High efficiency 7.5 kw asynchronous motor design

Environmental pollution is increasing due to the rapidly increasing population and industrialization in the world. One of the reasons for this situation is low-efficiency fossil fuel engines. In response to this, highly efficient, environmentally friendly, low-cost, low-maintenance electric motors are increasing in importance day by day and are becoming increasingly widespread. Electric motors are widely used in automobiles, elevator systems, white goods and the industrial sector. Although asynchronous motors, which are used in a wide area, are highly efficient compared to fossil fuel motors, there is no theoretical limitation in terms of their efficiency. Each increase in efficiency achieved significantly reduces the energy needs of countries. This situation directs research and development efforts to make electric motors more efficient. This study takes as reference the 7.5 kW, 4-pole, 3-phase, squirrel-cage, single-cage rotor model of the induction motor in the IE3 efficiency class. It aims to optimize the efficiency and starting torque of the same asynchronous motor by designing it in the Finite Element Method with double-cage rotor modeling. In the engine designed using the Finite Element Method, the rotor slot shape was modeled and examined. In the examination; Starting values, torque, current, losses and efficiency values were obtained and the results were compared. As a result, an optimum design was obtained.