Mitsubishi Electric Corporation

Astellas Pharma Gmbh

Ryuichi Takezawa

Tsukasa Ishihara

Kazuhiro Ikegai

Hiroyuki Hisamichi

Ikumi Kuriwaki

Nobuaki Takeshita

Masanori Kato

Shinya Nakagawa

Shuta Ishikawa

Kotaro Ono

Hitoshi Doihara

Shizuri Tamura

Jotaro Suzuki

Kumi Aoki

Shunichi Nishimura

Hiroyuki Ito

Shotaro Marumoto

A power conversion device includes a cooling fan, a cooling fan control unit that controls the drive amount of the cooling fan, and an electrolytic capacitor whose life varies according to the drive amount of the cooling fan. The cooling fan control unit controls the drive amount based on the relationship between the drive amount, the life of the cooling fan, and the life of the electrolytic capacitor.

Electronic device, control system for power conversion device, machine learning device, and method of controlling cooling fan

A power conversion device includes a high-pass filter for extracting an AC component of voltage Vdc of a DC link section, a multiplier for multiplying output VdcAC of the high-pass filter by a first gain K1 and outputting the result, a multiplier for multiplying output of the multiplier by a second gain K2 and outputting the result as a d-axis voltage correction signal vdcmp*, and a multiplier for multiplying output of the multiplier by a third gain K3 and outputting the result as a q-axis voltage correction signal vqcmp*. The gate signal generation section generates gate signals on the basis of a signal vdobtained by adding the d-axis voltage correction signal vdcmp* to a d-axis voltage command value vd* and a signal vqobtained by adding the q-axis voltage correction signal vqcmp* to a q-axis voltage command value vq*.

Power conversion device

An electronic apparatus includes heat generating components accommodated in a sealed housing section of a housing, an internal-side heat exchanger and an external-side heat exchanger on opposing sides of a wall of the housing, an external-side heat exchanger for heat generating components for heat exchange between the heat generating components and air outside the housing section, and an internal fan. A high-heat generating component generating the most heat contacts the inner surface and opposed to the external-side heat exchanger for heat generating components. Heat exchange between the high-heat generating component and air outside the housing section is effected via the external-side heat exchanger for heat generating components. Heat exchange between air inside the housing section and air outside the housing section is effected via the internal-side heat exchanger and the external-side heat exchanger.

Electronic apparatus

The present invention provides an inrush current suppression circuit that is provided in an electric power conversion apparatus and suppresses inrush current that occurs when power is turned on, the electric power conversion apparatus including an inverter circuit and a drive power circuit that generates direct voltages of two levels as drive voltages, wherein the inrush current suppression circuit includes: an inrush current prevention resistor disposed between a converter circuit that generates DC power to be supplied to the inverter circuit and a smoothing circuit; a relay connected in parallel to the inrush current prevention resistor; and a relay control circuit that applies to the relay a higher direct voltage to shift the relay to a closed state, and after the relay is set to the closed state, applies to the relay a lower direct voltage to retain the closed state.

Inrush current suppression circuit

A method for preventing or treating a disease selected from the group consisting of visceral pain, inflammatory pain, osteoarthritis pain, neuropathic pain, and fibromyalgia in a subject in need thereof, comprising administering to said subject an effective amount of the compound of the following formula (I) or a salt thereof: wherein R, R, R, R, R, X and n are as described herein.

Benzothiophene compound

An inverter device includes a rectifier circuit that rectifies alternating-current power supplied from a main power supply and generates direct-current power, a control power supply circuit that generates direct-current power for control using at least one of the generated direct-current power and direct-current power supplied from an external power supply, and a control unit that receives the generated direct-current power for control and performs a predetermined control operation. The control power supply circuit includes an insulation transformer including a primary side and second side winding wires, a first control power supply capacitor connected to the secondary side winding wire via a first diode, an external power supply capacitor connected to the first control power supply capacitor via a second diode and connected to a terminal, to which the external power supply is connected, via a third diode, and a second control power supply capacitor connected to the external power supply capacitor.

Inverter device

The present invention is directed to compounds of Formula I: 

A power supply device generating source powers to be outputted to an inverter and external supply destinations includes: a first power supply transformer including a first primary winding and a plurality of first secondary windings wound on an outer side of the first primary winding; and a second power supply transformer including a second primary winding electrically connected to one of the first secondary windings and a plurality of second secondary windings wound on an outer side of the second primary winding. The second secondary windings are connected to the external supply destinations. The first secondary windings include an upper gate winding connected to an upper-gate power supply circuit for switching on and off a switching element of an upper arm of the inverter, and the upper gate winding is wound on an outermost side to be separated away from the one of the first secondary windings.

Power supply device

N-(1H-tetrazol-5-yl)-1-phenoxy-4H-quinolizin-4-one-3-carboxamide is effective for treating IBS. In addition, IBS may be effectively treated with N-(1H-tetrazol-5-yl)-1-phenoxy-4H-quinolizin-4-one-3-carboxamide when used concomitantly with at least one of various serotonin 5-HT3 receptor antagonists.

Growing community of inventors

Tokyo, Japan

Ryuichi Takezawa