Abstract: A battery system comprising positive and negative charge-discharge terminals, first and second batteries, first and second unidirectional switches, and a bridging switch. The first battery and the first unidirectional switch are connected in series across the charge-discharge terminals such that the first unidirectional switch provides a conductive path from the positive charge-discharge terminal to a positive terminal of the first battery. The second battery and the second unidirectional switch are connected in series across the charge-discharge terminals such that the second unidirectional switch provides a conductive path from the negative terminal of the second battery to the negative charge-discharge terminal. The batteries and the bridging switch are connected in series across the charge-discharge terminals, with the bridging switch being located between the positive terminal of the first battery and the negative terminal of the second battery.

Abstract: A system for charging a battery carried by a vehicle may include a charging box for coupling to a vehicle chassis and including interface electrical contacts electrically coupled to the battery. The system may also include a charge coupler including coupler electrical contacts for electrically coupling to the interface electrical contacts from under the vehicle and configured to be coupled to an electrical power supply. The charging box may include an interface activation surface, and the charge coupler may include a housing for enclosing the coupler electrical contacts and including a base for supporting the coupler electrical contacts, a coupler activation surface opposite the base, an opening, and a door configured to open the opening to expose the coupler electrical contacts as the interface activation surface contacts the coupler activation surface and moves the coupler activation surface toward the base.

Abstract: The present invention provides a battery control system (10) including a storage unit (11) that stores a lower limit of an SOH secured on a target date in a plurality of battery systems, a deterioration rate calculation unit (12) that calculates a deterioration rate indicated by a reduced amount of the SOH per unit cumulative charge amount [Wh] or unit cumulative discharge amount [Wh] for each battery system, an SOH specifying unit (13) that specifies the SOH at a reference timing in each of the battery systems, a state calculation unit (14) that calculates a cumulative charge amount or a cumulative discharge amount that is available from the reference timing to the target date under a condition that the SOH on the target date reaches the lower limit of the SOH, based on the target date, the lower limit of the SOH, the deterioration rate, and the SOH at the reference timing, for each battery system, a priority determination unit (15) that determines a priority of charging/discharging for the plurality of batt

Abstract: A removable battery to provide motive power for an aircraft includes a battery frame and removable, interchangeable battery modules. Each of the battery modules defines module common space through which liquid heat transfer fluid flows during charging of the battery when the battery is removed from the aircraft and through which air as a heat transfer fluid flows during discharge of the battery, as during flight. The module common space also defines a combustion conduit to convey heated air and products of combustion safely outside the battery in the event of a cell fire during flight. The removable battery frame is a structural component of the aircraft.

Abstract: A system and method for digital management and control of power conversion from battery cells. The system utilizes a power management and conversion module that uses a CPU to maintain a high power conversion efficiency over a wide range of loads and to manage charge and discharge operation of the battery cells. The power management and conversion module includes the CPU, a current sense unit, a charge/discharge unit, a DC-to-DC conversion unit, a battery protection unit, a fuel gauge and an internal DC regulation unit. Through intelligent power conversion and charge/discharge operations, a given battery type is given the ability to emulate other battery types by conversion of the output voltage of the battery and adaptation of the charging scheme to suit the battery.

Abstract: An intelligent control system, an emergency starting power supply, and an intelligent battery clip are provided. The intelligent control system a microcontroller unit (MCU), a load-detection module, a switch-control module, an emergency starting power supply, a load, and a power-supply output port. The power-supply output port is electrically coupled with the load. The switch-control module includes a first terminal coupled with an internal battery pack of the emergency starting power supply, a second terminal electrically coupled with the load via the power-supply output port, and a control terminal configured to receive a control signal from the MCU. The load-detection module is configured to detect a state of the load and includes a non-isolated member. The MCU is configured to control, according to the state of the load, the switch-control module to be in a switched-on state or a switched-off state.

Abstract: A method of operating a static transfer switch is provided. The method includes monitoring a voltage waveform for each phase of first and second power sources, and calculating flux for each phase of the power sources. The method also includes determining (i) a first flux difference between the respective flux of the first phases of the first and second power sources, (ii) a second flux difference between the respective flux of the second phases of the first and second power sources, and (iii) a third flux difference between the respective flux of the third phases of the first and second power sources. The method further includes turning off a third solid-state switch to disconnect the third phase of the first power source from a load, in response to the controller determining that the third flux difference is greater the first and second flux differences.

Abstract: A power system includes first and second power supplies, and a control circuit. The control circuit is configured to control the first power supply to regulate its output voltage at a first value, enable the second power supply, increase the output voltage of the first power supply to a second value in response to the second power supply being enabled, increase an output voltage of the second power supply to a third value, and decrease an output current of the first power supply and increase an output current of the second power supply to transition between electrically powering the load with the first power supply and electrically powering the load with the second power supply. Other example power system and methods for controlling a power transition between power supplies are also disclosed.

Abstract: A method and system for contraband detection is provided that allows for the determining whether devices are authorized to receive power from an outlet. A power adapter and/or an outlet authenticate a device when it is connected to the outlet through the power adapter. On the basis of this authentication, a determination is made whether the devices are to receive power from the outlet. If the device is authorized, the outlet is activated, transitioning from inactive state (where no power is relayed through the outlet) to an active state (where power is relayed through the outlet).

Abstract: A wireless power reception device and a wireless communication method thereby are provided. The wireless communication method by the wireless power reception device may comprise the steps of: receiving a wireless power signal from a wireless power transmission device; measuring the strength of the wireless power signal; modulating the amplitude of the wireless power signal according to the measured strength of the wireless power signal; and performing communication with the wireless power transmission device by using the signal having the amplitude modulated.

Abstract: A resonator for use in a wireless power transfer system is provided. The resonator includes a core including a front surface, a back surface, and an annular sidewall extending between the front surface and the back surface, wherein an annular groove is defined in the front surface and surrounds a post, and wherein a cavity is defined in the back surface, the post and the cavity aligned with a longitudinal axis of the core. The resonator further includes a coil element disposed within the annular groove.

Abstract: Disclosed in a wireless power transmission apparatus based on cavity-resonance including a transmission cavity leaking electromagnetic waves to a reception cavity through cavity-resonance with the reception cavity, and a nonlinear feedback circuit formed on a feedback path including the transmission cavity and configured to adaptively control an operating frequency in response to a change in a system resonance frequency according to the cavity-resonance.

Abstract: A wireless transmission system includes a transmitter antenna, a sensor, a demodulation circuit, and a transmitter controller. The sensor is configured to detect electrical information superimposed on an AC wireless signal. The demodulation circuit is configured to receive the electrical information from the at least one sensor, apply automatic bias control and gain control to generate modified electrical information, detect a change in the modified electrical information and determine if the change in the modified electrical information meets or exceeds one of a rise threshold or a fall threshold. If the change exceeds one of the rise threshold or the fall threshold, an alert is generated. Alerts are decoded into the electrical information.

Abstract: Various examples are provided for wireless power transfer to implants. In one example, a system includes a radio frequency (RF) power source and a transmitter (TX) array comprising an excitation coil and resonant coils distributed about the excitation coil. The TX array can transfer power from the RF power source to a biomedical implant inserted below a skin surface of a subject when the TX array is positioned on the skin surface adjacent to the biomedical implant. A receiver (RX) coil of the biomedical implant can inductively couple with the TX array for the power transfer. The resonant coils can allow power transfer when the RX coil is not aligned with the excitation coil.

Abstract: A wireless transmission system includes a transmitter antenna, a sensor, a demodulation circuit, and a transmitter controller. The sensor is configured to detect electrical information associated with AC wireless signals, the electrical information including, at least, a voltage of the AC wireless signals. The demodulation circuit is configured to receive the electrical information from the at least one sensor, detect a change in the electrical information, determine if the change in the electrical information meets or exceeds one of a rise threshold or a fall threshold, if the change exceeds one of the rise threshold or the fall threshold, generate an alert, and output a plurality of data alerts. The transmitter controller is configured to receive the plurality of data alerts from the demodulation circuit and decode the plurality of data alerts into the wireless data signals.

Abstract: A wireless power transfer system for wirelessly powering a conveyance apparatus of a first conveyance system and a conveyance apparatus of a second conveyance system including: a wireless electrical power transceiver located along a surface of the conveyance apparatus of the first conveyance system, a wireless electrical power transceiver located along a surface of the conveyance apparatus of the second conveyance system, the surface of the conveyance apparatus of the second conveyance system being opposite of the surface of the conveyance apparatus of the first conveyance system, wherein the wireless electrical power transceiver of the first conveyance system is configured to wirelessly transfer electrical power to the wireless electrical power transceiver of the second conveyance system when the wireless electrical power transceiver of the first conveyance system and the wireless electrical power transceiver of the second conveyance system are located proximate to one another.

Abstract: A modular wireless power transfer system includes a first wireless transmission system and a wireless repeater system. The first wireless transmission system is configured to receive input power from an input power source, generate AC wireless signals, and couple with the wireless repeater system. A magnetic sensor system in the first wireless transmission system senses a magnet of specific strength in a specific location on the wireless repeater system. Based on the presence of absence of such a magnet, the first wireless transmission system allows or disallows, respectively, the transmission of the AC wireless signals to the wireless repeater system.

Abstract: A wireless charger includes a plurality of charging units for charging wirelessly chargeable devices. Each charging unit includes one or more transmit coils for producing a wireless charging signal. Each charging unit also includes a driver circuit for driving the one or more transmit coils. The driver circuit is switchable according to a charging PWM duty cycle of that charging unit. Each charging unit is operable to perform a Q factor measurement by injecting excitation energy into the one or more transmit coils of that charging unit to produce a free resonance signal, and measuring a decay rate of the free resonance signal. Each charging unit is operable to alter its charging PWM duty cycle during a time window in which another charging unit of the wireless charger is performing a Q factor measurement.

Abstract: An electric machine stator includes a soft magnetic yoke having a cylindrical yoke body extending along a central axis, with an outer surface and an inner periphery defining a central opening about the central axis, and a plurality of soft magnetic stator teeth. Each stator tooth defines a first set of air pockets, and a second set of air pockets. An electric machine rotor and permanent magnet material with air pockets are also provided.

Abstract: A motor includes a rotor rotatable about a center axis that extends vertically, a stator opposing the rotor in a radial direction, and a base portion opposing a lower surface of the stator in an axial direction. The base portion includes a lower lid portion extending in a direction orthogonal or substantially orthogonal to the center axis, a protruding portion protruding in the axial direction from an upper surface at a center of the lower lid portion, and a stator holding portion adjacent to the protruding portion in the axial direction and contactable with an inner circumferential surface of the stator. The protruding portion includes a first ventilation portion opening downward at the center of the lower lid portion and a second ventilation portion to cause the protruding portion to communicate with the first ventilation portion.

Abstract: A rotor of a rotary electric machine includes a first magnet and a fourth magnet whose magnetic fields are oriented in radial directions of a stator, and a second magnet and a third magnet whose magnetic fields are oriented in circumferential directions of the stator. In the stator, slots are formed between adjacent ones of teeth portions. An electromagnetic coil is provided in the slots. A distal end on an inner circumferential side of the electromagnetic coil is offset from an inner circumferential side end part of a base portion, which is a part of the teeth portion, toward a yoke portion.

Abstract: A first magnet, a second magnet, a fourth magnet, and a third magnet are retained on a rotor of a rotary electric machine in this order alongside one another in a circumferential direction. Magnetic fields of the first magnet and the fourth magnet are oriented in radial directions of a stator. Magnetic fields of the second magnet and the third magnet are oriented in circumferential directions of the stator. When the rotor is viewed in plan from above or below, a ratio of a total surface area of the first magnet and the fourth magnet to a total surface area of the second magnet and the third magnet is S14:S23=1:0.2 to 1:1.

Abstract: Provided is a motor capable of suppressing reduction of the torque of the motor even if the amount of use of the permanent magnets embedded in the rotor core is reduced. A motor includes a rotor with permanent magnets embedded in a rotor core, and a stator positioned on an outer circumference of the rotor. The rotor includes magnetic poles formed around a rotation axis of the rotor, the magnetic poles having the permanent magnets arranged therein. The permanent magnets in adjacent magnetic poles are arranged such that positions of a north pole and a south pole of the permanent magnet in one magnetic pole are inverted from those of the permanent magnet in a magnetic pole adjacent to the one magnetic pole. The permanent magnets each have a residual magnetization that decreases as it moves from the north pole toward the south pole.

Abstract: A rotor structure includes a rotor body and a plurality of magnets. The rotor body has a plurality of surrounding magnet-setting areas, and each magnet setting area has a first magnet slot and a second magnet slot symmetrically arranged to a centripetal axis. A first outer end of the first magnet slot and a second outer end of the second magnet slot are close to the centripetal axis and rotor's outer edge. A first outer end of the first magnet slot and a second outer end of the second magnet slot are distant to the centripetal axis and rotor's outer edge. The outer edge has a plurality of notches intersected by the corresponding centripetal axes. The magnets are respectively fixed to the first magnet slots and the second magnet slots of the magnet-setting areas.

Abstract: A stator of an electric motor having a stator core with a plurality of salient stator poles, an insulating cap, a stator winding consisting of a winding wire, and an interconnection unit with a plurality of winding-wire receptacles having an inside, wherein the winding wire is surrounded by a material constituting the winding-wire receptacle and connected and welded thereto on the inside. The stator is of an electric motor which is of a very high quality and precision so that high-current applications are possible. Without any major adjustments, the stator is combinable with different winding connections and is flexibly adaptable to the rest of the motor and possibly to the electronics design. The manufacturing method is capable of being flexibly adapted to different wire diameters.

Abstract: To reduce the time for producing slot insulators, a method for producing slot insulators for winding slots of a component of an electrical machine, includes supplying a strip of insulating material, cutting off an insulator strip portion from the strip, molding the insulator strip portion for adjustment to the mold of the winding slot, and inserting the molded insulator strip portion into the winding slot, wherein at least the molding and inserting steps are carried out in parallel for at least two insulator strip portions to be inserted into different winding slots. Moreover, a device for carrying out the method is described.

Abstract: A rotor, in particular of an electrical machine, has a base body and at least one metallic end plate which is mounted on the base body. The base body and the at least one end plate have a continuous layer which is injection molded.

Abstract: Embodiments of the present disclosure relate to a wiring apparatus for a motor and a corresponding motor. The wiring apparatus comprises an annular member and a conductor. The annular member has a first side adjacent to the motor and a second side opposite to the first side. The conductor is embedded in the annular member and comprises a plurality of joints coupled to each other via a conductive bar. The annular member comprises a first group of holes and a second group of holes. The group of holes each extend from the first side to the plurality of joints and the second group of holes arranged opposite to the first set of holes and each extends from the second side to the plurality of joints. The wiring apparatus according to embodiments of the present disclosure has a simple and compact structure, which greatly improves the efficiency of wiring.

Abstract: A drive assembly having an electric motor, having a stator housing, a stator accommodated therein and having at least one winding, a stator insulation which has a lower part and an upper part, wherein the lower part rests against at least one bearing surface in the stator housing, terminal contacts for the winding, wherein the terminal contacts are held in a contact carrier, which is provided on the lower part of the stator insulation, and a printed circuit board, which rests on at least one supporting surface in the stator housing, wherein the terminal contacts are in contact with associated conductor tracks of the printed circuit board.

Abstract: The invention is a motor/generator that includes a motor/generator housing that encloses a rotor assembly, which rotates a shaft, and a stator assembly that remains stationary, and where the motor/generator is inside a vacuum chamber, which, during normal operation, is evacuated of gas and operates at a lower air pressure than atomospheric air pressure, and a cylindrical vacuum barrier between the rotor assembly and the stator assembly that together with the motor generator housing partitions the motor/generator into an interior rotor volume and an exterior stator volume, enabling the rotor volume and stator volume to operate at different atmospheric pressures.

Abstract: This disclosure relates to an axial magnetic bearing for a centrifugal refrigerant compressor, and a corresponding system and method. A centrifugal refrigerant compressor system according to an exemplary aspect of the present disclosure includes, among other things, an impeller connected to a shaft, and a magnetic bearing system supporting the shaft. The magnetic bearing system includes an axial magnetic bearing, which itself includes a first permanent magnet configured to generate a first bias flux, a second permanent magnet axially spaced-apart from the first permanent magnet and configured to generate a second bias flux, and an electromagnet. The electromagnet includes a coil arranged radially outward of the first and second permanent magnets, and the electromagnet is configured to selectively generate either a first control flux or a second control flux to apply a force to the shaft in a first axial direction or second axial direction opposite the first axial direction, respectively.

Abstract: An electric motor is provided, comprising: a first magnetic component, a second magnetic component, and a circuit configured to electromagnetically activate at least one of the first magnetic component and the second magnetic component. The electromagnetic activation causes a change in a gap between the first magnetic component and the second magnetic component, the change in the gap resulting in rotation of at least one of the first magnetic component and the second magnetic component.

Abstract: The present disclosure relates to aerosol delivery devices. The aerosol delivery devices may include an atomizer, a reservoir configured to contain an aerosol precursor composition and an electrical circuit coupled to the atomizer. The electrical circuit may include an electrical generator assembly including a moveable input member and an electrical generator configured to produce an electrical current from movement of the moveable input member. The electrical circuit may be configured to direct the electrical current to the atomizer to produce an aerosol from the aerosol precursor composition. A related aerosol production method is also provided.

Abstract: A method and apparatus for a rotor assembly. The rotor assembly includes a rotor core having a rotatable shaft and defining at least one rotor post, a winding wound around the post that defines an end turn, and at least one coolant conduit defined in part by an end support and in a thermally conductive relationship with a portion of the winding.

Abstract: A control device for controlling an electric motor of an electrical device may include a flat plate and a power electronics. The plate may extend in a plate plane. The power electronics may include a plurality of electronic components arranged and interconnected on the plate. The power electronics may have at least one electronic power component that produces waste heat during operation. The at least one electronic power component may be arranged such that a body of the at least one electronic power component penetrates the plate plane. A plurality of power connections, via which the at least one electronic power component may be interconnected to the plurality of electronic components, may be arranged at an edge of the plate.

Abstract: An earthing brush assembly including an earthing brush and a brush mounting plate configured to radially and axially retain the brush, the brush having a support and a plurality of conductive individual fibres mounted in the support, the mounting plate providing a radial main body axially delimited by a first front face and by a second front face, and a plurality of tongues for axially and radially retaining the brush, the tongues being circumferentially distributed around the main body of the mounting plate and extending axially from the second front face of the main body. The brush mounting plate includes at least three mounting segments extending radially outwards from an outer surface of the main body, the mounting segments being distributed circumferentially around the main body of the mounting plate, each one of the segments locally surrounding the support of the earthing brush while remaining radially separated from the support.

Abstract: A manufacturing method of a rotor for an electric motor is disclosed herein. The rotor may include a rotor core having a through hole that extends along an axial direction of the rotor; a magnet inserted in the through hole; and a sheet disposed between an inner surface of the through hole and the magnet. The method may include inserting the sheet into the through hole such that the sheet extends through the through hole; and inserting the magnet into the through hole while the sheet is pulled at axial ends of the sheet in opposite directions to apply tension to the sheet and press the sheet against the inner surface.

Abstract: A coil insertion guide device includes a positioning jig that positions a stator core; and a guide member that is provided in the positioning jig so as to be able to contact an end face of the stator core in an axial direction. A coil inserted into the slots along the radial direction of the stator core is guided by the guide members. The guide member includes a guide groove. The guide groove includes, on a side close to the end face of the stator core, a cuff support groove that houses and supports a cuff of one of the insulating members that protrudes from the end face of the stator core, and on a side far from the end face, a coil guide groove that protrudes toward an inside of the slot more than the cuff support groove and contacts the coil to guide movement of the coil.

Abstract: A method for producing a wire coil. Multiple windings of a ply of the wire coil including an insulated wire are wound onto a coil core of the wire core starting from a first winding up to a last winding. The last winding is hooked in an electrically insulating deflection hook of the wire coil which is fixed with respect to the coil core and the wire is deflected by the deflection hook.

Abstract: A system for assembling a generator, preferably a permanently excited generator of a wind turbine, comprising a rotor and a stator. A vertical assembly device connectable to the rotor and the stator is proposed, for guiding the rotor in parallel and coaxially aligned to the stator during assembly, the vertical assembly device comprising a first assembly element being connectable to the rotor, a second assembly element being connectable to the stator, and guiding means for guiding the first assembly element coaxially aligned to the second assembly element.

Abstract: A motor includes a rotor assembly and a stator assembly that accommodates the rotor assembly. The stator assembly includes a stator core including tooth portions corresponding to first to third phase currents, respectively, and a coil wound around the tooth portions and defining a Y connection of the first to third phase currents, a neutral point terminal defining a neutral point of the Y connection, and power terminals configured to communicate each phase current with the Y connection. The coil includes a primary winding and a secondary winding that are wound around each of the tooth portions, that are electrically connected parallel to each other, and that are connected to each of the power terminals.

Abstract: A vibration module is provided, having a main axis passing through the center of the vibration module, including a fixed part and a first vibration part. The first vibration part is disposed within the fixed part. The first vibration part includes a first moving member and a first driving assembly. The first driving assembly drives the first moving member to move relative to the fixed part.

Abstract: Disclosed is a machine having a moving member. The moving member including a cold plate having a plurality of slots through the cold plate. The moving member also including a plurality of ferromagnetic cores coupled to the cold plate, each of the plurality of ferromagnetic cores protruding through a respective one of the plurality of slots, creating gaps between the plurality of ferromagnetic cores. The moving member also including a plurality of armature windings coupled to the cold plate, the plurality of armature windings occupying the gaps between the plurality of ferromagnetic cores.

Abstract: A coil assembly includes coil units connected to a coil base. Each coil unit includes top, intermediate and bottom coil modules, each of which has spaced-apart first and second interaction sides, and two non-interaction sides connected to the first and second interaction sides to form an accommodating space. The first interaction sides of the intermediate and bottom coil modules are juxtaposed with each other in the accommodating space of the top coil module. The second interaction sides of the top and intermediate coil modules are juxtaposed with each other in the accommodating space of the bottom coil module. An ironless motor includes a magnetic rail assembly and the aforesaid coil assembly.

Abstract: A VCM is disclosed, the VCM including a rotor including a bobbin arranged at an upper surface of a base formed with an opening, and a driving coil wound on the bobbin, a stator including a driving magnet opposite to the driving coil, and a yoke secured by the driving magnet at an inner surface of a lateral plate, and a tilting unit including a tilt magnet arranged at an outer surface of the lateral plate, a housing fixing the tilt magnet, and a tilt coil unit opposite to the tilt magnet.

Abstract: A thermomagnetic apparatus for electric power production, comprising: a hollow toric vessel (30) delimited by a wall (31) having an outer toric surface (31a) having a toroidal direction, wherein the toric wall (31) encloses a volume containing a ferrofluid which comprises magnetic nanoparticles dispersed or suspended in a fluid carrier; a plurality of hydraulic conduits (36-39) in thermal contact with the outer toric surface (31a); a magnetic field source (62) coupled to the outer toric surface (62) and an extraction coil (65) which comprises a plurality of turns (65?) of electrical conductor wire arranged on the outer toric surface (31a).

Abstract: An assembly for generating electricity includes a circular track configured to rotate about a first axis of rotation, the circular track comprising a first magnet having a face that is at an angle with respect to the first axis of rotation, a second magnet positioned at a center of the circular track, wherein a face of the second magnet is an opposite polarity to the face of the first magnet such that the second magnet repels the first magnet to rotate the circular track, and a device for converting rotational motion from the circular track into electricity.

Abstract: An example of a power supply system includes a switching voltage regulator comprising at least one switch configured to conduct an input current to generate an output voltage responsive to a switching signal and based on an input voltage. The system also includes a current regulator configured to generate a current sample voltage based on an amplitude of the input current relative to a reference current defining a maximum average amplitude setpoint of the input current to set a switching time defining a switching period of the at least one switch. The system also includes a switch controller configured to provide the switching signal to control the at least one switch based on an amplitude of the output voltage relative to a reference voltage and based on the switching time.

Abstract: This disclosure includes systems, methods, and techniques for controlling a semiconductor device of a power converter. For example, a circuit includes first control circuitry configured to receive an indication of a first voltage which represents a voltage output from a power source to the power converter. Additionally, the first control circuitry is configured to output a control signal to second control circuitry in order to control, based on the first voltage and the second voltage, the semiconductor device so that a second voltage is lower than the first voltage, wherein the second voltage represents a voltage output from the power converter to a load.

Abstract: The invention relates to a system for combining multiple power sources into a single in-phase AC current and related methods. According to an illustrative embodiment of the present disclosure, multiple out of phase AC power sources are provided, individually converted into DC currents, and combined in parallel to create a single DC current. The single DC current is then converted to an AC current, leaving a single in-phase AC current.