Assessment of induction motor performance under supply voltage unbalance: A review

Voltage unbalance crafts various ailing consequences on three phase induction motor (IM). In this paper, various existing methods for the assessment of the performance induction motor under the supply voltage unbalance have been critically reviewed to highlight their shortfalls. It has been revealed that, none of the existing methods are found proficient in the assessment of the performance of IM under the condition of supply voltage unbalanced. Further, various mitigation techniques, to reduced the cost of downtime associated with voltage unbalance, have been also discussed and it has been found that most of mitigation techniques are tentative approaches of several researchers which do not gain that much popularity, but fast-acting power electronic circuits like Static VAR Compensators (SVC) and active line conditioners are some of the incredible efforts which shows significant results.