Description

7. Induction Machine Operation under unbalanced power supply

Frequently, the voltage supply given to machines is unbalanced. Unbalance can be generated in a variety of ways - the magnitudes may not be the same across all phases, or there may be in addition an unbalance in phase also. For a xed positive sequence in supply voltage and negative sequence varying from 0 to 10%, how does the performance of the machine get aected?