Abstract: The electric machine system includes an electric machine having a rotor and a coil; the power converter that outputs an output current to the coil of the electric machine; and a controller that controls the power converter. The controller includes a signal output unit that outputs a signal for controlling a mode of the output current to the power converter; and an abnormality detection unit that receives an abnormality signal indicating an abnormal situation. The signal output unit outputs a demagnetization control signal to the power converter when the abnormality detection unit receives the abnormality signal. The power converter causes a demagnetization current for a demagnetization magnetic flux that demagnetizes the permanent magnet of the rotor to flow through the coil in response to an input of the demagnetization control signal.

Abstract: A communication control device comprises: an antenna; and a control unit that controls wireless communication related to wireless power transfer to a power receiver device through a power transmitter device. The control unit acquires via the antenna a radio wave status of each of a plurality of channels related to the wireless communication. The control unit acquires a power transmission status of the wireless power transfer. The control unit sets, based on the acquired power transmission status, switching conditions for switching the channel according to the radio wave status. The control unit causes the channel to be switched based on the radio wave status and the switching conditions. The control unit causes the wireless communication to continue on the switched channel.

Abstract: A power supply facility includes a wireless communication unit capable of wirelessly communicating with a plurality of electric vehicles traveling in line, a plurality of power supply coils installed at a predetermined interval, and an inter-vehicle calculation unit configured to acquire a plurality of pieces of information including power supply coil interval information indicating a distance of the predetermined interval, information on an entire length of a vehicle body of each of the plurality of electric vehicles, and information on a position of a power reception coil installed in each of the vehicle bodies, and calculate an inter-vehicle distance for leading each of the plurality of electric vehicles to be parked in accordance with the acquired plurality of pieces of information so as to align the plurality of power supply coils with the power reception coils to face each other.

Abstract: A foreign object removal device removes a foreign object on a vehicle-body undersurface of a vehicle traveling a road surface in wireless power transfer from a power transmission unit of a power transmission device installed on the road surface to a power reception unit of a power reception device mounted on the vehicle-body undersurface, and comprises a foreign object removal unit installed on the road surface around the power transmission unit and removing the foreign object on the vehicle-body undersurface.

Abstract: A communication control device comprises: an antenna; and a control unit that controls wireless communication related to wireless power transfer to a power receiver device through a power transmitter device. The control unit acquires via the antenna a radio wave status of each of a plurality of channels related to the wireless communication. The control unit acquires a power transmission status of the wireless power transfer. The control unit sets, based on the acquired power transmission status, switching conditions for switching the channel according to the radio wave status. The control unit causes the channel to be switched based on the radio wave status and the switching conditions. The control unit causes the wireless communication to continue on the switched channel.

Abstract: A wireless power feeding apparatus (100) is configured to perform wireless communication with a power reception side apparatus (200) and to perform wireless power transmission to the power reception side apparatus. The wireless power feeding apparatus is provided with: a communicating device (120) configured to switch between a first communication method that allows one-to-many communication and a second communication method that has less communication delay than the first communication method, thereby performing the wireless communication; and a communication controlling device (110) configured to control the communicating device to switch from the first communication method to the second communication method and to perform the wireless communication in the second communication method, on condition that the wireless power feeding apparatus becomes in a state in which the power transmission can be performed, when the communicating device performs the wireless communication in the first communication method.

Abstract: A wireless power feeding apparatus (100) is configured to perform wireless communication with a power reception side apparatus (200) and to perform wireless power transmission to the power reception side apparatus. The wireless power feeding apparatus is provided with: a communicating device (120) configured to switch between a first communication method that allows one-to-many communication and a second communication method that has less communication delay than the first communication method, thereby performing the wireless communication; and a communication controlling device (110) configured to control the communicating device to switch from the first communication method to the second communication method and to perform the wireless communication in the second communication method, on condition that the wireless power feeding apparatus becomes in a state in which the power transmission can be performed, when the communicating device performs the wireless communication in the first communication method.

Abstract: An image processing apparatus receives an input image signal and performs an enhancement process on a high frequency component included in the input image signal based on a low frequency component of the input image signal. The apparatus extracts a low frequency component from the input image signal and combines a step variation component of the input image signal with the low frequency component to generate a combined wave component. The apparatus performs an enhancement process on the high frequency component obtained by removing the combined wave component from the input image signal.

Abstract: An image processing apparatus receives an input image signal and performs an enhancement process on a high frequency component included in the input image signal based on a low frequency component of the input image signal. The apparatus extracts a low frequency component from the input image signal and combines a step variation component of the input image signal with the low frequency component to generate a combined wave component. The apparatus performs an enhancement process on the high frequency component obtained by removing the combined wave component from the input image signal.