4584 patents
Page 20 of 230
Utility
Rotating machine power conversion device
1 Aug 23
A rotating machine power conversion device is obtained which achieves operational continuation in a rotational speed range in which the operational continuation is enabled, even when a single phase of an electrical power conversion device made of switching devices causes a disconnection or turn-off failure.
Takafumi Ichikawa, Yoshihiko Kimpara, Noriyuki Wada, Kotaro Nakano
Filed: 27 Apr 18
Utility
Electronic device
1 Aug 23
A electronic device includes: a plurality of substrates each including a substrate main body and a heat generating element, the plurality of substrates being provided side by side in a plate thickness direction; a cooler which is provided between the substrates adjacent to each other, and configured to cool the heat generating element; and a piping which is made of metal, and is connected to the cooler.
Koji Kise, Hiroaki Ishikawa, Takashi Moriyama, Yuki Sakata
Filed: 22 Apr 19
Utility
Board design assistance device, board design assistance method, and recording medium
1 Aug 23
A board design assistance device includes a design data acquirer to acquire design data for a printed circuit board, a first determiner to determine, based on the design data for the printed circuit board, whether a lengthwise direction of board fiber in the printed circuit board is perpendicular to a longitudinal direction of an electronic component mounted on the printed circuit board, a second determiner to determine, based on the design data for the printed circuit board, whether a wire is routed crosswise from a pad receiving the electronic component mounted on the printed circuit board, and a notifier to provide a notification including error information specifying an electronic component determined to have a longitudinal direction not perpendicular to the lengthwise direction of the board fiber and determined to be connected to a pad from which a wire is not routed crosswise.
Shinichiro Horiuchi, Toru Tateishi, Kohji Matsuura
Filed: 26 Oct 20
Utility
Driving support device
25 Jul 23
Provided is a driving support device configured to: generate a bird's-eye view image around an own vehicle from periphery images acquired from a plurality of periphery monitoring cameras, and generate a cropped bird's-eye view image by cropping an image of a cropping range including a blind spot range from the generated bird's-eye view image; generate a rear-lateral side converted image by converting a rear-lateral side direction image acquired from a rear-lateral side monitoring camera into an image in which left and right are inverted; and generate a combined image in which the generated cropped bird's-eye view image and the generated rear-lateral side converted image are arranged, and control a display device such that the generated combined image is displayed by the display device.
Takuya Taniguchi, Noritaka Kokido, Nariaki Takehara
Filed: 31 Jan 19
Utility
Obstacle avoidance apparatus and obstacle avoidance route generating apparatus
25 Jul 23
Provided is an obstacle avoidance apparatus that can specify a distance between a subject vehicle and an obstacle when making the subject vehicle avoid the obstacle.
Kenta Tominaga, Tomoki Uno, Shota Kameoka, Masaya Endo
Filed: 1 Aug 19
Utility
Machining apparatus and tool life estimation method
25 Jul 23
A machining apparatus includes encoders that detect first rotational positions of motors that respectively drive an unwind shaft and a take-up shaft for conveying a material, an encoder that detects a second rotational position of a motor that drives a cutter edge for cutting the material, and a controller that controls the motor based on the first rotational position and controls the motor based on the second rotational position to coordinately control conveyance of the material and movement of the cutter edge.
Takuya Sakaishi, Taishi Ando
Filed: 27 Apr 20
Utility
Motor drive apparatus
25 Jul 23
A motor drive apparatus includes: a dq-axis current controller converting phase current flowing through a synchronous motor into d-axis current and q-axis current, and controlling the phase current by determining a voltage command based on the d-axis current and a d-axis current command as well as the q-axis current and a q-axis current command; a voltage amplitude calculating unit obtaining voltage amplitude; a speed controller controlling rotational speed of the motor by determining the q-axis current command based on a speed command, the rotational speed, and a speed droop amount that reduces the speed command; a flux weakening controller performing flux control to limit amplitude of voltage output to the motor by determining the d-axis current command based on the voltage amplitude and a first voltage limit value; and a speed droop controller controlling the speed droop amount based on the voltage amplitude and a second voltage limit value.
Kenji Takahashi, Shinya Toyodome, Mitsuo Kashima, Tomohiro Kutsuki
Filed: 3 Dec 19
Utility
Motor driving apparatus and refrigeration cycle equipment
25 Jul 23
An inverter for driving a motor that has a switchable connection of windings and drives a load element having a periodically varying load torque is provided.
Shinya Toyodome, Kazunori Hatakeyama, Kenji Takahashi
Filed: 21 Feb 19
Utility
Drive circuit and inverter device
25 Jul 23
A drive circuit includes a first driver to control on/off of an upper arm, a second driver to control on/off of a lower arm, a first switching device including a first terminal connected with a power supply for the first driver, a second terminal connected with a power supply for the second driver and a control terminal, a booster circuit to turn on the first switching device by boosting a control signal which is at a high level when the lower arm is in an on state, a second switching device to cause continuity between the control terminal and the booster circuit when the control signal is at the high level, and first switch unit to short-circuit the control terminal and the terminal for grounding when the control signal is at the low level.
Shohei Sano, Akihisa Yamamoto, Mitsutaka Hano
Filed: 15 Apr 21
Utility
Electric-power conversion apparatus
25 Jul 23
Toru Miyake
Filed: 29 Dec 21
Utility
Power semiconductor module and power conversion apparatus including the same
25 Jul 23
A power semiconductor module includes at least one upper arm provided between a positive electrode line and a node and including a power semiconductor device and a freewheeling diode connected in parallel, at least one lower arm provided between a negative electrode line and the node and including a power semiconductor device and a freewheeling diode connected in parallel, and a snubber circuit provided between the positive electrode line and the negative electrode line.
Takeshi Horiguchi, Takayoshi Miki
Filed: 1 Nov 18
Utility
Electric power conversion control apparatus
25 Jul 23
An electric power conversion control apparatus includes: a first converter of the first electric power conversion control apparatus and a second converter of the second electric power conversion control apparatus, which feed electric power to a first winding wire and a second winding wire of a dual three-phase motor; a first controller and a second controller, which control the first converter and the second converter; a communication line, which is connected between the first controller and the second controller; and a fifth signal wire for deactivating the operation of the second converter, from the first controller.
Chiharu Morisaki
Filed: 27 Jan 22
Utility
Power conversion device
25 Jul 23
The power conversion device includes: a main circuit having first and second wiring layers formed respectively on both surfaces of a base board, mounted parts mounted on the first and second wiring layers, and first and second GND layers formed respectively, between external- and internal-layer portions of the base board and in regions corresponding to the mounted parts each being a mounted part which forms a circuit other than a circuit having an inductance component as a lumped constant, and to the first and second wiring layers; and a cooler attached to the base board by means of fixing screws through a first through-hole created in an end portion of the board; wherein the first and second GND layers are each formed so that creepage distance is created around a second through-hole in which a lead insertion part that mutually connects the first and second wiring layers is inserted.
Toshikazu Takagi
Filed: 22 Sep 20
Utility
Air conditioning control system and air conditioner
25 Jul 23
An air conditioning control system includes: an air pressure measurement unit (111) configured to measure an air pressure value; an air conditioning unit (136) whose wind direction and airflow volume are changeable; a wind velocity calculation unit (132) configured to calculate a wind velocity of wind received by a portable terminal (110) from a variation in a plurality of atmospheric pressure values and to specify a presence direction that is a direction in which the portable terminal (110) is present with respect to the air conditioner (130); an air conditioning control determination unit (134) configured to determine a wind direction and an airflow volume of the air conditioning unit (136) in accordance with the wind velocity and the presence direction; and an air conditioning control unit (135) configured to control the air conditioning unit (136) so that the determined wind direction and airflow volume are obtained.
Aki Kimura, Yuka Tsuda, Tetsuro Shida, Masataka Baba, Satoko Miki
Filed: 31 Jan 18
Utility
Air-conditioning apparatus
25 Jul 23
An air-conditioning apparatus according to the present disclosure includes a heat medium circulation circuit, a heat-source-side device, and a voltage drop device.
Koji Furuya, Kimitaka Kadowaki, Koji Azuma, Yuji Motomura, Yasushi Okoshi
Filed: 28 Sep 18
Utility
Laser radar device
25 Jul 23
A laser radar device includes: a modulator (8) for causing a transmission seed light beam to branch, and giving different offset frequencies to a plurality of the transmission seed light beams having branched, and then modulating the plurality of transmission seed light beams into pulsed light beams and outputting the pulsed light beams, or for modulating the transmission seed light beam into a pulsed light beam, causing the pulsed light beam to branch, and giving the different offset frequencies to a plurality of the pulsed light beams having branched, and then outputting the plurality of pulsed light beams; a band pass filter (14) in which a frequency band including frequencies of signal components included in a plurality of beat signals detected by an optical heterodyne receiver (13) is set as a pass band and a frequency band not including the frequencies of the signal components is set as a cutoff band; and an ADC (15) for sampling the beat signals passing through the band pass filter (14) at a sampling frequency.
Toshiyuki Ando, Eisuke Haraguchi, Hitomi Ono
Filed: 21 Dec 16
Utility
Semiconductor module
25 Jul 23
A semiconductor module includes a semiconductor element, a substrate on which the semiconductor module is mounted, a heat radiating plate on which the substrate is mounted, a resin case, and a first main current electrode and a second main current electrode, in which in the first main current electrode and the second main current electrode, one end of each thereof is joined to a circuit pattern on the substrate, an other end of each thereof is extended through and incorporated in a side wall of the resin case so as to project outward of the resin case, and each thereof has at least a portion of overlap at which a part thereof overlaps in parallel with each other with a gap therebetween, and each thereof has a slope portion provided between an external projection portion and an internal projection portion.
Ryo Goto, Yasutaka Shimizu
Filed: 16 Nov 21
Utility
Display apparatus
25 Jul 23
A display apparatus includes light-emitting elements configured to emit light in a screen, a louver fixed on the screen with a fastener, and a member disposed on a surface of the louver around the fastener and configured to reflect, in multiple directions, external light incident to a portion around the fastener or absorb the external light.
Kazuhiro Ioki, Hironobu Kawaguchi
Filed: 11 Sep 20
Utility
Heat conduction pattern for cooling a power module
25 Jul 23
A semiconductor module includes: a switching device including a gate pad; an output unit including an output pad connected with the gate pad of the switching device through a wire and outputting a drive signal from the output pad to the switching device; a temperature protection circuit detecting temperature and performing protection operation; and a heat conduction pattern connected with the output pad, extending from the output pad toward the temperature protection circuit, and conducting heat generated at the switching device to the temperature protection circuit.
Seiya Sugimachi, Kazufumi Oki
Filed: 9 Jul 21
Utility
Semiconductor module and power conversion device
25 Jul 23
The present application provides a semiconductor module and a power conversion device wherein wiring inductance is reduced.
Dai Yoshii, Hantaro Ozawa
Filed: 27 Oct 20