Oil circulation system for hybrid electric engine

A method for controlling an oil pressure in a bearing compartment of a lubrication circuit of a gas turbine engine, comprising:

• providing power assist to a high speed spool and/or a low speed spool of the gas turbine engine via an electric motor operably coupled to the high speed spool and/or the low speed spool;
• maintaining a pressure in the bearing compartment or a scavenger line of the lubrication circuit of the gas turbine engine at a desired pressure, the gas turbine engine comprising the bearing compartment, a supply pump, and a scavenger pump operably coupled to the lubrication circuit and a supplemental motor operably coupled to the supply pump or the scavenger pump;
• and
• controlling the supplemental motor based upon a pressure differential between an interior of the bearing compartment and an exterior of the bearing compartment via a controller.