Nowadays, with the increase in the cost of electric energy and on the other hand, the shortage of reserves and sources of energy supply, it is tried to design energy consuming systems in a way that their cost is optimized as much as possible. One of the methods that can lead to energy saving and optimization is the proper selection of high-efficiency consumer equipment and devices. In most countries, industries consume most of the electricity produced, and their electricity consumption is mainly done by electric motors. In recent years, new regulations on the efficiency of electric motors have been introduced around the world. One of the ways to reduce the energy consumption of motors is to lead the industry to use more efficient motors with higher efficiency.
The correct determination of the total losses in the induction motor has an important contribution to the more accurate estimation of the efficiency of the induction motor, and by removing low-efficiency motors from the workplace cycle, costs and energy waste are greatly reduced. Stray load losses are the most unknown element in the power balance of induction machines, and since these losses are of great importance in determining the efficiency of the induction motor, in this report, all available methods for determining stray load losses are briefly introduced and discussed. take