Abstract: A heat pump apparatus includes: a compression mechanism that compresses a refrigerant; a motor that drives the compression mechanism; an inverter that applies a voltage to the motor; and an inverter control unit that generates a drive signal for driving the inverter, based on a carrier signal, in which the inverter control unit periodically changes a carrier frequency of the carrier signal in a heating operation mode in which the refrigerant is heated, and generates the drive signal such that a period of time during which a voltage represented as a real vector is applied to the motor is kept constant regardless of the changed carrier frequency.

Abstract: A power converter includes an arm in which a plurality of converter cells are connected in series, each of the converter cells including at least two switching elements, a power storage element, and a pair of output terminals. A control device controls voltages of the plurality of converter cells by phase shift PWM control using a carrier signal for each converter cell. The converter cell includes a switch to have the converter cell bypassed. When the control device senses failure of the converter cell within the arm, it has a failed converter cell within the arm bypassed and rectifies uneven intervals among phases of carrier signals of a plurality of normal converter cells within the arm caused by failure of the converter cell.

Abstract: An information processing device includes a sound signal acquisition unit that acquires sound signals outputted from a mic array, an analysis unit that analyzes frequencies of the sound signals, an information acquisition unit that acquires predetermined information indicating a steering vector in a first direction as a direction from the mic array to a target sound source, and a calculation unit that calculates a filter for formation in a second direction as a direction different from the first direction based on the frequencies and the information indicating the steering vector in the first direction and calculates a steering vector in the second direction by using an expression indicating a relationship between the calculated filter and the steering vector in the second direction.

Abstract: An image reading device (1) includes a board (24) including a plurality of imaging elements (23) arranged along a scanning direction, and a housing (13) including (i) a plurality of optical components that are arranged along the scanning direction and (ii) a plurality of housing components (13a, 13b) that are arranged along the scanning direction. Each of the plurality of optical components focuses light reflected by a reading target onto a corresponding imaging element (23), and each of the plurality of housing components holds at least one optical component. The plurality of housing components (13a, 13b) are arranged to have a clearance therebetween and each of the plurality of housing components (13a, 13b) is fixed to the board (24) at a position to transmit light through the optical components to focus onto the corresponding imaging element (23).

Abstract: An object is to provide a DC distribution panel that, even when short-circuit current has occurred in one feeder, interrupts only the feeder where short-circuit current has occurred, and thus can continue operations of load apparatuses connected to normal feeders. This DC distribution panel includes: an input terminal including positive and negative input terminals; circuit breakers having short-circuit current interruption units connected to at least either of positive electric paths and negative electric paths respectively branched from the positive and negative input terminals; and output terminals including positive output terminals and negative output terminals of the plurality of circuit breakers. At least one of the plurality of circuit breakers includes a reverse current interruption unit for interrupting reverse current flowing through the positive electric path from the output terminal side to the input terminal side.

Abstract: To provide a power converter which can detect occurrence of excess current in early stage without providing a blanking time when the detection of excess current is not performed after the turn on of the switching device, and which can protect the power converter. A power converter includes a time change detection circuit that outputs a detection signal according to a time change rate of a main voltage; an excess current determination circuit that generates an excess current occurrence signal of normal current state when the detection signal is less than a first threshold value, and generates the excess current occurrence signal of excess current state when the detection signal is not less than the first threshold value; and a driving circuit that generates the driving voltage of OFF state when the drive command signal is ON state and the excess current occurrence signal is excess current state.

Abstract: A motor control device includes: a step-down device including a DC-output power conversion device having a first mode for outputting first voltage and a second mode for outputting second voltage lower than the first voltage; a power supply device; and a control device, and controls a motor. When a flying object takes off, the control device controls the power conversion device in the first mode. When the control device judges that flight information which is one or both of information of a motor parameter obtained along with control for the motor and information of an environmental factor relevant to the flight altitude of satisfies a predetermined condition, or when the control device has received an mode signal for which the second mode is selected on the basis of the flight information during control for the motor, the control device controls the power conversion device in the second mode.

Abstract: The present DC power supply and distribution system includes a plurality of distribution lines provided respectively corresponding to a plurality of loads, a first converter to convert an AC voltage from a commercial AC power source into a plurality of DC voltages and supply the DC voltages respectively to the distribution lines, a second converter to convert a DC power from a power generation and storage source into a plurality of DC powers and supply the DC powers respectively to the distribution lines, and a power controller to control the DC powers such that the efficiency of the first converter is increased, based on information related to the efficiency of the second converter.

Abstract: An object herein is to provide a bus bar module which is highly reliable in insulation performance, by reducing stresses imposed on its spacer to thereby suppress deterioration in the insulation property thereof. The bus bar module includes: a bus bar having a hole in its parallel planar region and made of an electrically conductive material; a bus bar opposed to the bus bar, having a hole in its parallel planar region and at a position corresponding to the hole, and made of an electrically conductive material; a spacer made of an insulating material, which is sandwiched between the bus bars, and in which a hole is provided so as to overlap with the hole and the hole; and a resin mold covering these bus bars and the spacer; wherein a through-hole that is established by the holes, is filled with a portion of the resin mold.

Abstract: A program creation support program to display devices that store data indicating the operating status of a control system and associated device values, based on a control program executed by a control apparatus, causes a computer to perform a dependency relationship extraction step of extracting the dependency relationships between the devices described in the control program, a log data input step of acquiring, as log data information, log data collected by the control apparatus during the operation of the control system, based on recording setting information describing a condition for collecting the log data information, a display information generation step of generating display information that visualizes the dependency relationships and visualizes the device values associated with the devices, based on the dependency relationships and the log data information, and a generation result output step of displaying the display information.

Abstract: An optical transmission apparatus includes a first multilevel optical phase modulator and a first semiconductor optical amplifier. The first semiconductor optical amplifier includes a first active region having a first multiple quantum well structure. Assuming that a first number of layers of a plurality of first well layers is defined as n1 and a first length of the first active region is defined as L1 (?m): (a) n1=5 and 400?L1?563; (b) n1=6 and 336?L1?470; (c) n1=7 and 280?L1?432; (d) n1=8 and 252?L1?397; (e) n1=9 and 224?L1?351; or (f) n1=10 and 200?L1?297.

Abstract: A manufacturing method for a power module capable of shortening a manufacturing time for a power module is obtained. The manufacturing method for a power module includes: a subassembly arranging step of placing a subassembly including a first electrode, a semiconductor device, and a second electrode on a heat sink via a joining material; and a transfer molding step of, after the subassembly arranging step, under a state in which the first electrode, the semiconductor device, and a second-electrode inner portion are arranged in a region surrounded by the heat sink and a molding die, injecting a thermoplastic resin into the region, wherein, in the transfer molding step, the subassembly is joined to the heat sink via the joining material with use of the resin.

Abstract: A stacked core includes a plurality of single plates which are a plurality of steel plates stacked on one another to constitute a stacked body, a first bonding layer that is sandwiched between the single plates in the stacked body and fixes the single plates to each other, and a second bonding layer that is spread in a stacking direction of the plurality of single plates on a side surface of the stacked body including each end surface of the plurality of single plates, and fixes the plurality of single plates to one another.

Abstract: An additive manufacturing apparatus produces a shaped article by adding a material melted by emission of a beam, to a workpiece. The additive manufacturing apparatus includes a machining head that emits the beam to the workpiece, a feed unit that feeds the material to the workpiece, and a numerical control device, which is a control unit that determines a machining path along which the machining head is caused to move with respect to the workpiece, and outputs a command to move the machining head. The control unit outputs a command to move the machining head along the machining path obtained by correction performed based on a moving direction of the machining head with respect to the workpiece.

Abstract: An elevator system that allows a plurality of autonomous mobile bodies to be rearranged in an alighting order in a car. The elevator system includes processing circuitry to move and stop an elevator car based on information indicating destination floors transmitted from autonomous mobile bodies, to select an autonomous mobile body in the car and an autonomous mobile body that will board the car as targets to be rearranged. The processing circuitry is further to determine an alighting order of the autonomous mobile bodies to be rearranged based on the destination floor of each of the autonomous mobile bodies to be rearranged, and to transmit information indicating the alighting order to each of the autonomous mobile bodies to be rearranged so that the autonomous mobile bodies are arranged one by one in the alighting order.

Abstract: The present invention concerns a method and device for monitoring the gate signal of a power semiconductor (SI), the gate signal of the power semiconductor (SI) being provided by a gate driver (12), generates an expected signal (VGexp) that corresponds to the signal outputted by the gate driver (12) when no deterioration of the gate driver (12) and/or of the power semiconductor (SI) and/or of a load linked to the power semiconductor (SI) exists, compares the expected signal (VGexp) and the signal (VGmeas) outputted by the gate driver (12), determines if a deterioration of the gate driver (12) and/or of the power semiconductor (SI) and/or of a load linked to the power semiconductor (SI) exists using the result of the comparing of the expected signal (VGexp) and the signal (VGmeas) outputted by the gate driver (12).

Abstract: An air-conditioning apparatus includes a four-way valve, a first three-way valve and a second three-way valve each having a closed port, a compressor, an indoor heat exchanger, an expansion valve, a first outdoor heat exchanger, a second outdoor heat exchanger, a bypass expansion valve, a check valve, a discharge temperature sensor, an indoor pipe temperature sensor, an indoor temperature sensor, a current sensor, and a controller configured to detect switching failure at the four-way valve, the first three-way valve, and the second three-way valve. The controller is configured to detect switching failure at the four-way valve, the first three-way valve, or the second three-way valve by using the temperatures measured by the discharge temperature sensor, the indoor pipe temperature sensor, and the indoor temperature sensor and the current in consideration of an operation status.

Abstract: A radar system, a radar device, and an interference avoidance method are obtained that can utilize frequency effectively even in three or more radar devices. A radar system includes three or more radar devices and a schedule management controller. Schedule management controller predicts an interference time period that is a time period during which the overlapping scanning/radiation range is generated, determines a first interference avoidance measure that is a measure to cause radar devices to use respective different use frequencies while keeping a restriction on the number of frequency channels, in the predicted interference time period, and determines a second interference avoidance measure to be performed by a radar device that is unable to avoid interference by the first interference avoidance measure.

Abstract: In a tactile sensation presentation panel according to the present disclosure, a tactile sensation presentation screen includes a tactile sensation electrode including a plurality of first electrodes and a plurality of second electrodes alternately disposed on a transparent insulation substrate at intervals. A first voltage signal having a first frequency is applied to the plurality of first electrodes located in at least a partial region of the transparent insulation substrate, and a second voltage signal having a second frequency different from the first frequency is applied to the plurality of second electrodes located in the at least partial region of the transparent insulation substrate. First electrostatic capacitance formed between the tactile sensation electrode and a pointer is calculated. An amplitude voltage and frequency of first and second voltage signals are adjusted based on the calculated first electrostatic capacitance.