VA

VB

VC

VA1 = V1

VB1 = a2V1

VC1 = aV1

Unbalanced Vectors

Positive-SequenceComponents

Negative-SequenceComponents

VA2 = V2

VB2 = aV2

VC2 = a2V2

Zero-SequenceComponents VA0 = VB0 = VC0 = V0

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Combination of the three symmetrical component sets ofvectors to obtain the original unbalanced vectors

VB

VA

VC

VA1

VA2

VB1VB2

VC1VC2

V0

Useful formulas:a = 1120a2 = 1240

3V0 = VA + VB + VC3V1 = VA + aVB + a

2VC3V2 = VA + a

2VB + aVC

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