Abstract: A power switching control device includes a voltage measurement unit to measure a power-source-side voltage of a circuit breaker and a load-side voltage of the circuit breaker, an inter-pole-voltage estimation unit to estimate a future inter-pole voltage from a value of the power-source-side voltage and a value of the load-side voltage, a target closing-clock-time determination unit to set a target activation point of the circuit breaker on a waveform of an absolute value of the future inter-pole voltage, set an inter-pole withstand-voltage characteristic line calculated from a rate of decrease of dielectric strength, so that the inter-pole withstand-voltage characteristic line passes through the target activation point, and determine a clock time when the inter-pole withstand-voltage characteristic line becomes zero as a target closing clock time of the circuit breaker, and a closing control unit to close the circuit breaker at the target closing clock time.

Abstract: The present invention provides a phase control device applied to a three-phase circuit including a three-phase transformer and a three-phase breaker that turns on/off the transformer. The device suppresses an excitation rush current generated in the transformer. The device includes a controller that closes any one phase of the breaker as a closing first phase and subsequently closes the other phases, a determiner that determines the closing first phase based on residual magnetic fluxes of the respective phases in the transformer, a determiner that determines, based on a pre-arc characteristic and a closing time variation characteristic of the breaker, target closing phases and target closing times of the closing first phase and the other phases, a calculator that calculates a closing time of each phase of the breaker, and an operation time table that stores, as a median of the variation characteristic represented by a normal distribution, the calculated time.

Abstract: A circuit breaker characteristic monitoring device monitors the operation of a circuit breaker to estimate the amount of consumption of a movable contact and fixed contacts included in the circuit breaker. The device includes an operating time measurement unit to measure at least one of closing time, which is the time required for the circuit breaker to be closed after starting a closing operation, and opening time, which is the time required for the circuit breaker to be open after starting an opening operation, and a contact consumption amount estimation unit to estimate the amount of consumption of the movable contact and the fixed contacts on the basis of the result of measurement performed by the operating time measurement unit and travel speed of the movable contact during the closing operation or the opening operation for which the measurement result is obtained.

Abstract: A target pole-close timing determining unit corrects a breaker characteristic correction signal of a preceding turn-on phase by using a correction amount which is proportional to an absolute value of the interpolar voltage upon turn-on of the proceeding turn-on phase, and a correction amount which is proportional to an elapsed time after a target pole-close timing of the preceding turn-on phase, to generate a subsequent phase interpolar voltage signal, and determines a target pole-close timing of the subsequent turn-on phase at a timing when the subsequent phase interpolar voltage signal is equal to or smaller than a threshold value.

Abstract: A power switching control apparatus includes a current measurement unit that measures the current of a main circuit; a current estimation unit that detects a fault current on the basis of a current measurement value and estimates a future current waveform on the basis of a current waveform measured in a given duration after the detection; a target opening time determination unit that uses a current zero point obtained from the estimated current waveform, a predicted opening time, and a given minimum arc duration so as to determine a time by subtracting a sum of the opening time and the minimum arc duration from the current zero point as the target opening time; and an opening control unit that waits until the nearest one of the target opening times is reached and transmits an interruption control signal when the target opening time is reached.

Abstract: A power switching control apparatus includes a voltage measurement unit that measures a power-source side voltage and a transmission-line side voltage of a circuit breaker, a voltage estimation unit that estimates a power-source side voltage estimate value and a transmission-line side voltage estimate value according to measurement values, and a target closing time calculation unit that calculates a target closing time according to the estimate values. The target closing time calculation unit calculates an interpolar voltage estimate value by using both the power-source side and the transmission-line side voltage estimate value, calculates an electric turn-on time range, which is the maximum variation range of an electric turn-on time of the circuit breaker, calculates a maximum value of interpolar voltage, and determines that a time at which the maximum value of the interpolar voltage is not more than a threshold and achieves the local minimum value be a target closing time.

Abstract: To obtain a vehicular seat with which the expansion and deployment of expanding portions can be completed in a short amount of time. A vehicular seat has: a seat cushion; a first expanding portion that is provided in the seat cushion on one side thereof with respect to a seat width direction center and which, upon receiving a supply of gas, is expanded and deployed; a second expanding portion that is provided in the seat cushion on the other side thereof with respect to the seat width direction center and which, upon receiving a supply of gas, is expanded and deployed in such a way as to oppose the first expanding portion across a central space portion in the seat width direction; and gas supplying device which, when actuated at the time of a frontal impact of the vehicle, supplies gas to the first expanding portion and second expanding portion.

Abstract: A phase control device includes a connection error detection unit. The connection error detection unit includes a phase sequence detection unit that detects a phase sequence of voltage signals, a phase sequence detection unit that detects a phase sequence of current signals, a collation unit that collates the phase sequence of the voltage signals and the phase sequence of the current signals and determines that a connection error is present when the phase sequences are different, phase difference detection units that detect a phase difference between the voltage signal and the current signal, and a phase difference determination unit that determines, when the phase differences output from the phase difference detection units fall without a determination range, that a connection error is present.

Abstract: A target pole-close timing determining unit corrects a breaker characteristic correction signal of a preceding turn-on phase by using a correction amount which is proportional to an absolute value of the interpolar voltage upon turn-on of the proceeding turn-on phase, and a correction amount which is proportional to an elapsed time after a target pole-close timing of the preceding turn-on phase, to generate a subsequent phase interpolar voltage signal, and determines a target pole-close timing of the subsequent turn-on phase at a timing when the subsequent phase interpolar voltage signal is equal to or smaller than a threshold value.

Abstract: An inrush-current suppressing device includes a residual-magnetic-flux calculation unit that obtains a residual magnetic flux generated within a three-phase transformer, an input magnetic-flux-error calculation unit that obtains a closing-phase input magnetic-flux error, a closing-order determination unit that determines a closing order of phases of a three-phase breaker, a target-closing-phase/time setting unit that sets a time from a reference point to a target closing phase of a first closing phase as a first target closing time, and sets a time obtained by adding up a time from the reference point to a target closing phase of a second closing phase and a delay time set to exclude a period in which a magnetic flux in the first closing phase possibly saturates as a second target closing time, and a closing control unit that generates and outputs a closing control signal to close each phase at the target closing time.

Abstract: A chemically strengthened glass sheet, which has front and back main surfaces and an edge surface between the front and back main surfaces, has undergone a chemical strengthening treatment and has an approximately rectangular shape, in which the chemically strengthened glass sheet has a surface compressive stress of 800 MPa or more, and an internal tensile stress of 42 MPa or less.

Abstract: To obtain a vehicular seat with which the expansion and deployment of expanding portions can be completed in a short amount of time. A vehicular seat has: a seat cushion; a first expanding portion that is provided in the seat cushion on one side thereof with respect to a seat width direction center and which, upon receiving a supply of gas, is expanded and deployed; a second expanding portion that is provided in the seat cushion on the other side thereof with respect to the seat width direction center and which, upon receiving a supply of gas, is expanded and deployed in such a way as to oppose the first expanding portion across a central space portion in the seat width direction; and gas supplying device which, when actuated at the time of a frontal impact of the vehicle, supplies gas to the first expanding portion and second expanding portion.

Abstract: A float glass, which is produced by a float process, has a bottom surface to contact a molten metal during forming and a top surface facing the bottom surface, and is capable of having, after chemical strengthening, a surface compressive stress of 600 MPa or more and a depth of a compressive stress layer of 15 ?m or more from a surface thereof. Before chemical strengthening, a difference obtained by subtracting a surface compressive stress value ?CB in the bottom surface from a surface compressive stress value ?CT in the top surface is ?0.6 MPa or more and 0.25 MPa or less.

Abstract: Provided is a technique capable of accurately calculating the radiation power of an object to be measured using a spheroidal coupler even when there is a non-negligible loss in a measurement system. A phase rotating unit including a variable phase shifter, a two-branch circuit, and a reflective element that is connected to one of the branched outputs of the two-branch circuit is inserted between a receiving antenna and a power measuring device. The maximum value and the minimum value of power measured by a power measuring device when the variable phase shifter changes a phase are calculated. An output reflection coefficient of a coupler is calculated from the ratio of the maximum value to the minimum value, and an input reflection coefficient of an object to be measured which is approximate to the output reflection coefficient is estimated. In addition, an input reflection coefficient of a reference antenna which is used instead of the object to be measured is estimated in the same way.

Abstract: An inrush-current suppressing device includes a residual-magnetic-flux calculation unit that obtains a residual magnetic flux generated within a three-phase transformer, an input magnetic-flux-error calculation unit that obtains a closing-phase input magnetic-flux error, a closing-order determination unit that determines a closing order of phases of a three-phase breaker, a target-closing-phase/time setting unit that sets a time from a reference point to a target closing phase of a first closing phase as a first target closing time, and sets a time obtained by adding up a time from the reference point to a target closing phase of a second closing phase and a delay time set to exclude a period in which a magnetic flux in the first closing phase possibly saturates as a second target closing time, and a closing control unit that generates and outputs a closing control signal to close each phase at the target closing time.

Abstract: Provided is a technique capable of accurately calculating the radiation power of an object to be measured using a spheroidal coupler even when there is a non-negligible loss in a measurement system. A phase rotating unit including a variable phase shifter, a two-branch circuit, and a reflective element that is connected to one of the branched outputs of the two-branch circuit is inserted between a receiving antenna and a power measuring device. The maximum value and the minimum value of power measured by a power measuring device when the variable phase shifter changes a phase are calculated. An output reflection coefficient of a coupler is calculated from the ratio of the maximum value to the minimum value, and an input reflection coefficient of an object to be measured which is approximate to the output reflection coefficient is estimated. In addition, an input reflection coefficient of a reference antenna which is used instead of the object to be measured is estimated in the same way.

Abstract: A container holder includes a holder body, a supporting member, an actuator, and a switch. The supporting member is disposed movably to the holder body. The holder body demarcates an accommodation space for accommodating or holding a container therein partially. The actuator includes a first actuating unit, being made of a ferromagnet, and a second actuating unit, being made of an electromagnet. Moreover, one of the actuator's first actuating unit and second actuating unit is fixed to the holder body, and the other one of the actuator's first actuating unit and second actuating unit is fixed to the supporting member. The switch turns on and off the actuator's second actuating unit to have the electromagnet produce and lose an electromagnetic force. The resulting electromagnetic force moves the supporting member to come in and/or come out of the holder body's accommodation space.

Abstract: To provide a reverse conducting semiconductor device in which an insulated gate bipolar transistor and a free wheeling diode excellent in recovery characteristic are monolithically formed on a substrate, the free wheeling diode including; a second conductive type base layer to constitute the insulated gate bipolar transistor; a first conductive type base layer for constituting the insulated gate bipolar transistor, an anode electrode which is an emitter electrode covering a first conductive type emitter layer and the second conductive type base layer, a cathode electrode which is a collector electrode covering the first conductive type base layer and a second conductive type collector layer formed on the part of the first conductive type base layer, wherein a short lifetime region is formed on a part of the first conductive type base layer.

Abstract: A container holder includes a holder body, a supporting member, an actuator, and a switch. The supporting member is disposed movably to the holder body. The holder body demarcates an accommodation space for accommodating or holding a container therein partially. The actuator includes a first actuating unit, being made of a ferromagnet, and a second actuating unit, being made of an electromagnet. Moreover, one of the actuator's first actuating unit and second actuating unit is fixed to the holder body, and the other one of the actuator's first actuating unit and second actuating unit is fixed to the supporting member. The switch turns on and off the actuator's second actuating unit to have the electromagnet produce and lose an electromagnetic force. The resulting electromagnetic force moves the supporting member to come in and/or come out of the holder body's accommodation space.

Abstract: To provide a reverse conducting semiconductor device in which an insulated gate bipolar transistor and a free wheeling diode excellent in recovery characteristic are monolithically formed on a substrate, the free wheeling diode including; a second conductive type base layer to constitute the insulated gate bipolar transistor; a first conductive type base layer for constituting the insulated gate bipolar transistor, an anode electrode which is an emitter electrode covering a first conductive type emitter layer and the second conductive type base layer, a cathode electrode which is a collector electrode covering the first conductive type base layer and a second conductive type collector layer formed on the part of the first conductive type base layer, wherein a short lifetime region is formed on a part of the first conductive type base layer.