Evolutionary algorithm based in-situ efficiency determination on induction motors for the implementation of energy conservation schemes

Induction motor (IM) is considered as a major consumer of electrical power in any process industries. Efficiency and power factor of such machines are considerably reduced at light loads. Enhancement of cost effective energy conservation (EC) technology plays a significant role in these machines operating at light loads. In-situ efficiency determination is essential before taking any decision on implementation of EC. This paper determines the efficiency of IM without performing no-load test, which is not easily possible for in-service motors, by using evolutionary algorithms. Benefits of Star-delta (Υ-Δ) based EC scheme are estimated.