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| Number | Title | Issue Date |
| 8080951 | Drive apparatus and method for its operation A drive apparatus with at least one synchronous motor, a converter and a mechanical energy buffer able to be fed from an energy supply network, which, for converting mechanical energy into electrical current, includes a first asynchronous machine, and a method of op... | 12/20/2011 |
| 7923946 | Flywheel-based energy storage on a heave-compensating drawworks A system for managing energy consumption in a heave-compensating drawworks includes a power supply, a winch drum connected to the power supply so as to receive power from the power supply, a flywheel connected to the winch drum and to the power supply, and a control... | 04/12/2011 |
| 7633248 | Flywheel-based energy storage on a heave-compensating drawworks A system for managing energy consumption in a heave-compensating drawworks includes a power supply, a winch drum connected to the power supply so as to receive power from the power supply, a flywheel connected to the winch drum and to the power supply, and a control... | 12/15/2009 |
| 7602130 | Apparatus for self-generating a driving force to rotate a shaft without external power after initial activation An apparatus for self-generating a driving force employs an electromotive force generated on a coil by electromagnetic induction, in combination with a mechanical driving device to drive a rotating shaft of the device, such that the rotating shaft can rotate without... | 10/13/2009 |
| 7425807 | Transient energy systems and methods for use of the same This disclosure relates to transient energy systems for supplying power to a load substantially instantaneously on demand. Transient energy systems may include a flywheel coupled the rotor of an induction motor generator. One embodiment of the disclosure refers to s... | 09/16/2008 |
| 7378808 | Electric drive system having DC bus voltage control An electric drive system has a power source and a generator operatively connected to the power source. The generator is configured to produce a power output. The electric drive system also has at least one capacitor configured to store a supply of power. The electri... | 05/27/2008 |
| 7329960 | System and method for propelling a large land-based vehicle using a dual function brushless dynamoelectric machine A propulsion system for a relatively large land-based vehicle, such as a locomotive or off-highway vehicle, is provided. The system may include a brushless dynamoelectric machine made up of a main alternator having a main rotor and a main stator, and an auxiliary al... | 02/12/2008 |
| 7240583 | Dual function, highly damped, structurally and thermally compliant auxiliary bearing assembly An auxiliary bearing assembly for selectively engaging a shaft, preferably in an energy storage flywheel system, is configured to include a vibration damping seal, and an axial preload spring. The vibration damping seal damps out vibrations from the rotating group, ... | 07/10/2007 |
| 7174806 | Flexible bearing damping system, energy storage system using such a system, and a method related thereto A bearing damping system for damping vibrations and conducting heat from vibration-producing, heat-generating devices, an evacuated energy storage system including such a bearing damping system for damping vibrations produced by the rotating shaft and conducting hea... | 02/13/2007 |
| 7119451 | Self-powered miniature liquid treatment system with ultraviolet dosing A liquid treatment system that may be self-powered includes a filter, an ultraviolet light source and a hydro-generator. A flow of liquid may be filtered with the filter and used to rotate the hydro-generator to generate electric power. The ultraviolet light source ... | 10/10/2006 |
| 7119520 | Energy storage flywheel test control system A system and method for removing energy from the rotating group in an energy storage flywheel system during flywheel system testing includes one or more sensors is operable to sense operational parameters of the energy storage flywheel and to supply a sensor signals... | 10/10/2006 |
| 7108095 | System and method for generating power A system and method for generating power includes a motor assembly, an inertia-assisted, torque-enhanced gearbox, including a flywheel assembly and a clutch assembly, and a generator assembly. The motor assembly is used to drive the flywheel assembly up to the gener... | 09/19/2006 |
| 7105972 | Controller and magnetically driven wheel for use in a radial/rotary propulsion system The radial/rotary propulsion system of the present invention features a flywheel having concentric rings of permanent magnets attached to one or both sides or embedded into the flywheel. These permanent magnets interact with DC powered electromagnets which, when sel... | 09/12/2006 |
| 7098550 | Method for controlling a wind energy plant The present invention concerns a method of controlling a wind power installation and a wind power installation in particular for carrying out the method. Wind power installations have been generally known for a long time and in recent times are increasingly u... | 08/29/2006 |
| RE39205 | Power output apparatus and method of controlling the same While a ring gear shaft 126 linked with a drive shaft rotates, a power output apparatus 110 applies a torque to a first motor MG1 attached to a sun gear shaft 125, thereby abruptly increasing a revolving speed of an engine 150, to ... | 07/25/2006 |
| 7078880 | Energy storage flywheel voltage regulation and load sharing system and method A system for regulating the voltage in an electrical distribution system includes a plurality of flywheels, motor/generators, and controllers. Each of the motor/generators is coupled to one of the energy storage flywheels and to the electrical supply system. The mot... | 07/18/2006 |
| 7040434 | Engine speed control for a hybrid electric vehicle A hybrid vehicle comprises a drive wheel (5), an internal combustion engine (1), a power generating motor (2) that generates an electric power by using an output power of the engine (1), and a planetary gear set (13) that comprises... | 05/09/2006 |
| 6949902 | Controller of rotating electric machine for vehicle A controller of a rotating electric machine for a vehicle has a magnetic field electric current command arithmetic device for commanding a magnetic field electric current by the command of a torque and electric power command arithmetic device, an electric power conv... | 09/27/2005 |
| 6938713 | Dynamotor of hybrid vehicle, and method of control thereof The present invention is characterized by a hybrid car comprising a motor generator mechanically connected with the crank shaft of an internal combustion engine for driving a car wherein the internal combustion engine is started by electric power supplied by a batte... | 09/06/2005 |
| 6914342 | Engine control unit enablement system An engine control unit enablement circuit is disclosed that selectively closes a conductive path between a chargeable electrical energy source and electronics of an engine/motor. An engine position sensor provides feedback as to the rotational position of a rotating... | 07/05/2005 |
| 6771035 | Method and device for determining the rotor position of an electric motor with several motor strings The specification describes a method and a detection module for determining the rotor position of an electromotor having a plurality of motor phase windings, in which, for determining the rotor position, the polarity of at least one motor phase voltages, which is in... | 08/03/2004 |
| 6486627 | Flywheel uninterruptible power source A flywheel uninterruptible power source has a charging system that uses a high frequency pulse width modulated inverter inside the motor drive with a very low frequency, line commutated converter that regulates by switching the alternating current from th... | 11/26/2002 |
| 6369532 | Control system for an electric motor having an integral flywheel rotor A control system for an electric motor having an integral flywheel rotor. The motor includes a stator mounted co-axially with the engine crankshaft and a rotor surrounding the stator. A sensor is positioned near the rotor for sensing its rotational speed.... | 04/09/2002 |
| 6294886 | Supply system for an electric traction vehicle Supply system for an electric traction vehicle equipped with electric traction motors (M1 to M4) supplied by a traction system and pantograph means (2) for connecting the traction system (1) to a catenary (3), characterized in that it furthermore comprise... | 09/25/2001 |
| 6204572 | Power supply for providing instantaneous energy during electric utility outage A power supply system and method provides for smooth transitions between a utility power, transitory instantaneous power, and backup power in the event of a utility power failure of a utility supplying power to a load. As the utility power weakens due to ... | 03/20/2001 |
| 6097164 | On board power regeneration system for electrically operated vehicles An on-board electrical powered regeneration system for vehicles propelled by an electric traction motor and having an electrical storage cell bank composed of a rotatable flywheel operatively connected to an impeller, a fuel combustor arranged to emit a s... | 08/01/2000 |
| 6020657 | Power supply for providing instantaneous energy during utility power outages A power supply system and method provides for smooth transitions between a utility power, transitory instantaneous power, and backup power in the event of a utility power failure of a utility supplying power to a load. As the utility power weakens due to ... | 02/01/2000 |
| 5932935 | Energy storage flywheel emergency power source and methods A flywheel energy conversion device provides highly efficient conversion between kinetic and electrical energy. The flywheel produces increased output by providing armature coils in an air gap formed about the flywheel (both radial and axial embodiments a... | 08/03/1999 |
| 5925993 | Power control architecture for a hybrid power source A hybrid powertrain assembly includes a voltage bus which is operable using a predetermined voltage level within a predetermined voltage range, a generator operatively connected to the voltage bus for generating power and bilaterally transferring the powe... | 07/20/1999 |
| 5914575 | Power output apparatus and method of controlling the same While a ring gear shaft 126 linked with a drive shaft rotates, a power output apparatus 110 applies a torque to a first motor MG1 attached to a sun gear shaft 125, thereby abruptly increasing a revolving speed of an engine 150, to which a fuel injection i... | 06/22/1999 |
| 5839861 | Gear-cutting machine with emergency power supply A gear-cutting machine contains one driving motor (28) with a corresponding actuator (26a, 26c . . . ) for each of various adjusting axes (B, C, X, Z . . . ). The actuators are supplied from a common dc intermediate circuit (24) and controlled by a contro... | 11/24/1998 |
| 5821651 | Flywheel controller A flywheel controller for commutating a stator of a flywheel is disclosed wherein the flywheel controller includes a sensing unit to sense the position of a rotor and for creating a rotational signal, a control unit operatively connecting to the sensing u... | 10/13/1998 |
| 5767591 | Method and apparatus for providing startup power to a genset-backed uninterruptible power supply An uninterruptible power supply provides improved reliability by supplying temporary standby power to a critical load and startup power to a backup power source from a single energy storage system. In the preferred embodiment, a flywheel energy storage de... | 06/16/1998 |
| 5767637 | Controller for turboal ternator A speed controller for a generator having a rotor includes a speed control input port for receiving a speed command signal, a proportional gain stage electrically connected to said speed control input port for amplifying the speed command signal to create... | 06/16/1998 |
| 5757151 | DC pump drive module A hybrid vehicle utilizes a power unit to store and convert power between a turbine alternator, flywheel and traction motor. The power unit includes a water cooled heater exchanger for cooling power transistors used to switch stored and generated power be... | 05/26/1998 |
| 5646458 | Uninterruptible power system with a flywheel-driven source of standby power An UPS (uninterruptible power system) includes an UPS power conditioning unit that provides conditioned AC power to a critical load. The UPS power conditioning unit includes a variable speed drive that operates in response to AC utility power or to a stan... | 07/08/1997 |
| 5550444 | Device and process for the reversible storage of electric energy by its reversible conversion to kinetic energy In the device, an electric motor is designed as a brushless, electronically commutated pancake motor (201) with permanent magnets arranged on the rotor and coreless windings arranged on the stator. Each winding is provided with a pair of terminals which c... | 08/27/1996 |
| 5533583 | Non-trackbound vehicle with an electrodynamic converter and a throttle A passenger automobile or truck contains a unit which is formed by an internal combustion engine and a generator and which powers electric motors coupled with driving wheels of the vehicle via an energy distributor in the form of power electronics. An acc... | 07/09/1996 |
| 5345154 | Electric continuously variable transmission and controls for operation of a heat engine in a closed-loop power-control mode A heat engine operates an alternator that supplies electrical power to an electric continuously variable transmission for driving at least one ac motor through a differential to multiple wheels or to multiple independent ac wheel motors in an automobile, ... | 09/06/1994 |
| 5104062 | System for operating aircraft flight controls An aircraft flight control is operated by an electric motor by way of a flywheel and a stepless variable speed ratio device. A device, for example an over-running clutch, is provided so that movement of the flight control by external forces does not cause... | 04/14/1992 |
