An Output Supply System (OSS) may comprise an Electric Power Generating System (EPGS) comprising a first Permanent Magnet Synchronous Machine (PMSM), a first three-phase multifunction converter, a first three-position switch, a battery management system, wherein the PMSM, the first three-phase multifunction converter, the first three-position switch, and the battery management system are in electronic communication, and a first tangible, non-transitory memory configured to communicate with a first controller, the first tangible, non-transitory memory having instructions stored thereon that, in response to execution by the first controller, cause the first controller to perform operations.