# US 11,299,051 B2 · Electric charging system and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,299,051 B2 - Document ID: US11299051B2 - Status: Granted - Kind: B2 - Application number: 16/608,045 - Filed: 2018-04-23 - Published: 2020-06-18 - Granted: 2022-04-12 - Earliest claimed: 2017-05-05 - Assignees: Siemens Energy, Inc. - Applicants: Siemens Energy AS - Inventors: Espen Haugan; Haakon Torgersen - Web page: https://patentgrep.com/patent/US11299051B2 ## CPC - B60L 53/122: Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil - 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 - B60L 50/40: using propulsion power supplied by capacitors - B60L 50/60: using power supplied by batteries (in combination with fuel cells B60L50/75) - B60L 53/14: Conductive energy transfer - B60L 53/22: Constructional details or arrangements of charging converters specially adapted for charging electric vehicles - B60L 53/50: Charging stations characterised by energy-storage or power-generation means - B60L 53/52: Wind-driven generators - B60L 53/53: Batteries - B60L 53/55: Capacitors - B60L 53/56: Mechanical storage means, e.g. fly wheels - B60L 53/63: in response to network capacity - H02J 3/1842: having reactive elements actively controlled by bridge converters, e.g. active filters or static compensators [STATCOM] - H02J 50/10: using inductive coupling - H02M 5/458: using semiconductor devices only - H02M 5/4585: {having a rectifier with controlled elements} - H02M 7/06: using discharge tubes without control electrode or semiconductor devices without control electrode - B60L 2200/10: Air crafts - B60L 2200/32: Waterborne vessels - B60L 2210/30: AC to DC converters - B63H 21/17: by electric motor - H02J 7/04: Regulation of charging current or voltage - H02J 7/90: Regulation of charging or discharging current or voltage - H02J 2105/31: {for ships or vessels} - H02J 2105/32: {for aircrafts} - H02J 2105/37: exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] - H02J 2207/50: Charging of capacitors, supercapacitors, ultra-capacitors or double layer capacitors - Y02E 60/00: Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors - Y02T 10/72: Electric energy management in electromobility - Y02T 90/12: Electric charging stations - Y02T 90/14: Plug-in electric vehicles - Y04S 10/126: the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G] - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - B63H: MARINE PROPULSION OR STEERING (propulsion of air-cushion vehicles B60V1/14; specially adapted for submarines, other than nuclear propulsion, B63G; specially adapted for torpedoes F42B19/00) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION - Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS ## Abstract An electric charging system for a vessel, vehicle, or aircraft includes one or more energy storage modules on the vessel, vehicle, or aircraft; a pulse rectifier; a converter; and a voltage control transformer. The one or more energy storage modules are connected to outputs of the pulse rectifier. The voltage control transformer is connected to inputs of the pulse rectifier. The voltage control transformer includes a serial transformer having a plurality of pairs of transformer windings, connected together in series, one winding of each pair being adapted to be connected between the pulse rectifier and an input from an energy source and the other winding is connected to the converter. ## Claims ### Claim 1 An electric charging system for a vessel, vehicle, or aircraft, the system comprising: one or more energy storage modules on the vessel, vehicle, or aircraft; a pulse rectifier; a converter; and a voltage control transformer; wherein the one or more energy storage modules are connected to outputs of the pulse rectifier; wherein the voltage control transformer is connected to inputs of the pulse rectifier; wherein the voltage control transformer comprises a serial transformer having a plurality of pairs of transformer windings, connected together in series, one winding of each pair being adapted to be connected between the pulse rectifier and an input from an energy source; and wherein the other winding is connected to the converter. ### Claim 2 (depends on 1) The system according to claim 1, wherein the converter comprises a controlled AC to DC converter. ### Claim 3 (depends on 2) The system according to claim 2, wherein the converter further comprises a chopper between the output of the AC to DC converter and a DC bus. ### Claim 4 (depends on 1) The system according to claim 1, wherein the energy storage modules comprise one of a battery or capacitor bank. ### Claim 5 (depends on 1) A vessel, vehicle, or aircraft, comprising: a system according to claim 1; and at least one consumer on board the vessel, vehicle, or aircraft, connected to the energy storage modules. ### Claim 6 An electric charging system for a vessel, vehicle, or aircraft, the system comprising: one or more energy storage modules on the vessel, vehicle, or aircraft; a transformer comprising primary and secondary inductances and a pulse rectifier; wherein the one or more energy storage modules are connected to the secondary inductances; a voltage control transformer connected to the primary inductances; and a converter; wherein the voltage control transformer comprises a serial transformer having a plurality of pairs of transformer windings, connected together in series, one winding of each pair being adapted to be connected between one of the primary inductances and an input from an energy source; the other winding being connected to the converter. ### Claim 7 (depends on 6) The system according to claim 6, wherein the input from the energy source comprises phases of a multiphase power supply. ### Claim 8 (depends on 7) The system according to claim 7, wherein the voltage control transformer comprises the same number of pairs of transformer windings as there are phases of the multiphase power supply. ### Claim 9 (depends on 6) The system according to claim 6, wherein the input from the energy source comprises connections to a three phase AC supply. ### Claim 10 (depends on 6) The system according to claim 6, wherein the converter comprises a DC to AC converter. ### Claim 11 (depends on 10) The system according to claim 10, wherein the converter further comprises an AC to DC converter, or a diode rectifier in series with the DC to AC converter. ### Claim 12 (depends on 11) The system according to claim 11, wherein the system further comprises taps from the input from the energy source to the AC to DC converter. ### Claim 13 (depends on 12) The system according to claim 12, wherein a transformer is connected between the AC to DC converter and the taps to the input from the energy source. ### Claim 14 (depends on 6) The system according to claim 6, wherein the system further comprises a current detector to detect current flowing to or from the energy storage modules on the vessel, vehicle or aircraft. ### Claim 15 (depends on 6) The system according to claim 6, wherein the system further comprises at least one of current or voltage detectors to provide an indication of current or voltage at the connection to the energy source. ### Claim 16 (depends on 7) The system according to claim 7, further comprising: a remote charging station; wherein the multiphase power supply comprises a vessel power supply and the remote charging station comprises a shore based charging station. ### Claim 17 (depends on 6) The system according to claim 6, wherein one or more energy storage modules are connected to the converter. ### Claim 18 (depends on 16) The system according to claim 16, wherein the remote charging station further comprises a connector removeably connectable to a vessel, vehicle, or aircraft for electrically connecting energy storage modules of the remote charging station to energy storage modules onboard the vessel, vehicle or aircraft to charge the energy storage modules on the vessel, vehicle, or aircraft. ### Claim 19 (depends on 6) The system according to claim 6, wherein an onboard grid controller comprising an onboard grid converter and a pre-magnetising transformer on the vessel, vehicle or aircraft provides a voltage source to prevent inrush current on connecting the energy storage modules on the vessel, vehicle, or aircraft to the energy source. ### Claim 20 A method of charging an electric energy storage system, the method comprising: initiating a connection to an AC supply to charge an energy storage system of a vessel, vehicle or aircraft by closing a connection from the AC supply and regulating power from the AC supply to a rectifier transformer by means of a DC to AC converter and a voltage control transformer comprising a plurality of serially connected transformers.