Chương 6.19 3000000 25.84 524.86 25.84 3300 3300 Ear 1.5 j 524.86 25.84 2357.4117.5 3300 2357.41 sin(17.5) e T 14330n m 1.5 60 Ia 6.20 a) m 40 900000 225.92 2300 2300 Ear, m j 225.92 1402 18.8 2300 1402 sin(18.8) e T 7161.61n m 40 Im b) I l 200 45 Ia 200 45 225.92 393.6 21 PF 0.93lagging 2300 P jQ 39321 1463383 563382 j 6.21a) Ear Va sin 250000 1.2 sin 0.685 550 Xs ) 460 3 ( 43.2 250000 Te 1326.29 60 Pt b) 46043.2 (550 ) 262.83 3.23 1.2 j PF 0.998lagging Ia 550 262.83 sin(3.23) 14107VAr 2300 Ear 1.6 j 369.86 j 1919.68 6.11 a) Ta có điên áp pha Q Va 230 132.79(V ) 25000 Ia 62.76( A) 132.79 Ia 62.76 arccos 0.8 62.76 36.87 A Ear j Xs Ia Va 1.5 j 62.76 36.87 132.790 203.721.7V b) Ear, new Ear , old Ir , new Ir , old Ear, old Ear, new Ir , new Ir , old mà Ir , new 1.2 Ir , old Ear, new 203.7 1.2 244.44V imf ( Ear, new) imf ( Ear, old ) 203.7 sin(21.7) new arcsin 17.946 244.44 244.4417.946 132.79 Ia, new 83.33 52.95 A 1.5 j 6.12 a) 2000 1154.7V 900000 300000W P1 pha 300000 Ia 288.68 A 1154.7 0.9 Ia 288.68 25.84 Va 400 115.47 A 23 I l Ia Im 288.68 25.84 115.47 191.49 41.08 A Im b) 120 60 p Ns 1800 Ns 120 1800 60 ( mech) m 60 2000 Ear, m 10 j 115.47 1633 45 Ear Va sin(45) 2122 Te 10 60 f c) cos 300000 Ia 259.81 1154.7 Im Ia I l 259.81 191.49 41.08 170.7847.46 Ear, m 1154.7 10 j 170.7847.16 2675 25.57 6.14 a) Il 2600000 arccos 0.87 750.18 29.54 A 2300 0.87 b) Im 750.18 sin(29.54) j 369.86 j ( A) Ia 750.18 cos(29.54) 652.67 A c) Ear 6.15 2300 1.6 j 369.86 j 1919.68 a) 45000 36.87 156.13 36.87 A 208 0.8 208 0.6 j 156.13 36.87 A 98.47 49.5V Ear Im b) p Ns 120 60 Ns 900 120 900 m 30 ( mech) 60 Te max Pt max, pt max Ear.sin( ) max, tức imf( 0.6 j Im )max, => Im có phần thực, f điếu xảy PF=1 45000 124.9 208 208 Ear 0.6 j 124.9 141.55 31.96 Ear Va sin(31.96) Te 477.3 0.6 30 Im 6.17 a) 120 60 p Ns 1200 Ns 120 1200 40 (mech) m 60 87000 3000 716.2 T e total 40 87000 692.3 T e ml 40 f b) Pt total 90000 Ear sin Ear có phần ảo PF trễ nên 90000 10 225.92 2300 3 Ear B 225.92 j I l 20 36.87 Im A 12 j 2300 Ear 10 j ( A 12 j ) B 225.92 j B 1447.9 Ear 1465.41 8.87 6.18 a) Il 2600000 arccos 0.87 750.18 29.54 A 2300 0.87 b) Im 750.18 sin(29.54) j 369.86 j ( A) Ia 750.18 cos(29.54) 652.67 A c) Ear 2300 1.6 j 369.86 j 1919.68 6.19 3000000 25.84 524.86 25.84 3300 3300 Ear 1.5 j 524.86 25.84 2357.4117.5 3300 2357.41 sin(17.5) e T 14330n m 1.5 60 Ia 6.20 a) m 40 900000 225.92 2300 2300 Ear, m j 225.92 1402 18.8 2300 1402 sin(18.8) e T 7161.61n m 40 Im b) I l 200 45 Ia 200 45 225.92 393.6 21 PF 0.93lagging P jQ 2300 39321 1463383 563382 j 6.21a) Ear Va sin 250000 1.2 sin 0.685 550 Xs ) 460 3 ( 43.2 250000 Te 1326.29 60 Pt b) 46043.2 (550 ) 262.83 3.23 1.2 j PF 0.998lagging 550 262.83 sin(3.23) 14107VAr Q Ia 6.1/ Máy điện đồng 120 f 1800 p 2 N s m 60 60 Ns PT 250.103 (W ) 3EaVa sin 1, sin 0,6846 43, 20 P T e T 1326 Nm m b/ Ear 46043, Ear Va 262,83 3, 23 A j1, 3, 23 cos 0,998 lagging Ia 3.550 0 262,833, 23 249982 j14107 kVA Q 14107kVA * T 3Va I a 6.2/ a/ Va 132700 * PT 3Va I a 1500 j300 I a 0,384 11,3.103 384 11,30 A I am I a I L 384 11,30 250 450 244, 2715, b/ PF of the motor : , cos 0,9626 leading c/ Ear Va jX s I a 1327 j.2.384 11,3 1396,9 32,6 V 6.3/ a/ 120 f p Ns PT 250.103 W 3Va Ear sin xs sin 0,846 43,0250 b/ 550 46043,025 0 Eas X a Ia jX s j1, 314,58 3, 420 PT 3Va I a cos cos 0,834 * STz 3Va I a 550 314,883, 420 6.4/ 120 f 1500 rmp p 2 N s m 60 rad / s 60 Va 1905, 25500 V Ns * 3Va I a 1000 kVA I a 175 A I a 175 36,870 A Ear jX s I a Va 2015400 V PT 1000.103.0,8 8.105 Te 6.5/ 3.Va Ear sin sin 0, 06946 3,980 PT m 8.105 4244 Nm 60 120 f 360rmp p 2 N s m 12 rad / s 60 cos 1, Va 1327 V Ns I a 201 A Ear Va jX s I a 1386,5 16,850 V 800.103 21220 Nm T 12 6.6 / a/ PT e Va 3810 V 120 f 720rmp p 2 N s 24 rad / s m 60 Ia 9536,870 A Ns Ear Va jX s I a 3810 j15.9536,87 4802, 27 13, 73 A PT 3Va Ear sin Xs PT 3Va I a 0, 868, 68.103 W sin PT 0, 2374 3V Ear 13, 740 P T e T 11524 Nm m b/ Công suất phảng kháng từ nguồn là: Q c/ PT 651, 6.103 VAR 0,8 6.7/ a/ PT 33kW 3Va Ear sin Xs Ear 220 30 Ia motor I a Ear 127 220 30 10030 jX s j1, 27 PF of motor 0,866 leading b/ I a I L 50 450 100300 122,836,840 A cos 6,84 0.993, leading 6.8/ a/ 120 f 300 rmp p 2 N s 10 rad / s m 60 Va 1963 V Ns I a 1360,5 A Ear Va jX s I a 2388, 434,7 V Te PT m 254648 N m b/ Eas 2388, 434,7 sin X s PT 0,5688 3Va Ear 34, 660 c/ I r new 1, I r old Ear new I r new E old I r old Ear new 1, Ear sin new sin 0, 474 1, 28, 290 Ia Ear new Va jX s 1678 13,550 6.9/ a/ 120 f 1200 rmp p 2 N s 40 rmp m 60 Ns T e machanical load : PT m 87kW 692,3 N m 40 T e rlectrical origin : PT losses 40 90kW 716, N m 40 6.10/ a/ PT 3Va Ear sin Xs sin 0,6846 43, 20 b/ Ia Ear Va 263 3, 230 jX s cos 0,998 lagging * ST 3Va I a 250 j14,116 c/ I anew 263 36,870 A Ear Va I a jX s 566,326, 477 kVA [...]...c/ I r new 1, 2 I r old Ear new I r new E old I r old Ear new 1, 2 Ear sin new sin 0, 474 1, 2 28 , 29 0 Ia Ear new Va jX s 1678 13,550 6.9/ a/ 120 f 120 0 rmp p 2 N s 40 rmp m 60 Ns T e machanical load : PT m 87kW 6 92, 3 N m 40 T e rlectrical origin : PT losses 40 90kW 716, 2 N m 40 6.10/ a/ PT 3Va... e rlectrical origin : PT losses 40 90kW 716, 2 N m 40 6.10/ a/ PT 3Va Ear sin Xs sin 0,6846 43, 20 b/ Ia Ear Va 26 3 3, 23 0 jX s cos 0,998 lagging * ST 3Va I a 25 0 j14,116 c/ I anew 26 3 36,870 A Ear Va I a jX s 566,3 26 , 477 kVA ... 524 .86 25 .84 23 57.4117.5 3300 23 57.41 sin(17.5) e T 14330n m 1.5 60 Ia 6 .20 a) m 40 900000 22 5. 92 2300 23 00 Ear, m j 22 5. 92 14 02 18.8 23 00 14 02. .. 90000 10 22 5. 92 2300 3 Ear B 22 5. 92 j I l 20 36.87 Im A 12 j 23 00 Ear 10 j ( A 12 j ) B 22 5. 92 j B 1447.9 Ear 1465.41 8.87 6.18 a) Il 26 00000 ... 43 .2 250000 Te 1 326 .29 60 Pt b) 46043 .2 (550 ) 26 2.83 3 .23 1 .2 j PF 0.998lagging 550 26 2.83 sin(3 .23 ) 14107VAr Q Ia 6.1/ Máy điện đồng 120 f 1800 p 2 N s