- The negative sequence voltage source consists of a balanced set of voltages, 120 degrees out of phase.
- however for a negative sequence set phase b leads phase a.
- that means that the rotating field created by the negative sequence source will rotate in a direction opposite to the rotating field created by the positive sequence source.
we can analyze the impact of imbalances by applying superposition with the symmetrical component circuits since they are decoupled.
- the positive sequence circuit is the same circuit we looked at for balance conditions as shown below in Fig. 14