Abstract:
According to one embodiment, a non-contact charging system for an elevator includes a secondary battery, a power receiving pad, a rectifier circuit and a first capacitor. The secondary battery is located in an upper part of a cage. The power receiving pad is located in a bottom part of the cage. The rectifier circuit is connected between the power receiving pad and the secondary battery. The first capacitor is connected between the power receiving pad and the rectifier circuit, located in the bottom part of the cage.
Abstract:
According to one embodiment, there is provided a power transmitting device including: a power supply, a resonator, an adjuster and a controller. The power supply supplies AC power. The resonator includes a magnetic core and a coil wound around the magnetic core, the resonator wirelessly transmitting the AC power supplied from the power supply to a different resonator arranged to be opposed to the resonator. The adjuster relatively moves the coil and the magnetic core along a longitudinal direction of the coil. The controller controls the adjuster based on a value of current flowing in the resonator to adjust relative positions of the magnetic core and the coil.
Abstract:
According to an embodiment, there is provided a leak preventing device of electromagnetic wave, including a metal pipe and a magnetic material part. The metal pipe is arranged to surround a periphery of a first electric power transmission device. The first electric power transmission device wirelessly transmits electric power to a second electric power transmission device via an electromagnetic wave. The second electric power transmission device is opposed to the first electric power transmission device. An opening is formed on the metal pipe along a circumferential direction of the metal pipe. The magnetic material part is arranged within the metal pipe along the circumferential direction the metal pipe.
Abstract:
According to one embodiment, there is provided a power transmitting device including: a power supply, a resonator, an adjuster and a controller. The power supply supplies AC power. The resonator includes a magnetic core and a coil wound around the magnetic core, the resonator wirelessly transmitting the AC power supplied from the power supply to a different resonator arranged to be opposed to the resonator. The adjuster relatively moves the coil and the magnetic core along a longitudinal direction of the coil. The controller controls the adjuster based on a value of current flowing in the resonator to adjust relative positions of the magnetic core and the coil.
Abstract:
According to an embodiment, there is an inductor, including: a magnetic core; a winding formed around the magnetic core; a first resin provided between turns of the winding; and a second resin covering the winding and the first resin, wherein the second resin has higher filler content than the first resin.
Abstract:
According to an embodiment, there is provided a power receiver including: a first rectifying circuit, a second rectifying circuit, a connecting part and a controller. The first rectifying circuit rectifies a first AC power generated by a first AC power generating device. The second rectifying circuit rectifies a second AC power generated by a second AC power generating device. The connecting part electrically connects an output terminal of the first rectifying circuit and an output terminal of the second rectifying circuit, in parallel. The controller performs a control such that the first AC power generating device and the second AC power generating device do not operate simultaneously.
Abstract:
There is provided an electronic equipment including: a first case that incorporates an electronic component; a second case having a first surface that is common with a surface of the first case, a second surface that has an angle with respect to the first surface and a third surface that has an angle with respect to the second surface; and electric power receiving coils built in parts that face respectively the second surface and the third surface.
Abstract:
A control apparatus controlling a power output apparatus that generates, based on input power from one of an electrical grid and a power storage, output power to another of the electrical grid and the power storage is provided. The control apparatus includes: a communicator to receive a grid frequency of the electrical grid and a state of charge of the power storage, or information allowing the grid frequency and the state of charge to be calculated; and a processor to determine an output destination and an output rate of the output power, based on a function of calculating the output destination and the output rate according to the grid frequency. The output destination and the output rate are adjusted according to the state of charge, by the processor changing, according to the state of charge, the function used to determine the output destination and the output rate.
Abstract:
According to one embodiment, an electronic apparatus connectable to a partial power system which is a part of a power system and comprises a first power source apparatus, power supply of the first power source apparatus stopped in response to detecting an islanding of the partial power system, includes: controlling circuitry configured to output to the partial power system a first signal to disable detecting the islanding of the partial power system by the first power source apparatus during at least part of a period during which the partial power system is electrically separated from the power system.
Abstract:
According to one embodiment, an inductor device includes a first pad and a second pad. The first pad includes a first compensation part located in a first direction side and a first inductor part located in a second direction side. The second direction is an opposite direction of the first direction. The second pad includes a second compensation part located in the second direction side and a second inductor part located in the first direction side. The first compensation part and the second compensation part each include a compensation capacitor. The first inductor part includes a first core and a first coil winded around the first core. The second inductor part includes a second core and a second coil winded around the second core.