Abstract: A non-contact power supply system includes an area of AC power supply including a plurality of non-contact power supply devices, a plurality of feeders, and an electrostatic coupler to electrostatically couple at least two non-contact power supply devices to each other.

Abstract: A non-contact power supply device includes an inverter to convert power supplied from a power supply into a predetermined AC power, feeders provided on a track rail to transmit the AC power to a ceiling conveyor, a filter circuit including a reactor and a capacitor, and a controller configured or programmed to perform power control of the AC power that is to be supplied to the feeders. The controller is configured or programmed to obtain a current value output from the inverter while changing a switching frequency of switches of the inverter in a state in which a current having a predetermined value flows through the feeders, and to set and output a reactor value of the reactor and a capacitance value of the capacitor based on the switching frequency at which the current value is minimum.

Abstract: A storage apparatus that stores objects includes a housing; a fixed part disposed in the housing and fixed in a position against the housing; a rotating part connected to the fixed part through a rotating shaft extending in the vertical direction and rotates relative to the fixed part as a center of the rotating shaft; and a rotating shaft driving part that rotates the rotating shaft; wherein the fixed part includes a power-transmission unit that transmits electric power in noncontact state; and the rotating part includes a rotating shelf on which objects are disposed; a power drive device disposed to rotate integrally with the rotating shelf and driven by electric power; and a power-receiving unit that supplies the electric power transmitted from the power-transmission unit to the power drive device.

Abstract: A storage apparatus that stores objects includes a housing; a fixed part disposed in the housing and fixed in a position against the housing; a rotating part connected to the fixed part through a rotating shaft extending in the vertical direction and rotates relative to the fixed part as a center of the rotating shaft; and a rotating shaft driving part that rotates the rotating shaft; wherein the fixed part includes a power-transmission unit that transmits electric power in noncontact state; and the rotating part includes a rotating shelf on which objects are disposed; a power drive device disposed to rotate integrally with the rotating shelf and driven by electric power; and a power-receiving unit that supplies the electric power transmitted from the power-transmission unit to the power drive device.