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| Number | Title | Issue Date |
| 8076886 | Device and a method for providing electrical energy to an actuator, and an actuator system A method for providing electrical energy to an actuator is disclosed. In at least one embodiment, the method includes having a first voltage (UBUS) from a data bus; ii) converting the electric current to a current having a second voltage that is higher than the firs... | 12/13/2011 |
| 8058830 | Charging energy sources with a rectifier using double-ended inverter system Systems and methods are provided for charging energy sources with a rectifier using a double-ended inverter system. An apparatus is provided for an electric drive system for a vehicle. The electric drive system comprises an electric motor configured to provide tract... | 11/15/2011 |
| 7956563 | System for using a multi-phase motor with a double-ended inverter system Systems and apparatus are provided for an inverter system for use in a vehicle having a first energy source and a second energy source. The inverter system comprises an electric motor having a first set of windings and a second set of windings. The inverter system f... | 06/07/2011 |
| 7863845 | Electric power steering system apparatus In a power supply apparatus, a power supply circuit includes a primary power supply circuit including a high-voltage battery and a step-down circuit for stepping down the voltage of the high-voltage battery, and a secondary power supply circuit including a low-volta... | 01/04/2011 |
| 7800331 | Method and system for operating an electric motor coupled to multiple power supplies Methods and systems are provided for operating an electric motor having at least one winding coupled to first and second power supplies. A torque command for the electric motor is received. A present power reserve for the first and second power supplies is determine... | 09/21/2010 |
| 7612514 | Architecture and a multiple function power converter for aircraft A method and apparatuses are implemented for electric power systems. An apparatus for power conversion according to one embodiment comprises: a multiple function power converter (77), the multiple function power converter (77) being capable of performi... | 11/03/2009 |
| 7589484 | Closed loop acceleration control for a data storage device motor Method and apparatus for accelerating a multi-phase motor having a rotatable rotor are disclosed. A first commutation state in which the rotor resides is identified, after which a Proportional, Integral and Derivative (PID) control routine is executed for closed loo... | 09/15/2009 |
| 7402919 | Control device for motor-driven 4WD vehicle and related method A control device controlling a motor-driven four wheel drive vehicle, where either of front wheels and rear wheels are driven by an engine and the others are driven by an AC motor, is provided with an electric power generator driven by an engine to generate first th... | 07/22/2008 |
| 7342371 | System and method for detecting motor run condition A motor control system for detecting motor run condition comprises power switches for connection to an AC line for controlling application of AC power to the motor. An input receives a motor start command. A controller is connected to the input and controls operatio... | 03/11/2008 |
| 7259950 | Load-protection control circuit of power supply A load-protection control circuit of a power supply, which applies to the power supply that has a maximum power-limiting function. The power supply includes a power transformation circuit which outputs a direct current to drive loads and a control circuit which can ... | 08/21/2007 |
| 7148585 | Power grid backfeed protection apparatus A circuit breaker that functions like a double pole double throw (DPDT) switch is used to isolate the commercial power grid from an external power source. When in the “on” position the circuit breaker serves as a main power input circuit breaker allowing power f... | 12/12/2006 |
| 7134672 | Failsafe actuator A failsafe actuator is provided for returning an actuator driven element to a failsafe position in case of a failure condition. The actuator includes a drive assembly for driving a plunger from a first plunger position to a second plunger position. The actuator addi... | 11/14/2006 |
| 7132810 | Power supplying apparatus and power supplying method An apparatus for supplying a power to a motor for driving a mechanism that conveys a cartridge of a storage medium includes an accumulating unit that accumulates a regenerative power generated by the motor in a capacitor; and an adjusting unit that adjusts, when the... | 11/07/2006 |
| 7122991 | Power conversion and vehicle A power conversion system for converting a dc voltage to a pulsed ac voltage includes a dc voltage source providing three or more electric potentials, and a switching circuit arranged to connect one of the potentials selectively to an output terminal. A controller p... | 10/17/2006 |
| 7098618 | Rain detection system and method of controlling the same A rain detection system generates an operation signal for operating a wiper system on a window based on a detected window condition. The rain detection system includes a detection mechanism for intermittently detecting an amount of liquid on the window, a calculatio... | 08/29/2006 |
| 7095201 | Method and apparatus for providing a user selectable start-up current in a disk drive A method and apparatus for providing a user selectable start-up current in a disk drive are provided. A user may select a relatively high start-up current to provide a relatively fast start-up time in a disk drive. Alternatively, the user may select a relatively low... | 08/22/2006 |
| 7081727 | Regenerative charging for portable electronic devices In a portable electronic device having a data-storage drive that employs a rotatable data-storage carrier, as the data-storage carrier undergoes spin-up and spin-down cycles when the data-storage drive is being accessed, the electronic device recaptures at least a p... | 07/25/2006 |
| 7071643 | Dual speed quad brush two pole motor system A motor system includes four brushes electrically connected to a rotor. A stator includes two magnetic poles. A circuit selectively rotates the rotor at a first speed by applying a first voltage to a first of the brushes and a second voltage to a second of the brush... | 07/04/2006 |
| 7057361 | Inverter control device and electric vehicle thereof In a discharge control section of an inverter control device, when the connection of the battery and the smoothing capacitor is disconnected by means of a contactor, the charge accumulated on the smoothing capacitor is discharged by applying high-frequency voltage t... | 06/06/2006 |
| 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 |
| 6994357 | Failsafe actuator A failsafe actuator for returning an actuator driven element to a failsafe position in case of a failure condition is provided. The failsafe actuator may include mechanical or electrical means to provide a failsafe function. Such a failsafe actuator may be used in a... | 02/07/2006 |
| 6987368 | Motor controller A motor controller includes a position sensing device having a position sensor that senses a magnetic pole of a motor, a driver for driving the motor, and a wiring section that feeds a power supply voltage from the driver to the position sensing device. The position... | 01/17/2006 |
| 6984950 | System and method for configuring a motor controller with an external device A remotely configurable motor controller system comprises a motor controller and a remote configuration device. The motor controller includes solid state switches for connection between an AC line and motor terminals for controlling application of AC power to the mo... | 01/10/2006 |
| 6979979 | Gas turbine engine starter-generator exciter starting system and method including a capacitance circuit element A rotating electrical machine, such as an aircraft starter-generator, that includes an exciter that has its stator windings supplied with electrical power from a power supply. One or more switches are electrically coupled between the exciter stator winding and the p... | 12/27/2005 |
| 6949903 | Method and apparatus for digitizing a voltage When digitizing a voltage, a capacitor is charged, through an impedance, to a voltage value (Um) dependent on the voltage to be digitized. The limits of that one of a plurality of voltage ranges in which said voltage value (Um) lies, are ascertained, and the two lim... | 09/27/2005 |
| 6920718 | Independent backup power supply for a security barrier A system is disclosed for providing a backup power supply for a security gate system. In a preferred embodiment it includes a primary power supply, an AC motor and an auxiliary DC motor that share the same accessory devices including controller, movement mechanism, ... | 07/26/2005 |
| 6909263 | Gas turbine engine starter-generator exciter starting system and method including a capacitance circuit element A rotating electrical machine, such as an aircraft starter-generator, that includes an exciter that has its stator windings supplied with electrical power from a power supply. One or more switches are electrically coupled between the exciter stator winding and the p... | 06/21/2005 |
| 6870336 | Vehicle driving apparatus A drive unit for vehicles prevents the rise of temperature of a high-pressure battery or condenser and assists the vehicle engine using a motor activated by an electric current supplied from the battery. The drive unit includes a battery temperature sensor and batte... | 03/22/2005 |
| 6836085 | Method and apparatus of controlling electric vehicle A method controls an electric vehicle which is so constituted as to drive a synchronous motor by way of a switch and an inverter circuit. A battery acts as a source of driving a controlling power. The synchronous motor has a permanent magnet acting as an outer rotor... | 12/28/2004 |
| 6750622 | Motor controller system for battery-powered motors A motor controller system (15a) for dc power source motors (10) which includes a sensor device (16) that operates to measure and generate a voltage signal from the motor current and the rate of change of said current, and a programmable i... | 06/15/2004 |
| 6657405 | Automatically controlled dc power supply output circuit for shunting the power supply output in response to stored voltage of counter EMF generated by the load An automatically controlled DC power supply output circuit includes an isolation diode connected in series between the power supply and the load, a terminal voltage detection circuit connected in parallel between the power supply and the load on the load ... | 12/02/2003 |
| 6630804 | Driving apparatus, power output apparatus, and control method A direct-current power supply (40) is connected between the neutral points of two three-phase coils (24, 26) of a 2Y motor (22) constituted of the windings of the two three-phase coils (24, 26), which are connected in Y-connection and wound on a same stat... | 10/07/2003 |
| 6600282 | Circuit and method for preventing erroneous opening and closing in an automatically/manually foldable portable radio phone Disclosed is a circuit and method for preventing erroneous opening and closing caused particularly, by use of a DC motor in an automatically/manually foldable portable radio terminal having a main body and a sub-body rotatable with respect to the main bod... | 07/29/2003 |
| 5962997 | Electric motor-driven wheel brake for vehicles The wheel brakes of each vehicle axle or side or diagonal are supplied with current by a separate voltage source. To reduce the load on the vehicle's electrical system, the wheel brakes of a front axle are supplied with current first, and then the wheel b... | 10/05/1999 |
| 5953225 | Power flow control and power recovery with rotary transformers An interconnection system (100) for transferring power between a first grid (22) operating at a first electrical frequency and a second grid (24) operating at a second electrical frequency includes a rotary transformer (102) and a power recovery system (1... | 09/14/1999 |
| 5915070 | Motor driving apparatus for pulse-width modulation controlling a DC voltage according to a rotation speed setting information A motor driving apparatus PWM-controls a DC voltage from a rectifying unit according to a rotation speed setting information, and drives a motor by voltage pulse chooped by PWM. The rectifying unit is controlled so that a full-wave rectification is perfor... | 06/22/1999 |
| 5796225 | Electric vehicle power control system The present invention utilizes batteries in series addition and through controlled switching maintains current and voltage more constant as the batteries power a consuming device. The invention is described in its application to an electric motor powered ... | 08/18/1998 |
| 5744923 | Microprocessor-based controller for actuator motors with capacitive power backup and method therefor The microprocessor based controller for the fractional horsepower actuator motor includes a capacitive power backup system. The motor is used as an actuator and is coupled to an air damper or valve. In the event of a loss of power to the controller, the c... | 04/28/1998 |
| 5723956 | Low cost electronic ultracapacitor interface technique to provide load leveling of a battery for pulsed load or motor traction drive applications A battery load leveling arrangement for an electrically powered system in which battery loading is subject to intermittent high current loading utilizes a passive energy storage device and a diode connected in series with the storage device to conduct cur... | 03/03/1998 |
| 5714851 | Serial hybrid drive arrangement for a motor vehicle The invention provides a hybrid drive arrangement, particularly for a motor vehicle, having an internal combustion engine, a generator, a rectifier, an inverter, an energy accumulator connected to the direct current line between the rectifier and the inve... | 02/03/1998 |
