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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 8183804 | AC motor driving circuit and electric car driving circuit In an AC motor driving circuit from an AC power supply and a DC power supply, a matrix converter and a power conversion circuit are provided. The matrix converter is connected between an output of the AC power supply and an input of the AC motor. In the power conver... | 05/22/2012 |
| 8179067 | Electric energy exchange system, in particular for a hybrid vehicle An electric energy exchange system between at least one motor-generator system and at least one storage member determining a continuous storage voltage between two branches of a bus circuit on which are connected in parallel a DC/DC converter, a filtering capacity, ... | 05/15/2012 |
| 8179084 | Variable-speed-drive system for a grid blower A drive system for a grid blower of a vehicle is provided. The system includes: an electrical bus, a grid of resistive elements connected to the electrical bus, the grid of resistive elements configured to thermally dissipate electrical power generated from braking ... | 05/15/2012 |
| 8169179 | Open-ended control circuit for electrical apparatus An AC machine control system for an AC machine (motor, generator, transformer, etc.) having open-ended windings, the control system comprising a drive circuit configured to transfer AC power between a first set of voltages and each end of the open-ended windings wit... | 05/01/2012 |
| 8148935 | Machine with flywheel-less buffer drive A machine has a basic body and a machine element. The machine element can be moved relative to the basic body by an electric working drive which is connected to an electric supply system via a working converter. An electric buffer drive is connected to the electric ... | 04/03/2012 |
| 8134331 | Motor drive system with flux regulated PM generator A method of generating and controlling power for an alternating current (AC) motor by means of at least one controlled permanent magnet machine (PMM) with a permanent magnet (PM) rotor and a stator with a magnetic flux diverter circuit for controlling the output of ... | 03/13/2012 |
| 8134329 | Buck converter with improved filter design A buck converter for use in controlling a motor in accordance with an embodiment of the present invention includes a power input operable for connection to a DC power supply, a switch for selectively connecting the motor to the power supply, a pulse width modulation... | 03/13/2012 |
| 8134330 | Electronic control of the pressure and flow of linear pumps and compressors A control circuit for linear motors driving pumps or compressors that provides a programmable pressure versus flow behavior. The duty cycle of a pulse width modulated drive signal to a coil in the motor is controlled by a parameter determined by the shape of the bac... | 03/13/2012 |
| 8084984 | System and method for monitoring and controlling stator winding temperature in a de-energized AC motor A system and method for measuring and controlling stator winding temperature in an AC motor while idling is disclosed. The system includes a circuit having an input connectable to an AC source and an output connectable to an input terminal of a multi-phase AC motor.... | 12/27/2011 |
| 8054031 | Converter device, rotating electrical machine control device, and drive device A converter device includes a converter circuit that includes a reactor connected to a primary side power supply, and a step-up feeding device that has a step-up switching element connected to the reactor and that boosts electric power of the primary side power supp... | 11/08/2011 |
| 8044631 | Power conversion systems and methods for controlling harmonic distortion Control systems, methods and power conversion systems are presented for controlling harmonic distortion, in which multi-sampling space vector modulation (SVM) is employed for controlling power converter switching devices, with a reference vector being sampled two or... | 10/25/2011 |
| 8040094 | Voltage clamping and energy recovery circuits A circuit for use with a stator winding of a rotating or linear electrical machine, the stator winding having a number of coils linked by the same number of points of common coupling, includes an electronic commutator circuit having the same number of switching stag... | 10/18/2011 |
| 8008885 | Power converters A power converter interfaces a variable voltage and variable frequency motor to a fixed voltage and fixed frequency network. A first inverter is connected to the motor stator. A dc link is connected between the first inverter and a second inverter. Each inverter inc... | 08/30/2011 |
| 7994750 | Systems and methods for controlling a converter for powering a load Embodiments of systems and methods for powering a load are provided. In one embodiment, a method may include providing a power converter comprising electrical circuitry comprising at least a first leg and a second leg, supplying an input power signal to the power co... | 08/09/2011 |
| 7990097 | Power conversion system and method for active damping of common mode resonance Power conversion systems and methods are presented for damping common mode resonance, in which inverter or rectifier switching control signals are selectively modified according to a damping resistance current value computed using a predetermined virtual damping res... | 08/02/2011 |
| 7965057 | Method for operation of a three-phase rotating electrical machine, and an apparatus for carrying out the method A method and apparatus are provided for operation of a three-phase rotating electrical machine which has at least two stator winding sets and each stator winding set has three phase windings connected in star, and the star circuits of the stator winding sets have a ... | 06/21/2011 |
| 7965056 | Control apparatus of power conversion system The invention provides a control apparatus of a power conversion system for driving an induction motor via a VVVF inverter, wherein the AC voltage generated by the inverter is increased so as to expand the high-speed side property of the induction motor, to thereby ... | 06/21/2011 |
| 7902790 | Induction motor drive unit, motor drive system, and elevating system A slip frequency is estimated from a current instruction or detected currents in an induction motor. Acceleration impossibility in an induction motor drive unit is determined, when the slip frequency exceeds the maximum torque generating slip frequency for the prede... | 03/08/2011 |
| 7859217 | System and method for operating a soft starter in conjunction with a single to three phase static converter A motor controller system comprises solid state switches for connection between a single phase to three phase static converter and motor terminals for controlling application of three phase power to the motor. Sensors sense power from the static converter. A control... | 12/28/2010 |
| 7855526 | Power conversion control device, power conversion control method, and power conversion control program In the present invention, when configuring a control system of an inverter performing power conversion between AC and DC, a frequency computation is performed based on biaxial voltage amounts obtained through two current regulators in such a way that each of biaxial... | 12/21/2010 |
| 7834578 | Load driving apparatus, vehicle, and abnormality processing method at load driving apparatus When an ECU determines that the motor count of a motor generator exceeds a predetermined limit value, control is effected to set the torque of motor generator to zero. Further, when the ECU determines that motor count exceeds the predetermined limit value, voltage c... | 11/16/2010 |
| 7825620 | Controller and constant measuring apparatus for AC motor A controller and a constant measuring apparatus have a means for supplying a synthesized current, resulting from superimposing an AC current to a DC current, from an inverter and for changing the DC current component of the synthesized current continuously or discon... | 11/02/2010 |
| 7804271 | Multiphase current supplying circuit, driving apparatus, compressor and air conditioner A multiphase current supplying circuit includes a converter, an intervening circuit, an inverter, a control circuit and a lightning arrester. A power supply system is connected to the converter with the lightning arrester interposed therebetween, and the ac voltage ... | 09/28/2010 |
| 7786694 | Converter system, method, and converter A converter system and method, including: at least one supply module, which provides a unipolar, intermediate circuit voltage; one or more drive modules, which may be powered from the intermediate circuit voltage and each include at least one inverter for powering a... | 08/31/2010 |
| 7710063 | Electric power converter An electric power converter, electric power conversion system and method that, without using a DC-DC converter, uses and allots the electric power of plural power sources while reducing the volume and losses. At least one phase of the motor is connected to plural po... | 05/04/2010 |
| 7609022 | Power supply system for vehicle with improved energy efficiency and vehicle including the same A matrix converter (38) converts three-phase AC power input from a first motor-generator (MG1) directly to three-phase AC power for driving a second motor-generator (MG2) and outputs the resultant three-phase AC power, without rectifying the thr... | 10/27/2009 |
| 7579795 | Brushless-motor driving control device, image reading apparatus, and image forming apparatus A drive control device for a brushless motor having a rotor and a plurality of coils with different phases can be included in an image reading apparatus or an image forming apparatus. The drive control device may include a detection target configured to rotate in sy... | 08/25/2009 |
| 7579805 | Semiconductor device A semiconductor device in which the lifetime of mounted components can be prolonged. A cooling system for controlling the temperature of a refrigerant through a heating section and a radiator is provided. The semiconductor device is connected to the cooling system a... | 08/25/2009 |
| 7541769 | Electric power converter and motor driving system An electric power converter which has improved accuracy in compensation of a dead time. A motor driving system employing the electric power converter is also provided. A power module includes a plurality of switching devices connected in series and converts DC power... | 06/02/2009 |
| 7508159 | Method for controlling a cycle-skipping control system including computer readable code and controller for performing such method A method, computer-readable code, and controller are provided for controlling a cycle-skipping control system having two or more cycle skippers connected to a common multi-phase AC (alternating current) power source to drive a variable frequency load. A respective f... | 03/24/2009 |
| 7456602 | System and method of commonly controlling power converters A system and method for controlling power converters are disclosed. Briefly described, one embodiment is a method comprising communicating at least one first control signal to an alternating current/direct current (AC/DC) power converter from a multi-converter syste... | 11/25/2008 |
| 7443129 | Quenching device for a converter bridge with line regeneration There is described a method for controlling a quenching device for a converter bridge with line regeneration, whereby the converter bridge controlled by a network-timed control circuit by ignition pulses is connected with its three inputs to the phases of a three-ph... | 10/28/2008 |
| 7443127 | Apparatus and method for motor control using table In an apparatus of controlling a motor in a battery vehicle, a current command generation section has a table, and generates an exciting command current and a torque command current by referring to the table based on a torque command. A converting section generates ... | 10/28/2008 |
| 7436147 | Motor driving apparatus A motor driving apparatus drives a motor by means of an AC/AC direct converter such as a matrix converter. The motor driving apparatus is provided with a current detecting section for detecting motor currents, a comparing section for detecting whether motor current ... | 10/14/2008 |
| 7429836 | Motor driver circuit, control method thereof, and electronic apparatus A motor driver circuit includes a diving circuit for driving at least one motor, a plurality of DC/DC converters for respectively generating different voltages, a detection circuit to detect an output failure in the plurality of DC/DC converters, and a stopping circ... | 09/30/2008 |
| 7427849 | Controller for an electric vehicle and driving apparatus for the electric vehicle The present invention provides a controller and driving apparatus for an electric vehicle, which enables a motor to steadily output torque even when there is an increase in the rotation speed of an internal combustion engine that drives a generator. A motor control ... | 09/23/2008 |
| 7423401 | AC rotary machine constant measuring apparatus for measuring constants of stationary AC rotary machine In an apparatus measuring constants of an induction motor, an inverter converts an inputted voltage command signal into a single-phase AC power and feeds the single-phase AC power to the induction motor, and a currert detector detects a current of the single-phase A... | 09/09/2008 |
| 7423406 | Power control of an induction machine Regulation of the active and reactive power of an induction machine in a coordinate system fixed on the winding, wherein a first regulator output variable is generated using a first regulator as a function of a setpoint variable deviation of the active power and a s... | 09/09/2008 |
| 7420351 | Power-factor correction device for variable speed drive A variable speed drive for a three-phase electric motor, including a rectifier module supplying a rectified voltage from a single-phase alternating current network, a voltage step-up module supplying a regulated bus voltage, and an inverter module supplying a contro... | 09/02/2008 |
| 7405534 | Apparatus and method for controlling velocity of motor An apparatus controlling a velocity of a motor having a rotor, includes a sensing velocity calculator sensing a rotation velocity of the motor, and calculating a sensing velocity on the basis of the sensed rotation velocity of the motor; a velocity estimator estimat... | 07/29/2008 |
