Engineering & Technologies 2 (2015 8) 166-175 ~ ~ ~ УДК 621.314.6 Impact Synchronous Electromagnetic Machines Forced Cooling Systems Constructions Estimation Vladimir Y. Neyman and Ludmila A. <...> Neyman* Novosibirsk State Technical University 20 Karl Marx Avenue, Novosibirsk, 630073, Russia Received 12.11.2014, received in revised form 20.01.2015, accepted 16.02.2015 Impact synchronous electromagnetic machines forced cooling systems constructions have been classifi ed and estimated. <...> The fi rst group of electromagnetic machines cooling systems include impact node external ventilation ones where heat is dissipated only from the magnetic core external cylinder surface. <...> The second group involves cooling systems with internal airfl ow paths having independent air inlet and outlet through holes in poles. <...> The third group includes cooling systems with coaxial channels in windings. <...> If multilayer winding separate sections have the same thickness, their balancing cooling is provided by airfl ow rate in particular ventilation channels in proportion to dissipated power. <...> The fourth group includes cooling systems with channels radial confi guration to increase windings total cooling surface area, reduce airfl ow resistance and provide more balanced heating of both windings. <...> External forced airfl ow cooling systems are specifi ed with heat fl ow range related to winding cooling surface area and specifi c winding active volume thermal load. <...> All rights reserved * Corresponding author E-mail address: neyman@ngs.ru # 166 # Vladimir Y. Neyman And Ludmila A. <...> Оценка конструктивного совершенства систем принудительного охлаждения синхронных электромагнитных машин ударного действия В.Ю. Нейман, Л.А. Нейман Новосибирский государственный технический университет Россия, 630073, Новосибирск, пр. <...> , 20 В проводимых исследованиях выполнена классификация и дана оценка конструктивного <...>