Hitachi, Ltd.

Hitachi Transport System, Ltd.

Akira Yonekawa

Akihiko Kanouda

Yuki Kawaguchi

Takae Shimada

Yasuaki Norimatsu

Yuuichi Mabuchi

Koji Ara

Mitsuhiro Kadota

Kazumichi Yamamoto

Masao Ishiguro

Mizuki Nakahara

Daichi Ojiro

Yoshihito Shimazu

Junichi Hirayama

Shigeki Higashijima

Naofumi Tomita

A logistics prediction system includes an arithmetic device that executes a predetermined process, a storage device connected to the arithmetic device, a shipment information input section to which past shipment information is input, a constraint input section to which a calculation resource and a calculation time period are input as constraints for prediction, an integration prediction database holding shipment trends of products, a prediction method selector that selects a prediction method to be used to predict a shipment volume for each of the products from among multiple prediction methods so that the constraints input to the constraint input section are satisfied, multiple prediction method sections that predict shipment volumes using the prediction methods, an integrator that integrates the results of the prediction by the prediction method sections for each of the products, and a shipment prediction output section that outputs the result of the integration by the integrator.

Logistics prediction system and prediction method

In a power conversion device, a power conversion unit includes a single-phase inverter on a secondary side of a resonant type converter that has an input of a direct current. A power conversion unit group is configured by connecting outputs of the single-phase inverters of a plurality of power conversion units in series. Respective phases of three phase alternate current are formed with the three power conversion unit groups housed in a power conversion device housing. The plurality of power conversion units constituting the power conversion unit group are disposed along a longitudinal direction of the power conversion device housing. The respective three power conversion unit groups are disposed at an upper stage, a middle stage, and a lower stage in a height direction of the power conversion device housing. The power conversion device housing has one end side in the longitudinal direction as output terminals of the three power conversion unit groups. The power conversion device housing has the other end side in the longitudinal direction where terminals of the three power conversion unit groups are connected in common.

Power conversion device, cooling structure, power conversion system, and power supply device

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Tokyo, Japan

Akira Yonekawa