Abstract: An HMD includes first and second batteries mounted therein, and includes a plurality of power receivers that receive power from the first and second batteries by wireless transmission, a power supply manager that monitors states of the first and second batteries, a communication interface that performs wireless communication with the first and second batteries, and a plurality of limiters that limit the power received by the plurality of power receivers. A controller causes the limiters to limit power, which is supplied to a load, according to a power use state of the load in the device, and the power supply manager acquires information of remaining power storage amounts of the first and second batteries through the communication interface and displays the acquired information on a display.

Abstract: A method for detecting the presence of a receiver in an inductively coupled power transfer system having a transmitter and receiver. The method includes switching on a transmitter converter at a first frequency, measuring the inrush current and determining whether there is a receiver present. In another method, the inrush current is measured for a range of transmitter frequencies, and the variation in current is used to determine where there is a receiver present. In another method, the inrush current is measured when there is a change in voltage in the transmitter, and the variation in current is used to determine where there is a receiver present. In another method, the current supplied to the transmitter converter is measured over two transmitter frequencies, and the variation in current is used to determine where there is a receiver present.

Abstract: An antenna for wireless power transfer includes a first antenna portion and a second antenna portion. The first antenna portion includes a first antenna terminal, a second antenna terminal, at least one first inner turn, at least one first outer turn, and a first wire crossover electrically connecting the at least one first inner turn with the at least one second outer turn. The antenna further includes a second antenna portion including a third antenna terminal, a fourth antenna terminal, at least one second inner turn, at least one second outer turn, and a second wire crossover electrically connecting the at least one second inner turn with the at least one second outer turn. The second antenna terminal is in electrical connection with the third antenna terminal and the first antenna terminal and fourth antenna terminal are configured for electrical connection with a transmitter circuit.

Abstract: A smart wearable device includes a detection apparatus and a case, the detection apparatus specifically includes one set of measuring parts and a plurality of sets of light emitting parts; the one set of measuring parts and the plurality of sets of light emitting parts are inlaid into the case and arranged into a polygon, where each of the plurality of sets of light emitting parts and the one set of measuring parts each occupies one of a plurality of angles of the polygon, and a central position of the polygon is at a specified distance to each angle of the polygon. A specific embodiment of the present invention provides a smart wearable device. One set of measuring parts and a plurality of sets of light emitting parts are disposed into a case and arranged into a polygon.

Abstract: A rectenna controller connected to a rectenna that receives radio frequency power and converts the radio frequency power into direct current power, the rectenna controller controlling the direct current power received from the rectenna and supplying the controlled direct current power to a load, the rectenna controller including: an input terminal receiving the direct current power converted by the rectenna; an output terminal supplying the controlled direct current power to the load; a first switching element disposed in a current path connecting the input terminal to the output terminal; and a controller controlling the first switching element, wherein when the controller does not operate, the first switching element becomes conducting to render the current path conductive.

Abstract: According to a first aspect of the present disclosed subject matter, a system for wirelessly charging a device by a transmitter capable of receiving messages from a device, the system comprising: a configurable driver for inductively transfer power level for charging the device; a controller configured to control the driver and continuously measuring currents and voltages of the transmitter while the charging, wherein the control is tuning the power level by reconfiguring the driver with parameters selected from a group consisting of operating frequency; duty cycle; amplitude; and any combination thereof, based on the measuring indicating a power level deviation or resetting another power level based on messages.

Abstract: According to a first aspect of the present disclosed subject matter, a method for foreign object detection in a system having a relay adapted to inductively transfer power for charging a device and a transmitter having a controller configured to inductively transmit to the relay the power for charging the device, wherein the transmitter and the relay are separated by a medium, wherein the controller is capable of communicating with the device, the method comprising operations by the controller: determining power consumed by the transmitter; determining power loss on the transmitter according to continuous measurements of AC output current; obtaining coupling factor between the transmitter and the relay; determining power loss on the relay based on continuous measurements of AC output current and coupling factor; subtracting from the power consumed by the transmitter the power loss on the transmitter and power loss on the relay; obtaining from the device consumed power of the device; comparing a result of the

Abstract: According to one embodiment of the present disclosure, there is provided a capacitive coupler structure, including: power transmitters, each including a first metal plate and a second metal plate, and power receivers, each including a third metal plate and a fourth metal plate, where the first metal plate and the third metal plate form a first capacitor, the second metal plate and the fourth metal plate form a second capacitor, and each center of gravity of the first metal plate through the fourth metal plate is aligned on a single vertical line, and the first metal plate through the fourth metal plate form capacitive couplings.

Abstract: An electronic device according to an embodiment of the disclosure may include a loop antenna, a printed circuit board including a power wire and a ground wire, a first switch electrically connected between a first terminal of the loop antenna and the power wire, a second switch electrically connected between the first terminal and the ground wire, a third switch electrically connected between a second terminal of the loop antenna and the power wire, a fourth switch electrically connected between the second terminal and the ground wire, and a controller.

Abstract: Wireless power transfer systems, disclosed, include a wireless power transmission system and a wireless power receiver system. The wireless power transmission system includes a transmitter antenna configured to couple with a receiver antenna to transmit alternating current (AC) wireless signals to the receiver antenna. Antenna coupling may be inductive and may operate in conformance to a wireless power and data transfer protocol. A transmission controller drives the transmitter antenna at an operating frequency, and either the wireless power transmission system or the wireless power receiver system may damp the wireless power transmission to create a data signal containing a serial asynchronous data signal.

Abstract: A bidirectional on-board charger (BOBC) may be disposed between an electric vehicle supply equipment (EVSE) and a battery equipped in an electric vehicle to convert power while performing charging/discharging in two-way direction, supply a converted DC power to the battery to driving the electric vehicle, convert a power of the battery into an AC power in converting power with respect to the EVSE, and supply the AC power to a grid or a load. In a method and apparatus of controlling a BOBC, an operation mode of the BOBC proceeds to an optimum point by comparing battery voltage values in a charging mode and proceeds to an optimum point on the basis of an accurate battery state value through a grid connection in a discharging mode.

Abstract: According to a first aspect of the present disclosed subject matter, a dynamic calibration method in a system comprising a relay, having a coil, adapted to inductively transfer power for charging a device and a transmitter, having a coil and a controller configured to inductively transmit to the relay the power for charging the device, wherein the transmitter and the relay are separated by a medium, the method comprising: determining operating parameters selected from a group consisting of minimal and maximal operating frequency; direction of power increase relative to operating frequency; minimal and maximal duty cycle; minimal and maximal operating amplitude; and any combination thereof; wherein the operating parameters and a ping frequency are determined based on dynamic measurements of the transmitter operation and calculations executed by the controller during the calibration.

Abstract: A switching transformer includes a drive amplifier configured to output an input signal by amplifying a source signal, a primary circuit including a set of primary inductors, a primary switch, and a first primary connecting wire, the set of primary inductors being configured to receive the input signal at a first primary input/output terminal, the primary switch being configured to adjust an inductance of the set of primary inductors based on a first switching operation, and the first primary connecting wire being configured to electrically connect the first primary input/output terminal to an end of the primary switch, and a secondary circuit configured to mutually electrically couple to the first primary connecting wire and at least one primary inductor among the set of primary inductors.

Abstract: A grasp-activated power switch is integrated within a handle for a hand-held power tool. The switch has an inner channel having an outer conductive layer, and a flexible outer shell having an inner conductive layer separated from the outer conductive layer by an air gap. On its surface the outer shell has actuating and non-actuating areas. A manual grasping force when applied to the actuating area flexes the inner conductive layer across the gap and electrically couples the two layers. The closure energizes an RF transmitter, which sends a pulse to a complementary receiver. With each pulse, the receiver toggles power to a motor off or on, and when on, the motor transmits power through the inner channel. When operating the tool, an operator may grasp the non-actuating area to avoid powering the tool off or on. The inner conductive layer may consist of conductive segments separated by a resilient insulator that maintains the switch open in the absence of a grasping force.

Abstract: In described examples, a pulse width modulation (PWM) system includes an initiator and a receiver. The initiator includes an initiator counter and an initiator PWM signal generator. The initiator counter advances an initiator count in response to an initiator clock signal. The initiator PWM signal generator generates an initiator PWM signal in response to the initiator count. The receiver includes a receiver counter, a receiver PWM signal generator, and circuitry configured to reset the receiver count. The receiver counter advances a receiver count in response to a receiver clock signal. The receiver PWM signal generator generates a receiver PWM signal in response to the receiver count. The circuitry resets the receiver count in response to a synchronization signal and based on an offset.

Abstract: A wireless charger includes multiple transmitter coils, first and second drivers, and a controller. The transmitter coils are arranged close to and/or overlap with each other. The first driver is coupled with at least one of the transmitter coils to drive the transmitter coil to communicate with and/or provide power over a first channel to receiver devices. The second driver is coupled with at least another one of the transmitter coils to drive the transmitter coil to communicate with and/or provide power over a second channel to receiver devices. The controller is coupled with the first and second drivers and enables only one of the first and second drivers at a time during a first stage.

Abstract: Foreign object detection for wireless power transmitters and related systems, methods, and devices are disclosed. A controller for a wireless power transmitter includes a processing core and an analog to digital converter configured to sample at least one of a coil voltage potential and a coil current of a transmit coil. The processing core is configured to determine an expected reference Q-factor value responsive to the at least one of the sampled coil voltage potential and the sampled coil current, and compare the expected reference Q-factor value to a reference Q-factor value received from a wireless power receiver. The processing core is further configured to determine that a foreign object is detected proximate to the transmit coil responsive to a comparison of the expected Q-factor value to the reference Q-factor value received from the wireless power receiver.

Abstract: A wireless electrical energy transmission system is provided. The system comprises a wireless transmission base configured to wirelessly transmit electrical energy or data via near field magnetic coupling to a receiving antenna configured within an electronic device. The wireless electrical energy transmission system is configured with at least one transmitting antenna and a transmitting electrical circuit positioned within the transmission base. The transmission base is configured so that at least one electronic device can be wirelessly electrically charged or powered by positioning the at least one device external and adjacent to the transmission base.

Abstract: The present invention provides a system tar wireless power transmission, wherein the system is a system for wireless power transmission detecting a foreign object, including a power transmitting coil for transmitting AC power, a power receiving coil for receiving the AC power transmitted from the power transmitting coil wherein the power receiving coil is spaced apart from the power transmitting coil, and a detection circuit for detecting a foreign object located between the power transmitting coil and the power receiving coil wherein a first resistor and a first detection coil connected in series, and a second resistor and a second detection coil connected in series are connected in parallel, and wherein at least one of the first detection coil and the second detection coil is disposed between the power transmitting coil and the power receiving coil.

Abstract: A filter component such as an EMC filter and a method for using an filter component are disclosed. In an embodiment, a filter component includes a resonant circuit having an inductance and at least one capacitor that is connected in series with the inductance, wherein the resonant circuit is designed and arranged for attenuating harmonics in a longwave band.

Abstract: A heat conducting device in a vehicle whereby heat in the body or shell of the vehicle is transferred to the ground includes a control device, a heat transferring device, and a driving device. The heat transferring device is in the vehicle and is connected to the shell of the vehicle when the vehicle is flameout, the driving device is coupled to the control device and the heat transferring device, such that the heat transferring device is extended downwards from the vehicle, until the heat transferring device contacts the ground, thereby heat of the shell of the vehicle is transferred to the ground.

Abstract: Disclosed are various embodiments for exciting a guided surface waveguide probe to create a plurality of resultant fields that are substantially mode-matched to a Zenneck surface wave mode of a surface of a lossy conducting medium and embodiments for receiving energy from a Zenneck surface wave launched on the lossy conducting medium.

Abstract: A wireless charging system comprises at least one wireless power transmitter at a fixed location, at least two wireless communication beacons in proximity and at known locations relative to the wireless power transmitter, and a portable electronic device in proximity to the wireless power transmitter. The portable electronic device comprises a wireless power receiver connected to charge a battery through a tunable power electronic circuit, a wireless communication receiver, a 3-axis accelerometer, a 3-axis magnetometer, a 3-axis gyroscope, and a controller configured to determine the position and orientation of the wireless power receiver with respect to the wireless power transmitter and tune the tunable power electronic circuit based on the determined orientation.

Abstract: The invention provides a non-contact power supply system which supplies power from a power feeding coil on a ground side to a power receiving coil on a vehicle side, and provides a coil position detecting method of detecting a position of a power receiving coil. An excitation voltage and an excitation frequency for the power feeding coil are changed depending on the position of the power receiving coil relative to the power feeding coil. Then, the position of the power receiving coil is detected based on a received voltage with the power receiving coil when the power feeding coil is excited.

Abstract: The present invention pertains to a composition for preparing a medicament for preventing and/or treating a virus infection, especially a hepatitis B virus infection and/or a herpes simplex virus, and uses thereof.

Abstract: The present specification discloses a method for receiving wireless power from a wireless power transmission device on the basis of foreign object detection, the method comprising the steps of: receiving a digital ping from the wireless power transmission device; transmitting identification and configuration packets to the wireless power transmission device; transmitting a foreign substance detection state packet indicating a reference Q factor value of a wireless power reception device to the wireless power transmission device; and receiving wireless power through magnetic coupling from the wireless power transmission device, on the basis of a result of foreign substance detection using the reference Q factor value by the wireless power transmission device.

Abstract: An inductive power transmitter 2 comprising: a plurality of transmitter coils 7; a controller 8 configured to selectively energise the coils 7 in order to couple a receiver 3, the coils 7 selected being dependent on an orientation of the receiver 3, a power transfer optimisation algorithm, or a lookup table.

Abstract: A power transfer system comprises a patient transport apparatus and a power transfer device. The power transfer system provides convenience and ease of connection between a power source and the patient transport apparatus to provide power to one or more electrically powered devices on the patient transport apparatus or to provide energy for an energy storage device on the patient transport apparatus.

Abstract: A method includes configuring a hybrid converter to operate in a hybrid mode comprising four operating phases in response to an input voltage of the hybrid converter greater than a first threshold, configuring the hybrid converter to operate in a buck mode comprising two operating phases in response to the input voltage of the hybrid converter less than a second threshold, and configuring the hybrid converter to operate in a charge pump mode comprising two operating phases in response to the input voltage of the hybrid converter less than the first threshold and greater than the second threshold.

Abstract: An electronic apparatus includes: a communication unit that communicates with another electronic apparatus in a non-contacting manner; and a power supply unit that supplies power to the other electronic apparatus in the non-contacting manner. When a power-supply target electronic apparatus is detected through a first polling performed by the communication unit, the electronic apparatus notifies the power-supply target electronic apparatus of the start of foreign object detection processing. After this notification, the electronic apparatus executes the foreign object detection processing to detect the presence of a foreign object that is not a power supply target through a second polling performed for a predetermined period by the communication unit. Based on a result of the foreign object detection processing, the electronic apparatus controls power supply from the power supply unit to the power-supply target electronic apparatus.

Abstract: A wireless charging receiving device, wireless charging method and system, and terminal device are provided. The device includes a control unit, receiving coil, rectifier-filter unit, first voltage conversion unit and battery cell module. The control unit transmits a first control signal to a wireless charging transmitting device and outputs a second control signal to the first voltage conversion unit if the wireless charging transmitting device is of a model belonging to a first preset model set and an output voltage of the battery cell module is within a preset range. The receiving coil senses a first electromagnetic wave to generate a first AC. The rectifier-filter unit converts the first AC into a first DC. The first voltage conversion unit converts the first DC into a second DC under the control of the second control signal. The battery cell module is charged by the second DC.

Abstract: In accordance with some embodiments of the present invention, an ion cooling engine (ICE) controlled by a transmitting or receiving device cools a transmit or receive coil and possibly other parts of a wireless power transmitter or receiver system. In some embodiments, the ICE includes a low-voltage circuit controlled by the transmitting device and coupled to a high voltage circuit that generates the airflow. Other features are also provided.

Abstract: An out-of-plane tunneling magnetoresistive (TMR) magnetic field sensor includes a sense element that defines a sense plane and a flux guide configured to direct a magnetic field perpendicular to the sense plane into the sense plane. The magnetic field sensor further includes a first coil arranged in a first plane, a second coil electrically insulated from the first coil and arranged in a spaced-apart second plane, and drive circuitry operatively connected to the first coil and the second coil. The drive circuitry in a first mode energizes the first and second coils to generate respective first and second fields that combine to set a magnetization of the flux guide. The drive circuitry in a second mode energizes only the first coil to generate the first field so as to set a magnetization of the sense element without changing the magnetization of the flux guide.

Abstract: Methods and apparatuses for detecting a foreign object during wireless charging are described. The method can include obtaining a first parameter value and a second parameter value according to: a charging current when a transmitted power falls into a first charging power range, obtained; or a charging voltage when the transmitted power falls into a second charging power range. A reference received power can be obtained according to the first parameter value, the second parameter value, and the received power of the wireless charging receiver. The existence of a foreign object between the wireless charging transmitter and the wireless charging receiver can be determined according to a difference between the transmitted power and the reference received power. For the first charging power range, the transmitter can output a constant voltage, and for the second charging power range, the transmitter can output a constant current.

Abstract: An inductive power transfer system (1) for coupling a power source to a load across an air gap (11) is disclosed. The system (1) comprises a primary unit (3) associated with a host platform and a secondary unit (5) arranged to receive power transmitted inductively from the primary unit (3). The primary unit (3) includes a phase detection circuit (21) configured to detect phase changes in a signal in the primary unit (3) indicative of changes in an operating condition within the secondary unit (5), and a drive circuit (17). The drive circuit (17) is configured to adjust the power level transmitted to the secondary unit (5) depending on the detected phase.

Abstract: Wireless power transfer systems, disclosed, include a wireless power transmission system and a wireless power receiver system. The wireless power transmission system includes a transmitter antenna configured to couple with a receiver antenna to transmit alternating current (AC) wireless signals to the receiver antenna. Antenna coupling may be inductive and may operate in conformance to a wireless power and data transfer protocol. A transmission controller drives the transmitter antenna at an operating frequency, and either the wireless power transmission system or the wireless power receiver system may damp the wireless power transmission to create a data signal containing a serial asynchronous data signal.

Abstract: A charging system and a charging method is disclosed. The charging system includes an electronic device and a charging device. The electronic device includes a first electromagnetic module and a first communication module. The charging device includes a second electromagnetic module and a second communication module. The first electromagnetic module includes a first charging interface that can be triggered to move to a first position or a second position based on a preset condition. The second electromagnetic module includes a second charging interface that can hold or release the first charging interface. The first communication module is configured to send indication information to the second communication module based on the preset condition. The second communication module is configured to trigger the second charging interface of the second electromagnetic module to hold or release the first charging interface based on the indication information.

Abstract: A detecting device includes a first coil, a third coil, a second coil, and a fourth coil. The first coil generates a first magnetic field on a to-be-measured object. The third coil generates a third magnetic field under the to-be measured object. The second coil generates a second magnetic field. After the fourth coil receives the second magnetic field, a voltage is induced. The induced voltage is amplified by an amplify circuit to drive the third coil. The directions of the currents generated by the first coil and the third coil, respectively, are the same.

Abstract: The present disclosure describes wireless power transfer systems and methods. One such system comprises a transmitter coil coupled to a power source; a receiver coil coupled to a load; and a metamaterial screen disposed between the transmitter coil and the receiver coil and configured to amplify and focus a magnetic field generated by the transmitter coil towards the receiver coil in a non-contact manner. Other systems and methods are also disclosed.

Abstract: A wireless electrical energy transmission system is provided. The system comprises a wireless transmission base configured to wirelessly transmit electrical energy or data via near field magnetic coupling to a receiving antenna configured within an electronic device. The wireless electrical energy transmission system is configured with at least one transmitting antenna and a transmitting electrical circuit positioned within the transmission base. The transmission base is configured so that at least one electronic device can be wirelessly electrically charged or powered by positioning the at least one device external and adjacent to the transmission base.

Abstract: The present application relates to an apparatus which comprises a wireless power transfer (WPT) system. This system comprises features which allow it to transfer more power wirelessly at extended distances than other systems operating in the same frequency range. The system possesses heat dissipation features; these features allow it to operate effectively in elevated-temperature environments, and to transfer power at higher levels and/or greater distances than a typical power-transfer system. The system also might include design features to withstand mechanical shocks, stresses, and impacts for use in a rugged environment. The system can also comprise adaptations to reduce electromagnetic interference (EMI), and can comprise specially shaped components with magnetic/ferrimagnetic properties that enhance performance. Other potential features include power conditioning by combining, within one circuit or one board, multiple elements that protect against excessive current, over-voltage, and/or reverse voltage.

Abstract: A wireless power transmitter and method are provided for transmitting charging power to a wireless power receiver. The method includes transmitting, to the wireless power receiver, a control signal including first time information and load change information; detecting a load change of the wireless power receiver during a period of time corresponding to the first time information; and determining that the wireless power receiver is authorized for charging, if the detected load change of the wireless power receiver corresponds to the load change information included in the control signal.

Abstract: Embodiments described herein are directed to wireless power transfer systems, which can include a vertical pair of an inner and an outer coupling capacitors. According to certain embodiments, one plate from each of the outer coupling capacitor at least in part overlaps one plate of the inner coupling capacitor on a primary side and another plate from the outer coupling capacitor at least partially overlaps another plate of the inner coupling capacitor on a secondary side. Each plate of the outer coupling capacitor has a larger area than each plate of the inner coupling capacitor. Further, a power transfer unit is included and configured to transfer power capacitively through the vertical pair of coupling capacitors, where the power transfer unit can include first and second inductors coupled to each plate of the outer coupling capacitor, respectively.

Abstract: A power transmitter (101) for wirelessly providing power to a power receiver (105) comprises a retriever (209) retrieving calibration data comprising a set of calibration parameters for each of a plurality of spatial positions of a calibration receiver relative to a calibration transmitter. A test generator (207) generates a test drive signal for a transmitter coil (103) to generate an electromagnetic test signal, and a test processor (213) determines a set of test parameters in response to the test drive signal. A position estimator (207) estimates a position of the power receiver relative to the power transmitter in response to a comparison of the test parameters to the calibration parameters for the plurality of spatial positions. The parameters include a power loss measure, a resonance frequency measure, and a coupling measure. The approach and specific parameters provide a substantially improved position estimation.

Abstract: The present disclosure relates to a charging system and a charging method for an automatic force detection robot for a gas pipeline. The charging system includes a primary charging unit disposed outside the gas pipeline and a secondary charging unit disposed in the gas pipeline, wherein the primary charging unit includes a primary magnetic core and a primary coil wound on the primary magnetic core, the secondary charging unit includes a secondary magnetic core and a secondary coil wound on the secondary magnetic core, the primary magnetic core and the secondary magnetic core form a closed magnetic field line, the primary coil is connected to a power supply, and the secondary coil is connected to a battery of the robot.

Abstract: A non-contact power feeding device includes multiple power feeding elements that are disposed spatially separated from one another in a movement direction, an AC power supply that supplies AC power to the power feeding elements, multiple power receiving elements that are provided in a moving body and that receive AC power in a non-contact manner, and a power receiving circuit that converts the AC power received by the power receiving elements and that outputs to an electrical load. When a length of the power feeding elements in the movement direction is LT, a separation distance between the power feeding elements is DT, a length of the power receiving elements in the movement direction is LR, and a separation distance between the power receiving elements is DR, the relationship DT?DR and the relationship (2×LR+DR)?LT are satisfied.

Abstract: The present disclosure relates to a method of aligning a set of objects, the method comprising the steps of: providing each object with at least one resonant circuit, the resonant circuits having at least one resonance frequency, and aligning the objects until a field coupling between the resonant circuits reaches a predetermined value. The disclosure further relates to an electronic alignment system.

Abstract: The wireless power receiver includes at least one wire of a sound-producing device. The at least one wire configured for both conveying sound signals or securing at least part of the sound-producing device to a user, and receiving power waves. The wireless power receiver also includes power harvesting circuitry coupled with the at least one wire and a power source of an electronic device, like a battery. The power harvesting circuitry is configured to isolate the received power waves from the conveyed sound signals, convert the received power waves to usable energy, and provide the usable energy to the power source of the electronic device.

Abstract: According to a first aspect of the present disclosed subject matter, a system for wirelessly charging a device, having a built-in coil, via a medium comprising: at least one relay adapted to inductively transfer power for charging the device; and a transmitter configured to inductively transmit to the at least one relay the power for charging the device, wherein the transmitter and the relay are separated by the medium and wherein the relay and the transmitter substantially face each other; wherein the transmitter further comprises a transmitter coil and a transmitter capacitor constituting a transmitter resonance circuit, wherein the relay further comprises a relay coil and a relay capacitor constituting a relay resonance circuit, and wherein a joint resonance frequencies (JRF) of both resonance circuits have a main resonance frequency (MRF); and wherein the transmitter operates at an operational frequency (OPF) selected from a range of OPFs, wherein the range of OPFs is substantially different than the MRF.

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 transmitter located along a support or a side of the first conveyance system and a support or a side of the second conveyance system; a wireless electrical power receiver of the first conveyance system located along a surface of the conveyance apparatus of the first conveyance system opposite the support or the side of the first conveyance system; a wireless electrical power receiver of the second conveyance system located along a surface of the conveyance apparatus of the second conveyance system opposite the support or the side of the second conveyance system, wherein the wireless electrical power transmitter is configured to wirelessly transmit electric power to the wireless electrical power receiver of the first and second conveyance system.