METHOD FOR ENCAPSULATING ELECTRIC MOTORS WINDINGS Russian patent published in 2016 - IPC H02K15/08 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, particularly to technology of encapsulating electric machines windings. Method for encapsulating motors windings is based on current winding heating to temperature of 110-120 °C and filling the space between external surface of winding front parts and an electric motor body with encapsulate mass. It differs from known designs in that said encapsulate mass contains the following components, wt%: nanotubes of boron nitride - 25÷30; fine powder of ferromagnetic material with secific volume resistance of not less than 10 Ohm×m - 10÷15; impregnating compound - the rest. Heat conductivity of encapsulate mass in the disclosed method is 5.9 times higher, than heat conductivity of encapsulate mass in the prototype.

EFFECT: motors windings encapsulating performed by described method allows, as shown by preliminary experiments, reducing average temperature of winding overheating by more than 2 times as compared to the prototype, that enables considerable improvement of windings quality.

1 cl, 1 dwg, 1 tbl