Finite Element Study of the Stray Load Losses in an Induction Motor —

The limitation and reduction of greenhouse gas emissions as well as an efficient energy use become an essential issue for our society. One of the most convenient solutions to develop global energy saving consists in increasing the efficiency of electrical motors. In fact, half of the electric energy produced in the world is used in the industry and approximately two thirds of this power consumption are due to electric drives [1]. Thus, a few percentage improvements in motor efficiency would results in a considerable saving of fossil energy. In order to achieve this goal, efficiency classes have been defined for electrical machines, especially for induction machines that are widely used in the industry [2]. Therefore, it becomes necessary to estimate their losses and efficiency right from the design step in order to fulfill the standard requirements.