Electricity: motive power systems inventions 05/09

20090134820 - Drive unit for vehicle: A vehicle drive unit that includes a first rotary machine; an electric differential; a second rotary machine that transmits power from the electric differential to wheels via a first power transmission interrupt mechanism; a second power transmission interrupt mechanism that connects the second rotary machine to an input member of... Agent: Oliff & Berridge, PLC

20090134822 - Controller of multi-phase electric motor: A controller of a multi-phase electric motor has a drive section having an upper arm switching element and a lower arm switching element for driving the multi-phase electric motor, a single current detection section for detecting a current value of the multi-phase electric motor, a pulse width modulation signal generation... Agent: Osha Liang L.L.P.

20090134821 - Motor driving circuit: A motor driving circuit for full-wave single-phase driving a motor includes a position detection unit, a turn-on signal generation unit, and switching devices that define an H-bridge circuit. The turn-on signal generation unit includes a differential amplifier arranged to produce a trapezoid wave signal, and a square wave generation circuit... Agent: Nidec Corporation C/o Keating & Bennett, LLP

20090134823 - Multi-level programming of motor for a ventilation system: A method of constant airflow control for a ventilation system is disclosed. The method includes various controls to accomplish a substantially constant airflow rate over a significant change of the static pressure in a ventilation duct. One control is a constant I·RPM control, which is primarily used in a low... Agent: Knobbe Martens Olson & Bear LLP

20090134824 - Bldc motors: A 2-phase BLDC motor is driven by a trapezoidal waveform. For one-half of the motor rotation period T, the phase is driven by the trapezoidal waveform and for the other half-period, the coil remains undriven. Accordingly, if the optimum slope duration is around 10% of the duration of the driven... Agent: Townsend And Townsend And Crew, LLP

20090134825 - Static switch for motors of climate control units and climate control unit comprising the switch: A static switch for DC motors of climate control units, comprising a signal side and a power side, which are mutually separated by means of optoisolators, the side comprising in input at least one terminal for a motor on/off signal and a terminal for a pulse width modulation signal PWM... Agent: Modiano & Associati

20090134826 - Controller of multi-phase electric motor: A controller of a multi-phase electric motor has a drive section, including a pair of upper arm switching element and a lower arm switching element, for driving the multi-phase electric motor, a single current detection section for detecting a current value of the multi-phase electric motor, a pulse width modulation... Agent: Osha Liang L.L.P.

20090134827 - Compensation of motor control using current-rpm relation for a ventilation system: A method of constant airflow control for a ventilation system is disclosed. The method includes various controls to accomplish a substantially constant airflow rate over a significant change of the static pressure in a ventilation duct. One control is a constant I·RPM control, which is primarily used in a low... Agent: Knobbe Martens Olson & Bear LLP

20090134828 - 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 determined based at least in part on... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090134829 - Wizard for configuring a motor drive system: An electronic line shaft comprising a motor drive comprising a velocity noise filter coupled to receive a feedback position signal and operable to filter the feedback position signal to generate a feedback velocity signal where the noise filter has at least one controllable filter parameter that affects filter operating characteristics... Agent: Rockwell Automation, Inc./(qb)

20090134830 - Apparatus and method for controlling vehicular wiper: A wiper controlling apparatus capable of discriminating between a signal change at the time of a wiper blade passage and that at the time of a raindrop impact so as to allow a wiper control promptly responding to the change in the condition of the sensing surface is provided. An... Agent: Hamre, Schumann, Mueller & Larson, P.C.

20090134831 - Deriving values of parameters in electrical machines: An electrical drive system includes an electrical machine controlled by an electronic controller and requires control signals representing quantities associated with the operation of the electrical machine. These signals may represent, for example, rotor position and flux or current. A controller includes an estimation routine to use the known magnetic... Agent: Haynes And Boone, LLPIPSection

20090134832 - Dynamo-electrical machine having a temperature detection measurement system: A dynamo-electrical machine includes a stator and a rotor co-rotating with a shaft. A rotor position transmitter is arranged on one end of the shaft, whereas contactless sensors are arranged stationarily facing the rotor. Data from the contactless sensors representing the surface temperature of the rotor together with position data... Agent: Henry M Feiereisen, LLC Henry M Feiereisen

20090134833 - Phase current sampling and regulating apparatus and methods, and electric motor drive systems: In various embodiments, a phase current sampling apparatus (300, 600, FIGS. 3, 6), an electric motor drive system (100, FIG. 1), and a motor vehicle (1200, FIG. 12) include switching circuitry adapted to receive first and second phase current waveforms. The switching circuitry provides the first phase current waveform during... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090134834 - Motor control device: A motor control device includes: a motor-current detection unit; a rotational-angular-speed calculation unit for calculating a rotational angular speed of a motor; a rotational-angle-change-amount calculation unit for multiplying the rotational angular speed by a predetermined time so as to calculate a motor-rotational-angle change amount within a predetermined time; a basic-drive-value... Agent: Rabin & Berdo, PC

20090134835 - Electric motor drive systems, motor vehicles, and methods of phase current regulation: In various embodiments, an electric motor drive system (400, FIG. 4) and a motor vehicle (1000, FIG. 10) include an inverter (404, FIG. 4) adapted to generate (604, FIG. 6), based on inverter control inputs, a number, N, of phase current waveforms (118, FIG. 1), and a phase current sampling... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090128063 - Method for driving vibration cutter: A method for driving a vibration cutter includes inputting an alternate current in an actuator section to vibrate a plate-like blade connected to the actuator section, wherein the blade section is vibrated in a plate face direction and a thickness direction of the blade section.... Agent: Oliff & Berridge, PLC

20090128064 - Actuation device having shape memory alloy component: The present invention provides an actuation device having a shape memory alloy component. The present invention utilizes a length contraction occurred to the shape memory alloy component during its phase transformation from martensite to austenite. The length contraction causes a slider, a carrier and a base to move relatively. Also,... Agent: Bacon & Thomas, PLLC

20090128065 - Fan with soft start function: A bathroom ventilator fan with the soft-start function includes an impeller and a motor. The motor is coupled to the impeller for driving the impeller to rotate. The motor has a control module for driving and controlling the rotation speed of the motor according to a soft-start signal. The soft-start... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20090128066 - Rotation speed controlling system for shredder motor: A system for controlling the rotation speed of a shredder motor is disclosed. It consists of a bridge rectifier circuit, a forward/reverse controlling switch, a motor speed switch, and AC motor coils. By changing a switch, it is possible to activate the following four modes: forward fast, reverse fast, forward... Agent: Venable

20090128067 - Interface cord and system including an interface cord: An interface cord is operable to connect an external controller to an electrical machine. The interface cord includes a first connector having a first pin configuration, a cable coupled to the first connector, a second connector coupled to the cable and having a second pin configuration different from the first... Agent: Michael Best & Friedrich LLP

20090128068 - Interface cord and system including an interface cord: An interface module is operable to download data from an electrical machine. The interface module includes a cable for transferring data, the cable having a first connector at a first end thereof, a circuit board having a programmable device electrically coupled in circuit to the cable, and a memory connected... Agent: Michael Best & Friedrich LLP

20090128069 - Motor control apparatus and control apparatus for hybrid electric vehicles: The motor control apparatus 100 has a PWM driving mode in which to input a PWM signal to the inverter 8 and perform PWM driving of the AC motor 4, and a rectangular-wave driving mode in which to input a rectangular-wave signal to the inverter 8 and perform rectangular-wave driving... Agent: Crowell & Moring LLP Intellectual Property Group

20090128070 - Brushless dc motor with reduced current ripple: A commutation circuit for driving a brushless DC motor is controlled according to a commutation cycle composed of alternating primary steps and transitional steps. The commutation circuit includes pairs of field effect transistors coupled in series between the high voltage and low voltage terminals of a DC power supply. Output... Agent: Frederick W. Niebuhr Haugen Law Firm Pllp

20090128071 - Extrapolation of back emf signals in brushless dc motors: A controller is provided for operating a DC motor through a commutation circuit and for synchronizing the commutation circuit to motor position and speed by measuring back EMF voltages along commutation cycle steps during which the measured phase is not being driven. In connection with each such step, the back... Agent: Frederick W. Niebuhr Haugen Law Firm Pllp

20090128072 - Dual lane control of a permanent magnet brushless motor using non-trapezoidal commutation control: A motor control system and method implements non-trapezoidal motor control and meets established “fail passive” regulatory guidelines. In particular, a system and method of controlling a multi-phase brushless motor that includes a multi-pole permanent magnet rotor, and an individual, electrically isolated stator winding associated with each phase that includes a... Agent: Honeywell International Inc.

20090128073 - Brushless motor control method and brushless motor: In a brushless motor for an electric power steering device having a configuration of 2 poles and 3 slots, or of an integral multiple thereof, a stator coil is supplied with current containing a higher harmonic component. A difference of 0.5% to 1.5% is provided between the higher harmonic component... Agent: Wenderoth, Lind & Ponack, L.L.P.

20090128074 - Initial rotor position detection and start-up system for a dynamoelectric machine: A method for detecting an initial rotor angular position and starting a dynamoelectric machine having a stator and a rotor includes the steps of driving the dynamoelectric machine into partial magnetic saturation to determine the initial rotor angular position of the dynamoelectric machine, and starting the dynamoelectric machine utilizing the... Agent: Carlson, Gaskey & Olds, P.C.

20090128075 - Motor: A stator of a motor includes a stator core formed of a plurality of teeth and an annular yoke connecting the teeth to each other, and windings wound on the teeth. A rotor of the motor confronts the stator while supported rotatably, and includes a rotor magnet, a rotor core,... Agent: Ratnerprestia

20090128076 - Rotary electric system with neutral-point powering system: the second multiphase inverter to intermittently supply a second phase current to the second star-connected multiphase stator windings per phase to charge second electromagnetic energy in the second star-connected multiphase stator windings per phase, the second electromagnetic energy charging the capacitor. The first phase current for each phase and the... Agent: Nixon & Vanderhye, PC

20090128077 - Thermally actuated overload tripping device: A circuit breaker with overload and short-circuit protection functions for a motor, on which is mounted a thermally actuated overload tripping device including an adjustment dial to set a value corresponding to a rated current value of the motor on a scale. The dial has a standard setting pointer mark... Agent: Rabin & Berdo, PC

20090128078 - Motor and motor speed controlling system: A motor and a motor speed control system are disclosed. Two power signal lines and one feedback/speed-control signal line are coupled between a control device and the motor. The two power signal lines electrically connect the control device to the motor. The feedback/speed-control signal line bi-directionally transmits signals coming from... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20090128079 - Industrial robot system: An industrial robot system including at least one industrial robot including at least one manipulator located in a robot cell, a control unit for controlling the manipulator, a portable operator control device for teaching and manually operating the manipulator, a detecting unit detecting when the portable operator control device leaves... Agent: Venable LLP

20090128080 - System and method for controlling multiple servo motors: The present invention discloses a method for controlling multiple servo motors, comprising: connecting a first plurality of servo motors in series; providing a corresponding switch in the series connection path for at least every servo motor other than the last one; sequentially setting an ID to each servo motor except... Agent: Tung & Associates

20090128081 - Electric steering system: An electric steering system is provided with: a steering torque detection unit which detects a steering torque acting on the shaft; a brushless motor which includes a rotor and a stator having multi-phase stator coils, and generates an assisting torque for assisting the steering torque; a current supply switching unit... Agent: Arent Fox LLP

20090128082 - Switching system for controlling the starting of an electrical motor: A low cost switching system for an electrical motor, which is speed sensitive, direction of rotation insensitive, load insensitive and voltage fluctuation insensitive. The switch contains a power supply, a control circuit, a zero cross detector circuit, a triggering circuit and an electronic switch to provide the switching action. A... Agent: Banner & Witcoff, Ltd.

20090128083 - Motor drive with var compensation: Apparatus and methods are disclosed for providing VAR compensation using an AC motor drive, in which an off-line motor drive is configured to prevent power transfer to a motor load output, with a line side converter being operated to control a voltage or current in an intermediate circuit for leading... Agent: Rockwell Automation, Inc./fay

20090128084 - Motor having controllable torque: A controllable motor includes a rotor. A first stator winding set is operable, upon being energized, to generate and apply a first torque to the rotor. A second stator winding set independent of the first stator winding set is operable, upon being energized, to generate and apply a second torque... Agent: Honeywell International Inc.

20090121659 - Charge control apparatus, electrically powered vehicle and electric storage charge control method: When it is determined that an electric storage is to be charged from a commercial power source, a controller sets a control target of a voltage of a power line to be controlled by a boost converter, based on a voltage of the commercial power source. Specifically, the controller sets... Agent: Oliff & Berridge, PLC

20090121660 - Controlling adjustable bed features with a hand-held remote control: The present invention provides a handheld adjustable bed remote control that may comprise a circular group of input buttons. A first input button in the circular group of input buttons, upon activation, may control a head position of an adjustable bed. A second input button in the circular group of... Agent: Strategic Patents P.C..

20090121661 - Electrical control device: An electrical control device is described.... Agent: King & Spalding

20090121662 - Semiconductor device and method of controlling electrostatic actuator: A semiconductor device controls an electrostatic actuator having first and second electrodes formed so as to come close to each other when transition occurs from opened state to closed state by electrostatic attraction against elastic force. The semiconductor device includes: a voltage generation unit generating different applied voltages to be... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090121663 - Brushless motor: A brushless motor includes: a permanent magnet; a driving coil moving relative to the permanent magnet; a sensor coil disposed to the permanent magnet so as to generate a sensor coil induced voltage having a same phase of a driving coil induced voltage generated in the driving coil; and a... Agent: Harness, Dickey & Pierce, P.L.C

20090121664 - Open/close body drive device: The open/close body drive device is capable of restarting a brushless motor, without using magnetic pole sensors, so as to securely drive an open/close body in an arbitrary direction when any of the magnetic pole sensors has failed. When a CPU (1) detects an abnormal logic as a detection pattern... Agent: Birch Stewart Kolasch & Birch

20090121665 - Motor drive circuit and disc device using the same: An energization signal generating circuit respectively compares back electromotive forces generated in coils of each phase of a motor with a midpoint voltage of each phase, and generates energization signals. A pulse signal generating circuit generates a pulse signal in which duty ratio is controlled according to torque. A ramp... Agent: Cantor Colburn, LLP

20090121666 - Frequency converter, motor, motor drive system and maintenance method for motor drive system: A frequency converter for outputting a power to drive a motor, having: an inverter unit for inverting a d.c. power to an a.c. power; a control unit for controlling the inverter unit; and a housing for supporting at least the inverter unit and control unit, wherein a rise time change... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090121667 - Electronic control system: The invention relates to an electronic control system for controlling a voltage across a load, in particular across a fan motor of a motor vehicle, as a function of a control signal, comprising: a setting transistor, a transistor, which activates the control channel of the setting transistor, as well as... Agent: Walter A. Hackler, Ph.d. Patent Law Office

20090121668 - Shutdown path performance test for permanent magnet ac motor in hybrid powertrain: A diagnostic system for a hybrid vehicle comprises a motor control module and a fault diagnostic module. The motor control module controls torque output of an electric motor having a predetermined number of phases. The fault diagnostic module determines a position of a rotor of the electric motor, aligns the... Agent: Harness Dickey & Pierce, P.L.C

20090121669 - Motor drive device and motor drive device control method: A motor drive device (100) includes a boost converter (12) boosting a power supply voltage and outputting a boosted voltage; an inverter (14) receiving the boosted voltage from the boost converter (12) and driving a motor (M1); and a controller (30) giving a target value of the boosted voltage to... Agent: Oliff & Berridge, PLC

20090121670 - Constructive arrangement in a soft-starter: The present invention refers to a soft-starter having a new constructive arrangement comprising SCRs and a by-pass contactor connected through busbars that also provide an external connection to the soft-starter. The SCRs (10) and the contacts (30, 31) of the by-pass contactor are positioned next to the heatsinks (201, 202,... Agent: Hughes Hubbard & Reed LLP

20090121671 - Valve timing control apparatus: An electric power supply driver executes duty control of turning on and off of a selected switching element to supply electric power to a corresponding stator coil in a case where an actual rotational direction and a target rotational direction of a motor shaft coincide with each other. Furthermore, the... Agent: Nixon & Vanderhye, PC

20090115352 - Method and apparatus for constraining output torque in a hybrid powertrain system: A powertrain system includes a transmission operative to transfer power between an engine coupled to an input member and a plurality of torque machines and an output member, A method for controlling the powertrain system includes monitoring system operation and determining an output torque request, determining a closed loop speed... Agent: Cichosz & Cichosz, PLLC

20090115349 - Method and control architecture to determine motor torque split in fixed gear operation for a hybrid powertrain system: An electro-mechanical transmission is operative to transmit mechanical torque originating from an engine and first and second electric machines to an output member. The electric machines are electrically-operatively connected to an energy storage system for electrical power flow therebetween. A Method for operating the electro-mechanical transmission includes operating the electro-mechanical... Agent: Cichosz & Cichosz, PLLC

20090115350 - Method for determining an achievable torque operating region for a transmission: A method for controlling a transmission operative to transfer power between an input member and torque machines and an output member includes determining available power, motor torque constraints, and other constraints on torque transfer. Equations are provided, transformed to a second coordinate system and simultaneously solved. An achievable torque operating... Agent: Cichosz & Cichosz, PLLC

20090115354 - Method for electric power boosting in a powertrain system: A powertrain system is operative to transfer power between an input member and a plurality of power actuators and an output member to generate an output torque. The power actuators are connected to an energy storage device. A method for controlling the powertrain system includes monitoring operating conditions of the... Agent: Cichosz & Cichosz, PLLC

20090115351 - Method for managing electric power in a powertrain system: A powertrain system includes a transmission operative to transfer power between a plurality of power actuators and an output member, and an energy storage device. A method for controlling the powertrain system includes establishing a first set of electric power limits and a second set of electric power limits for... Agent: Cichosz & Cichosz, PLLC

20090115353 - Method of determining output torque limits of a hybrid transmission operating in a fixed gear operating range state: A hybrid transmission is operative to transfer power between an input member and first and second torque machines and an output member in a fixed gear operating range state. The first and second torque machines are connected to an energy storage device. A method for controlling the hybrid transmission includes... Agent: Cichosz & Cichosz, PLLC

20090115355 - Electric power control device, electric powered vehicle including the same, and method for controlling electric power of electric powered vehicle: A load on a vehicle is connected to first and second neutral points in first and second motor generators through a relay circuit and power output lines. A control device controls inverters depending on a requested voltage of the load on a vehicle such that a potential at the first... Agent: Oliff & Berridge, PLC

20090115356 - Power transmission device, and display device and display panel pedestal that have the power transmission device: A power transmission device capable of adjusting a torque to be applied to an output shaft easily and removing a backlash between gears exactly, and a display device and a display panel pedestal that have the power transmission device. A power transmission device 101 includes a display panel 102, an... Agent: Hamre, Schumann, Mueller & Larson P.C.

20090115357 - Detection and delimitation of maximum stator currents: A device for driving a magnetic levitation train has at least one controllable power supply unit that feeds at least one multi-phase power supply line, and a long stator with stator windings that extend in switching sections of the long stator. Each switching section can be connected to at least... Agent: Lerner Greenberg Stemer LLP

20090115358 - Hybrid vehicle and method of controlling hybrid vehicle: A hybrid vehicle includes a power generator that generates electric power using power from an internal combustion engine; a motor that outputs power for travel of the hybrid vehicle; a first inverter connected to an electric power storage device and the motor to drive the motor; a second inverter connected... Agent: Oliff & Berridge, PLC

20090115360 - Pwm control circuit and pwm control method: The PWM control circuit includes a polarity determination unit, a full wave rectification unit, an adjustment unit that generates an adjusted waveform signal by adjusting waveform of the full wave rectification signal, and a carrier signal generating unit that generates a fixed frequency carrier signal. The PWM control circuit further... Agent: Harness, Dickey & Pierce, P.L.C

20090115362 - Electric motor control device, electric vehicle, and hybrid electric vehicle: An electric motor control device includes a direct current power source; an inverter interposed between an electric motor and the direct current power source, the inverter device controlling an exchange of electric power therebetween; an inverter control unit that generates PWM pulses having a duty ratio corresponding to voltage command... Agent: Oliff & Berridge, PLC

20090115361 - Permanent magnet motor and washing machine provided therewith: A permanent magnet motor includes a rotor including a rotor core and a plurality of permanent magnets located inside the rotor core and establishing a plurality of magnetic poles. In the permanent magnet motor, the permanent magnets include a plurality of types of permanent magnets having different coercive forces. The... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20090115363 - Electronic commutator circuits: The electronic commutator circuits provide forced commutation enhancements that can be embedded within a known electronic commutator to overcome its low speed torque limitation. The forced commutation enhancements to the basic switched stage use a pair of thyristors. Capacitors may be pre-charged and synchronized to supplement coil voltages when discharged,... Agent: Kirschstein, Israel, Schiffmiller & Pieroni, P.C.

20090115359 - Adjustment device for a motor vehicle seat: An adjustment device for a motor vehicle seat that includes an electric motor, a gear connected to the electric motor, a mechanical adjustment unit connected to the gear and a control circuit, at least one sensor being associated with the control circuit for detecting a critical situation of the motor... Agent: Cantor Colburn, LLP

20090115364 - Electric motor driving device, and air conditioner using the same: Disclosed is a motor-driving device capable of protecting an inverter from breakdown. First current-protecting section retains reference voltage value Vref1 as a preset value. If the current to be fed into inverter exceeds value Vref1, first current-protecting section shuts off the output of driver and outputs a first warning to... Agent: Pearne & Gordon LLP

20090115365 - Method of determining torque limit with motor torque and battery power constraints: A method to determine a limit torque associated with an electro-mechanical transmission includes determining electric motor torque constraints and battery power constraints. A limit torque function and a standard form of the limit torque function are determined. The limit torque function and the motor torque constraints and the battery power... Agent: Cichosz & Cichosz, PLLC

20090115366 - Pivoting and barrier locking operator system: An operator system for moving a barrier between limit positions, includes an operator motor assembly mounted to the barrier, wherein the motor assembly is movable between an operating position and a locking position with the motor assembly blocking movement of the barrier. A bias assembly allows the motor assembly to... Agent: Renner Kenner Greive Bobak Taylor & Weber