Abstract: An organic EL device comprising: an organic EL element; a first transistor that controls a drive current of the organic EL element in accordance with a brightness adjustment voltage; and a temperature correction circuit that corrects the brightness adjustment voltage in accordance with a temperature; wherein the temperature correction circuit includes: a second transistor that has a same temperature characteristic as the first transistor; a resistor element that is connected to the second transistor; and an operational amplifier that controls the second transistor such that a predetermined reference voltage and a voltage across the resistor element become equal to each other; wherein the temperature correction circuit corrects the brightness adjustment voltage in accordance with an output from the operational amplifier.

Abstract: Disclosed are a light emitting diode illumination apparatus and a control method thereof. The light emitting diode illumination apparatus includes a a light source that includes a plurality of light emitting diode channels including one or more light emitting diodes, and emits light by application of a rectified voltage obtained by converting an AC voltage, and a control circuit that selectively provides current paths according to a change in a level of the rectified voltage through a plurality of switching circuits connected to the light emitting diode channels, and controls pulse widths of control pulses provided to the switching circuits such that an current supplied to the light source of each channel follows a waveform of the rectified voltage.

Abstract: Dynamic light emitting device (LED) lighting adjustment systems and related methods are disclosed. In one aspect, a method can receive, at an LED lighting fixture, a lighting adjustment signal corresponding to a target lighting level and determine a delta value that represents a difference between a current lighting level of the LED lighting fixture and the target lighting level and a step time value associated with the determined delta value. The method can further include adjusting the current lighting level of the LED lighting fixture to a new current lighting level for the duration of the step time value and repeating the determining and adjusting steps until the new current lighting level equals the target lighting level.

Abstract: A bleeder circuit for use in a power converter of a lighting system includes a current sense circuit coupled between first and second terminals of an input of a driver circuit to be coupled to drive a load. The current sense circuit is coupled to output a current sense signal in response to an input current through an input of the power converter coupled to the input of the driver circuit. An edge detection circuit is coupled between the first and second terminals to output an edge detection signal in response to an input signal between the first and second terminals. A variable current circuit is coupled between the first and second terminals to conduct a bleeder current between the first and second terminals in response to current sense signal and further in response to the edge detection signal.

Abstract: The present invention provides a backlight dimming circuit, a dimming method of the same and a liquid crystal display thereof.

Abstract: An automobile LED driving device includes a current setting portion to set multiple reference currents independently from one another for multiple respective current setting resistors connected externally, a current controller to select one of the multiple reference currents based on a control signal provided from outside, and an output transistor to control an output current to an automobile LED connected externally based on the reference current selected by the current controller.

Abstract: A lighting control system and a method for controlling the same are provided. The lighting control system includes at least one lighting device transmitting a wireless communication signal having unique identification information and controlled by a received wireless communication signal, and a user terminal receiving the wireless communication signal transmitted from the at least one lighting device, sorting and registering the at least one lighting device according to a strength of the wireless communication signal transmitted from the at least one lighting device, and pairing the user terminal with the registered lighting device to control the lighting device. Accordingly, a plurality of lighting devices located in a remote area can be conveniently registered and controlled from a certain location.

Abstract: A buckle assembly is configured to releasably interlock with a seat belt tongue. The assembly includes a light emitting diode (LED) positioned at least partially within a housing. The LED is configured to emit a light when the seat belt tongue is not interlocked with the assembly. An optical guide is positioned at least partially within the housing and composed of a substantially light transmitting material. The LED is positioned such that the light emitted by the LED passes through the optical guide. In a first embodiment, the optical guide is an ejector member at least partially positioned within the housing. In a second embodiment, the optical guide is a lens at least partially positioned within the housing.

Abstract: A PWM signal generator section for generating a plurality of PWM signals with different phases to be respectively fed to a plurality of loads, and a phase difference setting section for setting phase differences among the PWM signals are provided. The phase difference setting section sets phase differences ?t_shift(n,n+1) calculated based on an effective current Ia(n) flowing to each of the loads, where the number of the loads is N, according to the equations below: Ia_all = ? n = 1 N ? Ia ? ( n ) ? t_shift ? ( n , n + 1 ) = t_pwn × Ia ? ( n ) / Ia_all where n=1 to N (where N is an integer of two or more, and n+1=1 when n+1>N), and t_pwm is a cycle of the PWM signals.

Abstract: The present invention proposes a thrust ripple mapping system in a precision stage with the thrust ripple mapping system comprising a moving stage, a load cell, a plurality of motors and a processing component. The load cell is coupled to the moving stage. The motors are employed in moving the load cell and the moving stage. The processing component takes a thrust force measurement at each of a plurality of moving increments of the load cell.

Abstract: An energy storage system for connection to a traction power supply that provides power to an electric vehicle. The energy storage system includes a power controller that controls a DC-DC converter to transfer electrical energy from the traction power supply to electrical energy storage when the train is braking. The power controller also controls the converter to transfer electrical energy from the electrical energy storage to the traction power supply when the train is accelerating. The controller slows the rate of energy transfer when upper and lower voltage boundary limits of the electrical energy storage are approached, respectively.

Abstract: An apparatus for controlling a switched reluctance motor with use of a power conversion circuit. In the apparatus, a command voltage setter sets a command voltage for a coil of the motor, where the command voltage is set to change gradually during either or both of a ramp-up period and a ramp-down period of the command voltage. A voltage controller controls an applied voltage to the coil to the command voltage set by the command voltage setter by operating the power conversion circuit.

Abstract: A movement control system for a drilling plant includes a first hydraulic circuit with an inlet duct and an outlet duct for a working fluid, a pumping device of reversible type promoting the circulation of the fluid, first electric machine mechanically coupled to the pumping device to promote circulation of the fluid in the first hydraulic circuit, wherein the first electric machine is connected to an electric circuit connectable to the net or to an electric accumulator. The first electric machine selectively operates as an electric motor to promote circulation of the fluid in a first sense and to drive the actuating means during the rise of the drilling head, and as an electric generator upon fluid flow in a second, opposite sense during the lowering of the drilling head to inject in the network or in the accumulator the electric power generated by the first machine.

Abstract: The invention relates to a motor drive for an on-load tap changer with an electrical DC motor and a braking device for denned braking of this motor. According to the invention, the braking device has a first diode (D1), which, depending on the direction of rotation, is connected in series with or in opposition to the armature winding (AW) of the DC motor. In accordance with a further feature of the invention, the braking device has a second diode (D2), which is connected permanently in parallel with the shunt winding (NW) of the DC motor.

Abstract: A motor control system comprising a motor configured to operate at a rotational velocity and a control module in communication with the motor is provided. The control module is configured to receive a torque command indicating a desired amount of torque to be generated by the motor, obtain a rotational velocity of the motor, receive a desired phase advance angle for driving the motor; and generate a voltage command indicating a voltage magnitude to be applied to the motor based on the rotational velocity of the motor, the motor torque command, and the desired phase advance angle by using a plurality of dynamic inverse motor model equations that (i) allow the desired phase advance angle to exceed an impedance angle of the motor and (ii) specify that the voltage magnitude is a function of a voltage magnitude of a previous voltage command.

Abstract: An objective of the present invention is to improve current detection accuracy and to reduce noise of carrier frequency. A motor apparatus and a motor drive apparatus calculate motor currents Iu, Iv, and Iw using a DC bus current detected value Idc of an inverter and control a magnitude and a phase of an applied voltage of a motor to drive the motor. A carrier adjuster decreases a carrier frequency Fc of the inverter if a motor output is relatively larger and that increases the carrier frequency Fc of the inverter if the motor output is relatively smaller. A pulse shift adjuster shifts an interphase waveform of a PWM pulse according to the carrier frequency Fc.

Abstract: A brushless electrical machine has at least one phase winding which produces torque to drive a load. The control system for the machine is able to vary the flux and current supplied to a phase so as to vary the torque output as a function of the rotor position. The energisation is reduced at particular angles to produce a dip in the torque profile, thus ensuring that, if the drive stalls, it does so at a predetermined position, for example where the losses in the drive are minimised.

Abstract: Systems and methods of estimating a motor position of a motor are disclosed. One exemplary system and method involve observing motor currents of the motor at two different times. Average motor voltages of the motor are determined between the two different times. Average back electro motive force (BEMF) values of the motor are calculated between the two different times. The BEMF values are in conformity with the observed motor currents and the average motor voltages. Another exemplary system and method for estimating a rotor position of a motor involve a motor position estimator that receives information from the motor and estimates a rotor position for a future time.

Abstract: A sensorless motor controller includes a variable link control, including a radiation-hardened field programmable gate array (FPGA) and a back electromotive force (EMF) decoder circuit. The back EMF decoder infers the position of a rotor of the motor. A filter on the decoder conditions the back EMF signal and has multiple cutoff frequencies which can be dynamically controlled by the FPGA in order to compensate for phase shift in the back EMF signal. The FPGA also controls a variable DC link and its digital speed control loop.

Abstract: A brushless motor device controlled by a carrier of DC positive and negative power wires comprises a controller. The controller outputs a positive DC wire for outputting a positive DC voltage and a negative DC wire for outputting a negative DC voltage. The positive and negative DC voltages include a carrier signal. The controller is connected to a driver which is applied to receive the carrier signal and control a rotating mode of a brushless DC motor according to the carrier signal. Therefore, the carrier signal allows the driver and the controller to be connected by the positive and negative DC wires and attains the object of transmitting the signal, thereby reducing the material of the signal wire and the manufacture cost.

Abstract: A motor driving device, which controls a rotation number of a brushed motor by outputting a command signal to a motor controller placed in a current supply path, includes: a noise detecting unit including at least one of: a high voltage side noise detecting unit which detects high voltage side noise from brush noise included in the monitor voltage, based on whether a monitor voltage is larger than a first threshold voltage; and a low voltage side noise detecting unit which detects low voltage side noise from the brush noise included in the monitor voltage, based on whether the monitor voltage is smaller than a second threshold voltage; and a calculating unit which outputs the command signal to the motor controller to control the rotation number of the motor to reduce a occurrence number of the brush noise, based on at least one of the occurrence numbers.

Abstract: A pinch detection apparatus for an opening-and-closing member actuated by a motor, the pinch detection apparatus includes a reference data storage portion calculating load data on the basis of a rotation speed of the motor and an environmental temperature, the reference data storage portion storing the load data and the environmental temperature as reference load data and reference temperature data, respectively, a drive load calculation portion calculating drive load data, and a pinch determination portion configured to determine an occurrence of pinch on the basis of a comparison result obtained by comparing a difference between the reference load data and the drive load data with a threshold, the pinch determination portion configured to correct a relative relation between the difference between the reference load data and the drive load data, and the threshold on the basis of a relative relation between a reference temperature and a drive temperature.

Abstract: Method to command and control an electric motor of an automation unit. The unit comprises a mechanical member, driven by a drive shaft, a central command and control unit, and a position detection mean. The method provides that the central command and control unit receives the position signals of the shaft of the electric motor and/or of the mechanical member from the position detection mean, divides the operating cycle into a plurality of sub-phases equal with respect to each other, consisting of elementary units and, for each of said sub-phases, or multiple of sub-phases, selects predefined or self-learnt current reference values, and generates a signal consisting of an instantaneous current reference (feed forward) for the electric motor.

Abstract: An electrical system is provided. The electrical system includes a first 2-pole direct current source and/or sink, a second 2-pole direct current source and/or sink, a first 3-phase direct current/alternating current converter, a second 3-phase direct current/alternating current converter, and an electrical machine. The electrical machine is designed with 6 phases, and has a first 3-phase stator system and a second 3-phase stator system that are electrically isolated from each another.

Abstract: A power conversion apparatus includes a power conversion element; a capacitor; a control circuit that outputs a control signal to control operation of the power conversion element at the time of driving a load; a discharge control unit that outputs a discharge control signal to control operation of the power conversion element at the time of discharging the capacitor; a power supply circuit that generates a power supply voltage, on the basis of a voltage between both ends of the capacitor; and a driver unit that outputs a driving signal to operate the power conversion element, on the basis of the control signal or the discharge control signal. The power conversion element is operated according to the discharge control signal, a current is flown from the capacitor to the load through the power conversion element, and the capacitor is discharged.

Abstract: The invention provides a winch and method for raising and lowering a boat anchor attached to an anchor rope, comprising: an electric motor (10) operable to turn the winch in a rope raising direction or a rope lowering direction and powered from a power source supplying a supply voltage; and a boost controller (CB1-3,S1-2,K1-6,Kx1-4,25,30) for applying a boosted voltage higher than the supply voltage to the motor (10) so as to increase a turning speed of the motor when the motor is operating in the rope lowering direction.

Abstract: The inventive apparatus includes a driving clock generating section generating a driving clock having a driving frequency and driving a pulsed motor based on an inputted base clock having a base frequency; wherein in a predetermined period. The driving clock generating section operates in a through-output mode in which the base clock is outputted as the driving clock and in an idle mode in which during an idle period a stationary signal not including any pulse is outputted as the driving clock. The idle period is configured such that an average frequency of the driving clock during the predetermined period is equal to the driving frequency.

Abstract: A frequency-divided clock generating section 4 generates a frequency-divided clock having a predetermined driving frequency by dividing a base clock having a base frequency based on a set frequency-division ratio. A division-ratio calculating section 2 calculates a real number ratio of the driving frequency relative to the base frequency and sets a rounded frequency-division ratio obtained by rounding the real number ratio as the frequency-division ratio and calculates a rounding error in the rounding of the real number ratio. An accumulated error calculating section 3 adds the rounding error to an accumulated error when the frequency-divided clock generating section 4 generates a frequency-divided pulse which is a one cycle of frequency-divided clock.

Abstract: A motor driving circuit for driving a step motor includes a logical circuit synchronized with a step pulse signal to control a bridge circuit connected to a coil of the step motor and control electric power supplied to the coil of the step motor, a counter electromotive force detecting unit configured to detect a counter electromotive force generated between both ends of the coil, and a step-out predicting unit configured to assert a detection signal indicating a sign of step-out of the step motor, when the counter electromotive force detected at a detection time after the lapse of a time calculated by multiplying a predetermined coefficient to a length of a high impedance period of the coil since transition to the high impedance period is lower than a predetermined threshold voltage.

Abstract: A method comprises providing a line-start synchronous motor. The motor has a stator, a rotor core disposed within the stator, and a motor shaft. In accordance with a step of the method, a coupling for coupling a load to the motor is provided. The coupling has a motor shaft attachment portion configured to provide substantially concentric contact around the shaft at the end of the motor shaft. The coupling has a load attachment portion configured to operatively connect to a load. In accordance with a step of the method, a load is coupled to the motor with the coupling, and driven from start to at least near synchronous speed during steady state operation of the motor with a load coupled thereto. The motor shaft attachment portion may comprise a bushing assembly with matching and opposed tapered surfaces that cooperate to secure the motor shaft attachment portion around the motor shaft.

Abstract: An electric drive system for a PM electric machine, where the machine includes a stator, a rotor and an inverter. Each phase of the machine includes a stator winding separated into a first winding section and a second winding section and two switches in the inverter electrically coupled to the winding sections. The drive system includes a switch assembly for each phase electrically coupled to the inverter switches and the first and second winding sections, where the switch assembly includes at least two switch states. A first switch state of the switch assembly electrically couples the first winding section and the second winding section in series to the inverter switches and a second switch state electrically couples the second winding section to the inverter switches and electrically disconnects the first winding section from the inverter switches.

Abstract: In a two-way direct balance circuit for series cells, a control unit activates a pulse generator to transmit high frequency switch control signals, and a flyback converter is utilized to perform electromagnetic transition between the cells that rapidly conveys power from the cells with high RSOC to the flyback converter and to the cells with low RSOC. The direct energy transfer between cells provides fast and highly efficient performance.

Abstract: An apparatus for performing balancing on cells connected in series and included in a module may comprise a first switching unit including first cell selection switches respectively connected to the cells, and configured to connect a first cell to be balanced to a balancing unit; a second switching unit including second cell selection switches respectively connected to the cells, and configured to connect a second cell to be balanced to the balancing unit; a controller configured to measure voltages of each cell, and controlling operations of the first switching unit, the second switching unit, and the balancing unit based on information on the first and second cells, wherein the first and second cells are selected by the controller using the measured voltages; and/or the balancing unit, connected to the first and second switching units, and configured to perform balancing between the first and second cells selected by the controller.

Abstract: A charging system for a traction battery is disclosed. The charging system includes a power grid, a stationary battery, a first controlled power supply, a second controlled power supply, and a switching unit. The first controlled power supply is configured to provide electrical power from the power grid to the stationary battery, at a first controlled rate. The second controlled power supply is configured to provide electrical power from the stationary battery to a traction battery, at a second controlled rate, higher than the first controlled rate.

Abstract: An electrical system, an input apparatus and a charging method for the input apparatus are provided. The input apparatus includes a main body, a processor, an antenna module, an energy storing component and an electrode. The main body includes a stylus body and a stylus head. The processor, antenna module and the energy storing component are disposed in the main body. The energy storing component is used to provide electrical energy to the processor and the antenna module. The electrode is disposed on a surface of the main body, and the electrode is coupled to the energy storing component. Wherein, when the stylus input apparatus contacts with the electronic apparatus, the electronic apparatus provides an electrical energy to the energy storing component through the electrode.

Abstract: A system and method for a universal battery charger is presented. An RFID tag on a battery-powered device communicates battery information to the charger to allow the charger to optimally charge the battery. The battery charger has a charging cord with a charge plug at an end of the cord to connect the charging cord to a port on a device. The charging cord contains an RFID antenna near the end of the cord. The RFID antenna has a limited reading range. When the charge plug is inserted into a charging port on a battery-powered device, an RFID reader uses the RFID antenna to read the information stored on the RFID tag. Based on the RFID tag information, a charging selector selects a current and voltage to be output to charge the device through the device port.

Abstract: An apparatus for charging a battery is provided and includes a power adaptor and a controller. The power adaptor has a communication interface coupled to a cable of the power adapter for receiving command-data and generates a DC voltage and a DC current according to the command-data. The controller is coupled to the battery for detecting a battery voltage of the battery and generates the command-data according to the battery voltage. The DC voltage and the DC current are coupled to the cable and programmable according to the command-data. The command-data is coupled the cable through a communication circuit of the controller.

Abstract: One embodiment of the invention is an apparatus for determining the initiation of a charging process for a secure charging apparatus. The apparatus has circuitry for authorising a user, circuitry for confirming connection of a device, and circuitry for confirming charging of the device.

Abstract: Provided is a charge and discharge control circuit and a battery device which ensure high safety, even when a charger is reversely connected. The charge and discharge control circuit includes a consumption current increase circuit for supplying a current from a power supply terminal to a ground terminal, the consumption current increase circuit including a switch circuit configured to be turned on in response to a detection signal from a charger reverse connection detection circuit, which indicates that a charger is reversely connected.

Abstract: A charging circuit for charging a battery is provided. A power supplier has a communication interface coupled to a cable for receiving command-data and generates a DC voltage and a DC current in accordance with the command-data. A controller is coupled to the battery for detecting a battery-voltage and generates the command-data in accordance with the battery-voltage. A switch is coupled to the cable for receiving the DC voltage and the DC current through a connector. The DC voltage and the DC current generated by the power supply are coupled to the cable, and the DC voltage and the DC current are programmable in accordance with the command-data. The command-data generated by the controller is coupled the cable through a communication circuit of the controller. The controller is coupled the connector for detecting a connector-voltage and control an on/off state of the switch in response to the connector-voltage.

Abstract: An automatic protocol (AP) for a USB charger is provided, that enables recognition of the voltage pin (D?) and pin (D+) needs of the device being charged, and controls the voltage level to charge the device, based on the recognized voltage needs.

Abstract: A battery charger on which power conversion components for converting commercial power to direct current power are mounted, includes a core frame formed into a C-letter shape in horizontal cross section. The components at least producing heat among the power conversion components are mounted on one side confined by a C-letter cross section of its both sides. An outer housing is attached to the core frame so as to cover the core frame, and a fan supplies cooling air to a region confined by the C-letter shaped cross section of the core frame.

Abstract: A wireless charger includes an anti-slippery charger mat having a mat, inductive charger, power circuit board, and a plug, and a portable charging connector of the wireless charger including a casing, power inductor, receiving hole, indicator, and a connector terminal. The plug of the mat is inserted into a power socket of a vehicle, and the portable charging connector is inserted into the inductive charger of the mat through the receiving hole so that a device connected to the connector terminal of the portable charging connector can be powered or charged. The anti-slippery charger mat placed on top of a dashboard of vehicle is capable of holding objects placed on it during moving of the vehicle.

Abstract: A wireless charging system includes a power transmission unit for transmitting power and a power reception unit for receiving the power transmitted from the power transmission unit in a non-contact manner and supplying the power to a receiving load. The transmission unit includes a power transmission coil for generating a magnetic field based on an alternating voltage supplied. The power reception unit includes a power reception coil for generating an induction voltage by electromagnetic induction from the magnetic field generated by the power transmission coil, a rectifying unit for rectifying and smoothing the induction voltage generated by the power reception coil, and a voltage step-down unit for stepping down a direct voltage outputted from the rectifying unit. A winding ratio of the power transmission coil and the power reception coil is 1:n where n is an integer larger than 1.

Abstract: The general field of this invention is electrical connectors and their actuating mechanism. More specifically, this invention teaches a novel connector and its actuating mechanism for establishing an electrical connection between two arbitrarily oriented objects such as an arbitrarily parked EV and infrastructure. In most of the prior art, a conductive connection requires precise and guided alignment of mating conductors. The prior art achieves this either by a sensor guided search or mechanical guides to being the two objects into desired alignment. In order to tolerate a wider misalignment between the two objects, the guides have to have a large footprint. In contrast, this invention breaks down the process of aligning the two halves of connector into a series of simple motions—when carried out in a particular order, would deliver the necessary alignment of the two sides of a connector.

Abstract: A vehicle includes a battery and a charge plate electrically connected with the battery. The vehicle also includes a control system that causes an association signal to be repeatedly transmitted during a battery charge procedure to maintain charging of the battery via the charge plate, and in response to an object being detected in the vicinity or predicted to enter the vicinity of the charge plate, causes the transmission of the association signal to be interrupted to stop charging of the battery.

Abstract: A magnetic sheet of an embodiment includes a laminate of a plurality of magnetic thin plates. The laminate constituting the magnetic sheet includes a first magnetic thin plate and a second magnetic thin plate different in kind from the first magnetic thin plate. The first magnetic thin plate has a magnetostriction constant exceeding 5 ppm in an absolute value, and the second magnetic thin plate has a magnetostriction constant of 5 ppm or less in an absolute value. Alternatively, the first magnetic thin plate has a thickness of from 50 to 300 ?m, and the second magnetic thin plate has a thickness of from 10 to 30 ?m.

Abstract: An electronic device includes: a power receiving section configured to receive electric power transmitted using a magnetic field or an electric field; and a state informing section configured to inform a device state of the electronic device, by using the electric power received by the power receiving section. When an abnormal state is detected as the device state, the state informing section also informs the abnormal state by using the received electric power. A feed unit includes: a power transmission section configured to perform electric power transmission using a magnetic field or an electric field, to a device to be fed; and a control section configured to continue the electric power transmission by the power transmission section, even when an abnormal state in the device to be fed is detected.

Abstract: A charging device is provided that can terminate charging an onboard battery at a charging completion time point which is set by an user. The charging device includes: an AC-DC converter that converts AC power supplied from the external power source to DC power; an AC relay that connects and disconnects the AC-DC converter to and from the external power source; a DC relay that connects and disconnects the AC-DC converter to and from the battery; and a controller that controls the AC and DC relays. The controller is configured to perform: closing the AC relay and specifying a level of power that the external power source can supply: determining a charging start time point from the specified level of power and the charging completion time point; and starting battery charging by closing the AC and DC relays at the determined charging start time point.

Abstract: Embodiments include a rechargeable battery pack, system, and power adapter that allow the rechargeable battery pack to both power a host device though a set of host contacts and provide power, through the power adapter, via a set of charging contacts that interface with the power adapter. The power adapter contains a voltage source which activates a control circuit to disable a discharge protection circuit in the battery pack to allow current to discharge through the charging contacts.