Abstract: A rotary electric machine includes: a rotor; a shaft that penetrates the rotor along a rotation axis and is pivotally supported by a bearing; a stator accommodating the rotor inside; a rotor cover attached to an axial end surface of the rotor; and a casing having a flow passage for supplying oil to the bearing. The rotor cover has an oil receiving portion that forms a concentric clearance with respect to the shaft and receives the oil from the bearing in the clearance, and an oil distribution passage that communicates with the axial end surface of the rotor from the oil receiving portion. The rotary electric machine supplies the oil guided to the clearance to the oil distribution passage by centrifugal force to cool the rotor.

Abstract: A vehicle inspection device for implementing a test on automatic braking performance of a test vehicle including an optical laser device for obstacle detection, in an inspection room three sides of which are surrounded by side walls, the vehicle inspection device comprising: a test instrument disposed at a side of the test vehicle; and a mirror unit that covers an upper face of the test instrument and upwardly guides light emitted from the optical laser device. The mirror unit may include a combination of a first plane mirror part disposed horizontally and a second plane mirror part disposed to be inclined.

Abstract: The disclosed vehicle drive device (10) includes: left and right motors (1,2) that drive left and right wheels of the vehicle; a gearbox (3) that is sandwiched between the left and right motors (1,2); and an inverter (4) that is arranged in a mounting space (S) over the left and right motors (1,2) and the gearbox (3). The gearbox (3) forms, in conjunction with respective motor housings (11,12) of the left and right motors (1,2), a depressed portion (8) depressed downward. The inverter (4) includes a cover (15) that is in a flat-plate shape, is attached to a tray unit (16), and covers the capacitor (5) and a semiconductor module (6) from above the capacitor (5) and the semiconductor module (6). The capacitor (5) is attached to a lower surface of the cover (15) and is arranged in the depressed portion (8). The semiconductor module (6) is attached to the lower surface of the cover (15) and is displaced from each of the capacitor (5) and the rotating shafts (C) of the motors (1,2) when seen from above.

Abstract: The disclosed vehicle drive device (10) includes: motor housings (11,12), a gearbox housing (13), an inverter case (14), and a PN line (9). The motor housings (11,12) form respective exteriors of a left motor (1) and a right motor (2) that drive left and right wheels of a vehicle with electric power of a battery. The gearbox housing (13) incorporates therein a gearbox (3) that amplifies torque of the left and right motors and that transmits the amplified torque to the left and right wheels, is sandwiched between the left and right motor housings (11,12), and is offset in a front-rear direction from the left and right motor housings (11,12). The inverter case (14) incorporates therein a pair of semiconductor modules (6,7) and is arranged above the left and right motor housings (11,12). The PN line (9) connects the battery to the semiconductor modules (6,7) from a lower surface side of the inverter case (14) so as to pass through a first space (41).

Abstract: A vehicle drive device (10) includes: a motor unit (1) that includes a motor for driving mounted on a vehicle and a gear mechanism that transmits torque of the motor to each of left and right wheels of the vehicle; and an inverter (4) that is arranged over the motor unit (1) and that includes a capacitor (5) smoothing electricity and a semiconductor module (6) including a plurality of switching elements, wherein the inverter (4) includes a tray unit (16) that accommodates the capacitor (5) and the semiconductor module (6), and a cover (15) that is in a flat-plate shape, is attached to the tray unit (16), and covers the capacitor (5) and the semiconductor module (6) from above the capacitor (5) and the semiconductor module (6), the cover(15) is integrated with a cooling unit (20) through which a coolant for cooling the inverter (4) flows, and the capacitor (5) and the semiconductor module (6) are attached to a lower surface (17) of the cover (15).

Abstract: An oxide film forming method for forming an oxide film on a film formation surface of a target workpiece is provided. The method includes utilizing an oxide film forming device which includes a chamber in which a target workpiece is removably placed; a gas supply unit arranged at a position opposed to the film formation surface of the target workpiece placed in the chamber; and a gas discharge unit arranged to discharge a gas inside the chamber by suction. The gas supply unit has nozzles for supplying of raw material gas, ozone gas and unsaturated hydrocarbon gas with supply ports thereof opposed to the film formation surface of the target workpiece away from the film formation surface. Raw material gas, ozone gas and unsaturated hydrocarbon gas supplied from the respective supply nozzles are mixed in a space between the supply ports and the film formation surface.

Abstract: A rotary electric machine includes: a rotor; a shaft that penetrates the rotor along a rotation axis and is pivotally supported by a bearing; a stator accommodating the rotor inside; a rotor cover attached to an axial end surface of the rotor; and a casing having a flow passage for supplying oil to the bearing. The rotor cover has an oil receiving portion that forms a concentric clearance with respect to the shaft and receives the oil from the bearing in the clearance, and an oil distribution passage that communicates with the axial end surface of the rotor from the oil receiving portion. The rotary electric machine supplies the oil guided to the clearance to the oil distribution passage by centrifugal force to cool the rotor.

Abstract: A rotary electric machine includes: a rotor; a shaft that penetrates the rotor along a rotation axis and is pivotally supported by a bearing; a stator that has a cylindrical shape, accommodates the rotor inside, and has a coil wound around an inner peripheral side; a rotor cover attached to an axial end surface of the rotor; and a casing having a flow passage for supplying oil to the bearing. The rotor cover has an oil receiving portion that forms a concentric clearance with respect to the shaft and receives the oil from the bearing in the clearance. The oil receiving portion has an injection port for injecting the oil guided to the clearance toward an inner periphery of the coil by centrifugal force.

Abstract: In the present invention, a jacking point 13 is formed, by casting, on a lower section of a housing 16 of an electric motor 11 mounted in a vehicle 10. A base section 13a of this jacking point 13 comprises: a jacking point surface 20 that is initially raised by a jack device; and side contact surfaces 22a-22d that are formed on the periphery of the jacking surface 20.

Abstract: An electrical device according to the present invention has a case (1), a metallic heat sink plate (4) disposed an opening portion (OP) of the case and a circuit board (5) arranged on the heat sink plate. The heat sink plate (4) is interposed between a capacitor (2) and the circuit board (5) so that the circuit board (5) is separated from the capacitor (2) by not only the resinous case (1) but also the metallic heat sink plate (4). Thus, electromagnetic space noise generated from the capacitor (2) is shielded or reduced by the metallic heat sink plate (4) whereby a malfunction of the circuit board (5) is prevented from occurring due to electromagnetic space noise generated from the capacitor (2).

Abstract: In an inverter device 1, a pair of bus bars P and N are disposed along each other between a smoothing capacitor 2 and a power semiconductor module 3 and are connected to the smoothing capacitor 2 and the power semiconductor module 3. A heat sink 5 is disposed between the bus bars P and N along the bus bars P and N. Insulating members 6 are disposed between the bus bar P and the heat sink 5 and between the bus bar N and the heat sink 5. A part of the heat sink 5 is connected to a case 4 on which the power semiconductor module 3 is mounted.

Abstract: A shaft configured to suppress damage without having an increased diameter is provided. The shaft includes a supported portion supported by a bearing and an adjacent large-diameter portion larger in diameter than the supported portion and disposed closer to a center in an axial direction than the supported portion. The shaft is configured to rotate integrally with a rotor while holding the rotor. A sectional shape of a boundary portion between the supported portion and the large-diameter portion in a longitudinal section of the shaft is an arc shape that is, on an outer side in the axial direction with respect to a virtual rising point, recessed inward from an outer edge in the radial direction of the supported portion and raised outward in the radial direction from the outer edge, as the arc shape extends from the outer to an inner side in the axial direction.

Abstract: A motor 1 includes a stator 3, a rotor 2, and a housing 52. The housing 52 includes a one-side space 52a, an other-side space 52b, a one-side communication hole 52c, and an other-side communication hole 52d. The one-side space 52a and the other-side space 52b communicate with each other via a gap G, the one-side communication hole is connected to a first airflow generator 64, and the other-side communication hole is connected to a second airflow generator 65. The motor 1 includes a forced inflow hole 52c1 connected to the first airflow generator 64 and a natural exhaust hole 52c2 through which air is naturally exhausted as the one-side communication hole, and includes a forced exhaust hole 52d1 connected to the second airflow generator 65 and a natural intake hole 52d2 through which air is naturally sucked into inside of the other-side space 52b as the other-side communication hole.

Abstract: Opening edge surface (45a) of an emitter supporting unit female screw bore (45) provided at an emitter supporting unit (4) extends along radial direction of the emitter supporting unit female screw bore (45). An emitter supporting unit operation hole (32) provided at a flange portion (30a) of a vacuum enclosure (11) has shape into which one selected from a position adjustment shaft (6) and a pressing shaft (9) can be inserted from their shaft tip sides. The position adjustment shaft is provided, on an outer circumferential surface of its tip (61), with a tip side male screw portion (61a) that can be screwed into the emitter supporting unit female screw bore (45). The pressing shaft has, at its tip (91), a tip surface (91a) having a larger diameter than an opening diameter of the emitter supporting unit female screw bore (45) and extending along radial direction of the pressing shaft.

Abstract: An elevator rope monitoring device, provided with: line sensor cameras 1a, 1b for imaging the entire circumference of the traveling elevator rope 5; a speed/position detecting device 4 for detecting the traveling speed and traveling position of the elevator rope 5; an image recording part 3a for inputting the image acquired by the line sensor cameras 1a, 1b in association with the traveling position of the elevator rope 5 detected by the speed/position detecting means 4; an image creating part 3b for creating an entire circumferential image of the elevator rope 5 from the image imaged by the line sensor cameras 1a, 1b; and an image processing part 3c for detecting an abnormality in the elevator rope 5 by analyzing the entire circumferential image.

Abstract: Between positive and negative electrode ends of battery 50, fuse 51, main contactor 52 and electrolytic capacitor C21 are connected in series. Between positive and negative electrode ends of electrolytic capacitor C21, inverter 54 in which upper phase side EFT (54U, 54V, 54W) and lower phase side FET (54X, 54Y, 54Z) are bridge-connected is connected. Resistor R1 for precharging electrolytic capacitor C21 is connected to main contactor 52 in parallel. The resistance value of resistor R1 is set so that in a precharging period until a key switch is turned on after battery 50 is connected, when the upper phase side FET is OFF-controlled and the lower phase side EFT is ON-controlled, the charge voltage value of electrolytic capacitor C21 is set to be able to limit a gate-source voltage of the upper phase side FET to a voltage at which the upper phase side FET is not turned on.

Abstract: A voltage drop Vzs is calculated based on an output current detection value Iac and a virtual synchronous impedance Zs or a corrected virtual synchronous impedance Zs?, and a value obtained by subtracting the voltage drop Vzs from an internal induced voltage Ef is output as a grid voltage command value Vac*. Zs calculation unit 7 limits an output current phase ? so that the output current phase ? is within an effective range by a phase limiter 12a, and calculates the corrected virtual synchronous impedance Zs? based on a limited output current phase ?, the internal induced voltage Ef, a grid voltage detection value Vac and a current limit value Ilim. Accordingly, in grid interconnection power conversion device that controls a virtual synchronous generator, it is possible to continue operation while suppressing an overcurrent and possess a synchronizing power generated by action or working of a virtual synchronous impedance.

Abstract: A pulse voltage generator calculates a corrected pulse voltage application time. The pulse voltage generator also outputs, for the duration of the corrected pulse voltage application time, a voltage vector closest to a rotor phase from among twelve voltage vectors as a voltage vector command. A current detector detects three-phase output currents of a power converter, which are obtained when first to sixth switching elements of the power converter are turned on or off on the basis of the voltage vector command. A three-phase/two-phase converter converts the three-phase output currents to two-phase output currents to output d-axis current. When the d-axis current after the corrected pulse voltage application time has elapsed becomes less than or equal to a demagnetization determination threshold value, a demagnetization determiner determines that demagnetization occurs in a permanent magnet of a rotor of a motor.

Abstract: In a vacuum container (1) of a vacuum interrupter (1A), an insulating cylindrical body (10) is sealed with a fixed-side flange (11a) on the fixed side in the axial direction, and is sealed with a movable-side flange (11b) on the movable side in the axial direction. In the fixed-side flange (11a) and the movable-side flange (11b), annular expansion portions (5a, 5b) are formed between middle portions (3a, 3b) and outer peripheral edge portions (4a, 4b), respectively. The annular expansion portions (5a, 5b) are respectively formed in annular shapes extending along the outer peripheries of the middle portions (3a, 3b), and in shapes expanding in the axial outer side direction of the vacuum container (1), such that an arch structural effect can be obtained.

Abstract: A vehicle system vibration suppression control device is provided for a vehicle system in which a vehicle is driven via an elastic shaft by a motor drive device having a torque control function. The vehicle system vibration suppression control device includes: a section containing an approximate model to which an output torque command is inputted; and a feedback control section. The feedback control section is configured to: employ the approximate model; calculate a motor-accelerating torque component by differentiating a measured speed component of a motor rotational speed; produce a compensation torque component by causing the motor-accelerating torque component to pass through a vibration suppression control filter; and calculate the output torque command by subtracting the compensation torque component from an input torque command. The vibration suppression control filter is expressed by a second order mathematical expression.