11. Given two machines, one synchronous and one induction Mach A: 34SM 2.4 kV 60 Hz 1000 kVA X=62 K = 0 Mach B: 34M 2.4

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11 Given Two Machines One Synchronous And One Induction Mach A 34sm 2 4 Kv 60 Hz 1000 Kva X 62 K 0 Mach B 34m 2 4 1 (56.53 KiB) Viewed 49 times

11. Given two machines, one synchronous and one induction Mach A: 34SM 2.4 kV 60 Hz 1000 kVA X=62 K = 0 Mach B: 34M 2.4 kV 60 Hz 200 kVA K = 0 R1 <=0; R2 = 0.6 02: x1 = 2.6 02: X2¹-2.69: X-LARGE The machines are connected to the same shaft and supplied from the same source as shown If SWA is closed, Mach A is synchronized. Mach A SWA 34SM With SWA closed and SWB open, the shaft rotates at 720 rpm, CCW. With SWA open and SWB closed, the shaft rofales at 600 rpm, CCW 34 2400 V 60 Hz Source Mach A has how many poles? Mach B has how many poles? SWB Mach B 3pM With SWA closed and SWB open, the Mach A current () is 100 A p=00 leading (motor coord). The internal stator voltage E, (in volts) is 786 circle one) 1386 1800 1986 2400 3000 120 600 660 720 1320 0.1667 0.2 Now close SWB. The shaft speed (rpm) is: (circle one) -0.2 -0.1667 (circle one) The slip for Mach B Mach B Operating mode (M, G, B) of Mach A Do not continue past this point without having DrG check your answers! SWA and SWB are closed and Er is unchanged for the rest of the problem. Complete the positive sequence circuit diagram (all components evaluated) Define and evaluate the (pos seq) currents (A,B,S) Find the 34 stator output/input powers for Mach A, Mach B, and the Source Mach B Mach A 1386 O Source 96 132 155 231 478 574 (circle one) 96 132 155 231 478 574 (circle one) 96 132 155 231 478 574 (circle one) 96 132 155 231 478 574 (circle one) 96 132 155 231 478 574 (circle one) 96 132 155 231 478 574 (circle one) IA (A) IB (A) Is (A) PA (KW) PB (kW) Ps (kW)