High temperature nanocomposite insulation for high power density machines

Increasing demand for higher power, lighter weight and compact power generation systems in aircraft has resulted in the need for a new high temperature insulation system. It requires better thermal capability and improved reliability over the 240°C system used commercially. A 280°C insulation system has been developed based on a hybrid organic-inorganic material to address these evolving requirements. This electrical insulation system comprises a nanocomposite polyimide wire for windings, and a hybrid slot liner for ground wall insulation. Thermal, electrical and mechanical properties of this insulation system will be discussed.