{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,9]],"date-time":"2026-04-09T20:04:49Z","timestamp":1775765089761,"version":"3.50.1"},"reference-count":28,"publisher":"Universidade Estadual de Londrina","license":[{"start":{"date-parts":[[2026,2,23]],"date-time":"2026-02-23T00:00:00Z","timestamp":1771804800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Semin., Exact Tech. Scienc."],"abstract":"<jats:p>The growing demand for efficiency, decarbonization, and sustainability has placed electric motors at the forefront of industrial innovation, driving the need for high performance with minimal size and enhanced energy efficiency. Since motors lose energy mainly as heat through Joule losses in the stator and rotor, effective cooling is essential to achieve higher power density without compromising performance. This study investigated heat transfer in IC511 motors with tube cooling systems using analytical and numerical approaches. The analytical study showed that higher airflow speeds consistently improve cooling, with fan type and rotational speed having the greatest impact, while tube length, diameter, and operating temperatures were less influential. Numerical simulations revealed that front deflectors reduced heat transfer by 21%, the use of Variable Speed Drive operation at low speeds decreased it by 15% to 71%, and smaller fans caused a 26% reduction, whereas end shield modifications improved cooling by approximately 6%, and removing up to 24 tubes maintained heat removal, suggesting cost-saving potential. Overall, the study advances understanding of thermal behavior in tube-cooled motors and identifies critical design parameters to optimize performance and sustainability.<\/jats:p>","DOI":"10.5433\/1679-0375.2026.v47.53878","type":"journal-article","created":{"date-parts":[[2026,4,9]],"date-time":"2026-04-09T19:04:41Z","timestamp":1775761481000},"page":"e53878","source":"Crossref","is-referenced-by-count":0,"title":["Numerical and Analytical Study of an Electric Motor Cooling System","Estudo Num\u00e9rico e Anal\u00edtico de um Sistema de Arrefecimento de um Motor El\u00e9trico"],"prefix":"10.5433","volume":"47","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-8493-6428","authenticated-orcid":false,"given":"Miguel","family":"Costa","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2825-0709","authenticated-orcid":false,"given":"Alexandre M","family":"Afonso","sequence":"additional","affiliation":[]}],"member":"3555","published-online":{"date-parts":[[2026,2,23]]},"reference":[{"key":"734159","doi-asserted-by":"crossref","unstructured":"Abeykoon, C. 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