AeroVironment, Inc. is a leader in Unmanned Aircraft Systems, Electric Vehicle Charging Systems, and Power Cycling & Test Systems.40 Years of Human Power™

Direct Lamination Cooling for Transformers, Inductors, & Motors




AeroVironment developed innovative cooling technologies to increase motor efficiency and decrease motor mass, volume, and cost. A major limiting factor in the design and performance of electric motors and other devices, such as inductors and transformers, is the ability to transfer heat from the device. The steel lamination incorporated into motors generate heat caused by magnetic losses and by conduction from the copper current-carrying windings embedded in the magnetic device. Conventional technology requires that these magnetic elements transfer their heat through conduction to a heat sink or a special coldplate, resulting in added material and cost. AV developed an alternative cooling approach where cooling fluid passes directly through the lamination assembly, thereby eliminating the heat sink or coldplate.


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