Abstract: A power supply apparatus includes a primary-side circuit and a secondary-side circuit magnetically coupled by a transformer. The secondary-side circuit includes: a first circuit that is connected to a secondary winding of the transformer, performs current doubler rectification, and outputs a first output voltage; a second circuit that is connected to the secondary winding of the transformer, performs a step-down chopping operation, and outputs a second output voltage; semiconductor switching elements that control the step-down chopping operation; and diodes that are shared by the first circuit and the second circuit when rectifying a direct current voltage supplied from the primary-side circuit. The first circuit includes first inductors connected in parallel. A control unit controls switching of the primary-side circuit to establish electrical continuity between the secondary winding of the transformer and the first inductors in order.

Abstract: Exemplary implementations are directed to wireless power in-band signaling by load generation. An apparatus for communicating with a wireless power transmitter is provided. The apparatus comprises a receiver configured to generate a voltage based on wirelessly received charging power from the transmitter. The apparatus comprises a load configurable to be coupled to and decoupled from the receiver. The apparatus comprises a switching circuit configured to encode a communication to the transmitter by adjusting an average power dissipated by the load detectable by the transmitter. The average power is based on a duty cycle with which the switching circuit couples and decouples the load from the receiver under control of a control signal.

Abstract: A system for transmission of at least power using inductive wireless coupling includes an environmentally sealed dongle and a mounting component which releasably mates with the dongle. The dongle is sized for use with one hand, and may be coupled by an umbilical to either a garment of the user or to a vehicle structure for example a seat, in which case the mounting component is coupled to the vehicle structure or to the garment respectively. The dongle and the mounting component include first and second inductive coils respectively and corresponding ferrite cores. The coils are positioned within the dongle and mounting component so that they are aligned for their inductive coupling when the dongle and mounting component are mated. The positioning and alignment of the coils provides a substantially closed magnetic path between the coils. The mounting component may be a receptacle.

Abstract: A vehicle including a high-voltage electric battery assembly including first and second battery cell modules and DC/DC electric power converter assembly is described. The DC/DC electric power converter assembly selectively converts electric power from the first battery cell module and the second battery cell module. A second end of the DC/DC electric power converter is electrically connected to a low-voltage system. The low-voltage system includes a first subsystem configured to provide a critical vehicle operation. A controller includes algorithmic code executable to monitor the high-voltage battery assembly, including, upon detecting a fault in the first battery cell module of the high-voltage battery assembly, controlling the DC/DC electric power converter assembly to electrically convert electric power from the second battery cell module to low-voltage electric power that is transferred to the first subsystem.

Abstract: A power supply apparatus including a near-field wireless communication unit that wirelessly communicates with a plurality of communication terminals, a power transmission unit that sets a plurality of resonance frequencies to transfer power in a non-contact manner to each of the plurality of communication terminals, and a control unit that determines a priority level of each of the communication terminals based on identification information received from the communication terminals and determines an amount of power transmitted at each of the resonance frequencies based on the determined priority levels.

Abstract: A method for acquiring signals such as signals representative of the state of contacts (C1-Cn) of a motor vehicle, on communication ports (P1-Pn), which can be configured either in input mode or in output mode, of an electronic unit (1), called a computer, of the motor vehicle, according to which method the signals are acquired periodically by the alternation of time intervals of acquisition of the signals with standby time intervals. This method consists in configuring each communication port (P1-Pn) in input mode during the acquisition time intervals, and in level 0 output mode during the standby time intervals.

Abstract: A method is provided for transferring electrical power. AC power is generated and guided at least partially underwater. The AC power is guided through a cable from a first end of the cable to a second end of the cable. A frequency of the AC power guided through the cable is adjusted in dependence of a length of the cable between the first end and the second end of the cable.

Abstract: A method of synchronization control of a power transmitting unit (PTU) includes network-connecting a PTU to a PTU operating in a slave mode by setting an operation mode of the PTU to a master mode, and transmitting a signal to a power receiving unit (PRU) by controlling either one or both of a communication time and a communication frequency of the PTU operating in the slave mode.

Abstract: In order to transfer a signal for driving a high-side semiconductor power switch, a signal transfer device includes a transmitting circuit, a receiving circuit, and an insulating transformer provided between the transmitting circuit and the receiving circuit. In the insulating transformer, a secondary side of a set transformer part and a secondary side of a reset transformer part are magnetically coupled. The magnetic coupling direction is formed so that a secondary-side terminal of the transformer part and a secondary-side terminal of the transformer part can have polarities reverse to each other. Thus, it is possible to provide a signal transfer device for transferring a signal through an insulating transformer, in which occurrence of common-mode noise can be suppressed and a countermeasure circuit against the noise can be simplified.

Abstract: Power delivery systems and methods described herein conductively couple several input lines with a cable that conducts a multi-phase electric current. The input lines separately conduct different phases of the electric current. Output lines are conductively coupled with plural machines, and separately conduct the different phases of the electric current. Plural switching devices are conductively coupled with the input lines and with the output lines, and are used to control the switching devices in order to conduct the different phases of the electric current to the machines. A first set of the switching devices is closed to separately conduct the different phases of the electric current to a first machine of the machines. A different, second set of the switching devices is separately closed to separately conduct the different phases of the electric current to a different, second machine of the machines.

Abstract: A transmission apparatus transmits electric power via a medium that is present between the transmission apparatus and a receiving apparatus. The transmission apparatus includes: an antenna; and a power transmission circuit that outputs electric power via the antenna of the transmission apparatus, the electric power having a first resonance frequency determined by an impedance of the medium, an impedance of the antenna of the transmission apparatus, and an impedance of an antenna of the receiving apparatus.

Abstract: An auxiliary battery which is a main power supply is used as power source electric power supplying means for supplying power source electric power to a control device, and an auxiliary power supply is further provided. When an abnormality occurs in the auxiliary battery, the power supply for supplying power source electric power to the control device is switched from the auxiliary battery to the auxiliary power supply by a power supply switching device, to operate the control device stably and perform discharging of a battery. Thus, the discharging can be stopped before the battery is overdischarged.

Abstract: There are provided PCB capacitor variable device and method. The PCB capacitor variable device includes: a PCB forming any parallel capacitor by disposing a dielectric layer between a first pattern and a second pattern; and a switch unit connected to a pattern of one of the capacitors to switch the pattern of one of the capacitors so as to control equivalent capacitance of the capacitor. According an exemplary embodiment of the present disclosure, the capacitor is implemented using the PCB pattern and the dielectric substance and therefore the miniaturization and weight lightening of the wireless communication system may be implemented. Further, according to an exemplary embodiment of the present disclosure, the capacitor may be selectively switched and therefore the optimized frequency required in the output of the amplification unit may be implemented.

Abstract: A terminal connection assembly that provides battery power (also referred to as B+ power) to one more bus bar(s) in a power distribution device that is part of a vehicle electrical system, such as a power distribution box (PDB). The terminal connection assembly may include a post, a cylinder, annular contacts, and a retention feature and the terminal connection assembly is designed to improve the ease with which the power distribution device is assembled and/or serviced.

Abstract: A renewable energy system comprising a solar panel that is adapted to be mounted on a structure and convert solar energy into electrical energy, a windmill that is adapted to be mounted on the structure and convert wind energy into electrical energy, a window turbine assembly that is adapted to convert wind energy into electrical energy, and a means for shutting down the renewable energy system that is adapted to automatically shut down the system in the event of an emergency. A method for a renewable energy system comprising providing a renewable energy system and converting renewable energy into electrical energy.

Abstract: Embodiments of the disclosure may include a system for transferring power, the system having a donor mobile device. Such a donor mobile device may include processor(s) and a donor wireless power transfer mechanism coupled to the processor(s). In addition, the donor mobile device may include software application(s) that: (i) configure the donor wireless transfer mechanism on the donor mobile device to initiate power transfer; and (ii) transfer power using the donor wireless transfer mechanism. The system may also have a receptor mobile device including processor(s) and a receptor wireless power transfer mechanism coupled to the processor(s). Further, the receptor mobile device may include software application(s) that: (i) configure the receptor power transfer mechanism on the receptor mobile device to receive power; and (ii) receive and convert received power into electric current using the receptor power transfer mechanism.

Abstract: An electric power transmission device contactlessly transmits electric power to an electric power receiving device. The electric power transmission device includes an inverter, a power transmission unit and an electronic control unit. The electronic control unit is configured to determine whether a current phase of output current flowing from the inverter to the power transmission unit leads output voltage, and adjust a frequency of the AC power in a direction to reduce a lead angle of the current phase when leading of the current phase relative to the output voltage is detected.

Abstract: A power supply system and a power supply method thereof are disclosed. The power supply system includes a master power supply device and a slave power supply device. When a master power detection module detects that a current value of a master power signal generated from a master power supply module increases to a first loading proportion, a master micro-controlling module will notices a slave micro-controlling module via a controlling pin to enable a slave power supply module to generate a slave power signal. When a slave power detection module detects that a current value of the slave power signal decreases to a second loading proportion, the slave micro-control module will control the slave power supply module to stop generating the power signal.

Abstract: A photovoltaic system includes solar cells and photovoltaic inverters configured to convert direct current generated by the solar cells to alternating current. Grid voltage at the point of interconnection (POI) of the photovoltaic system and the power grid is measured and compared to a setpoint. A control signal is generated based on the measured grid voltage. The control signal is provided to the photovoltaic inverters. The control signal is adjusted to cause the photovoltaic inverters to generate or absorb reactive power to respond to transient grid voltage changes.

Abstract: A power transfer system includes: a transmitting device having a transmitting coil and a receiving device having a receiving coil, the two coils being inductively coupleable to one another for the purpose of transferring power, so that a power transfer path exists between them; an electrical load for connecting with terminals of the receiving coil; a detection device for detecting an electrical parameter which indicates the inductance of the transmitting coil while the electrical load is connected to the receiving coil; and a determination device for determining an object in the area of the power transfer path on the basis of the detected parameter.