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| Number | Title | Issue Date |
| 8373368 | Energy storage device An energy storage device having a variable momentum of inertia uses centrifugal forces acting on movable masses to self adjust its moment of inertia. The adjustment of the moment of inertia occurs without any additional energy input. Energy is stored as rotational k... | 02/12/2013 |
| 8294392 | Arrangement for supplying power to a coupled system of machines An arrangement for supplying power to a system includes a first electric drive unit constructed to supply mechanical power to or receive mechanical power from a first coupled system of machines and a second electric drive unit constructed to supply mechanical power ... | 10/23/2012 |
| 7646157 | Driving tool and method for controlling same A method for controlling a driving tool having a power source, a driver, an actuator, a follower, and a control unit. The power source includes a motor and a flywheel that is driven by the motor. The actuator is configured to selectively move the follower to push th... | 01/12/2010 |
| 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 |
| 7365504 | Motor having multiple independent armature winding sets A motor is provided that includes multiple sets of independent stator windings that are not magnetically coupled, which allows the motor to be driven by multiple independent current drivers, and thereby increases the overall torque generated by the motor. In one emb... | 04/29/2008 |
| 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 |
| 7331207 | Metal shaping apparatus A power hammer assembly providing forming capabilities while remaining economical with respect to performance, vibration, footprint size and acquisition costs. The power hammer assembly can provide for a single stroke speed and/or a single set stroke with respect to... | 02/19/2008 |
| 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 |
| 7330011 | Motor driving apparatus A motor driving apparatus includes an inverter circuit for converting an output of a rectifier circuit connected to a single-phase AC power supply into a driving voltage, and outputting the driving voltage to a brushless motor, and an inverter control unit for contr... | 02/12/2008 |
| 7267028 | Stacked disc flywheel A high-speed steel flywheel for a flywheel uninterruptible power is constructed by stacking several unpierced steel discs together. Each disc is heat treated prior to assembly. Thin axial thickness of each disc enables complete rapid quenching to attain a fully hard... | 09/11/2007 |
| 7256513 | Locomotive auxiliary power system A locomotive auxiliary power system and control techniques for such a system are provided. In one exemplary embodiment the auxiliary power system includes an auxiliary alternator coupled to the internal combustion engine of the locomotive. The system further include... | 08/14/2007 |
| 7180200 | Starter system for portable internal combustion engine electric generators using a portable universal battery pack A generator starting system utilizes a portable universal battery pack to start an internal combustion engine of the generator. The system is adapted to utilize any one of a plurality of universal battery packs having outputs of varying voltage. The generator can in... | 02/20/2007 |
| 7176644 | Motor driving apparatus A motor driving apparatus includes an inverter circuit for converting an output voltage of a power supply into a three-phase AC and outputting the same to the brushless motor, a rotor position estimation unit for estimating a rotor position of the brushless motor, a... | 02/13/2007 |
| 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 |
| 7126299 | Enhanced system and method for controlling discharge of electric energy from machines Certain exemplary embodiments can comprise a method comprising: receiving electrical energy from a braking system of a vehicle at a working coil, the vehicle comprising a first wheel drive comprising a first electric motor; and via the working coil, transferring the... | 10/24/2006 |
| 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 |
| 7106016 | Inductive heating system and method for controlling discharge of electric energy from machines Certain exemplary embodiments can comprise a method comprising: receiving electrical energy from a braking system of a vehicle at a working coil, the vehicle comprising a first wheel drive comprising a first electric motor; and via the working coil, transferring the... | 09/12/2006 |
| 7091680 | Motor driving apparatus A motor driving apparatus includes an inverter circuit for converting an output voltage of a power supply into a three-phase AC and outputting the same to the brushless motor, a rotor position estimation unit for estimating a rotor position of the brushless motor, a... | 08/15/2006 |
| 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 |
| 7064506 | System and method for power seat motor control A method for controlling a vehicle power seat motor including the steps of generating at least one control signal using a controller, and adjusting the speed of the motor in response to the at least one control signal such that speed of the motor is maintained to a ... | 06/20/2006 |
| 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 |
| 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 |
| 7005812 | Commutation converter for a brushless servo motor An apparatus that allows a non-standard brushless motor to be driven with a standard drive amplifier. The motor rotation angle signal from a custom feedback device is converted to a standard format for driving a standard drive amplifier. Operator display and keypad ... | 02/28/2006 |
| 6995529 | Flywheel energy storage systems A flywheel energy storage system (10) includes a vacuum enclosure (18) having a flywheel (12), motor/generator (14), and a shaft (16) enclosed within. The flywheel and motor/generator combination are designed to minimize bearing lo... | 02/07/2006 |
| 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 |
| 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 |
| 6720674 | Device for prevention of power interruptions A device for preventing power interruptions to a DC bus includes a flywheel supported on bearings for rotation inside a chamber having a drag reducing atmosphere within a container. During charging, the flywheel is driven by an integral brushless permanent magnet ex... | 04/13/2004 |
| 6639370 | Speed control for a flywheel energy storage system Accordingly, the invention provides a speed control for a flywheel energy storage system that provides accurate and reliable speed control for long-term operation. The speed control uses a current limiting means that safely limits the acceleration current... | 10/28/2003 |
| 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 |
| 6445966 | Data interface module for motor control system An data interface module is provided for allowing a user to remotely modify a predetermined number of operating parameters of a motor driven by a motor control and for displaying the same. The interface module includes a micro-controller interconnected to... | 09/03/2002 |
| 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 |
| 6363214 | System for controlling the motion of an arm carrying a read/write head during load and unload operations A method for controlling an electromagnetic actuator having an arm connected thereto uses a circuit that temporarily places in a high impedance state output nodes connected to a winding of the electromagnetic actuator. A detected BEMF is compared with a l... | 03/26/2002 |
| 6307340 | Method for starting a power loom A main drive shaft of a power loom reaches the rated operating rpm of the loom by the time of the first beat-up of the reed, thus avoiding start-up faults in the fabric. A flywheel mass is accelerated to a start-up rpm that is higher than the rated operat... | 10/23/2001 |
| 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 |
| 6107770 | Control system for counter-oscillating masses A control system stabilizes the flexible body bending modes of a space, airborne, or ground-based system, while providing angular position control of an oscillating mass connected to a counter-oscillating counterbalance. The actuating mechanism uses two d... | 08/22/2000 |
| 6094020 | Disk drive utilizing Bemf of spindle motor to increase VCM voltage during seeks A disk drive is connectable to a power supply having a fixed DC voltage. The disk drive includes a voice coil motor (VCM) and a spindle motor having a plurality of windings and a rotor rotatable at a variable spin-rate. A spindle motor driver is coupled t... | 07/25/2000 |
| 6084325 | Brake device with a combination of power-generating and eddy-current magnetic resistance The present invention relates to a brake device with a combination of power-generating and eddy-current magnetic resistance having an outer ]-shaped fly wheel fastened on a central axle of a frame and fitted with a permanent magnet on the inner circular e... | 07/04/2000 |
| 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 |
| 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 |
