According to an embodiment, a management system manages a power transmitter capable of wirelessly transmitting power to a power receiver of a movable object. The management system includes a detection unit configured to detect a state of the power transmitter, a storage unit configured to store a relationship between the state of the power transmitter and a power transmission level indicating possibility of power transmission of the power transmitter, an identification unit configured to identify the power transmission level corresponding to the state detected by the detection unit, and an output unit configured to output the identified power transmission level before the power transmitter starts transmitting power. The power transmission level includes at least an unavailable level indicating that power transmission is impossible, a limitation level indicating that power transmission is possible under a predetermined limitation, and a normal level indicating that power transmission is possible without limitation.

A power supply apparatus and method for providing electric energy to a target system are provided. The power supply apparatus includes: a capacitor module configured to store electric charge and provide electric energy to a target system based on the stored electric charge; an internal battery module configured to be operably connected with the capacitor module in series; and an output interface configured to couple the internal battery module with the capacitor module. The internal battery module and the capacitor module provide electric energy to the target system in controllable series connection through the output interface.

Systems and methods for supplying power to an electronic device are provided. A first power limit is received from the electronic device at a transmitter. The transmitter input power is set to correspond to the first power limit. The transmitter supplies power corresponding to the transmitter input power to the electronic device to initiate charging, and an electrical value associated with the transmitter input power is monitored. During monitoring, the first electrical value is compared to a predefined second electrical value, the power supply to the receiver is discontinued based on the monitoring, and the transmitter input power is adjusted to correspond to a second power limit based on the comparison.

Systems, methods, and devices for wireless communication that support mechanisms for signaling resources available for energy harvesting (EH) to a UE in a wireless communication system. In aspects, a base station transmits an indication to an UE of resources (e.g., time and/or frequency resources) available to the UE for EH. The resources may include resources over which uplink transmissions are transmitted from one or more UEs and/or resources over which downlink transmission are transmitted from the base station to the one or more UEs. The base station may include additional information in the indication to the UE. In aspects, the indication from the base station to the UE of the resources available for EH and/or the additional information may enable the EH UE to more efficiently harvest energy from the uplink transmissions from neighboring UEs and/or downlink transmissions from the base station.

Aircraft power distribution systems and methods for regulating a system voltage in aircraft power distribution systems are described. An example system includes a first generator, a first power feeder, a second power feeder, a first load, a second load, and a plurality of contactors. The first power feeder and the second power feeder are coupled in parallel between the first generator and a power panel. The first load is coupled to the first power feeder, and the second load is coupled to the second power feeder. The plurality of contactors is configurable to transfer power in a first direction from the first generator to both the first load and the second load during a first mode of operation, and configurable to transfer power in a second direction from the power panel to the first load or the second load during a second mode of operation.

A power supply control apparatus includes: a first system configured to supply electric power of a first power supply to a first load; a second system configured to supply electric power of a second power supply to a second load; an inter-system switch capable of connecting the first system to the second system and disconnecting the first system from the second system; a battery switch capable of connecting the second power supply to the second system and disconnecting the second power supply from the second system; a primary ground fault detection unit configured to cut off the inter-system switch and conduct the battery switch when a ground fault of the first system or the second system is detected by the primary ground fault detection unit; a secondary ground fault detection unit as defined herein; and a failure determination unit as defined herein.

A motor vehicle includes a high-mounted brake light which is arranged on a rear part of the motor vehicle, and an energy source for making available energy for the motor vehicle. A charging plate is connected to the energy source, and the charging plate is arranged in a rear portion of the motor vehicle. The rear part is a wing of a spoiler, and a receiver coil is arranged in the rear part. The receiver coil can be coupled in a wireless fashion to the charging plate for contactless transfer of energy between the brake light and the energy source.

A fuel cell system includes a battery, a fuel cell, an air pump, and a processor. The battery stores electric power. The fuel cell supplies electric power to the battery. The air pump is driven with the electric power supplied from the battery to supply air to the fuel cell. The processor, when starting the fuel cell system, is configured to compare an amount of the electric power stored in the battery with a threshold electric power. If the amount of the electric power is higher than or equal to the threshold electric power, the air pump is driven. If the amount of the electric power is lower than the threshold electric power, the air pump is prohibited to drive.

Systems and methods for wirelessly charging one or more electronic devices in a vehicle (e.g., electronics in the vehicle seat or charging occupant devices from charging system embedded in the vehicle) are described. One method includes receiving a direct current (DC) signal from a power source, amplifying the received DC signal to generate an amplified alternating current (AC) signal, monitoring an internal signal in the power amplifier and adjusting one or more properties of the power amplifier in response to the monitored signal. The amplified AC signal is transmitted by one or more transmit antennas

This application is directed to methods and systems for providing electrical charge to a vehicle. The system can include a generator configured to generate an electrical output based on a mechanical input responsive to a rotation of a driven mass. The system can include an ultracapacitor module configured to receive energy from the generator. The system can include an energy retainer configured to receive energy from the ultracapacitor module or from the generator. The system can include a traction motor configured to receive energy from the energy retainer or from the ultracapacitor module.