Abstract: A vehicular power supply device to be equipped in a vehicle includes an electric storage unit group, an inverter, a driving motor, a converter, an electric device group, a first switch, and a second switch. The electric storage unit group includes first and second electric storage units. The driving motor is to be coupled to the electric storage unit group via the inverter. The electric device group is to be coupled to the electric storage unit group via the converter. The first switch is to be controlled between a state where the first electric storage unit is coupled to the inverter and a state where the first electric storage unit is coupled to the converter. The second switch is to be controlled between a state where the second electric storage unit is coupled to the inverter and a state where the second electric storage unit is coupled to the converter.

Abstract: A power conversion device (3) is supplied with an electric power from an alternating current power source (1). An active filter device (2), which is a power source quality improvement unit, improves a quality of the alternating current power source (1). A controller (37) limits an operation of the power conversion device (3) so that any one of a power-source electric power, a power-source current, and a power-source harmonic obtained when a failure detection unit (4) detects a failure of the active filter device (2) becomes less than or equal to a maximum value of a corresponding one of the power-source electric power, the power-source current, and the power-source harmonic, the maximum value being obtained when no failure has occurred in the active filter device (2).

Abstract: A power conversion system includes an inverter circuit, a harmonic reducer, and a synchronizer. The inverter circuit is operable with electric power supplied from an alternating-current power source. The harmonic reducer is connected to the alternating-current power source. The inverter circuit includes a circuit main portion and a conversion control unit configured to control the circuit main portion. The harmonic reducer includes a current control unit configured to perform control to reduce a harmonic current flowing to the alternating-current power source. The synchronizer is configured to synchronize a state of the harmonic reducer with a state of the inverter circuit.

Abstract: A power converter includes a power conversion unit for a three-phase alternating current output from an alternating-current power source, and a current compensation unit that supplies a compensating current to the alternating-current power source. The current compensation unit includes a current compensation unit inverter including switching elements, a current compensation unit capacitor, a current compensation unit reactor, a compensation controller that obtains an output voltage command value, and a drive signal generator that generates a drive signal usable to drive the switching elements by a three-phase modulation method. The current compensation unit inverter supplies the compensating current to the alternating-current power source via the current compensation unit reactor. Td?(34.00/fsw?0.145)(1.55?0.

Abstract: A plurality of active filter devices (41, 42, 43) that each have an output connected to a harmonic-generating load device (2) and are capable of generating a compensating current for performing at least one of reduction of a harmonic current of the harmonic-generating load device (2) and improvement of the power factor of the fundamental wave are provided. The plurality of active filter devices (41, 42, 43) provide two or more types of capacities, and the number and combination of operating active filter devices among the active filter devices (41, 42, 43) change in accordance with the magnitude of the compensating current.

Abstract: A gate voltage control/gate resistance changing circuit (21) is accommodated in the same package (P1) as a switching element (11), and outputs a driving signal to the switching element (11) to control turning on and off of the switching element (11). When an external signal is input from outside of the package (P1) to a terminal (3c) of the package (P1), a changing unit (221) accommodated in the package (P1) changes the switching speed of the switching element (11) based on the signal.

Abstract: A controller performs a first control for controlling the power source power factor or a power source harmonic of the harmonic current such that an input power factor of at least one of a plurality of connection devices changes in a direction preceding the power source power factor in a case where the power source power factor changes in a lagging direction, and performs a second control for controlling the power source power factor or the power source harmonic such that the input power factor of at least one of the connection devices changes in a direction lagging behind the power source power factor in a case where the power source power factor changes in a leading direction.

Abstract: An object of the present invention is to provide a particulate composition containing crystalline ?,?-trehalose dihydrate, having an advantageous emulsifying ability. The above object is solved by providing a particulate composition comprising crystalline ?,?-trehalose dihydrate, which consists of particles containing ?,?-trehalose and maltose and/or maltotriose, wherein said particulate composition contains ?,?-trehalose in an amount of 70% by weight or higher but 90% by weight or lower, on a dry solid basis; and maltose and/or maltotriose in a total amount of 3% by weight or higher, on a dry solid basis; and has a degree of crystallinity for crystalline ?,?-trehalose dihydrate of 25% or higher but less than 90%, when calculated based on its powder X-ray diffraction profile.

Abstract: An air conditioner is connected to an AC power source. The air conditioner includes an adjustment unit and a control unit. The adjustment unit adjusts apparent power at a power source input terminal of the air conditioner. The control unit controls the adjustment unit, based on information according to a target value of apparent power to be supplied to the AC power source from the air conditioner.

Abstract: A load apparatus is connected to an AC power source and is supplied with power from the AC power source. An operation state control unit controls, based on a target value about a power-source quality including either a power-source power factor of the AC power source or a power-source harmonic of the AC power source and on a present power-source quality, an operation state of the load apparatus.

Abstract: A converter circuit converts AC electric power into DC power. An inverter circuit converts the DC power into AC power. A capacitor is connected in parallel to each of the converter circuit and the inverter circuit between these circuits. The capacitor allows variation of an output voltage from the converter circuit, and absorbs variation of an output voltage from the inverter circuit due to a switching operation. An overvoltage protection circuit includes a resistor and a semiconductor element connected in series to each other. The overvoltage protection circuit is connected in parallel to the capacitor to protect the inverter circuit from an overvoltage. First and second control units respectively control the inverter circuit and the overvoltage protection circuit.

Abstract: The disclosure inhibits an increase in the temperature of a motor without hindering everyday driving. The disclosure includes a motor temperature acquisition section, which acquires the temperature of the motor, a B&C control permission section, and a B&C control request section. The B&C control permission section and the B&C control request section are a control switching determination section, which determines whether to allow switching to an overheat limiting burn-and-coast control procedure that varies electric supply to the motor to be increased and decreased across the amount of electric supply required for constant speed traveling based on the temperature of the motor acquired by the motor temperature acquisition section.

Abstract: An object of the present invention is to provide a particulate composition containing crystalline ?,?-trehalose dihydrate, having an advantageous emulsifying ability. The above object is solved by providing a particulate composition comprising crystalline ?,?-trehalose dihydrate, which consists of particles containing ?,?-trehalose and maltose and/or maltotriose, wherein said particulate composition contains ?,?-trehalose in an amount of 70% by weight or higher but 90% by weight or lower, on a dry solid basis; and maltose and/or maltotriose in a total amount of 3% by weight or higher, on a dry solid basis; and has a degree of crystallinity for crystalline ?,?-trehalose dihydrate of 25% or higher but less than 90%, when calculated based on its powder X-ray diffraction profile.

Abstract: A controller performs a first control for controlling the power source power factor or a power source harmonic of the harmonic current such that an input power factor of at least one of a plurality of connection devices changes in a direction preceding the power source power factor in a case where the power source power factor changes in a lagging direction, and performs a second control for controlling the power source power factor or the power source harmonic such that the input power factor of at least one of the connection devices changes in a direction lagging behind the power source power factor in a case where the power source power factor changes in a leading direction.

Abstract: An operation tool for a fluid injector includes a selective movement mechanism which moves the fluid injector between a first protruding position and a second protruding position in a housing of an outer cylinder. When the fluid injector is at the first protruding position, microneedles of a multi-microneedle device are protruded out to a first distance from the first open end. When the fluid injector is at the second protruding position to discharge a fluid via the microneedles, the microneedles are protruded out to a second distance from the first open end, which is shorter than the first distance. The selective movement mechanism includes a rotational-linear movement conversion mechanism which moves the fluid injector between the first and second protruding positions along a longitudinal center line of the outer cylinder based on a direction and an amount of rotation of the outer cylinder relative to the fluid injector.

Abstract: A power conversion device (3) is supplied with an electric power from an alternating current power source (1). An active filter device (2), which is a power source quality improvement unit, improves a quality of the alternating current power source (1). A controller (37) limits an operation of the power conversion device (3) so that any one of a power-source electric power, a power-source current, and a power-source harmonic obtained when a failure detection unit (4) detects a failure of the active filter device (2) becomes less than or equal to a maximum value of a corresponding one of the power-source electric power, the power-source current, and the power-source harmonic, the maximum value being obtained when no failure has occurred in the active filter device (2).

Abstract: A gate voltage control/gate resistance changing circuit (21) is accommodated in the same package (P1) as a switching element (11), and outputs a driving signal to the switching element (11) to control turning on and off of the switching element (11). When an external signal is input from outside of the package (P1) to a terminal (3c) of the package (P1), a changing unit (221) accommodated in the package (P1) changes the switching speed of the switching element (11) based on the signal.

Abstract: In a device with a built-in active filter, the device incorporating an active filter therein and being connected to an AC power source, the active filter operates based on a value detected by a load information detection unit detecting load information on an AC power source outside the device with a built-in active filter.

Abstract: A load apparatus is connected to an AC power source and is supplied with power from the AC power source. An operation state control unit controls, based on a target value about a power-source quality including either a power-source power factor of the AC power source or a power-source harmonic of the AC power source and on a present power-source quality, an operation state of the load apparatus.

Abstract: A plurality of active filter devices (41, 42, 43) that each have an output connected to a harmonic-generating load device (2) and are capable of generating a compensating current for performing at least one of reduction of a harmonic current of the harmonic-generating load device (2) and improvement of the power factor of the fundamental wave are provided. The plurality of active filter devices (41, 42, 43) provide two or more types of capacities, and the number and combination of operating active filter devices among the active filter devices (41, 42, 43) change in accordance with the magnitude of the compensating current.