| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 290046000 | STARTING AND GENERATING DYNAMO | 24 |
| 20090039652 | ELECTRICAL MACHINE - Embedding electrical machines in gas turbine engines has particular advantages by avoiding the need to provide mechanical connections. However, electrical machines such as switched reluctance electrical machines require relatively large electrical capacitors to accommodate and filter voltage variations in the phases of the electrical machine. Generally, the electrical machine will have a motoring period or generating period with a spacer period between. By injecting electrical current as electrical power in the spacer period, there is limited effect upon net torque within the electrical machine or electrical power generation. However, such stored electrical power in an inductive winding element of the electrical machine augments power pulses provided by a power source incorporating an electrical capacitor. In such circumstances, a smaller sized electrical capacitor can be used. | 02-12-2009 |
| 20090058087 | On-vehicle rotary electric machine operating on two modes of rectification - A rotary electric machine for a vehicle includes a rotor, a stator and a rectifying device for current AC/DC conversion. The machine operates as a motor and a generator. The machine comprises a multi-phase windings, switching elements forming a rectifying device, and a controller for controlling a current path of the multi-phase windings by switching the switching elements on and off to perform two modes of operation. The switching elements are switched such that one end of each windings is connected to either a high electrical potential end or a low electrical potential end of the rectifying device and the other ends of the windings connected together to be the same electrical potential are connected to either the high electrical potential end or the low electrical potential end in the rectifying device. | 03-05-2009 |
| 20090174188 | AIRCRAFT ENGINE STARTER/GENERATOR AND CONTROLLER - An aircraft starting and generating system includes a starter/generator that includes a main machine, an exciter, and a permanent magnet generator. The system also includes an inverter/converter/controller that is connected to the starter/generator and that generates AC power to drive the starter/generator in a start mode for starting a prime mover of the aircraft, and that converts AC power, obtained from the starter/generator after the prime mover have been started, to DC power in a generate mode of the starter/generator. The exciter includes a stator and a rotor, and wherein the exciter rotor includes a three-phase AC winding. | 07-09-2009 |
| 20090289456 | GAS TURBINE ENGINE APPARATUS - A gas turbine engine arrangement comprises a core engine, a power turbine and a propulsor. The core engine comprises at least one compressor and at least one turbine arranged to drive the at least one compressor and the core engine is arranged in a casing. The power turbine is positioned downstream of the at least one turbine and the power turbine is arranged to drive the propulsor. An electrical machine is arranged upstream of the at least one compressor. The electrical machine comprises a stator and a rotor and the electrical machine comprises a motor/generator. A first clutch selectively connects the rotor of the electrical machine to the power turbine and a second clutch selectively connects the rotor of the electrical machine to the at least one compressor of the core engine. | 11-26-2009 |
| 20090322088 | Torque transmission for an aircraft engine - The torque transmission system for an aircraft engine permits a starter-generator to drive the engine on starting at a speed reducing ratio. Once the engine is running, the engine then drives the starter-generator also at a speed reducing ratio. | 12-31-2009 |
| 20100127496 | GAS TURBINE ENGINE WITH INTEGRATED ELECTRIC STARTER/GENERATOR - An electrical machine is embedded into the compressor assembly of a gas turbine engine. An electrical system interface module distributes electrical current to and from the embedded electrical machine for starting the gas turbine engine and for operating accessory components. Accordingly, the gas turbine engine and accessory components can be started and operated without a power-takeoff shaftline and without an external accessory gearbox. | 05-27-2010 |
| 20100133832 | Aeroengine starter/generator arrangement - An open-rotor gas turbine engine comprising a starter/generator, a first spool and a second spool, the second spool is of a lower pressure than the first spool; wherein the starter/generator is connected to the first and second spools via first and second clutches respectively. The method of operating the open-rotor engine comprises the step of supplying power to the starter/generator to drive the first spool via the first clutch to start the engine and, once the engine is self-propelling, a step of driving the starter/generator from the second spool via the second clutch to generate electricity. | 06-03-2010 |
| 20100244446 | GAS TURBINE ENGINE ASSEMBLY INCLUDING DUAL SIDED/ DUAL SHAFT ELECTRICAL MACHINE - A gas turbine engine assembly includes an electromagnetic machine for extracting power from the turbine engine. The electromagnetic machine includes an outer rotor and an inner rotor rotatably supported adjacent to a stator disposed between the inner and outer rotors. The stator has an inner set of windings disposed on an inner surface adjacent to the inner rotor, and an outer set of windings on an outer surface of the stator adjacent to the outer rotor. The inner stator windings form a set of multiple-phase windings, and the outer stator windings form a set of multiple-phase windings. | 09-30-2010 |
| 20110049891 | TURBINE ENGINE INCLUDING A REVERSIBLE ELECTRIC MACHINE - A turbine engine, for example for a helicopter, the engine including a gas generator and a free turbine driven in rotation by a gas stream generated by the gas generator, the turbine engine further including a reversible electric machine for coupling to the gas generator, the reversible electric machine configured to set the gas generator into rotation during a stage of starting the turbine engine. To generate electricity, the reversible electric machine is also configured to be coupled to the free turbine after the turbine engine has started. | 03-03-2011 |
| 20110101693 | AIRCRAFT STARTER GENERATOR - A starter generator has an electric rotating machine having a rotating shaft and designed to carry two reverse operations—motor and generator. A first clutch is connected between the rotating machine and the first rotating shaft for transmitting rotations of the rotating machine to the first rotating shaft. A second clutch is connected between the rotating machine and the second rotating shaft for transmitting rotations of the second rotating shaft to the rotating machine. A continuously variable transmission is provided for changing the number of rotations transmitted from the second rotating shaft to the rotating machine. The rotating machine is supplied with electric power to rotate the rotating shaft, or the number of rotations of the rotating shaft is kept constant by controlling a transmission ratio of the continuously variable transmission. | 05-05-2011 |
| 20110115225 | STARTER-GENERATOR - A starter-generator is provided for a motor vehicle that has a drive train ( | 05-19-2011 |
| 20110121571 | TORQUE TRANSMITTING MECHANISM OF AN INTERNAL COMBUSTION ENGINE, A VEHICLE AND A METHOD OF TRANSMITTING TORQUE - A torque transmitting mechanism of an internal combustion engine includes, but is not limited to a starter-generator, a crankshaft side member that rotates in conjunction with a crankshaft, a first one-way clutch arranged to transmit torque from the starter to the crankshaft side member and a second one-way clutch arranged to transmit torque from the crankshaft side member to the generator. The starter is in at least substantially constant engagement with the crankshaft side member. | 05-26-2011 |
| 20120091716 | SYSTEMS AND METHODS FOR PROVIDING AC POWER FROM MULTIPLE TURBINE ENGINE SPOOLS - Systems and methods for providing AC power from multiple turbine engine spools are disclosed. An aircraft system in a particular embodiment includes an engine having a first shaft connected and a second shaft. The aircraft system can further include a bus system and a first energy converter including a starter/generator, coupled between the first shaft and the bus system to convert a first variable frequency energy transmitted by the first shaft to a first generally constant frequency energy. A second energy converter can be coupled between the second shaft and the bus system, with the second energy converter including a generator to convert a second variable frequency energy transmitted by the second shaft to a second generally constant frequency energy. | 04-19-2012 |
| 20120248773 | Power Equipment Apparatus Having Flywheel Assembly - A power equipment apparatus includes an engine, a starter switch, a battery, a flywheel assembly, a power regulator, and a controller. The engine includes a crankshaft. The starter switch is configured for selective actuation by an operator. The flywheel assembly comprises a rotor and a stator. The power regulator is coupled with each of the battery and the stator. The power regulator is configured to regulate power transfer between the battery and the stator in response to a control signal. The controller is coupled with each of the battery, the starter switch, and the power regulator. The controller is configured to generate the control signal. | 10-04-2012 |
| 20120286512 | ELECTRICITY PRODUCTION SYSTEM - Electricity production system comprising:
| 11-15-2012 |
| 20130119664 | ELECTRIC POWER SUPPLY CIRCUIT FOR A TURBOJET ENGINE NACELLE - The present invention relates to an electric power supply circuit ( | 05-16-2013 |
| 20130181452 | TURBOMACHINE DRIVE ARRANGEMENT - An arrangement and method for driving a turbomachine having a rotor is provided. The arrangement includes an input shaft rotationally coupled to the rotor. A motor generator device has a motor mode of operation and a generator mode of operation. A differential gear device having a first portion rotationally coupled to the input shaft and a second portion rotationally coupled to the motor generator device. A hydraulic assembly is rotationally coupled between the differential gear and the input shaft. The hydraulic assembly has a plurality of pistons and a pair of wobbler plates. A controller is operably coupled to the input shaft, the motor generator device and the hydraulic assembly, wherein the controller includes a processor that is responsive to executable instructions when executed on the processor for moving the pair of wobbler plates to a first position during a motor mode of operation. | 07-18-2013 |
| 20130193687 | Rotor Device Of Integrated Stater-Generator Motor And Rotor Working System - A rotor device of an integrated starter-generator motor and a rotor working system are disclosed in the present invention. The rotor device is a monobloc casted and then machined, inseparable one-piece structure. The rotor device takes the shape of a straw hat and is provided with an external side surface of a hat top being surface ( | 08-01-2013 |
| 20130207395 | AIRCRAFT ENGINE STARTER/GENERATOR - An assembly for a gas turbine engine includes a S/G having a rotatable shaft, a main machine, a PMG, and an exciter wherein at least one of the main machine, PMG, and exciter includes a rotor mounted to the shaft and having multiple rotor poles, a stator having multiple stator poles and at least one of the rotor poles and stator poles being formed by a core with a post and wire wound about the post to form a winding, with the winding having at least one end turn, and a layer to increase cooling capabilities of a portion of at least one of the stator and the rotor. | 08-15-2013 |
| 20140265331 | Alternator-Starter Assembly Having Gear Reduction System - An alternator-starter assembly for an internal combustion engine having a crankshaft and a drive member operatively connected to the crankshaft. The alternator-starter assembly includes an electric machine, a transmission assembly, and a controller. The electric machine includes a stator and a rotor that is configured for rotation relative to the stator. The transmission assembly includes a first drive shaft operatively connected to the rotor, a second drive shaft operatively connected to the drive member, and a gear assembly operatively connected to the first drive shaft and the second drive shaft. The controller is connected to the electric machine and is configured to operate the electric machine as a generator when the gear assembly is in a first gear configuration and to operate the electric machine as a motor when the gear assembly is in a second gear configuration. | 09-18-2014 |
| 20150054283 | AIRCRAFT ENGINE CONSTANT FREQUENCY STARTER/GENERATOR - A constant frequency starter/generator for a turbine engine includes a first inverter/converter, a second inverter/converter, a DC link electrically connecting the first inverter/converter to the second inverter/converter, and an electric machine having a synchronous main machine, wherein the constant frequency starter/generator is operable in a start mode and a run mode. | 02-26-2015 |
| 20160020655 | Shaft-Driven Electrical Device - A shaft-driven electrical device is disclosed. The shaft-driven electrical device may be for a piston-aircraft engine or a turbine aircraft engine. The shaft-driven electrical device for a piston-aircraft engine may include an engine, a plurality of coils, a flywheel, an output shaft and a spinner. The shaft-driven electrical device for a turbine aircraft engine may include an engine, a plurality of coils, a propeller spinner backplate, an output shaft and a spinner. The shaft-driven electrical device may serve as an electric generator, an electric motor, or a starter. | 01-21-2016 |
| 20160123174 | TURBOFAN ENGINE WITH GENERATOR - A turbofan engine includes a turbine engine having a rotatable fan and a generator. The generator further includes a main machine, an exciter, and a generator control unit for controlling the excitation of the main machine. A rotor assembly is located within one of the blades, and a stator assembly that is along a rotational path of the rotor assembly whereby the operation of the turbine engine rotates the fan, which rotates the rotor assembly along its rotational path past the stator assembly to generate electricity. | 05-05-2016 |
| 20160177770 | ELECTRICAL MACHINES | 06-23-2016 |
