Abstract: When a control device determines, based on a sampling number in one period of a target modulation factor waveform, that the sampling number is less than a predetermined value in a case where a two-phase modulation scheme is selected and the target rotation number increases, the control device switches a modulation scheme from the two-phase modulation scheme to a three-phase modulation scheme.

Abstract: A method for producing an ashless coal which includes a slurry preparation step, an extraction step, a separation step, an ashless coal acquirement step, and a by-product acquirement step. The separation step is conducted under the state of being pressurized to a pressure equal to or higher than a vapor pressure of the solvent. In the by-product acquirement step, the solvent is evaporated and separated from the solid content-concentrated slurry by spraying the solid content-concentrated slurry into a flash tank in which a pressure is set to lower than a saturation pressure of the solid content-concentrated slurry from a spray nozzle while maintaining a pressure of the solid content-concentrated slurry in a nozzle orifice of the spray nozzle at a level equal to or higher than the vapor pressure of the solvent.

Abstract: A method for producing an ashless coal includes a slurry preparation, an extraction, a separation, an ashless coal acquirement, and a by-product acquirement. In the by-product acquirement, a solvent used in the slurry preparation is evaporated and separated from a solid-content concentrated liquid separated in the separation, and then, a by-product coal is acquired. The by-product coal is used as a fuel for heating a slurry obtained in the slurry preparation.

Abstract: A production apparatus of an ashless coal includes a preheater, an extraction tank, a feed pipe, a solid-liquid separator and a solvent separator. The preheater heats a solvent. The extraction tank extracts a coal component soluble in the solvent from a slurry including a mixture of a coal and the solvent heated by the preheater. The coal feeding unit feeds the coal to the feed pipe by pressuring a feed part to the feed pipe such that the solvent does not flow back. The solid-liquid separator separates a solution part containing the coal component from the slurry. The solvent separator evaporates and separates the solvent from the solution part to obtain an ashless coal.

Abstract: An image pickup system is an image pickup system in which an image pickup section and a confirmation section that displays a picked-up image from the image pickup section are separable, the image pickup system including: a first motion determination section that determines a motion of the image pickup section; a second motion determination section that determines a motion of the confirmation section; and a control section that controls at least one of the image pickup section and the confirmation section by obtaining a relationship between the motion of the image pickup section and the motion of the confirmation section based on determination results of the first and second motion determination sections.

Abstract: In a method for producing residue coal according to the present invention, a solvent is separated by evaporation from a solid material concentrate, which has been separated in a gravity settling vessel (7), in a solvent separator (10), thereby producing a residue coal mixture in which the solvent is remained in the residue coal. Subsequently, the remaining solvent is separated by evaporation from the residue coal mixture in a drier (11), thereby producing the residue coal. In the drier (11), the remaining solvent is separated by evaporation from the residue coal mixture utilizing a heat the residue coal mixture itself has. In this manner, an apparatus for drying the residue coal mixture can be simplified, and the cost required for the drying can be reduced.

Abstract: An image pickup system includes an image pickup unit and a confirmation unit that displays a picked-up image transmitted from the image pickup unit, the image pickup unit and the confirmation unit being separable from each other, and the image pickup system is provided with: a first motion determination section that determines a motion of the image pickup unit; and a control section that instructs the image pickup unit to perform continuous shooting based on a determination result by the first motion determination section when the image pickup unit and the confirmation unit are separated from each other, which enables photographing without missing a photo opportunity.

Abstract: A device includes a light emitting element, a light receiving element, an electronic part capable of processing a signal output from the light receiving element, an optical member covering the light emitting element and the light receiving element, and a board on which the light emitting element, the light receiving element, the electronic part, and the optical member are mounted. The board includes conductor wiring electrically connected to the light receiving element.

Abstract: A medical image display apparatus for displaying a thumbnail image corresponding to medical image data, and displaying the medical image data in a display area upon selection of the thumbnail image determines a display method of the medical image data in the display area, based on a designated position in the thumbnail image when the thumbnail image is selected by a user, and displays the medical image data in the display area, according to the determined display method.

Abstract: A motor unit, which drives a compressor unit, includes a stator, which generates a rotating magnetic field, and a rotor, which is rotated about a rotational axis by the rotating magnetic field at an inner side of the stator. A drive circuit unit is placed at the inner side of the stator such that a position of the drive circuit unit in a direction of the rotational axis overlaps with the stator.

Abstract: An image pickup display apparatus includes: a communication section that is capable of receiving a picked-up image from an image pickup unit; a display section that displays the picked-up image received by the communication section; an operation section for controlling image pickup by the image pickup unit; a state determination section that determines a state of a case in which the communication section, the display section and the operation section are housed; and a control section that receives a result of determination performed by the state determination section, to change a user interface provided by the display section and the operation section based on whether or not the case is arranged on another object.

Abstract: A motor drive apparatus includes multiple inverter circuits provided corresponding, respectively, to multiple motors, a controller configured to control the inverter circuits using switching signals, a detector configured to detect a current ripple generated by switching operations of the inverter circuits. The controller operates in a first mode and a second mode. In the first mode, carrier wave frequencies of reference carrier waves used to generate the switching signals for all the motors are set to the same basic frequency. In the second mode, the carrier frequency of the motor having a higher priority is set to the basic frequency, and the carrier frequency of the motor having a lower priority is set to a preset shift frequency. When the current ripple is not less than a predetermined value, a transition occurs from the first mode to the second mode.

Abstract: A controller for an electric compressor sets a temperature rise region A, a temperature drop region B, and a steady region C from change in temperature of switching elements, and sets a carrier frequency for each of the set regions. In the region A, the carrier frequency is changed according to the element temperature so that the carrier frequency decreases with increase of the element temperature at startup of a motor. In the region B and the region C, the carrier frequency is changed according to the number of revolutions of a compression mechanism, so that the carrier frequency decreases with increase of the number of revolutions of the compression mechanism, regardless of the element temperature.

Abstract: A high voltage electric device attached to a cooling unit includes heating components, an electric circuit board, a case, and an insulating member. The heating components are used at high voltage and are different in size. The heating components are fixed via lead wires respectively to the electric circuit board. The case accommodates the heating components and the electric circuit board. The insulating member seals the heating components and the electric circuit board in the case. An outermost peripheral surface of the insulating member on the cooling unit-side cooled by refrigerant is referred to as a reference surface. Respective shortest distances from the reference surface to the heating components are the same as each other. An electric compressor includes the high voltage electric device, an electric motor that is operated by electric power supplied by the high voltage electric device, and a compression mechanism that is driven by the electric motor and is applied to a refrigeration cycle.

Abstract: In a vehicular electric system, a first motor driver device and a second motor driver device are connected in parallel to a DC power source. A first capacitor is provided to suppress variations in a voltage developed between the DC power source and the first motor driver device. A second capacitor is provided to suppress variations in a voltage developed between the DC power source and a second motor driver device. A resistor is connected in series to the second capacitor. A filter circuit is thus suppressed form resonance even when a frequency included in a ripple current outputted from an inverter circuit of the first motor driver device overlaps a resonance frequency of the filter circuit.

Abstract: An imaging apparatus includes: an imaging unit that generates image data; a feature information generation unit that generates feature information smaller in data amount than the image data, the feature information indicating features of a subject image included in an image corresponding to the image data; an imaging-side first and second communication units; a communication status determination unit that determines the status of communication between an external communication device and the imaging-side first communication unit; and an imaging-side communication control unit that transmits the feature information to the communication device via the imaging-side second communication unit when the status of communication between the communication device and the imaging-side first communication unit is not favorable.