Patent ID: 8023245
Filing Date: 2011-09-20
Classification: H02K,H02P

Abstract:
1. A lightning mitigation system for electrical systems on an aircraft, the lightning mitigation system comprising: a motor/generator having a rotor portion and a stator portion, wherein the stator includes at least one set of windings having an outer periphery; a motor/generator case located around the outer periphery of the at least one set of windings and separated by a distance d that defines an airgap between the motor/generator case and the at least one set of windings, wherein a parasitic capacitance associated with the motor/generator is defined, at least in part, by the distance d between the motor/generator case and the at least one set of windings; and a motor controller having at least one alternating current (ac) input/output electrically connected to the at least one set of windings and further including a filter circuit associated with the at least one ac input/output, wherein the filter circuit has a capacitance that is selected based on the parasitic capacitance associated with the motor/generator such that a lightning strike of the motor/generator results in a majority of the voltage being dissipated by the parasitic capacitance.