Abstract: Displacement devices comprise a stator and a moveable stage. The stator comprises a plurality of coils shaped to provide pluralities of generally linearly elongated coil traces in one or more layers. Layers of coils may overlap in the Z-direction. The moveable stage comprises a plurality of magnet arrays. Each magnet array may comprise a plurality of magnetization segments generally linearly elongated in a corresponding direction. Each magnetization segment has a magnetization direction generally orthogonal to the direction in which it is elongated and at least two of the magnetization directions are different from one another. One or more amplifiers may be connected to selectively drive current in the coil traces and to thereby effect relative movement between the stator and the moveable stage.

Abstract: An electrical device comprising: a high voltage DC power storage system; a variable frequency drive comprising DC terminals, a variable frequency inverter, and a variable drive output, wherein said high voltage DC power source is direct fed to said DC terminals; and an AC motor connected to said variable drive output.

Abstract: In one embodiment, a method of forming a circuit to control an electrical machine may include, configuring the circuit to obtain voltage and current information of the voltage over and current in one or more stator coils; configuring the circuit to determine a stator current vector and a stator voltage vector; configuring the circuit to determine an amplitude and phase of a fundamental vector of the stator voltage vector and stator current vector; and configuring the circuit to determine a fundamental vector of a back-EMF.

Abstract: This motor control device generates a voltage command value from a current command value, performs feedback control by means of a detected current flowing through a motor, and is provided with: a speed control unit that performs speed control of the motor; a voltage measurement unit that measures a voltage command value that is on the basis of the output of the speed control unit when the motor is rotating at a set speed; and a correction value calculation unit that calculates a correction value for the rotational position of the motor on the basis of the measured voltage command value.

Abstract: The invention refers to a method for controlling a brushless, electronically commutated electric motor, a main AC voltage being rectified into an intermediate circuit direct voltage and this direct voltage being fed by an intermediate circuit containing an intermediate circuit capacitor to an inverter which is controlled by a motor control means for feeding and commutating the electric motor whereby the intermediate circuit direct voltage is monitored in respect of its voltage level and is compared with a predetermined limiting value and, on reaching or exceeding the limiting value, the intermediate circuit direct voltage is limited to the predetermined limiting value by clocked disconnection and reconnection.

Abstract: Provided is a sensorless BLDC motor apparatus for providing a drive current allowing the rotor of the BLDC motor to be aligned in a predetermined direction during an initial position setting section (or for a first period of time), and providing a drive current allowing a frequency thereof to be varied at predetermined time intervals so as to accelerate the rotational speed of the BLDC motor during an open loop section (or for a second period of time), and a method using the same.

Abstract: A magnetic force estimating unit (38) for estimating the magnetic force of a permanent magnet of a rotor of a motor (6), a determining unit (39), and a demagnetization responsive timing changing unit (40) are provided in an inverter device (22) or an electric control unit (21). The magnetic force estimating unit (38) performs a determination of the magnetic force with a predetermined rule from detection signals of at least two of the motor rotation number, motor voltage and motor current. The determining unit (39) determines whether or not a demagnetization occurs. In response to the result of determination by the determining unit (39), the demagnetization responsive timing changing unit (40) changes the timing, at which the maximum electric current relative to the phase of the rotor is fed, so that with respect the motor drive by the inverter device the reluctance torque of the motor may be increased.

Abstract: A motor control system comprises a plurality of control apparatuses and a host control apparatus, wherein each of the control apparatuses include a position control unit controlling position based on a position command and commanded speed from the host control apparatus, a speed control unit controlling speed based on a speed command from the position control unit, a current control unit controlling current based on a current command from the speed control unit, and a current amplifier which amplifies motor driving current based on a voltage command from the current control unit, and wherein the current control unit includes a voltage saturation processing unit which determines whether the voltage command has exceeded supply voltage of the current amplifier, and which outputs the result of the determination, and a voltage saturation notifying unit which notifies the host control apparatus of the result of the determination made by the voltage saturation processing unit.

Abstract: When a counter-electromotive force generated by an inductive load is applied to the drain of a switch element, the gate of the switching element may pull the gate potential toward the direction opposite to its original potential due to capacitance coupling of the drain-gate capacitance, and this may cause a malfunction. To cope with this, a switch element that pulls the potential to the reverse direction is provided and controlled to turn on at timing at which the counter-electromotive force is applied.

Abstract: The invention provides a motor driving apparatus of the invention comprises a power semiconductor device (11) for power conversion; a driving unit (12) controlling driving of the power semiconductor device (11) to supply power to a motor; a heat transmission structure (13) transferring a heat generated from the power semiconductor device (11) to a cooling medium via a heat conduction member; a temperature detection unit (14) detecting a real temperature of the heat conduction member; a current detection unit (15) detecting a current value of an output current from the power semiconductor device (11) to the motor; a temperature estimation unit (16) calculating an estimated temperature of the heat conduction member based on the output current value; and an abnormality detection unit (17) determining presence or absence of an abnormality in the heat transmission structure (13) based on a difference between the real and the estimated temperatures.

Abstract: An actuator comprising a single actuator housing containing within it a motor, a controller, a memory, and a position sensor having an output, a user interface for causing a first threshold value to be stored in the memory, and the controller configured and arranged to stop the motor as a function of the position sensor output and the first threshold value.

Abstract: A power control device has a voltage-regulator from power source to load, the load configurable to receive power at least at a first or second rate. The device has monitor circuitry to measure power; signal circuitry for signaling a power-reception rate to the load; and circuitry for resetting the load when the power source is overloaded. The device resets the load periodically to the second rate when the load is at the first rate. In embodiments, the power source is a thermoelectric generator or solar panel. In embodiments, the load couples through a USB connector. A companion method of charging smart loads includes applying power to the load; communicating power available to the load; configuring a battery charger in the load to absorb an amount of power less than that available; monitoring power, determining when changed configuration may optimize charging time of a smart load battery; and resetting the smart load to optimize current.

Abstract: A device and a method for an energy sharing network may include an energy store configured to store energy; an energy transmitter-receiver configured to transmit energy and energy related information to at least one neighbor device and to receive energy and energy related information from at least one neighbor device; and a controller configured to control the energy transmitter-receiver based on a predetermined condition.

Abstract: A battery system is disclosed that can internally heat a battery by consuming minimal battery energy and with short heating times.

Abstract: An electric charging apparatus is provided. The electric charging apparatus includes a ground determination signal generating unit measuring a current signal or voltage signal that is generated from power applied from a power supply unit, the ground determination signal generating unit generating a signal for determining whether the power supply unit is normally grounded on the basis of the current or voltage signal, a power control unit generating a power control signal on the basis of a ground determination detecting signal generated from the ground determination signal generating unit, and a power cutoff unit cutting power supply to a target device to be charged on the basis of the power control signal.

Abstract: A portable transfer device has input connectors and output connectors which can be used to transfer power from a first electronic device to a second electronic device. The connectors are housed in a main enclosure, which also has an auxiliary USB port. An internal power source is also housed in the main enclosure. The second electronic device can be charged through an output connector or a USB cable connected to the auxiliary USB port by draining power from the first electronic device or from the internal power source. A voltage regulation circuit is electrically connected between the input connectors and the output connectors, as well as between the auxiliary port and the input connectors. The voltage regulation circuit ensures a desirable output voltage. In addition to power transfer, the device enables data transfer when using USB connectors and ports to connect two devices.

Abstract: A device for inductive energy transfer between a stationary three-phase primary system and a mobile three-phase secondary system shows a stationary iron core part and two mobile iron core parts (3, 5) which are connected electrically in series are each designed as an equilateral triangle or as a star which spans an equilateral triangle and has limbs (3a, 3b, 3c; 5a, 5b, 5c) of equal length which run at the same angle in relation to one another, and supporting posts (3ay, 3by, 3cy; 5ay, 5by, 5cy) which start from the ends of said limbs, and also primary and secondary windings (4, 6) which are arranged at the same distance from one another. The device of simple design has a high degree of efficiency in respect of energy transfer. In the case of energy transfer only in the inoperative state, a stationary iron core part and a mobile iron core part can also be positioned directly one on the other without magnetic rails.

Abstract: A wireless charging station, an electric vehicle charged wirelessly, and a method of charging an electric vehicle are provided. A wireless charging station include a charging unit configured to transmit power wirelessly to an electric vehicle, using a source resonator installed in the charging station; and a driving unit configured to move a target resonator connected to the source resonator from a position at which the target resonator is mounted on the charging unit to an installation space of the electric vehicle, when the electric vehicle is disposed in a charging area of the charging station.

Abstract: Disclosed herein is a furniture having a wireless charging function, including: one or more transmission coil units disposed on the same plane of a flat plate of the furniture; and a central transmission controlling unit configured to select at least one transmission coil unit corresponding to a wireless power reception apparatus when the wireless power reception apparatus is placed on the flat plate, and to transmit a wireless power signal through the selected transmission coil unit, the central transmission controlling unit being installed separately from the plurality of transmission coil units.

Abstract: A control method of a wireless power receiving unit receiving charging power from a wireless power transmitting unit to perform wireless charging is provided. The control method includes receiving the charging power from the wireless power transmitting unit; detecting a change in a wireless charging environment; generating a message notifying of the change in the wireless charging environment; and transmitting the message notifying of the change in the wireless charging environment to the wireless power transmitting unit.

Abstract: A control method of a wireless power receiving unit receiving charging power from a wireless power transmitting unit to perform wireless charging is provided. The control method includes receiving the charging power from the wireless power transmitting unit; detecting a change in a wireless charging environment; generating a signal indicating detection of the change in the wireless charging environment; and transmitting the signal indicating the detection of the change in the wireless charging environment to the wireless power transmitting unit.

Abstract: A control method of a wireless power transmitting unit transmitting charging power to a wireless power receiving unit is provided. The control method includes receiving first signals from one or more wireless power receiving units; classifying wireless power receiving units to be communicated with from among the one or more wireless power receiving units based on reception intensities of the received first signals; transmitting wireless transmission power with predetermined level; receiving second signals including voltage information of the classified wireless power receiving units from the classified wireless power receiving units; and communicating with one or more wireless power receiving unit among the classified wireless power receiving units based on the wireless transmission power and the voltage information of the second signals.

Abstract: In a battery charger cradle, a battery incorporated in a battery built-in device is charged by electric power induced to an induction coil. The cradle includes a primary coil for inducing electromotive force to the induction coil, a casing having a top plate atop of which the battery built-in device is placed, a movement mechanism for moving the primary coil along an inner surface of the top plate, and a position detection controller for detecting a position of the battery built-in device placed on the top plate and controlling the movement mechanism to bring the primary coil closer to the induction coil in the battery built-in device. When the battery built-in device is placed on the top plate, the position detection controller detects the position of the battery built-in device, and the movement mechanism moves the primary coil closer to the induction coil in the battery built-in device.

Abstract: A wireless power charging system and a method thereof are provided. The system includes a power transmitter configured to charge one or more power receivers. The power transmitter includes a signal and control unit configured to detect the one or more power receivers present within a radio frequency range of a power transmitter, transmit a request for discovering each of the one or more power receivers, and determine whether a response is received from each of the one or more power receivers. The power transmitter further includes a regulator unit connected to the signal and control unit configured to modulate an amount of radiation to be transmitted based on the number of power receivers that provided a response and a power conversion unit connected to the regulator unit transmitting energy radiation to charge the one or more power receivers.

Abstract: A system for facilitating communication between a vehicle and a user includes a vehicle having a rechargeable battery and a communication and control subsystem. The communication and control subsystem is communicatively coupled to the battery to gather and transmit vehicle information, which may include battery information and a vehicle identifier. The system also includes a charging station having a charging station identifier and an electrical coupling between the charging station, a power source, and the vehicle. The electrical coupling is operable to charge the battery and includes a communicative coupling. The control subsystem is operable to receive communications from the user via the communicative coupling.

Abstract: A control system includes a first device configured to receive a first voltage, and convert the first voltage to a second voltage that varies according to a variation of the received first voltage. The control system also includes a second device configured to receive the second voltage and to change a charging rate of an energy storage device according to a variation of the received second voltage.

Abstract: A vehicle charging device configured such that both connectors 10, 20 are locked in a connected state by an advancing movement of a locking portion 43 of an actuator 41 to be locked to a locked portion 18 when the connection of the both connectors 10, 20 is detected by a connection detector 31 includes a locking portion detector 51 for detecting whether or not the locking portion 43 of the actuator 41 has advanced to a predetermined locking position, and a power supply controller 71 for setting a power supply path to an electrically conductive state on a condition that an advancing movement of the locking portion 43 to the predetermined locking position is detected by the locking portion detector 51.

Abstract: The present disclosure relates to a piezoelectric charging system, which has two operational modes: a vibration mode and a charging mode. The system includes a piezoelectric vibrator, a driving module, a switch selecting module, a rectifying and processing module and a charging control module. The present disclosure can make full use of the mechanical energy from human beings and the ambient environment to provide the electronic device with an important energy source. Furthermore, energy can be charged to the electronic devices in real time. Furthermore, the present disclosure provides a terminal device using the piezoelectric charging system.

Abstract: A battery-charging base for a portable information device, which is provided so as to easily connect and disconnect, to and from a battery-charging plug connector, a battery-charging slot for a portable information terminal, is a battery-charging base that is capable of holding one of a plurality of types of portable information terminals that are different in length and width sizes and positions of battery-charging slots provided at lower ends thereof, and charging the held one of the plurality of types of portable information terminals by inserting the battery-charging plug connector into the battery-charging slot of the held one of the plurality of types of portable information terminals.

Abstract: A method for reducing a total charge loss of battery cells by equalizing states of charge includes making an initial check as to whether a temperature of at least one balancing unit lies below a preselectable temperature limit. Thereupon a check takes place as to whether a charging process of the battery cells has completed and the state of charge of the battery cells is >90%. A determination then follows as to whether a maximum state of charge difference between battery cells lies above an adjustable limit (DELTA_SoC).

Abstract: A method for reducing a total loss of charge of battery cells by balancing states of charge includes checking boundary conditions as to whether a vehicle is in the park mode, whether a previous balancing step occurred in the past by at least a defined time period, whether a temperature of a balancing unit lies below an adjustable temperature limit and whether states of charge of all battery cells exceed a minimum state of charge. Additionally, the method includes determining a need for balancing such that a check is made as to whether a maximum difference of all states of charge of all battery cells is greater than an adjustable limit state of charge. Also the method includes, balancing by the balancing units if the first two steps of the method are affirmed. The balancing resistances are connected to respective battery cells for a predetermined time.

Abstract: Provided is a method for operating a molten salt battery having a sodium compound (NaCrO2) in a positive electrode and tin (Sn) in a negative electrode with a molten salt as an electrolytic solution. Although the operating temperature range of the molten salt battery is originally from 57° C. to 190° C., the molten salt battery is operated with an internal temperature thereof (temperature of electrodes and molten salt) set at from 98° C. to 190° C. to cause sodium to turn to a liquid phase. The sodium penetrates into a Sn—Na alloy micronized in the negative electrode, so that separation of the Sn—Na alloy is suppressed.

Abstract: Systems and methods for restoring service within electrical power systems are disclosed. The methods may include identifying a restoration path for an outage area within a power system, selecting a mobile energy resource connection site that is electrically connected to at least one of the restoration path and the outage area, sending power injection requests to a plurality of mobile energy resources, at least some of which may be proximate the connection site, receiving power injection acceptances from participating ones of the plurality of mobile energy resources, and implementing the restoration path. The systems may include a processor and a computer readable storage medium having a plurality of machine-readable instructions embodied thereon and con figured for execution by the processor to carryout the method.

Abstract: A power conversion device includes a sensor and a controller, The sensor detects a predetermined condition. The controller controls heating of a battery when the predetermined condition is detected by the sensor. The controller controls heating of the battery based on at least one of a battery charging operation or a battery discharging operation.

Abstract: A battery-state monitoring system for precisely and efficiently estimating the state and service life of each of a plurality of storage batteries while suppressing variations in voltage between the batteries in a large-scale power-supply system that is provided with the storage batteries charged with power generated by utilizing natural energy is provided. The system includes a power supply control device that detects a current in each storage battery, an end device that measures temperature, voltage, and internal resistance of each battery, the internal resistance being measured by using at least two or more kinds of frequencies, and a prime monitoring device that acquires measurement data from the end device corresponding to each battery and issues an instruction related to an operation to the power supply control device and the end device. The prime monitoring device estimates degradation of each battery based on one or more of temperature, voltage, internal resistance.

Abstract: In a method for adjusting a nickel-metal hydride storage battery, based on a correlation between a charge amount after valve opening and an increased amount of a discharge reserve capacity which are previously ascertained, the charge amount after valve opening corresponding to a target value of the set increased amount of the discharge reserve capacity is calculated and this calculated value is set as a target charge amount after valve opening. In a discharge reserve adjusting step, when a charge amount of the battery from the time when a safety valve device is opened after start of overcharge of the battery reaches the set target charge amount after valve opening, overcharge of the battery is terminated.

Abstract: [Problem to be Solved] To provide a regulator capable of more appropriately preventing the voltage of a battery from increasing beyond a full-charge voltage during a battery chattering. [Solution] A regulator 1 includes a rectifying circuit 2, a first battery detecting circuit 3, a first full-charge detecting circuit 4, a first differentiating circuit 5 having a fifth resistor r5 connected between a first terminal T1 and one end of a first capacitor C1 and a second capacitor connected in series with the fifth resistor r5 between the first terminal T1 and one end of the first capacitor C1, and a first driving circuit DR that controls the rectifying circuit 2 to rectify an alternating current according to output of an alternating-current generator ACG and controls the rectifying circuit 2 to operate or stop according to signal at one end of a first battery connecting switch element SW1.

Abstract: A wireless charger charges an electronic device. The wireless charger receives radio frequency (RF) from a wireless power transmitter and generates alternating current (AC) electricity. The wireless charger coverts the AC electricity to direct current (DC) electricity and charges the electronic device using the DC electricity.

Abstract: An on-demand electric power system for providing on-demand electric power in remote locations. The on-demand electric power system generally includes a protective housing, an engine-generator within the protective housing, a control switch electrically positioned between the engine-generator and an electric load, and a control unit in communication with the engine-generator and the control switch to control operation of the engine-generator along with electrical power to the electric load. The control unit detects when electrical power is required by an electric load and then first starts the engine-generator. After a period of time, the control unit then closes the control switch to provide electrical power to the electric load.

Abstract: The method according to the invention involves limiting the charging of a vehicle alternator by only authorizing progressive augmentation of a current duty cycle (DC) of an excitation signal (7) of the alternator from an initial duty cycle to an expected duty cycle (EpsU) calculated by a control loop (1, 5, 6) of the alternator. According to the invention, a complementary limitation of the charging of the alternator involves limiting the increase of the current duty cycle (DC) according to at least one parameter of the heat engine involving an angular acceleration (mot) and/or a rotation speed (Nmot) of the heat motor. In particular, this complementary limitation can additionally involve limiting the increase of the current duty cycle (DC) according to a negative value of the angular acceleration (mot).

Abstract: Power supply device for a moulding machine with an intermediate circuit, which can be connected with at least one drive of the moulding machine and is suitable for supplying the at least one drive with electrical energy; a supply module connected to the intermediate circuit; an energy storage device connected to the intermediate circuit, and a closed loop control device for closed loop controlling an energy content of the energy storage device, wherein the energy storage device can be closed loop controlled by means of the closed loop control device so that the energy content of the energy storage device does not go outside a range, in which a power input and/or a power output of the energy storage device is essentially constant.

Abstract: A PFC circuit includes: a switching circuit having a power switch; an on time control circuit for controlling an on time period of the power switch; a first off time control circuit; a second off time control circuit; and a logic circuit selectively controls the power switch working under CCM or DCM; when working under CCM, the first off time control circuit controls an off time period of the power switch and when working under DCM, the second off time control circuit controls the off time period of the power switch.

Abstract: A power supply device includes a linear regulator including an output stage amplifier, a current sensing circuit, and a switching regulator. The current sensing circuit detects an output current of the linear regulator, and is disposed in parallel with the output stage amplifier, in a configuration corresponding to the output stage amplifier. The switching regulator operates in accordance with an output signal of the current sensing circuit. The linear regulator and the switching regulator operate in collaboration with each other to generate an output voltage at an output node.

Abstract: A low-dropout voltage regulator apparatus includes a voltage source circuit, an error amplifier, an output transistor, a resistor-capacitor circuit, a detection circuit, and a current adjusting circuit. The voltage source circuit generates a reference voltage signal and at least one threshold voltage signal. The error amplifier receives the reference voltage signal and a feedback voltage signal to generate an output control signal. The output transistor provides an output current for the output terminal according to the output control signal. The resistor-capacitor circuit generates the feedback voltage signal using voltage dividing according to a voltage corresponding to the output current. The detection circuit compares at least one threshold voltage signal with the output voltage to generate at least one control voltage signal.

Abstract: In one embodiment a low-dropout regulator comprises a first differential amplifier (Nmos1) to receive an input voltage (Vin), a power transistor (T1) coupled to the first differential input pair (Nmos1), the power transistor having an output (OUT) forming an output terminal of the low-dropout regulator to provide an output voltage (Vout) as a function of the input voltage (Vin), a second differential amplifier (Pmos1) coupled to the first differential amplifier (Nmos1), and a switching element (Mncut1, Mncut2) coupled between first and second differential amplifier (Nmos1, Pmos1), said switching element (Mncut1, Mncut2) being operated as a function of a feedback signal (Sfb) derived from the output voltage (Vout). The second differential amplifier (Pmos1) is complementary to the first differential amplifier (Nmos1).

Abstract: In an example, a system and method are disclosed for providing a single control law that is operable to regulate both small-signal, steady-state operation, and large-signal transients of a switching regulator. The control law is based on detecting a zero-crossing of capacitor current, and projecting in advance a turning point for either ramping up or ramping down capacitor voltage at a target voltage. Certain embodiments may realize the control function in high-speed analog components, although certain other embodiments may implement the same or a similar control law in a digital controller.

Abstract: This disclosure relates to an adjustable voltage output device and an adjustment method of an operating voltage, in which the adjustable voltage output device utilizes a basic input/output system for adjusting the duty cycle of the pulse width modulation (PWM) signal outputted by the PWM signal generation unit, so as to change the operating voltage outputted by the voltage generation unit.

Abstract: A controller for a power conversion circuit that includes an inductor, a diode, and a switch. The controller includes a counter configured to determine, based on a first voltage input to the inductor, an on-time of the diode. The on-time of the diode corresponds to an amount of time that the diode is conducting a first current to a load of the power conversion circuit. A current estimation circuit configured to estimate, based on the on-time of the diode and an on-time of the switch, an output current of the power conversion circuit. The on-time of the switch corresponds to an amount of time that the switch is conducting a second current. A pulse width modulator is configured to provide, based on the estimated output current, a gate drive signal to the switch. The gate drive signal selectively transitions the switch between an on state and an off state.

Abstract: A controller used in a buck-boost converter includes a logic control circuit, a pulse width increasing circuit, a pulse width decreasing circuit, a first driving circuit and a second driving circuit. The pulse width increasing circuit generates a sum control signal based on a logic control signal generated by the logic control circuit. The pulse width increasing circuit increases the pulse width of the logic control signal by a first value to generate the pulse width of the sum control signal. The pulse width decreasing circuit generates a difference control signal based on the logic control signal. The pulse width decreasing circuit decreases the pulse width of the logic control signal by a second value to generate the pulse width of the difference control signal. The first and second driving circuit respectively generates driving signals based on the sum control signal and the difference control signal.

Abstract: In an embodiment, a voltage conversion circuit includes a first voltage conversion unit stepping up or stepping down an input DC voltage and a second voltage conversion unit stepping up or stepping down an input DC voltage. A switcher is configured to switch between using both the first and second conversion units or just one of the first and second conversion units. The switcher can optionally be controlled according to an input voltage level such that both the first and second voltage conversion units can be used for a voltage step-up or voltage step-down operation or just one of the first and second voltage conversion units can be used.