Abstract: Techniques effectively prevent an overcurrent from occurring in a system comprising assembled batteries connected in parallel to a power supply line, when a given assembled battery is connected to the power supply line. Multiple battery units are each configured such that they can be connected to a power supply line. Each battery unit includes a battery cell group configured including multiple battery cells, a switching unit arranged between the power supply line and the battery cell group so as to control a current that flows between the power supply line and the battery cell group, and a control unit that controls the switching unit.

Abstract: A method is provided comprising: detecting an electrical connection between a first device having a first battery and a second device having a second battery; receiving an indication of a residual power of the second battery; displaying, by the first device, a power sharing interface based on the indication of the residual power of the second battery; detecting an input to the interface specifying a threshold amount of power; transmitting power from the first battery to the second device until the threshold amount of power is transmitted.

Abstract: There are provided methods, devices, and systems relating to discharging thyristor-switched capacitors. For example, there is provided a method for discharging the capacitors of a thyristor-switched capacitor (TSC) device coupled to a transmission line. The method can include determining whether an angle of a voltage on the transmission line is within one of a first threshold range and a second threshold range. Further, the method can include discharging the capacitors, when the angle is within the first threshold range, by operating the TSC device in a first discharging mode. Furthermore, the method can include discharging the capacitors, when the angle is within the second threshold range, by operating the TSC device in a second discharging mode distinct from the first discharging mode.

Abstract: An electronic apparatus and a charging/discharging management method thereof are provided. The method entails disabling a charging/discharging path of a battery provided by the electronic apparatus and driving the electronic apparatus to enter a sleep mode according to a sleep mode control command, so as to ensure that the battery cannot supply power to the electronic apparatus through the charging/discharging path.

Abstract: The disclosure relates to a battery exercising device configured to discharge and charge a rechargeable battery, such as a lead-acid battery, after a set amount of time has elapsed. The battery exercising device is configured to receive electrical power from a power source and periodically transfer this power into a battery connected to the battery exercising device. After a period has elapsed, for example two weeks, the device applies a discharging load to the connected battery to drain the battery to a predetermined discharge level. Thereafter, the device charges the connected battery to a predetermined charge level. Once charged to the predetermined charge level, the device again waits the set period of time and repeats the discharge/recharge sequence.

Abstract: A direct current (DC) power source includes a rechargeable battery and a battery charging circuit, and supplies an output voltage within a specified output voltage range to at least one output port. In one embodiment, the power source determines whether an input voltage is present at an input port, where the input voltage is usable to produce a battery charging voltage during normal operation of the charging circuit. The power source also determines whether at least one load device is coupled to the output port(s). When the input voltage is present at the input port and at least one load device is coupled to the output port(s), the power source electronically decouples the rechargeable battery from the charging circuit, electronically adjusts a voltage at an output of the charging circuit so as to be within the specified output voltage range, and provides the adjusted voltage to the output port(s).

Abstract: A wireless power reception device includes a first resonant circuit having a first resonant frequency; a second resonant circuit connected in parallel with the first resonant circuit and having a second resonant frequency; and a rectifier configured to receive power received wirelessly by either one or both of the first resonant circuit and the second resonant circuit to output a charging current.

Abstract: A wearable charging apparatus configured for charging of a wearable device while the wearable device is in an operative position, such as on the wrist of the user the wearable charging apparatus includes a front housing portion, a rear charging portion, a coupling member and a charge system. The wearable device is positionable between the front housing portion and the rear charging portion. The front portion has a battery and the rear charging portion has a wearable charge coil that is placed in operable position relative to the wearable device and configured to electrically communicate with a coil within the body of the wearable device and coupled to a wearable battery therewith, to, in turn, transfer power from the battery within the cavity to the wearable battery.

Abstract: A number of variations may include a phone charger assembly that may include a housing assembly that may include a retainer body, a housing, a housing liner, a vent, and trim which may be constructed and arranged to house a cell phone. The housing may be dimensioned to store a multitude of cellphones in a vertical position. The phone charger assembly may further include a pawl assembly that may include a pawl ratchet, a plurality of screws, a pawl, and a release wherein the pawl assembly is constructed and arranged to raise and lower the housing within the phone charge assembly. Additionally, the phone charger assembly may include a gear rail assembly which may include at least one gear rail and at least one dampener. The gear rail assembly and pawl assembly may be constructed and arranged to raise and lower the housing within the phone charge assembly.

Abstract: An in-vehicle charging apparatus (100) has: a charge control ECU (10), which operates with power supplied from a low-voltage battery (16), and which controls charging; an S2 switch, which is on/off controlled by means of the charge control ECU (10), and which reduces a voltage of the pulse signals when the switch is in the on-state; and a switch (SW1), which is controlled to be in an on-state by means of units other than the charge control ECU (10), and which reduces the voltage of the pulse signals when the switch is in the on-state. In the cases where the switch (SW1) is turned on, power from a charging cable (200) is supplied to the low-voltage battery (16) or the charge control ECU (10).

Abstract: A mobile solar array is provided which can be reconfigured between an operational (i.e. flat) configuration, and a retracted (i.e. folded) configuration. This is a two-step process. First, the structure that supports the solar array in its operation configuration on a docking pad is collapsed. This lowers the solar array toward the docking pad. Next, the solar array, which includes three sections of photovoltaic modules is folded lengthwise. Specifically, side sections of the solar array are folded out-of-plane from the center section. This places the solar array in its retracted configuration.

Abstract: A method and controller for controlling scheduled charging of an electric vehicle. A charging start time is scheduled in the electric vehicle. The electric vehicle is connected to a charger by means of a control line. A standby signal is transfers on the control line, and the charger enters into a charging standby mode. A charging control switch of the electric vehicle is then turned on (and subsequently off) for a first time at every first period so that the charger stays in the charging standby mode. At the scheduled charging start time, the charging control switch is turned on and left on so that the charger starts charging the electric vehicle.

Abstract: A power system 10 is provided with a power conversion device 110 connected to an input power supply 200, a battery 120 and a load 130 connected in parallel with each other to the output side of the power conversion device 110, and a control device 140 controlling charging/discharging of the battery 120, wherein the control device 140 receives output power of the power conversion device 110, determines, based on the received output power, charge or discharge power of the battery 120 such that the output power becomes close to a first value, and charges or discharges the battery 120 based on the determined charge or discharge power.

Abstract: Provided is a backup power system for providing power to a load when a primary lighting system is disabled. The backup power system includes an energy source configured to supply an amount of power to the backup power system, and a charger connectable to the energy source and a power source of the primary lighting system. The backup power system additionally includes a controller configured to measure a current value of the primary lighting system and determine a backup current value corresponding to an amount of backup current that is a fractional amount of the determined current value. The backup power system include a current source configured to provide the determined backup current.

Abstract: A system includes a first power source and a variable neutral impedance circuit configured to vary a neutral impedance of the first power source based on presence and absence of a parallel coupling of the first power source with a second power source. The variable neutral impedance circuit may be configured to reduce a neutral current of the first power source when the first power source is operating in parallel with the second power source. The variable neutral impedance circuit may include an impedance coupled in series with the first power source, a bypass switch configured to bypass the impedance and a control circuit configured to control the bypass switch. The impedance may include a resistor.

Abstract: An adaptive near field electromagnetic coupler for coupling electromagnetic power to a plane metallic trace (inlay) independently of the inlay geometry and/or orientation without external control algorithms. This is achieved by employing a microstructure of phase altering elements suitable for creating a constant phase field distribution along a top surface of the coupler structure. This is advantageously applicable to printing devices having a function of encoding RFID layers printed on a medium. In view of the provided flexibility, the coupler arrangement can be employed in a variety of printers of different mechanical design.

Abstract: The embodiments described herein include a transmitter that transmits a power transmission signal (e.g., radio frequency (RF) signal waves) to create a three-dimensional pocket of energy. At least one receiver can be connected to or integrated into electronic devices and receive power from the pocket of energy. A wireless power network may include a plurality of wireless power transmitters each with an embedded wireless power transmitter manager, including a wireless power manager application. The wireless power network may include a plurality of client devices with wireless power receivers. Wireless power receivers may include a power receiver application configured to communicate with the wireless power manager application. The wireless power manager application may include a device database where information about the wireless power network may be stored.

Abstract: A power transmission device includes a power transmission unit transmitting electric power in a contactless manner to a power reception unit provided outside; and a power transmission-side shield formed in a hollow shape and provided so as to surround the power transmission unit. An electromagnetic wave can pass through a region on a side opposite to a region where the power reception unit is located across the power transmission-side shield. The power transmission-side shield is provided with a shield member on a side opposite to the power transmission unit across the power transmission-side shield.

Abstract: A current sensing system and method for wireless energy transfer may include a printed circuit board, wherein the printed circuit board may include at least a first layer, a second layer, and a third layer. A loop of conductive material may be included, wherein the loop of conductive material may include a diameter D3 on the second layer. A coil of conductive material may be included, wherein the coil of conductive material may have at least 2 turns, wherein a majority of the coil of conductive material may occupy the first layer and the third layer with an outer diameter D1 and an inner diameter D2, connected through each of the first, second, and third layers. The loop of conductive material may be coupled to the coil of conductive material.

Abstract: One aspect of the disclosure provides an apparatus for receiving wireless power. The apparatus includes a power receiving circuit and a processing circuit. The power receiving circuit is configured to couple to a magnetic field generated by a power transmitter during an alignment check. The processing circuit is configured to identify a first operation point of the power receiving circuit and a second operation point of the power transmitter based on the magnetic field during the alignment check. The processing circuit is further configured to adjust a duty cycle of an active component of the power receiving circuit based at least in part on one of the identified first operation point and second operation point.

Abstract: There is described a synchronous reluctance machine having a plurality of poles and comprising a stator with a plurality of spaced slots and a rotor. The rotor has one direct axis and one quadrature axis for each pole and comprises a plurality of flux barriers, each extending to a circumference thereof at least one barrier point. Successive angular separations between barrier points around the circumference of the rotor increase or decrease when moving around half a pole pitch from an initial axis to an adjacent finishing axis, the initial axis being one of a direct axis or a quadrature axis and the finishing axis being the other of a direct axis and a quadrature axis. The increase or decrease in size may be governed by a systematic progressive series.

Abstract: A hybrid drive module including: a torque converter with a cover, an impeller and a turbine; a rotor for an electric motor; a hub non-rotatably connected to the rotor and the cover and including a circumferential surface and a plurality of protrusions extending radially outward from the circumferential surface; and an end plate disposed between the plurality of protrusions and the rotor and engaged with the end plate and the rotor. The plurality of protrusions is formed of a material forming the hub and restrains the end plate and the rotor, with respect to the hub, in an axial direction.

Abstract: Each of busbars of a busbar unit includes a main body part that extends along a circumferential direction of the stator so that a plate thickness direction coincides with an axial direction of a stator; a projecting part that projects radially outwardly of the stator from outer periphery of the main body part; an extending part bent from the projecting parts, the extending part extending in the axial and radial direction of the stator; and a connecting part provided on a tip of the extending part, the connecting part being connectable to the winding wire ends of the coils. A position of the connecting part is specified in accordance with length of the extending part in the axial and radial directions of the stator.

Abstract: A reluctance motor has: a stator provided with drive coils to which multiphase drive currents are inputted; and a rotor provided with a plurality of salient poles which receive primary rotating force when magnetic fluxes generated in the drive coils are interlinked with the rotor, and the rotor has: inductor pole coils which are placed on magnetic paths on which spatial harmonic components superimposed on the magnetic fluxes generated in the drive coils are interlinked with the rotor side so that induced currents can be generated in the inductor pole coils due to the spatial harmonic components of the magnetic fluxes; rectifier elements which rectify the induced currents generated in the inductor pole coils; and electromagnet coils as defined herein, and the inductor pole coils and the electromagnet coils do not serve for each other's purposes but are placed on the rotor individually.

Abstract: An electric machine has grooves and windings, divided into strands, of electrical conductors. At least one strand has a number s of coils connected in series and arranged in the grooves. Each coil has sub-conductors connected in parallel and arranged in bundles. Each bundle is arranged in a groove at a bundle position relative to a deepest possible bundle position in the groove. The positions of all bundles in all coils define a number b of possible bundle positions of the strand. The bundles are interchanged between the coils such that each bundle is arranged in the grooves at least n times and at most n? times at each possible bundle position, wherein n is the integer quotient in regard to the quotient of the number s and the number b, wherein n?=n if s is divisible by b and n?=n+1 if s is not divisible by b.

Abstract: An electric motor assembly including a stator having a stator core and windings around the stator core is disclosed. The stator core has opposing ends and an outer surface extending between the opposing ends. The electric motor assembly also includes a housing having an inner surface enclosing at least a portion of the stator, and at least one fluid passage between the outer surface of the stator core and the inner surface of the housing. The fluid passage permits a coolant in the fluid passage to contact one or more portions of the outer surface of the stator core to remove heat from the stator core during operation of the electric motor assembly. Additional motor assemblies including stator and/or rotor cooling features are disclosed.

Abstract: A rotating electric machine allowing a rotor and a stator thereof to assume any of various numbers of poles and any of various numbers of slots and enabling a reduction in vibration and noise is provided. The rotating electric machine according to the present invention includes a stator having a plurality of teeth and a plurality of slots, which is configured so that the shape of the front ends of the teeth and the opening width of the slots are made to change cyclically F times along the circumferential direction (F is a natural number equal to or greater than 2).

Abstract: An electric motor includes a stator, a rotor, and weights removably attached to the rotor shell for use in balancing the rotor. The removable weights may be integrally formed with a rotor shell such that the weights and the rotor shell form a unitary, one-piece construction. The removable weights may be substantially uniformly spaced apart around an entirety of the outer perimeter of the rotor shell. In a method of making an electric motor, the stator is coupled to the rotor such that the weights are accessible for selective removal during balancing of the rotor.

Abstract: An axial air-gap motor stator and a fan thereof includes a motor stator. The motor stator includes multiple metal substrates stacked together. Each metal substrate has a port and multiple pole teeth disposed around the port. The two adjacent pole teeth on each metal substrate are disposed with a magnetic pole and the number of the pole teeth of each metal substrate is a natural number twice the number of the magnetic poles of each metal substrate. The magnetic poles of the metal substrates are arranged in a staggered manner. This avoids the problems of interference of magnetic poles and prevents the magnetic field from being affected.

Abstract: A gas turbine engine is provided, comprising a tail cone and a low-pressure spool outside the tail cone. An input shaft may be coupled to the low-pressure spool and inside the tail cone. A differential may be coupled to the input shaft and inside the tail cone. A generator may be coupled to the differential and also disposed inside the tail cone. An oil pump may be configured to pump oil through the generator to the differential. A generator assembly is also provided. The generator assembly may comprise an input shaft, a differential coupled to the input shaft, a rotating transfer tube coupled to the differential, a generator coupled to rotating transfer tube, and an oil pump configured to pump oil from the generator, through the rotating transfer tube, and into the differential.

Abstract: An enclosure for a ground ring includes an enclosure housing configured to accept a ground ring and hold the ground ring in a predetermined position around a shaft that is electrically connected to a drive shaft of an electric motor. The ground ring having a first opening for the drive shaft and the enclosure housing has a second opening for the drive shaft. The enclosure includes an attachment configured to hold the enclosure housing around the shaft to dissipate an electrical charge and to form a cavity that contains the ground ring and includes a predetermined gap between a perimeter of the second opening of the enclosure and a surface of the drive shaft.

Abstract: An electric motor is provided. The motor includes a motor frame assembly including a motor frame and a motor housing. A stator is fixed relative to the motor frame assembly. A rotor including a rotor shaft is mounted in the motor frame assembly for rotational movement relative to the motor frame assembly about an axis. A rotor jack is operable to selectively support the rotor shaft. The rotor jack is shiftably coupled relative to the motor frame assembly for movement between a support position, in which the jack is shifted into supporting contact with the rotor shaft, and a retracted position, in which the jack is spaced from the rotor shaft.

Abstract: A molding apparatus and method for fixing permanent magnets in a rotor core during production of drive motors for environmental vehicles, in which the permanent magnets, which are inserted into magnet insertion apertures of the rotor core, are aligned at identical positions with respect to the axial direction of the rotor core, thus contributing to an improvement in the performance of the drive motors.

Abstract: An electrical conductor aligning device that can, without mutual interference, easily, and in a short period of time, align a plurality of electrical conductors in an annular shape while overlapping in the peripheral direction. The coil element aligning device includes: holding sections, a slide mechanism and a cylinder mechanism. One leg of each coil element is held by the plurality of holding sections, the plurality of coil elements being aligned in an annular shape at a spacing such that there is no overlapping in the peripheral direction, and then the plurality of holding sections being moved inwards in the radial direction by the slide mechanism and the cylinder mechanism, thereby aligning the plurality of coil elements in an annular shape while overlapping in the peripheral direction.

Abstract: Certain aspects relate to topologies for an interior permanent magnet (IPM) electrical machine having increased saliency torque, increased flux-linkage, reduced magnet leakage flux, and reduced detrimental slotting effects compared to existing IPM electrical machines. The IPM electrical machine includes a rotor having a number of poles and a flux barrier formed along the edge of the rotor between poles. The flux barrier contains a magnet or set of magnets having a varying thickness, with a central thickest portion located along the d-axis of the rotor. A magnet retention structure, which may be formed integrally with the rotor or provided as a separate structure, surrounds the rotor and magnets. The rotor and magnets combine to form a smooth circular profile having no air gaps.

Abstract: In one embodiment, a latching sector motor actuator includes a housing, a permanent magnet, and a pole piece. The permanent magnet rotates relative to the housing. The pole piece has a polarity and a pair of wound wire coils, is fixedly attached to the housing, and communicates with the permanent magnet to cause the permanent magnet to rotate one of clockwise and counterclockwise, depending upon the polarity of the pole piece. In another embodiment, a failsafe sector motor actuator has a pole piece with a singularly wound wire coil and further includes an auxiliary permanent magnet. The auxiliary permanent magnet is adjustably attached to the housing to extend rotation of the permanent magnet from 80° to 120°, depending upon location and magnitude of the auxiliary permanent magnet.

Abstract: A linear power generator has a gas pressure cylinder structure which causes reciprocating motion of a piston in an axial direction by supplying a high-pressure gas alternately to a left gas chamber and a right gas chamber of a cylinder which includes an electromotive coil, and alternately applying a gas pressure in the left gas chamber and a gas pressure in the right gas chamber to the piston which includes a permanent magnet in the cylinder, and which induces power generation of the electromotive coil by way of reciprocating motion of the piston which has the permanent magnet in the axial direction. The linear power generator encourages movement of the piston by supplying a first high-pressure gas into the left gas chamber and the right gas chamber, and keeps moving the piston by supplying a second high-pressure gas for supplementing the first high-pressure gas into the left gas chamber and the right gas chamber.

Abstract: A non-traditional topology of a superconductive electric motor or generator increases the air gap flux density by reducing stray flux and concentrating lines of flux within the air gap. An electric motor or generator utilizing the invention will include three components: a rotating armature, a permanent magnet stator and a shielding sleeve. The shielding sleeve of the motor is a hollow cylinder that fits between the armature and the stator, and is configured to cool a plurality of high-temperature superconductors within it to a temperature below their critical temperatures. These superconductors are placed at an optimized position to redirect flux and promote greater efficiency.

Abstract: A semiconductor device includes a plurality of transistors, each having a gate electrode including extending portions having a length obtained by dividing the gate electrode causing interruption to switching at a desired frequency, wherein current inflow terminals of the plurality of transistors are connected to each other and current outflow terminals of the plurality of transistors are connected to each other.

Abstract: One aspect of the present disclosure can include an electronic signal processing system and method used in a control system (e.g., for hour meter functionality, intelligent start/stop functionality, etc.). The system can include a rectifier component to receive a voltage input from an operation source during use. The voltage input can indicate that an engine is running. The rectifier component to convert the voltage input to a positive voltage input. The system can also include a constant current component to receive the positive voltage input from the rectifier circuit and to control a current based on the positive voltage input. The system can also include an optical component to provide an output based on the current and to communicate the output to a microcontroller during use of the operation source. For example, electronic signal processing methods and apparatuses are also described.

Abstract: A power factor correction circuit includes an overcurrent protection circuit, and the overcurrent protection circuit detects at least one of a line input voltage, a switch current of a power factor correction circuit, and a line period peak and performs overcurrent protection operations using a detection result.

Abstract: A synchronous rectifier applied to a power converter includes a gate coupling effect suppressing unit. The gate coupling effect suppressing unit is used for suppressing an induced voltage coupled to a gate of a metal-oxide-semiconductor transistor coupled to a secondary side of the power converter to ensure that the metal-oxide-semiconductor transistor is turned off when the power converter operates in a start-up condition and a power switch of the power converter is turned on. When the power converter operates in the start-up condition, a driving voltage of the secondary side of the power converter for driving the synchronous rectifier is not enough to drive the synchronous rectifier yet.

Abstract: Systems, apparatuses, and techniques for pulse width modulation (PWM) are described. A described system includes a circuit that contains an inductor and a transistor that controls current through the inductor based on a PWM signal to produce an output; and a controller to provide the PWM signal, which includes PWM cycles that include on-durations and off-durations. The controller can receive a first signal indicating an input voltage that is applied to the inductor, receive a second signal indicating a current through the inductor, use an on-duration parameter value to control the on-duration, determine a maximum off-duration of the off-durations corresponding to the PWM cycles occurring within a first voltage cycle, the first voltage cycle being defined between two consecutive zero-crossing events as indicated by the first signal, and adjust the on-duration parameter value for a second, subsequent voltage cycle based on the maximum off-duration to regulate the output voltage.

Abstract: A method and apparatus for detecting a critical duty cycle that maximizes an output power of a boost converter is provided. In the method and apparatus, the boost converter may be operated at or below the critical duty cycle. In the method and apparatus, a first voltage that is a function of an output voltage of a boost converter and voltage drops across a first set of parasitic resistances of the boost converter is detected. A second voltage that is a function voltage drops across a second set of parasitic resistances of the boost converter is also detected. The voltages are compared to determine the critical duty cycle and the boost converter is operated in accordance with a duty cycle that does not exceed the critical duty cycle.

Abstract: A charge pump is connected to receive a supply voltage and a clock signal and generate an output voltage. The charge pump is connected to the supply voltage through a transistor whose gate voltage is set by a regulation voltage determined by feedback from the output voltage. The current supplied to the charge pump through this transistor is mirrored in a section that generates the clock signal, where the mirrored current is used by a current controller oscillator. This allows the pump's clock frequency to linearly track the load current, improving the pump's efficiency.

Abstract: A charge pump circuit, and associated method and apparatuses, for providing a split-rail voltage supply, the circuit having a network of switches that is operable in a number of different states and a controller for operating the switches in a sequence of said states so as to generate positive and negative output voltages together spanning a voltage approximately equal to the input voltage and centered on the voltage at the common terminal.

Abstract: The charge pump circuit includes multiple boosting stages, and each stage includes following units. A first switch circuit is controlled by a first clock signal to couple a second terminal of a first capacitor to a first input terminal or a second input terminal. A third switch circuit is controlled by a second clock signal to couple a second terminal of a second capacitor to the first input terminal or the second input terminal. A second switch circuit is controlled by electric potentials on the second capacitor to couple a first terminal of the first capacitor to the first input terminal or an output terminal. The fourth switch circuit is controlled by electric potentials on the first capacitor to couple a first terminal of the second capacitor to the first input terminal or the output terminal.

Abstract: A system and method of increasing the efficiency in multi-stage power converters by providing an open loop charge pump stage which reacts in part based on information from a closed loop multi-phase buck converter stage.

Abstract: A circuit for clamping current in a charge pump is disclosed. The charge pump includes switching circuitry having a number of switching circuitry transistors. Each of first and second pairs of transistors in the circuit can provide an additional path for current from its associated one of the switching circuitry transistors during off-switching of that transistor so that a spike in current from the switching circuitry transistor is only partially transmitted through a path extending between the switching circuitry transistor and a capacitor of the charge pump.

Abstract: An electronic device is provided, which includes a user interface unit configured to receive an input of a user command, a controller configured to perform an operation according to the input user command and to control the user interface to display a screen according to the result of the operation, and a power supply configured to provide a power to the user interface and the controller, wherein the power supply includes a plurality of converters configured to supply the power to respective loads of the electronic device, and the plurality of converters output voltage values that correspond to levels of the respective loads connected thereto.