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What are various impedence in any machine

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What are various impedence in any machine..

Answer / vivek

in a synchronous machine , there are three kinds of impedences

1. Xd - synchronous reactance ; (used in steady state
modelling )
a special case is salient pole machines where sync impedence
is split into direct axis impedence and quadrature axis
impedence , ie Xd and Xq . see double reactance theory for
more details
2. Xd' - transient reactance ;(used in transient modeling)
3. Xd'' - subtransient reactance .

all other machines have three kinds of impedences which are
used in power system modelling
1. positive sequence impedence
2. negative sequence impedence
3. zero sequence impedence

Is This Answer Correct ?    24 Yes 0 No

What are various impedence in any machine..

Answer / r

for a syn machine - syn impedance
fictious impedance
load impedance
normal case - input impedance
output impedance
transmission lines- surge impedance
load impedance

Is This Answer Correct ?    10 Yes 3 No

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