Electric motors of large consumer products, challenges and trends from the perspective of power efficiency improvement through modern cutting technologies

Electrical motors are indispensable components in numerous large consumer goods, most notably home appliances, besides electronic circuitry and mechanical parts. Their large extent in use arises several important challenges to be addressed in a fiercely competitive globalized marked, like production costs vs. intrinsic product quality and performance, including here energy efficiency, as one of the most important factors. Several reasons to be reviewed in our present work lead to adopted standards and regulation to provide an effective and proactive answer to the problem. Then, the study focuses on reviewing one of the main sources of overall efficiency degradation, namely energy steel losses, analyzed through specific methods and illustrated with comprehensive experimental results. Apparently insignificant, small energy consumption reduction may globally provide an important impact on large consumer goods, manufactured on an industrial scale. Finally, conclusions are drawn to envisage further trends and material investigative methods for electrical machines manufacturing, especially from the perspective of generalization of IE4 efficiency standard.