Ch4-4 - 第第第 第第第第第第第第...

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Unformatted text preview: 第第第 第第第第第第第第 第第第第第第第第第第第 第第第第第第第第第第第 第第第第第第第第第第第 i 1 U • 2 U • 1 Z 2 Z • U 2 1 U U U • • • + = ) ( 2 1 2 1 Z Z I Z I Z I + = + = • • • • Z I = 2 1 Z Z Z + = 第第第第第第第第第 Z Z Z + = 2 1 第第第第第第 • • • Z + = = U Z Z Z I U ) ( 2 1 1 1 1 Z Z ) ( 2 1 • • • + = = U Z Z I U 2 2 2 第第 第第第第第第第第第 2 1 1 1 1 Z Z Z + = 1 I • 2 I • 1 Z 2 Z • U • I 第第第第第 • • • • + = = = I Z Z Z I Z Z Z U I 2 1 2 1 1 1 • • • • + = = = I Z Z Z I Z Z Z U I 2 1 1 2 2 2 2 1 2 1 Z Z Z Z Z + = 第第第第第第第第第第第第 第第第第第第 第 n Z Z Z Z 1 1 1 1 2 1 + + • • • ‥‥ ‥ + = 第第 R 1 =100Ω 第 R 2 =1000Ω 第 L=2H C =10μF 第 , 第 u 、 i 第 第 第 A ) 60 t 314 sin( ° + = C i R 2 L u i R 1 第第 C i C i L İ Cm = 1 60° ∠ 第第第第第第 C L 2 L 2 m Cm jX ) jX R ( jX R I I- + + = • • L 2 C L 2 Cm m jX R jX ) jX R ( I I +- + = ∴ • • X C = 318Ω X L =628Ω 628 j 10 310 j 10 60 1 I 3 3 m + + ° ∠ = ∴ • = 0.89 45.1 ∠ °A ( 29 C L 2 L 2 C 1 jX jX R jX R jX R Z- + +- + = = 100 第 357 ∠ 第 75.1 ° = 395 ∠ 第 61 ° °- ∠ = = • • 9 . 15 351 Z I U m m A ) 1 . 45 t 314 sin( 89 . ° + = i V ) 9 . 15 t 314 sin( 351 °- = u 第第第 第第第第第第第第第第第 X 2 u R 1 X 3 X 1 1 I • 2 I • 3 I • 第第 ° ∠ = • 100 U ab 设 a b Z 1 =jX 1 +R 1 =j10+2 Z 2 =jX 2 =j10 Z 3 = 第 jX 3 = 第 j5 Z ab =Z 2 Z ∥ 3 = 第 10j =10 ∠ 第 90° U ab =I 1 · z ab =10×10=100V 第 第 第第 R 1 =2Ω 第 X 1 =X 2 =10Ω 第 X 3 =5Ω I 1 =10A 第第 İ 2 、 İ 3 、 U 、 cos φ 第 P 第 Q 第 S 第 · °- ∠ = ° ∠ = = • • 90 10 10 j 100 Z U I 2 ab 2 ° ∠ =- ° ∠ = = • • 90 20 5 j 100 Z U I 3 ab 3 ab 1 3 2 ab 1 1 U Z I I U Z I U • • • • • • + + = + = =( 第 j10+j20)(2+j10)+100 = 第 100+j20+100=j20=20 90° ∠ İ 1 = j10 =10 90° ∠ ∴ φ = 0, cos φ = 1 P=UIcos φ =10×20×1=200W Q= UIsin φ =10×20×0=0 Var S=UI=200 VA 第 第 第第 U=100V, ω=314r ad/ s , I=I C =I L , 第第 第第第第 P=866W 第第第...
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Ch4-4 - 第第第 第第第第第第第第...

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