- #1
jaus tail
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I'm studying Auto Transformer phasor diagram, and am having some doubts. I'd be grateful if someone could help me out with them.
Book has equation:
I understand that using Kirchoff's law we get minus sign for (I2 - I1) term, but shouldn't it be positive as per concept?
Negative sign means the mmf of (I2 - I1) aids the source, which can't be.
It is V1 that is eventually providing I2 So I2 has to oppose V1 and not aid it.
I understand that using KVL sign conventions we get the above equation with the signs above, but conceptually shouldn't (I2-I1) oppose V1
Doubt#2: And in the phasor diagram here:
They've added the terms V1 = E1 + I1R1 + I1X1 + (I2-I1)R1 +(I2-I1)X1
Shouldn't the direction of I2-I1 be upwards when added with E1?
SInce we're adding -(I2-I1)(R1)
So if (I2-I1)R1 is facing south then the negative of it must face north.
Book has equation:
I understand that using Kirchoff's law we get minus sign for (I2 - I1) term, but shouldn't it be positive as per concept?
Negative sign means the mmf of (I2 - I1) aids the source, which can't be.
It is V1 that is eventually providing I2 So I2 has to oppose V1 and not aid it.
I understand that using KVL sign conventions we get the above equation with the signs above, but conceptually shouldn't (I2-I1) oppose V1
Doubt#2: And in the phasor diagram here:
They've added the terms V1 = E1 + I1R1 + I1X1 + (I2-I1)R1 +(I2-I1)X1
Shouldn't the direction of I2-I1 be upwards when added with E1?
SInce we're adding -(I2-I1)(R1)
So if (I2-I1)R1 is facing south then the negative of it must face north.