258 85 http://www.patentstorm.us/ http://www.patentstorm.us/images/logo.gif http://www.patentstorm.us/rss/class/applications/rss-318.xml Recent patent applications filings in USPTO Class 318 Electricity: motive power systems. Thu, 18 Mar 2010 15:00:44 patents@patentstorm.us en http://www.patentstorm.us/applications/20100066400/description.html

Application Number:  20100066400

Publication Date:  2010-03-18

Inventors:  Hendrickson, Matthew; Bailey, Bradley; Beach, Frederick

A controller (500) in an electric drive system is used to determine the operating condition of array of rotating diodes (302B) within a generator (204). During operation, the controller (500) receives a set of generator inputs, a set of machine parameters, and a set of diagnostic values. Next, the controller (500) determines a set of expected operating values corresponding to the set of diagnostic values. The controller (500) then compares the obtained ...
]]> 20100066400 http://www.patentstorm.us/applications/20100066347/description.html

Application Number:  20100066347

Publication Date:  2010-03-18

Inventors:  Nakamura, Takehide; Inoue, Tomoaki

A resolver the resolver comprising an excitation coil for receiving an excitation signal formed by amplitude modulation of a high-frequency signal and a detection coil for outputting a detection signal. The resolver is arranged to detect a change in position of a rotor provided with the excitation coil or the detection coil based on the detection signal varying with the change in position of the rotor. The high-frequency signal is a digitized signal generated from a reference ...
]]> 20100066347 http://www.patentstorm.us/applications/20100066299/description.html

Application Number:  20100066299

Publication Date:  2010-03-18

Inventors:  Izumi, Mitsuru; Maki, Naoki

The present invention provides a superconductive rotating electric machine drive control system that has higher efficiency and is smaller size and lighter in weight than conventional systems, and also provides a superconductive rotating electric machine drive control method to be implemented in the superconductive rotating electric machine drive control system. By the superconductive rotating electric machine drive control system and the superconductive rotating electric machine drive control ...
]]> 20100066299 http://www.patentstorm.us/applications/20100066298/description.html

Application Number:  20100066298

Publication Date:  2010-03-18

Inventor:  COLEMAN, Ralph

In a positioning device in gantry type of construction, due to a special arrangement of the position-measuring devices used for the positioning, errors due to thermal expansion of the positioning device may be avoided to a great extent. In particular, attention is given to the advantageous placement of fixed point of a scale relative to a straightness track of a further ...
]]> 20100066298 http://www.patentstorm.us/applications/20100066297/description.html

Application Number:  20100066297

Publication Date:  2010-03-18

Inventor:  DECKER, JÜRGEN

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 supply system via a buffer converter. The working converter and the buffer converter are controlled by a control device in line with a predetermined travel movement of the machine element in a coordinated manner. The coordination is ...
]]> 20100066297 http://www.patentstorm.us/applications/20100066296/description.html

Application Number:  20100066296

Publication Date:  2010-03-18

Inventors:  Vaucher, Jean-Marc; Burri, Pierre-Alain

A method is provided for adapting controller parameters of a drive to different operating states. A control loop includes a PID controller whose I gain factor is adapted to a drive velocity and/or whose D gain factor is adapted to a drive current, and consequently to a drive load. The I gain factor is determined based on the drive velocity and the D gain factor is determined based on the drive current, in each case at least in one area, the I gain factor falling with the drive velocity and the ...
]]> 20100066296 http://www.patentstorm.us/applications/20100066295/description.html

Application Number:  20100066295

Publication Date:  2010-03-18

Inventors:  Katyal, Gourav; Surendra, Bysani

A trigger mechanism for starting current acquisition for motor control applications is disclosed. The present invention may generate an edge (ADC trigger) that can be used to start current acquisition by the ADC. The present invention may reduce the overhead involved in synchronizing the current acquisition with PWM generation and also minimize the wait period for software conversions to complete by replacing software-based timing with a hardware-based trigger ...
]]> 20100066295 http://www.patentstorm.us/applications/20100066294/description.html

Application Number:  20100066294

Publication Date:  2010-03-18

Inventors:  Gottemoller, Benjamin P.; Hendrickson, Matthew

A controller (500) in an electric drive system is used to determine whether a phase current imbalance in the output winding of a power generator (204) exists. During operation, the controller (500) receives a set of power generator diagnostic values corresponding to the phase currents output by the power generator (204). Next, the controller (500) determines a set of expected operating phase current values. The controller (500) then compares the ...
]]> 20100066294 http://www.patentstorm.us/applications/20100066293/description.html

Application Number:  20100066293

Publication Date:  2010-03-18

Inventors:  Takamatsu, Yuuichi; Iriguchi, Yasuhiko

The vehicle-use start control system includes a control section which initializes a control signal outputted from the control section when a power supply voltage supplied is lower than or equal to a predetermined initialization voltage, and sets a voltage level of the control signal depending on the detected shift range of the automatic transmission, and a latch section which outputs a start permission/inhibition signal a voltage level of which is indicative of starting of an engine of the ...
]]> 20100066293 http://www.patentstorm.us/applications/20100066292/description.html

Application Number:  20100066292

Publication Date:  2010-03-18

Inventors:  Gottemoller, Benjamin P.; Miller, Benjamin; Lengyel, Tamran H.

A cooling system for a retarding system of an electric drive machine (100) includes a direct current (DC) link having first and second rails. A first resistor grid (214) is selectively placed in circuit between the rails by an automatic switch (216) in response to a switch (216) signal. A second resistor grid (218) is selectively placed in circuit between the rails by a chopper circuit (220) connected in series with the second resistor grid ...
]]> 20100066292 http://www.patentstorm.us/applications/20100066291/description.html

Application Number:  20100066291

Publication Date:  2010-03-18

Inventors:  Chang, Paul; Chen, Tsair-Rong; Row, Jeen-Sheen; Lu, Chin-Sheng

In a method and module for controlling rotation of a motorized spindle driven by a driving unit, a sensing unit is adapted for sensing vibration of the spindle and generates a voltage signal corresponding to the vibration of the spindle. A processing unit is coupled to the sensing unit for receiving the voltage signal therefrom, and outputs a control signal corresponding to the voltage signal upon detecting that the voltage signal is greater than a reference voltage corresponding to a ...
]]> 20100066291 http://www.patentstorm.us/applications/20100066290/description.html

Application Number:  20100066290

Publication Date:  2010-03-18

Inventor:  TING, CHIN-HSIEN

A voltage protecting apparatus is used for detecting voltage of a motor driver, and adjusting the voltage of the motor driver when at an over-voltage state. The motor driver includes a direct current (DC) power source and a power board. The voltage protecting apparatus includes a switch unit, a voltage transform unit, a controller, a voltage detector, and an over-voltage judger. When the controller outputs a high level signal, the switch unit is turned on, the voltage transform unit transforms ...
]]> 20100066290 http://www.patentstorm.us/applications/20100066289/description.html

Application Number:  20100066289

Publication Date:  2010-03-18

Inventors:  Degner, Michael W.; Kim, Hongrae; Reynolds, William

A method for controlling an electric motor includes receiving a first control command that is indicative of a desired motor control. A current operating condition for the motor is determined. It is then determined whether the first control command meets at least one predetermined criterion at the current operating condition. A second control command that is different from the first control command is generated when the first control command meets the at least one predetermined criterion. ...
]]> 20100066289 http://www.patentstorm.us/applications/20100066288/description.html

Application Number:  20100066288

Publication Date:  2010-03-18

Inventor:  Williams, Joshua

A method of voltage supply management for an electric drive system includes receiving a voltage signal (1002) indicative of a voltage in a supply link, and one or more condition signals that are indicative of an operating condition of the electric drive system. A difference between a desired voltage value (1008), which is calculated based on the voltage signal (1002) and the one or more condition signals, and the voltage signal (1002) yields a voltage error signal ...
]]> 20100066288 http://www.patentstorm.us/applications/20100066282/description.html

Application Number:  20100066282

Publication Date:  2010-03-18

Inventors:  Friesen, Ulf; Hähle, Falk; Schmucker, Josef

The invention relates to a traction drive for the driving and generative braking of a rail vehicle or a combination of rail vehicles, at least one permanent-field synchronous motor and a traction current converter being associated with at least one axle of the rail vehicle or combination of rail vehicles. The traction current converter includes at least one pulse current converter on the engine side, and the clamps of the permanent-field synchronous motor are connected to a change-over switch ...
]]> 20100066282 http://www.patentstorm.us/applications/20100066281/description.html

Application Number:  20100066281

Publication Date:  2010-03-18

Inventors:  Friesen, Ulf; Hähle, Falk

The invention relates to a traction drive for the driving and generative braking of a rail vehicle or a combination of rail vehicles, a permanent-field synchronous motor and a traction current converter being respectively associated with at least two axles of the rail vehicle or combination of rail vehicles. The traction current converter includes at least one pulse current converter on the engine side, and the clamps of the permanent-field synchronous motor are connected to a change-over ...
]]> 20100066281 http://www.patentstorm.us/applications/20100066280/description.html

Application Number:  20100066280

Publication Date:  2010-03-18

Inventors:  Brown, Gerald; Marchand, David G.; Gunzburger, John; Williams, Matthew E.

A retarding system for an electric drive machine (100) includes a direct current (DC) link (312), at which a DC voltage is developed, disposed between a rectifier (206) and an inverter (208). A first contactor switch (216) electrically communicates with a first rail of the DC link (312), and a second contactor switch (216) electrically communicates with a second rail of the DC link (312). A first resistor grid (214) is connected in ...
]]> 20100066280 http://www.patentstorm.us/applications/20100066279/description.html

Application Number:  20100066279

Publication Date:  2010-03-18

Inventors:  Frankel, Scott; Best, Christopher

An electronic system for controlling a fan motor includes a microcontroller and a drive circuit. The microcontroller draws power from a first voltage source and generates control signals for sending drive current to stator coils of a fan motor via the drive circuit. The electronic system further includes a second voltage source to provide the microcontroller with an amount of energy sufficient to operate for a short period of time when the voltage of the first voltage source drops below a ...
]]> 20100066279 http://www.patentstorm.us/applications/20100066278/description.html

Application Number:  20100066278

Publication Date:  2010-03-18

Inventor:  De Jong, Jurjen Jan

The present invention relates to a system, lifting column and method for an energy efficient lifting and lowering a load, such as a vehicle. The system according to the invention comprises:

• • a lifting column comprising a frame with a movable carrier and a drive which acts on the carrier, wherein the drive comprises a power source for power supply ...
    ]]> 20100066278 http://www.patentstorm.us/applications/20100066277/description.html
  • Application Number:  20100066277
  • Publication Date:  2010-03-18
  • Inventor:  Bailey, Bradley
  An electric drive system includes a prime mover connected to a generator (204), which is controlled in part by an excitation current. The generator (204) makes electrical power available on a dc link (312). A method of load demand and power generation balancing within the electric drive system includes determining a voltage of the dc link (312) and determining a torque command by an operator of the system. A speed for each of one or more drive motors (210) ...
  ]]> 20100066277 http://www.patentstorm.us/applications/20100066276/description.html
• Application Number:  20100066276
• Publication Date:  2010-03-18
• Inventors:  Trollier, Thierry; Aigouy, Gerald; Buquet, Jonathan

The invention relates to a method for absorbing the displacement, under the influence of an external force, of at least one plunger (10,20) in a linear electrodynamic motor comprising a least an induction coil (11, 21) magnetically coupled with the plunger. Said method comprises the steps of: detecting in said induction coil a current induced (I′_ind) amplified relative to the induced current. The invention can be applied to cryogenic machines on board space ...
]]> 20100066276 http://www.patentstorm.us/applications/20100066275/description.html

Application Number:  20100066275

Publication Date:  2010-03-18

Inventors:  Fazekas, Peter; GIEBEL, James

A method and apparatus of driving a motor in a light scanning arrangement. The method includes the following steps: (1) driving a drive coil with a drive signal to oscillate a scan mirror and a light beam reflected from the scan mirror; (2) generating a feedback signal having zero crossings during oscillation of the scan mirror by a feedback coil in proximity to the drive coil; (3) integrating the feedback signal to generate an integrated feedback signal; and (4) processing the integrated ...
]]> 20100066275 http://www.patentstorm.us/applications/20100066274/description.html

Application Number:  20100066274

Publication Date:  2010-03-18

Inventor:  GRIMM, Mathias

The invention relates to a switch element comprising an actuating element that can be impinged upon by an energy accumulator and is mounted so that it can be moved along a trajectory. At least two energy accumulators are used to impinge the actuating element and the number of the energy accumulators impinging the actuating element varies in predetermined positions of the ...
]]> 20100066274 http://www.patentstorm.us/applications/20100066167/description.html

Application Number:  20100066167

Publication Date:  2010-03-18

Inventor:  Schmidt, Josef

A load includes a device for its inductive power supply, the device including an insertion part, the power supply of the load being provided after the insertion part is inserted into the ...
]]> 20100066167 http://www.patentstorm.us/applications/20100066166/description.html

Application Number:  20100066166

Publication Date:  2010-03-18

Inventors:  Yoshinaga, Fumitaka; Takamatsu, Naoyoshi

In a hybrid vehicle, rocker outer reinforcements serving as vehicle side frame members in a vehicle width direction extend in a vehicle front-rear direction. An electric power cable is provided such that a portion thereof along the vehicle front-rear direction is placed along an inner side surface of the rocker outer reinforcement in the vehicle width direction. An electric power cable is provided such that a portion thereof along the vehicle front-rear direction is placed along an inner side ...
]]> 20100066166 http://www.patentstorm.us/applications/20100066098/description.html

Application Number:  20100066098

Publication Date:  2010-03-18

Inventors:  GAINFORD, DAVID MICHAEL; HOLT, JONATHAN EDMUND

An engine having at least one stage of propeller rotor blades, and a load, the at least one stage being associated with electrical generation means to generate electricity for the load. The load is switchable into a high load state in the event of an overspeed signal from the rotor blades. Also a method of controlling rotor overspeed of an engine, characterised by the steps of:

• ...
  ]]> 20100066098 http://www.patentstorm.us/applications/20100065291/description.html
  • Application Number:  20100065291
  • Publication Date:  2010-03-18
  • Inventors:  Gerbaud, Nicolas; Vion, Peter; Fanjas, Guillaume; Grare, Didier; Meniere, Frédéric; Albin, Franck
  A power hoe is provided, which includes an electric motor operating tools for work in the ground and at least one battery intended to power the motor and having a set of functionalities. The power hoe is able to operate in at least two operating modes selected according to at least one information item representative of a level of charge remaining in the battery or batteries. These operating modes include, at least: a normal operating mode, in which all of the functionalities of the equipment ...
  ]]> 20100065291 http://www.patentstorm.us/applications/20100064706/description.html
• Application Number:  20100064706
• Publication Date:  2010-03-18
• Inventors:  Asai, Masahiko; Hattori, Makoto; Nakagami, Takashi; Nakano, Koji; Takashige, Takayuki

There is provided a control device of a permanent-magnet type synchronous motor that sets a synchronous operation current at start-up in response to a current limiting value determined from the temperature of an inverter that supplies three-phase power to the permanent-magnet type synchronous motor, that monitors an output voltage or an output current of the inverter during a rotation stabilizing period after start-up, and that updates the synchronous operation current using this output voltage ...
]]> 20100064706 http://www.patentstorm.us/applications/20100064677/description.html

Application Number:  20100064677

Publication Date:  2010-03-18

Inventors:  Inoue, Hiroaki; Kawaguchi, Tadashi; Morinaga, Jun

A work machine includes: hydraulic actuators 21, 22, 23, 31, and 32; a capacitor 61 for storing electric power when a generator motor 44 operates as a generator and for supplying electric power when the generator motor 44 operates as a motor; and a swing electric motor 10, the hydraulic actuators 21, 22, 23, 31, and 32 and the swing electric motor 10 are operated by operation of operating levers 50, 70. The work machine ...
]]> 20100064677 http://www.patentstorm.us/applications/20100060966/description.html

Application Number:  20100060966

Publication Date:  2010-03-11

Inventors:  Cheong, Young-min; Lee, Kyoung-woo; Kwon, Jae-hwan; So, Hyoung-Jong; Kim, Hong-hee

An actuator using a piezoelectric element and a method of driving the same. The actuator includes at least one piezoelectric cell moving by displacement according to an input voltage, at least one piezoelectric sensor sensing the displacement of the at least one piezoelectric cell, an error detector detecting an error in the at least one piezoelectric sensor, and a feedback signal generator generating a feedback signal corresponding to the error, thereby performing micromirror driving and ...
]]> 20100060966 http://www.patentstorm.us/applications/20100060245/description.html

Application Number:  20100060245

Publication Date:  2010-03-11

Inventors:  Namuduri, Chandra S.; Shoemaker, Kenneth J.

Cathode-anode voltage across free-wheeling diodes in an active rectifier is used in the determination of switching points when the free-wheeling diode is forward biased. Hysteretic switching is accomplished through the selection of conductive and non-conductive switching threshold. The switching thresholds are further selected to prevent voltage oscillations at zero current crossings and reduce delays during deactivation to prevent ...
]]> 20100060245 http://www.patentstorm.us/applications/20100060228/description.html

Application Number:  20100060228

Publication Date:  2010-03-11

Inventor:  Woodward, Arthur E.

A blower motor assembly having a variable speed motor that is suitable for direct, drop-in replacement in a residential HVAC (heating, ventilation, and air conditioning) system that employs a PSC motor. The blower motor assembly includes at least a neutral input and two hot AC line connections, one for connection to the heating power source and the other to the cooling power source. A sensing circuit senses which of the inputs is energized by sensing either voltage or current on the inputs. The ...
]]> 20100060228 http://www.patentstorm.us/applications/20100060227/description.html

Application Number:  20100060227

Publication Date:  2010-03-11

Inventors:  Zocholl, Stanley E.; Patel, Subhash C.

An accurate slip calculation for providing monitoring and protection to an electric motor. The slip calculation is made using a minimum value of stator resistance as the initial stator resistance, where the minimum value of stator resistance is the minimum value of stator resistance calculated during an initiation period of the motor. The initiation period may be a predetermined time period or a predetermined number of cycles during the motor startup. The initiation period may start after a ...
]]> 20100060227 http://www.patentstorm.us/applications/20100060226/description.html

Application Number:  20100060226

Publication Date:  2010-03-11

Inventor:  Ide, Yuji

A motor control system suppresses vibration of a machine base and achieves high-speed positioning without using a special sensor but using a model control system. A first feedback section outputs a first feedback command generated based on model machine base position information and containing at least position information on the machine base. A second feedback section outputs a second feedback command containing a filtered model torque command. A differential between the sum of the first ...
]]> 20100060226 http://www.patentstorm.us/applications/20100060225/description.html

Application Number:  20100060225

Publication Date:  2010-03-11

Inventor:  KOSAKA, Yusuke

The present invention may be applied to a drive device, a travel device, and a drive device control method which are suitable for use in a robot arm and a twin cycle, for example. By eliminating (reducing) the opportunity of the use exceeding a rated torque of a servo motor, it is possible to increase the machine reliability and set an appropriate safety factor so as to reduce device costs. The operation value during the actual machine operation obtained by {(effective ...
]]> 20100060225 http://www.patentstorm.us/applications/20100060224/description.html

Application Number:  20100060224

Publication Date:  2010-03-11

Inventor:  CHEN, Chien-Hsun

The present invention relates to a method and a circuit of controlling a speed of a brushless motor of a ceiling fan. The circuit includes a motor PWM duty consumption sampling unit and a motor speed sampling to sense a PWM duty and a speed of the brushless motor. A central processing unit is provided to compare the PWM duty and the speed of the brushless motor to a preset maximum PWM duty and a preset maximum speed. When the PWM duty reaches to the preset maximum PWM duty first, the central ...
]]> 20100060224 http://www.patentstorm.us/applications/20100060223/description.html

Application Number:  20100060223

Publication Date:  2010-03-11

Inventors:  Sakai, Kazuto; Yuuki, Kazuaki

A permanent magnet rotating electrical machine capable of conducting a variable speed operation at high output in a wide range from low speed to high speed and improving efficiency and reliability in a wide operating range. Two kinds of permanent magnets having different shapes or different magnetic characteristics are embedded in a rotor core, to form a magnetic pole. The permanent magnets arranged at the magnetic pole include a permanent magnet whose product of coercive force and thickness ...
]]> 20100060223 http://www.patentstorm.us/applications/20100060222/description.html

Application Number:  20100060222

Publication Date:  2010-03-11

Inventors:  Inoue, Noriyuki; Kifuku, Takayuki; Kimata, Masahiro; Tsutsumi, Kazumichi; Fujimoto, Chiaki; Kezobo, Isao

An electric motor control apparatus that can quickly and accurately locate a short-circuit fault point. The electric motor control apparatus includes: a current controller determining respective phase voltage commands according to currents flowing in respective phases of an electric motor and a torque current command; a switching element drive circuit instructing, based on the respective phase voltage commands, an inverter to perform a switching operation; the inverter receiving a switching ...
]]> 20100060222 http://www.patentstorm.us/applications/20100060221/description.html

Application Number:  20100060221

Publication Date:  2010-03-11

Inventors:  Liou, Fou-Ming; Yang, Jia-Lin

A fan module, especially a fan module which may reduce a rotating speed of a fan automatically when an object with static electricity gets into the fan is provided. The fan module includes a frame, a fan, an electrostatic induction unit and a controller. The fan is disposed in the frame, and the electrostatic induction unit is disposed on the frame and adjacent to the fan. The controller is electrically coupled to the electrostatic induction unit. When an object with static electricity gets ...
]]> 20100060221 http://www.patentstorm.us/applications/20100060220/description.html

Application Number:  20100060220

Publication Date:  2010-03-11

Inventors:  Terada, Kei; Nagano, Tetsuaki; Maekawa, Kiyoshi; Hayasaka, Emiko

A computing unit simulates an ideal operation of a vibration excitation actuator by using at least a model operation parameter and the vibration-excitation movable mass data and calculates a parameter corresponding to acceleration/deceleration thrust for moving the vibration-excitation movable mass. A vibration isolation controller determines a control content of a vibration isolation driving unit based on the parameter corresponding to the acceleration/deceleration thrust and controls an ...
]]> 20100060220 http://www.patentstorm.us/applications/20100059240/description.html

Application Number:  20100059240

Publication Date:  2010-03-11

Inventor:  Schmidt, Heike

Disclosed is a method for screwing in and tightening a screw connection (1) to a predetermined tightened level (2), especially a predetermined torque level (2) or a predetermined pretension level, with the aid of a hand-held screwing tool (3) comprising a regulated drive unit (4) and/or control functionality, particularly an electric nut runner (3). A tightening phase (B-C-D), during which the screw head rests against the supporting surface (6) ...
]]> 20100059240 http://www.patentstorm.us/applications/20100057284/description.html

Application Number:  20100057284

Publication Date:  2010-03-04

Inventors:  Gong, Jian; Zhou, Xuguang; Tang, Xiaohua; Yu, Ming; Liu, Nan; Yang, Guangming

The present invention discloses a method and apparatus for controlling a motor for an electric vehicle. The method and apparatus calculates the current acceleration a of the motor according to the detected rotor position values in real-time, and if the current acceleration a is greater than a predetermined forward acceleration a0, the output torque of the motor is decreased. If the acceleration a is less than a predetermined backward acceleration a1, then the output torque of the motor is ...
]]> 20100057284 http://www.patentstorm.us/applications/20100055642/description.html

Application Number:  20100055642

Publication Date:  2010-03-04

Inventors:  Rothenwaender, Michael; Kment, Christoph; Koelndorfer, Juergen; Brugger, Wilhelm

A fluid-operated medical or dental handle with a device for limiting the rotational speed to a maximum rotational speed value is disclosed. The handle comprises a rotating part that can be induced to rotation by a driving fluid for driving a tool connectable to the rotating part, an electrodynamic transducer driven by the rotating part for induction of an electric voltage, wherein the electrodynamic transducer has at least one coil and a magnetic element and at least one switch element for ...
]]> 20100055642 http://www.patentstorm.us/applications/20100054964/description.html

Application Number:  20100054964

Publication Date:  2010-03-04

Inventors:  Li, Ching-Sheng; Lo, Shen-Min; Tsai, Ming-Jung; Teng, Tzu-Cheng

A rotating speed adjustment circuit for a heat dissipation fan includes a first node, a second node, a reception end for receiving a first control signal, a first resistor coupled to a voltage source and the first node, a second resistor coupled to the first node and the second node, a third resistor coupled to the second node and a ground end, a capacitor coupled to the first node and the ground end, a transistor coupled to the reception end, the second node and the ground end, an oscillator ...
]]> 20100054964 http://www.patentstorm.us/applications/20100052601/description.html

Application Number:  20100052601

Publication Date:  2010-03-04

Inventor:  Pummer, Alexander

A voltage control circuit is disclosed. A power factor corrector may utilize the control circuit to provide power factor correction for an AC induction motor. An AC induction motor system may combine the power factor correct with an AC induction ...
]]> 20100052601 http://www.patentstorm.us/applications/20100052600/description.html

Application Number:  20100052600

Publication Date:  2010-03-04

Inventor:  CECCONI, Pietro

Starting device for electric motors provides a circuit including: a first branch connected at one end to a common point and at the opposite end to the start winding of the motor, whereon a starting capacitor, a resistor and fixed contacts of a relay are inserted in series respectively; a second branch in parallel with the first branch, connected at one end to the common point and at the opposite end to the main or run winding of the motors whereon the coil of the relay is inserted; a third ...
]]> 20100052600 http://www.patentstorm.us/applications/20100052599/description.html

Application Number:  20100052599

Publication Date:  2010-03-04

Inventors:  NAGAI, Kazunobu; Shibayama, Takeshi; Maekawa, Sari

An inverter device driving an induction motor including main and auxiliary windings both having different winding specifications includes a three-arm inverter circuit having phase output terminals connected to the main winding, the auxiliary winding and a neutral winding of the induction motor respectively and converting a DC power supply to two-phase substantially sinusoidal PWM voltage, a current detector detecting currents of the respective main and auxiliary windings from a DC power supply ...
]]> 20100052599 http://www.patentstorm.us/applications/20100052598/description.html

Application Number:  20100052598

Publication Date:  2010-03-04

Inventors:  Iwata, Akihiko; Hayashi, Yoshitomo

There are provided a smoothing capacitor (71) for storing an induced electromotive force generated by a three-phase induction motor (5), a regenerative transistor (81 to 86) for switching a terminal voltage of the smoothing capacitor to carry out a power regenerating operation over a three-phase AC power supply (3), a line voltage detecting portion (6) for detecting a line voltage of the three-phase AC power supply, a fundamental waveform generating ...
]]> 20100052598 http://www.patentstorm.us/applications/20100052597/description.html

Application Number:  20100052597

Publication Date:  2010-03-04

Inventors:  Ferreira, Placid M.; Dong, Jingyan

An electrostatic drive includes a first electrode and a second electrode responsive to a drive signal. The drive signal includes an actuation signal constituent and a sensing signal constituent. The sensing signal constituent is at a frequency higher than a natural mechanical resonant frequency of the electrostatic drive. In response to the actuation signal constituent, displacement between the first electrode and the second electrode changes, which is evaluated by detecting a change in an ...
]]> 20100052597 http://www.patentstorm.us/applications/20100052596/description.html

Application Number:  20100052596

Publication Date:  2010-03-04

Inventors:  Ue, Yoshihiro; OTSUKA, Shin

An ultrasonic motorized stage includes a base part, first and second tables, first and second linear ultrasonic motors which respectively drive the first and the second tables, and first and second optical linear sensors which respectively detect the amount of move of the first and the second tables. The first and the second linear ultrasonic motors and the first and the second optical linear sensors are arranged in positions, which are at sides other than the front side of the ultrasonic ...
]]> 20100052596