# US 2026/0100394 A1 · Power source assembly for electric machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0100394 A1 - Document ID: US20260100394A1 - Status: Published application - Kind: A1 - Application number: 18/908,947 - Filed: 2024-10-08 - Published: 2026-04-09 - Earliest claimed: 2024-10-08 - Assignees: GE Marmara Technology Center Muhendislik Hizmetleri Ltd; General Electric Deutschland Holding GmbH - Applicants: GE Marmara Technology Center Muhendislik Hizmetleri Ltd; General Electric Deutschland Holding GmbH - Inventors: Ekrem Cengelci; Cosimo Spagnolo; Mohamed Osama - Web page: https://patentgrep.com/patent/US20260100394A1 ## CPC - H01M 8/249: comprising two or more groupings of fuel cells, e.g. modular assemblies - H02J 1/102: being switching converters (H02J1/108, H02J1/12 take precedence) - B64D 27/33: Hybrid electric aircraft - H01M 8/04873: {of the individual fuel cell} - H02J 1/10: Parallel operation of DC sources - H02J 4/25: for transfer of electric power between AC and DC networks, e.g. for supplying the DC section within a load from an AC mains system - H02J 7/34: Parallel operation in networks using both storage and other DC sources, e.g. providing buffering (H02J7/14 takes precedence) - B64D 2221/00: Electric power distribution systems onboard aircraft - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - H01M 2250/20: Fuel cells in motive systems, e.g. vehicle, ship, plane - H02J 2101/30: Fuel cells - H02J 2105/32: {for aircrafts} - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT ## Abstract A power source assembly includes a plurality of strings electrically connectable to a load. Each of the plurality of strings includes a fuel cell module and a DC/DC converter electrically connected to the fuel cell module. Each of the plurality of strings is arranged in parallel to each other of the plurality of strings. ## Claims ### Claim 1 A power source assembly comprising: a plurality of strings electrically connectable to a load, each of the plurality of strings comprising: a fuel cell module; and a direct current (DC)/DC converter electrically connected to the fuel cell module, wherein each of the plurality of strings is arranged in parallel to each other of the plurality of strings. ### Claim 2 (depends on 1) The power source assembly of claim 1, wherein each string comprises a plurality of fuel cell modules including the fuel cell module and a plurality of DC/DC converters including the DC/DC converter, each of the plurality of DC/DC converters electrically connected to one of the plurality of fuel cell modules. ### Claim 3 (depends on 2) The power source assembly of claim 2, wherein at least one of the plurality of strings includes a plurality of units connected in series, each of the plurality of units including one of the plurality of fuel cell modules and one of the plurality of DC/DC converters. ### Claim 4 (depends on 3) The power source assembly of claim 3, wherein each of the plurality of units further comprises a battery module. ### Claim 5 (depends on 1) The power source assembly of claim 1, wherein each of the plurality of strings further comprises a transformer electrically isolating the fuel cell module from the load. ### Claim 6 (depends on 1) The power source assembly of claim 1, further comprising a battery module electrically connected to the load. ### Claim 7 (depends on 6) The power source assembly of claim 6, wherein the battery module is arranged in parallel to the plurality of strings. ### Claim 8 (depends on 6) The power source assembly of claim 6, wherein the battery module is arranged in parallel to the fuel cell module. ### Claim 9 (depends on 6) The power source assembly of claim 6, wherein the battery module includes a second DC/DC converter. ### Claim 10 (depends on 6) The power source assembly of claim 6, wherein each string further comprises a transformer electrically isolating the fuel cell module from the load. ### Claim 11 (depends on 1) The power source assembly of claim 1, further comprising a switch between one of the plurality of strings and the load. ### Claim 12 (depends on 1) The power source assembly of claim 1, wherein each fuel cell module is configured to increase or to decrease a terminal voltage over a specified period of time upon a change in demand of a load. ### Claim 13 A system comprising: an electric motor including a plurality of windings; and a power source assembly comprising: a plurality of strings electrically connected to a load, each of the plurality of strings comprising: a fuel cell module; and a DC/DC converter electrically connected to the fuel cell module, wherein each of the plurality of strings is arranged in parallel to each other of the plurality of strings, wherein each of the plurality of strings is electrically connected to one of the plurality of windings. ### Claim 14 (depends on 13) The system of claim 13, wherein each string comprises a plurality of fuel cell modules including the fuel cell module and a plurality of DC/DC converters including the DC/DC converter, each of the plurality of DC/DC converters electrically connected to one of the plurality of fuel cell modules. ### Claim 15 (depends on 14) The system of claim 14, wherein at least one of the plurality of strings includes a plurality of units connected in series, each of the plurality of units including one of the plurality of fuel cell modules and one of the plurality of DC/DC converters. ### Claim 16 (depends on 13) The system of claim 13, wherein each of the plurality of strings further comprises a transformer electrically isolating the fuel cell module from the load. ### Claim 17 (depends on 13) The system of claim 13, further comprising a battery module electrically connected to the load. ### Claim 18 (depends on 17) The system of claim 17, wherein the battery module is arranged in parallel to the plurality of strings. ### Claim 19 (depends on 17) The system of claim 17, wherein the battery module is arranged in parallel to the fuel cell module. ### Claim 20 (depends on 17) The system of claim 17, wherein the battery module includes a second DC/DC converter.