Abstract: A vibration monitoring device includes: a rotation sensor for outputting a rotation signal synchronized with rotation of a rotational shaft; an output device for outputting a filter command value corresponding to a rotation speed of the rotational shaft calculated from the rotation signal; and at least one filter for extracting, in response to input of the rotation signal and the filter command value, a signal in a passband set according to the filter command value from the rotation signal as a vibration signal from which vibration information of the rotational shaft can be obtained.

Abstract: A turbocharger includes: a bearing; a casing for accommodating the bearing; and a first thermometer including a first temperature sensor for measuring temperature of lubricant oil. The casing includes a lubricant oil discharge part having a lubricant oil outlet for discharging the lubricant oil from the turbocharger. The lubricant oil discharge part includes a lubricant oil storage part for storing the lubricant oil. The first temperature sensor is disposed in the lubricant oil storage part.

Abstract: A contact vibration detection device 100 for detecting contact vibration due to contact between a rotational shaft 12 and a stationary part 13 includes: a rotation waveform determination unit 101 configured to determine a rotation waveform of the rotational shaft 12 based on displacement of the rotational shaft 12 during rotation; a parameter change detection unit 102 configured to detect a change in a parameter of at least one of an effective value of the rotation waveform or a phase angle of the rotation waveform; and a contact vibration determination unit 103 configured to determine whether the contact vibration occurs based on presence or absence of the change in the parameter.

Abstract: Provided are: a composition for forming a hole transporting layer for perovskite solar cells, which is inexpensive and does not need to be used together with a dopant; and a compound which can be contained in a composition for forming a hole transporting layer.

Abstract: A turbocharger includes: a suction part (10b) configured to suction a fluid; an impeller (12) configured to compress the fluid supplied from the suction part (10b); a drive shaft (18) having one end to which the impeller (12) is attached; an intermediate shaft (16) provided at the one end of the drive shaft (18) such that the drive shaft (18) extends in an axial direction from a downstream side to an upstream side of the impeller (12); a motor (14) or a generator having a rotor (14a) attached to a distal end of the intermediate shaft (16) via a coupling (20a), a stator (14c) provided so as to correspond to the rotor (14a), and a body portion (14b) configured to hold the stator (14c); and a cover (30) formed into a tubular shape to surround the intermediate shaft (16) and the coupling (20a).

Abstract: A fuel cell system includes: a coolant circulation passage through which a coolant for cooling a fuel cell circulates; a pump that circulates the coolant; a radiation unit that cools the coolant by discharging heat from the coolant; a bypass passage connected to the coolant circulation passage so as to bypass the radiation unit; and an open/close valve that is provided in a convergence portion where low temperature coolant that has passed through the radiation unit and high temperature coolant that has passed through the bypass passage without passing through the radiation unit converge, and that opens when a temperature of the high temperature coolant reaches or exceeds a predetermined opening temperature, whereby the low temperature coolant and the high temperature coolant converge and are supplied thus to the fuel cell, wherein a basic discharge flow of the pump is calculated in accordance with a condition of the fuel cell, and when the temperature of the low temperature coolant is lower than a predetermin

Abstract: A fuel cell system includes a battery, a fuel cell configured to generate power in accordance with a load, an inverter configured to convert power output from the fuel cell into alternating-current power and supply the alternating-current power to a motor, and a converter configured to control voltage between the inverter and the fuel cell using power output from the battery. The fuel cell system includes a voltage control unit configured to control the converter such that the voltage between the inverter and the fuel cell does not fall below a voltage lower limit of the inverter, and a lower limit voltage control unit configured to, when power required by the motor increases, cause the voltage between the inverter and the fuel cell to fall below the voltage lower limit of the inverter.

Abstract: An turbocharger with an electric motor (30) includes a housing (33), stator (32), and motor rotor. The housing (33) has first stator fixing section (131) and a second stator fixing section (132) formed in an inner peripheral surface of the housing (33) that fixes the stator (32) in the housing. The stator (32) has a first fixed section (121) formed in an outer peripheral surface of the stator (32) fitted to the first stator fixing section (131) and a second fixed section (122) that has a smaller outer diameter than the first fixed section (121) fitted to the second stator fixing section (132) in an outer peripheral surface of the stator (32). A large clearance section having a space is formed between the inner peripheral surface of the housing and the outer peripheral surface of the stator. The instant invention allows precise positioning of the stator and improved heat conduction.

Abstract: A contact vibration detection device 100 for detecting contact vibration due to contact between a rotational shaft 12 and a stationary part 13 includes: a rotation waveform determination unit 101 configured to determine a rotation waveform of the rotational shaft 12 based on displacement of the rotational shaft 12 during rotation; a parameter change detection unit 102 configured to detect a change in a parameter of at least one of an effective value of the rotation waveform or a phase angle of the rotation waveform; and a contact vibration determination unit 103 configured to determine whether the contact vibration occurs based on presence or absence of the change in the parameter.

Abstract: A fuel cell stack obtained by stacking a plurality of fuel cells has an internal manifold that extends in a stacking direction of the fuel cells to externally discharge a gas used in the fuel cell, and an extension member that adjoins an inner wall surface of the internal manifold and extends in the stacking direction. The extension member is a bar-shaped member provided in an opposite side to a side where a gas from the fuel cells flows to the inside of the internal manifold and has a sloping surface making an acute angle with an inner-wall lower surface of the internal manifold.

Abstract: A method of suppressing shaft vibration of a turbocharger capable of being driven by a motor includes: a specific-vibration-state determination step of determining whether a rotor shaft of the turbocharger is in a specific vibration state in which a magnitude of shaft vibration of the rotor shaft is, or is likely to be, greater than a predetermined magnitude; an excited state determination step of determining whether the motor is in an excited state in which an exciting voltage is applied to the motor; and a vibration suppression execution step of applying the exciting voltage to the motor if it is determined that the rotor shaft is in the specific vibration state in the specific-vibration-state determination step and it is determined that the motor is not in the excited state in the excited state determination step.

Abstract: A cell system includes a laminated battery, a plurality of battery cells being laminated in the laminated battery, a first switch connected to a positive electrode of the laminated battery and configured to switch connection to the positive electrode to a shut-off state, and a second switch connected to a negative electrode of the laminated battery and configured to switch connection to the negative electrode to a shut-off state. Furthermore, the cell system includes a circuit to be connected at least either between the positive electrode and the first switch or between the negative electrode and the second switch; and a controller configured to shift control timings of the first switch and the second switch from the shut-off state to a connected state according to an electrical capacitance generated between the positive electrode and the negative electrode.

Abstract: An object of the present invention is to improve an assembling property while securing positioning precision of a stator, and heat conduction between the stator and a housing. A motor (30) includes: a housing (33); a stator (32); and a motor rotor, wherein the housing (33) includes: a first stator fixing section (131) that is formed in an inner peripheral surface of the housing (33), and fixes the stator (32); and a second stator fixing section (132) that has a smaller inner diameter than the first stator fixing section (131) in the inner peripheral surface of the housing (33), and the stator (32) includes: a first fixed section (121) that is formed in an outer peripheral surface of the stator (32), and is fitted to the first stator fixing section (131); and a second fixed section (122) that has a smaller outer diameter than the first fixed section (121), and that is fitted to the second stator fixing section (132), in the outer peripheral surface of the stator (32).

Abstract: A fuel cell system that generates electric power by supplying anode gas and cathode gas to a fuel cell includes a control valve adapted to control the pressure of the anode gas to be supplied to the fuel cell; a buffer unit adapted to store the anode-off gas to be discharged from the fuel cell; a pulsation operation unit adapted to control the control valve in order to periodically increase and decrease the pressure of the anode gas at a specific width of the pulsation; and a pulsation width correcting unit adapted to correct the width of the pulsation on the basis of the temperature of the buffer unit.

Abstract: A method of suppressing shaft vibration of a turbocharger capable of being driven by a motor includes: a specific-vibration-state determination step of determining whether a rotor shaft of the turbocharger is in a specific vibration state in which a magnitude of shaft vibration of the rotor shaft is, or is likely to be, greater than a predetermined magnitude; an excited state determination step of determining whether the motor is in an excited state in which an exciting voltage is applied to the motor; and a vibration suppression execution step of applying the exciting voltage to the motor if it is determined that the rotor shaft is in the specific vibration state in the specific-vibration-state determination step and it is determined that the motor is not in the excited state in the excited state determination step.

Abstract: A fuel cell system that generates electric power by supplying anode gas and cathode gas to a fuel cell includes a control valve adapted to control the pressure of the anode gas to be supplied to the fuel cell; a buffer unit adapted to store the anode-off gas to be discharged from the fuel cell; a pulsation operation unit adapted to control the control valve in order to periodically increase and decrease the pressure of the anode gas at a specific width of the pulsation; and a pulsation width correcting unit adapted to correct the width of the pulsation on the basis of the temperature of the buffer unit.

Abstract: An impedance measuring device outputs an alternating current of a prescribed frequency to a positive electrode terminal and a negative electrode terminal of the laminated type battery. The impedance measuring device detects an alternating-current potential difference between the positive electrode terminal and an intermediate-point terminal, and an alternating-current potential difference between the negative electrode terminal and the intermediate-point terminal. The impedance measuring device adjusts an amplitude of the alternating current such that the alternating-current potential difference between the positive electrode terminal and the intermediate-point terminal, and the alternating-current potential difference between the negative electrode terminal and the intermediate-point terminal coincide. The impedance measuring device computes an impedance of the laminated type battery on the basis of the alternating current adjusted and the alternating-current potential difference.

Abstract: A fuel cell system that generates electric power by supplying anode gas and cathode gas to a fuel cell includes a control valve adapted to control the pressure of the anode gas to be supplied to the fuel cell; a buffer unit adapted to store the anode-off gas to be discharged from the fuel cell; a pulsation operation unit adapted to control the control valve in order to periodically increase and decrease the pressure of the anode gas at a specific width of the pulsation; and a pulsation width correcting unit adapted to correct the width of the pulsation on the basis of the temperature of the buffer unit.

Abstract: An impedance measuring device outputs an alternating current of a prescribed frequency to each of a positive electrode terminal and a negative electrode terminal of a laminated type battery and detects an alternating-current potential difference between the positive electrode terminal and an intermediate-point terminal and an alternating-current potential difference between the negative electrode terminal and the intermediate-point terminal. The impedance measuring device adjusts an amplitude of the alternating current such that the alternating-current potential difference between the positive electrode terminal and the intermediate-point terminal and the alternating-current potential difference between the negative electrode terminal and the intermediate-point terminal coincide, and computes an impedance on the basis of the adjusted alternating current and alternating-current potential differences.

Abstract: A fuel cell system includes a battery, a fuel cell configured to generate power in accordance with a load, an inverter configured to convert power output from the fuel cell into alternating-current power and supply the alternating-current power to a motor, and a converter configured to control voltage between the inverter and the fuel cell using power output from the battery. The fuel cell system includes a voltage control unit configured to control the converter such that the voltage between the inverter and the fuel cell does not fall below a voltage lower limit of the inverter, and a lower limit voltage control unit configured to, when power required by the motor increases, cause the voltage between the inverter and the fuel cell to fall below the voltage lower limit of the inverter.