Abstract: A rotary electric machine includes a bearing that holds a rotation shaft and is capable of rotating the rotation shaft, a housing accommodating the bearing, a rotor that is fixed to the rotation shaft and rotates, and a stator that is fixed to the housing. The stator includes a stator core including a tooth portion protruding toward the rotor and extending along the rotation shaft, a winding wound around the stator core, and magnetic detectors attached to an end portion of the stator core in a direction in which the rotation shaft extends while being separated from each other in a rotation direction of the rotation shaft.

Abstract: A motor includes an outer frame that extends in a tubular shape, a stator that is fixed inside the outer frame, wall portions that are provided integrally with the outer frame, that protrude in a wall shape from an outer surface of the outer frame, and that extend in a direction in which the outer frame extends, a connection portion that connects the wall portions to define an integral protrusion body, and windings that are wound around the stator in a distributed manner, and in which a jumper wire straddles a nearest neighbor location of an entire circumference of a core of the stator at a center of the integral protrusion body.

Abstract: To provide a data collection system, a data collection method, and a controller capable of transmitting measured data with appropriate timing while reducing load on a controller and a network. A controller comprises: a data acquisition unit that acquires measured data about a machine in chronological order; a timing control unit that buffers the measured data and controls timing of transmitting the measured data to a server based on a transmission condition; a data transmission unit, in response to instruction by the timing control unit, the data transmission unit transmitting the measured data to the server having been buffered until the instruction is given; and a transmission condition acquisition unit that receives the transmission condition decided by the server in response to a degree of state abnormality occurring during control determined based on the transmitted measured data.

Abstract: To provide a data collection system, a data collection method, and a controller capable of transmitting measured data with appropriate timing while reducing load on a controller and a network. A controller comprises: a data acquisition unit that acquires measured data about a machine in chronological order; a timing control unit that buffers the measured data and controls timing of transmitting the measured data to a server based on a transmission condition; a data transmission unit, in response to instruction by the timing control unit, the data transmission unit transmitting the measured data to the server having been buffered until the instruction is given; and a transmission condition acquisition unit that receives the transmission condition decided by the server in response to a degree of state abnormality occurring during control determined based on the transmitted measured data.

Abstract: A hair dryer includes a fan motor, a heater unit, and a body case arranged to cover the fan motor and the heater unit, and arranged to extend in a front-rear direction around a central axis. The fan motor includes an impeller arranged to rotate about the central axis, and a motor arranged to rotate the impeller. The body case includes an intake case portion including an air inlet, a discharge case portion including an air outlet, and an admission case portion arranged between the air inlet and the air outlet, and including an admission inlet. The intake case portion includes a suction tube portion arranged to extend toward the admission inlet. The intake case portion and the admission case portion are arranged to together define an expansion chamber arranged between the admission inlet and the air inlet and radially outside of the suction tube portion and the admission inlet.

Abstract: A rotating portion of a motor includes magnets and a rotor core that holds the magnets in holding holes. Each of the magnets includes a first magnet element and two second magnet elements. The two second magnet elements are located on opposite circumferential sides of the first magnet element, and a coercivity of the two second magnet elements is smaller than the first magnet element. The rotor core includes a flux barrier including a void located on a radially inner side of the first magnet elements. A width of the magnets in a direction perpendicular or substantially perpendicular to a radial direction passing through a center of the corresponding first magnet element is larger than a width in the same direction of the corresponding flux barrier within a plane perpendicular or substantially perpendicular to the center axis.

Abstract: A hair dryer includes a fan motor, a heater unit, and a body case arranged to cover the fan motor and the heater unit, and arranged to extend in a front-rear direction around a central axis. The fan motor includes an impeller arranged to rotate about the central axis, and a motor arranged to rotate the impeller. The body case includes an intake case portion including an air inlet, a discharge case portion including an air outlet, and an admission case portion arranged between the air inlet and the air outlet, and including an admission inlet. The intake case portion includes a suction tube portion arranged to extend toward the admission inlet. The intake case portion and the admission case portion are arranged to together define an expansion chamber arranged between the admission inlet and the air inlet and radially outside of the suction tube portion and the admission inlet.

Abstract: According to an embodiment, a liquid cooled electric motor includes a case; a rotator including a rotation shaft and a rotator core secured to the rotation shaft; a stator opposed to an outer circumference of the rotator core; a cooling portion provided around a stator core and configured to allow a liquid coolant to flow therein; a ventilation duct provided on an outer side of the case and configured to communicate first opening and second opening of the case with each other; a rotator fan mounted on the rotation shaft to be rotatable with the rotation shaft; a heat exchanger provided in the ventilation duct; and a cooling system configured to supply the liquid coolant to the cooling portion and the heat exchanger.

Abstract: A rotating portion of a motor includes magnets and a rotor core that holds the magnets in holding holes. Each of the magnets includes a first magnet element and two second magnet elements. The two second magnet elements are located on opposite circumferential sides of the first magnet element, and a coercivity of the two second magnet elements is smaller than the first magnet element. The rotor core includes a flux barrier including a void located on a radially inner side of the first magnet elements. A width of the magnets in a direction perpendicular or substantially perpendicular to a radial direction passing through a center of the corresponding first magnet element is larger than a width in the same direction of the corresponding flux barrier within a plane perpendicular or substantially perpendicular to the center axis.

Abstract: A wind power generation system 10 of an embodiment includes a rotor 40 having a hub 41 and blades 42, a nacelle 31 pivotally supporting the rotor 40, a tower 30 supporting the nacelle 31, an airflow generation device 60 provided in a leading edge of each of the blades 42 and having a first electrode 61 and a second electrode 62 which are separated via a dielectric, and a discharge power supply 65 capable of applying a voltage between the electrodes of the airflow generation device 60. Further, the system includes a measurement device detecting information related to at least one of output in the wind power generation system 10, torque in the rotor 40 and a rotation speed of the blades 42, and a control unit 110 controlling the discharge power supply 65 based on an output from the measurement device.

Abstract: A rotating electrical machine includes a stator and a rotor both accommodate in a frame, on which is mounted a control case to house a drive unit including an inverter. In the machine, the control case has a vibration suppression structure that suppresses vibration of the control case. The vibration suppression structure includes honeycombed ribs formed integrally with a wall surface of the control case.

Abstract: A wind power generation system 10 of an embodiment includes a rotor 40 having blades 42, an airflow generation device 60 provided in a leading edge of each of the blades 42 and having a first electrode 61 and a second electrode 62 which are separated via a dielectric, a discharge power supply 65 applying a voltage between the electrodes of the airflow generation device 60, and a control unit 110 controlling the discharge power supply 65. The control unit 110 controls the voltage to perform pulse modulation so that the value of a relational expression fC/U is 0.1 or larger and 9 or smaller where f is a pulse modulation frequency of the voltage, C is a chord length of the blades 42, and U is a relative velocity combining a peripheral velocity of the blades 42 and a wind velocity, so as to generate plasma induced flow.

Abstract: According to one embodiment, a vehicle drive apparatus configured to drive a vehicle includes a motor arranged on a bogie to drive a wheel, a cooling fan arranged to be rotatable integrally with a rotational shaft of the motor to cool the motor, a control device arranged under a floor of the body to face the bogie and configured to supply an electric power to the motor and control the motor, and a ventilation duct arranged between the motor and the control device and configured to guide a cooling wind blown by the cooling fan into the control device.

Abstract: An electric motor is disclosed that includes a first electric motor frame; a second electric motor frame positioned outside the first electric motor frame; a first ventilation path between the first frame and the second frame; and a first ventilation path fan installed within the first ventilation path. The first ventilation path fan can be integral with a shaft of the electric motor. The first ventilation path can be at least partially defined by the first and second electric motor frame. The electric motor of Claim 1 further comprising a control apparatus attached outside of the second frame. The electric motor can also include a second ventilation path between the control apparatus and the second frame wherein the second ventilation path is in communication with the first ventilation path. The electric motor can also include a second ventilation path fan located in the second ventilation path.

Abstract: A rotating electrical machine has a stator and a rotor both accommodated in a frame, on which is mounted a control case to house a drive unit including an inverter. In the machine, the control case has a vibration suppression structure that suppresses vibration of the control case or adjusts a natural vibration frequency of the control case.

Abstract: A wind power generation system 10 of an embodiment includes a rotor 40 having a hub 41 and blades 42, a nacelle 31 pivotally supporting the rotor 40, a tower 30 supporting the nacelle 31, an airflow generation device 60 provided in a leading edge of each of the blades 42 and having a first electrode 61 and a second electrode 62 which are separated via a dielectric, and a discharge power supply 65 capable of applying a voltage between the electrodes of the airflow generation device 60. Further, the system includes a measurement device detecting information related to at least one of output in the wind power generation system 10, torque in the rotor 40 and a rotation speed of the blades 42, and a control unit 110 controlling the discharge power supply 65 based on an output from the measurement device.

Abstract: A wind power generation system 10 of an embodiment includes a rotor 40 having blades 42, an airflow generation device 60 provided in a leading edge of each of the blades 42 and having a first electrode 61 and a second electrode 62 which are separated via a dielectric, a discharge power supply 65 applying a voltage between the electrodes of the airflow generation device 60, and a control unit 110 controlling the discharge power supply 65. The control unit 110 controls the voltage to perform pulse modulation so that the value of a relational expression fC/U is 0.1 or larger and 9 or smaller where f is a pulse modulation frequency of the voltage, C is a chord length of the blades 42, and U is a relative velocity combining a peripheral velocity of the blades 42 and a wind velocity, so as to generate plasma induced flow.

Abstract: A behavioral synthesis system has a scheduling unit and a mode control unit. The scheduling unit performs scheduling of a behavioral level description with reference to a resource quantity data indicating resource constraint and a resource delay data indicating delay times of respective resources. A single process described in the behavioral level description is divided into a plurality of description blocks, and a scheduling mode among a plurality of scheduling modes is designated with respect to each of the plurality of description block. The mode control unit refers to a mode designation code that indicates the designated scheduling mode and controls such that the scheduling unit performs the scheduling with respect to each description block in accordance with the designated scheduling mode indicated by the mode designation code.

Abstract: A motor drive system 10-1 for a railway vehicle is capable of reducing the weight of wiring, electromagnetic noise, and manufacturing cost. The motor drive system includes an inverter 11. The inverter is configured to control a motor 13-1 and is divided into at least two separate inverter units that are arranged integrally with the motor.

Abstract: According to one embodiment, a vehicle drive apparatus configured to drive a vehicle includes a motor arranged on a bogie to drive a wheel, a cooling fan arranged to be rotatable integrally with a rotational shaft of the motor to cool the motor, a control device arranged under a floor of the body to face the bogie and configured to supply an electric power to the motor and control the motor, and a ventilation duct arranged between the motor and the control device and configured to guide a cooling wind blown by the cooling fan into the control device.