = bx 2.095 Note: If machine is NONSALIENT, Xd = Xq = Xs. OCC @ 1800 rpm: If = Ef/Kag + Ax * exp(Bx * Ef) Kag = 33.2 ohms; Ax = 0.595 A; Bx = 0.000464 V-1. Linearized OCC @ 1800 rpm: If = Ef/30.18
Page 2 (Top). Draw a large (half-page) graph on which is plotted the OCC (0 < E < 20 kV; 0 < If < 2 kA) and the air-gap (ag) line.
Page 2 (Bottom). On the left, draw the stator equivalent circuit labeling all values (symbols, no numbers, generator coordinates). On the right, draw the stator equivalent circuit using motor coordinates. Below the stator circuits, draw the rotor equivalent circuit, labeling all values (symbols, no numbers).
Page 3 (Top) Write "Generator Lagging Case" (highlight case in yellow). The stator is operating at rated conditions, pf = 0.866. Draw the stator phasor diagram, with all numerical values thereon. Compute all rotor field values; the output 3-ph power; all power losses; input power; and efficiency; and all torques (3).
Page 3 (Bottom) Repeat for the Generator Leading Case.
Page 4 (Top): Repeat for the Motor Leading Case.
Page 4 (Bottom): Repeat for the Motor Lagging Case.
Page 5. A handout H7Solution.pdf is available at our ftp site: include as page 5. Check all your answers with hand calculations substantially agree with H7Solution.pdf". Explain why your results don't exactly check, and show the largest discrepancy.
Page 6 (Top) Write "Salient Pole Generator Lagging Case". Consider Machine Y, identical to Machine X, except that Ra = 0.0, and the rotor is salient, such that Xq = 1.309. The stator is operating at rated conditions, pf = 0.866 lagging. Draw the stator phasor diagram (symbols only, no numbers) for the generator lagging case with all phasor voltage and current values thereon (symbols only, no numbers).
Page 6 (Bottom) Repeat the phasor diagram, except this time provide numerical values for all phasors.