Lighting strike mitigation for aircraft

摘要

A lightning mitigation system for use on an aircraft employs parasitic capacitance (26') associated with a motor/generator (18) to dissipate voltage provided as a result of a lightning strike. The motor/generator (18) includes a set of windings (22) defined by an outer periphery and a case (20) that surrounds the set of windings (22). A parasitic capacitance (26') is defined by the airgap (26) separating the windings (22) of the motor/generator from the case (20). A motor controller (14) is electrically connected to the set of windings (22) and includes a filter circuit (15). The filter circuit (15) includes an equivalent capacitance (15') that is selected based on the parasitic capacitance (26') associated with the motor/generator (18) such that a lightning strike results in a large portion of the voltage being dissipated by the parasitic capacitance (26') of the motor/generator (18).