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| Number | Title | Issue Date |
| 7541783 | Flywheel electric generator Torque auxiliary units 30 are disposed at opposed positions outside rotary traces of the rotating permanent magnets 18 provided for the flywheel 11, in which permanent magnets 31 are arranged so as to be the same polarities as those of ro... | 06/02/2009 |
| 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 |
| 7400052 | 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... | 07/15/2008 |
| 7358620 | Methods and apparatus for ride-through operation of a complementary device to a transient power source In accordance with certain exemplary embodiments, the present technique provides methods and apparatus for providing operating power to a complementary device to an induction device based uninterruptible power source (UPS) via a direct current (dc) bus. In one embod... | 04/15/2008 |
| 7357128 | Closed loop defined profile current controller for electromagnetic rail gun applications A closed loop current controller for an electromagnetic rail gun. It is necessary to control the muzzle velocity of a rail gun accurately for the gun to be a good artillery device. The present invention provides a closed loop control system to accurately regulate th... | 04/15/2008 |
| 7353895 | Vehicle transmission with selectively-engageable electric motor A vehicle having a transmission for transmitting a torque from a drive machine to drive wheels, with the transmission having an transmission output shaft and a transmission input shaft, in which the torque can be transmitted from the drive machine to the transmissio... | 04/08/2008 |
| 7309938 | Rotary power converter A rotary power converter apparatus for coupling power between a prime driver and plural generators. The apparatus includes a frame having a first and second bearing aligned along an axis of rotation and a rotor assembly supported thereby. The rotor assembly includes... | 12/18/2007 |
| 7274124 | Electric generator The present invention discloses a generator (1) able to generate either unidirectional current or bi-directional current. A rotatable disc (7) has a conductive track (9) and a ferromagnetic bridge (8). Brushes (12, 13) switchingly ... | 09/25/2007 |
| 7235891 | Power system having generator driven by engine An apparatus for controlling the operation of power conditioners (10) for supplying the generated power to an external power system such as a commercial power system, in which power conditioners (10) are interconnected to an external power system, the ... | 06/26/2007 |
| 7230344 | Apparatus and method for transient and uninterruptible power In accordance with certain exemplary embodiments, the present technique provides methods and apparatus for providing transient and uninterrupted power to protected loads. As one example, the present invention provides an induction device that operates as an inductio... | 06/12/2007 |
| 7226378 | Driving device for automatically exerting a variable torque on an output shaft that rotates at a constant speed A driving device includes a power supply unit and a torque converter. The power supply unit outputs a constant power. The torque converter has a gear train that is connected to the power supply unit and interconnects a flywheel and an input shaft in order to respect... | 06/05/2007 |
| 7218025 | Rotational magnetic electrical generating device A rotational magnetic electrical generating device produces an alternating electrical current generated by a central rotational magnetic cylinder with an inner cavity having an central fixed coil operated by a DC current providing a driving rotational force upon a p... | 05/15/2007 |
| 7187087 | Flywheel system with synchronous reluctance and permanent magnet generators A flywheel system incorporates a variable speed synchronous reluctance motor-generator and a variable speed permanent magnet generator for providing backup power. Rotating elements are supported by electromagnetic bearings and electric power provided by the backup g... | 03/06/2007 |
| 7180210 | Standby generator integration system A standby generator integration system for efficiently integrating one or more standby generators into an operational power grid. The standby generator integration system includes a control center in communication with a plurality of control units. Each of the contr... | 02/20/2007 |
| 7170261 | Generator with dual cycloconverter for 120/240 VAC operation A generator system has two modes of operation, such as 120 VAC and 240/120 VAC. The generator system has a permanent magnet generator with two independent sets of windings that each generate a three phase AC voltage. One three phase AC voltage is coupled to a first ... | 01/30/2007 |
| 7129593 | Low-energy storage fast-start uninterruptible power supply method An uninterruptible power supply system has standby and backup modes and can change to backup mode upon detection of a grid fault. In both modes an alternator rotates at synchronous speed so that backup mode capability is ready. An energy storage unit through a DC-AC... | 10/31/2006 |
| 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 |
| 7116082 | Synchronization controller for multiple pulsed alternator applications A control concept for large pulsed power applications that use multiple pulsed alternators to generate high-energy current pulses. Pulsed alternators produce a large reaction torque during discharge, but paired pulsed alternators are characterized by equal and oppos... | 10/03/2006 |
| 7109622 | Flywheel system with synchronous reluctance and permanent magnet generators The present invention provides a flywheel system with a variable speed synchronous reluctance motor-generator and a variable speed permanent magnet generator for providing backup power. The flywheel system incorporates rotating elements supported by electromagnetic ... | 09/19/2006 |
| 7088011 | Motor-generator system with a current control feedback loop A motor-generator system with a current control feedback loop for generating electrical energy in stationary, portable, and automotive applications. The generator includes a housing defining an interior space and including a first portion and a second portion; an el... | 08/08/2006 |
| 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 |
| 7078876 | Feedforward controller for synchronous reluctance machines The present invention provides an electromechanical energy exchange system with a variable speed synchronous reluctance motor-generator having an all-metal rotor. A bi-directional AC-to-DC electric power converter interconnects the motor-generator with a DC bus. Fir... | 07/18/2006 |
| 7068014 | Online alternator flywheel system A flywheel energy storage system for preventing power interruptions to a load from interruptions of primary power includes a flywheel supported for rotation about an axis on a bearing system, and a motor-generator having a rotor coupled with the flywheel, and having... | 06/27/2006 |
| 7053589 | Long-life vacuum system for energy storage flywheels The invention, intended primarily for use in a steel flywheel power source (30), provides a vacuum system and a method of maintaining a vacuum inside a flywheel chamber (32) for the life of the power source (30). The vacuum system combines the u... | 05/30/2006 |
| 7044022 | Variable inertia flywheel apparatus In a flywheel having variable inertia, first and second guide grooves are respectively formed at a body and a rotatable member such that an overlapping position thereof is varied according to a relative rotation thereof. A movable mass is disposed at the overlapping... | 05/16/2006 |
| 7042110 | Variable speed distributed drive train wind turbine system A variable speed wind turbine employing a rotor connected to a multiplicity of synchronous generators with wound field or permanent magnet rotors. A passive rectifier and an inverter are used for power transfer back to the grid. A Turbine Control Unit (TCU) commands... | 05/09/2006 |
| 7042108 | Backup power system A backup power system is connected in parallel to a load which is powered via a power line connecting that load to a main power source, such as a utility. The backup system includes a generator/condenser unit that is coupled to a flywheel unit to maintain the flywhe... | 05/09/2006 |
| 7028461 | Uniaxial gas turbine system A uniaxial gas turbine system, comprising a uniaxial gas turbine, a rotary machine driven by the uniaxial gas turbine, a continuously variable transmission for transmitting a driving force from the uniaxial gas turbine to the rotary machine, and a control device for... | 04/18/2006 |
| 7030593 | Multiple path variable speed constant frequency device having automatic power path selection capability The present invention relates to variable speed constant frequency (VSCF) devices and methods for maximizing engine generator efficiency. In one embodiment, a VSCF device may include at least two paths for conducting power to the load. One path, a line inductor path... | 04/18/2006 |
| 7019989 | Uninterruptible power supply system An uninterruptible power supply system prevents an output voltage from dropping due to an operation delay of a relay for isolating an alternating-current power source side and avoids an unexpected current flowing between the alternating-current power source side and... | 03/28/2006 |
| 7017447 | Driving device for automatically exerting a variable torque on an output shaft that rotates at a constant speed A driving device includes a power supply unit and a torque converter. The power supply unit outputs a constant power. The torque converter has a gear train that is connected to the power supply unit and interconnects a flywheel and an input shaft in order to respect... | 03/28/2006 |
| 6949842 | Centrifugal weight control for a wind or water turbine The centrifugal weight control is a means of regulating rpm's on the low speed shaft in a changing wind (or water) speed. As wind speed increases the weights are extended farther from their hub. This extension as wind speed increases does bring into play a greater i... | 09/27/2005 |
| 6946748 | Inertia wheel coupled with a leverage transmission An apparatus is provided which includes an inertia wheel rigidly attached to a center axle, such that the wheel and axle adapted to unitarily rotate about a center axis. An axle support is adapted to rotatably support the center axle such that the inertia wheel and ... | 09/20/2005 |
| 6935987 | Control methodology for inertial energy storage devices A wheeled vehicle incorporating a control methodology for regulating the power input and output of an inertial energy storage device, specifically a flywheel. The control methodology utilizes a continuously variable transmission (CVT) and comprises control of the CV... | 08/30/2005 |
| 6906446 | Halbach array generator/motor having mechanically regulated output voltage and mechanical power output A motor/generator has its stationary portion, i.e., the stator, positioned concentrically within its rotatable element, i.e., the rotor, along the axis of rotation of the rotor. The rotor includes a Halbach array of magnets. The voltage and power outputs are regulat... | 06/14/2005 |
| 6870277 | Energy system for electric vehicle An energy providing system for an electric vehicle is described. The system includes a rotor mounted on a generator. A rechargeable or replaceable battery provides electric energy to a starter motor which initiates rotation of the rotor. The rotor is coupled to a ge... | 03/22/2005 |
| 6788029 | Flywheel with switched coupling regulator A flywheel energy storage device, for producing electrical power in an allowable range of operating voltages for an output load, includes an energy storage flywheel supported for rotation on a bearing system, and a brushless motor and a brushless permanent magnet ge... | 09/07/2004 |
| 6784562 | Heat engine electricity generating system having low-pressure enclosure for flywheel, clutch and electric generator Autonomous system for generating electricity comprising energy storage through an inertial flywheel. This system includes an engine/generator assembly having a heat engine, a mechanical speed variator, a clutch, a flywheel and a generator. The assembly composed of t... | 08/31/2004 |
| 6753619 | Fly-wheel-based regenerative energy management system The present invention includes a novel regenerative energy management system having a flywheel assembly with an integrated motor-generator which is coupled to a drivetrain motor-generator. The coupling between the flywheel assembly and the drivetrain motor-generator... | 06/22/2004 |
| 6737775 | Power generating installation that compises a drive engine and a generator In a power generator unit composed of a drive motor and a generator, particularly a diesel engine and a synchronous generator with a stationary rotor winding (28) and permanent magnets (35) arranged in the rotor (29), for excitation of the gener... | 05/18/2004 |
