A major part of the generated electrical energy in the power systems is consumed by the electric machines to support the required mechanical energy for the clients in various applications such as pumps, oil and gas, household, electric vehicles, etc. In large scales, higher efficiency, reliability, and life time of the employed electric machines in the network results in less burnt fossil fuel in the generation stations. Accordingly, a lower amount of carbon dioxide emission is predicted in this case and less health problems related to the greenhouse gases emissions are expected.