CH7
SINUSOIDAL STEADY-ANALYSIS
7.1 Sinusoidal steady-analysis 7.2 AC Power analysis
7.1 Sinusoidal steady-analysis
Steps to Analyze AC Circuits:
1. Transform the circuit to the phasor
domain.
2. Solve the problem using circuit
techniques (nodal analysis, mesh analysis, superposition, etc.). 3. Transform the resulting phasorto the
time domain.
?
∑I=0??
?U=ZI
∑U=0
Nodal Analysis
10Ω
j4Ω
Find ix
20∠0V10ΩoIxU1
?
??j2.5Ω
2Ix?
?j2Ω
j4Ω
U2
Ix
20∠0V
o
?
?j2.5Ω
2Ix
?
j2Ω
SolveUo
?
Uo
?
SolveUo
?
Mesh Analysis
I3
?
?
I4
?
?
I3
4∠0A
o
I4
10∠0V
o
I1
?
Uo
?
I2
?
3∠0A
o
CH07-Sinusoidal Steady Analysis - 图文
CH7SINUSOIDALSTEADY-ANALYSIS7.1Sinusoidalsteady-analysis7.2ACPoweranalysis7.1Sinusoidalsteady-analysisStepstoAnalyzeACCircuits:1.Transformth
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