CH8 MAGNETICALLY COUPLED
CIRCUITS
8.1 Mutual inductance
8.2 Involving mutual inductance
circuits analysis8.3 T equivalent circuit 8.4 Linear transformers8.5 Ideal transformers
Conductive coupled Magnetically coupled Transformer Air-core transformer Ideal transformer
8.1 Mutual inductance
一、Mutual inductance
magnetically coupled
?11?21
i1N1+u11
–N2+u21
–Mutual voltageMagnetic linkage: ?11=N1?11, ?21=N2?21
dΦ11dΨ11dΦdΨ2121u11?N1?, u?N? 212dtdtdtdt?11?21
i1N1+u11
–N2+u21
–L1??11i1i1 (self-inductance)(mutual inductance)
M21??21dΨ11?Ldi1 u11?1dtdtdi1dΨ21 u21? ?M21dtdt?12
N1+u12
–i2N2+u22
–?22
dΦ22dΨ22di2Ψ22u22?N2? ?L2 ,(L2?)dtdtdti2dΦ12dΨ12di2Ψ12u12?N1 ??M12 ,(M12?)dtdtdti2M12= M21= M
CH08-Magnetically Coupled Circuits
CH8MAGNETICALLYCOUPLEDCIRCUITS8.1Mutualinductance8.2Involvingmutualinductancecircuitsanalysis8.3Tequivalentcircuit8.4Lineartransformers8.5Idealtra
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