Kabushiki Kaisha Toshiba

Toshiba Energy Systems & Solutions Corporation

Yasuhiro Ogura

Takahiro Yamamoto

Takenori Kobayashi

Kenichi Fujiwara

Kenji Mitsumoto

Hisaaki Hatano

Masatake Sakuma

Shinji Kobayashi

Mami Mizutani

Michihiko Inaba

Kaoru Koiwa

Hiromasa Shin

Mitsuru Kakimoto

Takaaki Murata

Tatsuya Hashimoto

Yoshiaki Shiga

Shunsuke Kawachi

Ichiro Yamanashi

Tsutomu Tanno

Shigeru Kawaguchi

Kenji Kawamata

Yuuji Okita

Ken Yabui

Sueo Ando

According to one embodiment, an evaluation device for an energy storage device includes first processing circuitry and second processing circuitry. The first processing circuitry acquires data items including an amount of charge and a voltage value measured in a measurement period from the energy storage device, the energy storage device being charge-discharge-controlled according to charge-discharge command values. The second processing circuitry generates a representative data item of voltage values for amounts of charge, based on the data items acquired for the measurement period; and evaluates a degradation state of the energy storage device, based on a relative change between a plurality of the representative data items corresponding to a plurality of the measurement periods.

Evaluation device, evaluation method and evaluation system for energy storage device

A power supply system includes a plurality of power conversion devices, a plurality of breakers, and a controller. The plurality of breakers are respectively connected to the plurality of power conversion devices and configured to perform switching of an electrical connection between the power conversion device and a power system, wherein the breaker switches an ON state and an OFF state. The controller is configured to control the breakers and switch connection states of the plurality of power conversion devices are switched, and the controller being configured to determine whether or not the connected breaker is in an ON state and electrically conducted to the power system and the number of the power conversion devices in a standby state reaches a predetermined number.

Power supply system and control device

According to one embodiment, a device for evaluating an energy storage device includes first processing circuitry and second processing circuitry. The first processing circuitry detects a plurality of times at which an amount of charge of the energy storage device satisfies a threshold condition, based on measurement data on the energy storage device in operation, selects a plurality of time intervals, calculates a charge-discharge efficiency in each of the time intervals based on charge-discharge command values belonging to the time interval, and divides a set of the charge-discharge efficiencies into a plurality of clusters and generates characteristic information on the clusters based on at least one of the measurement data and the charge-discharge command values. The second processing circuitry generates output data for displaying: transition data indicating transition of the charge-discharge efficiency belonging to the cluster; and characteristic information on the cluster.

Device and method for evaluating energy storage device and evaluation system

A power control apparatus has a peak cut prediction unit that predicts a period of time to impose a restriction on power supply from a power system to a consumer based on a predetermined condition, a threshold setting unit that sets a predetermined threshold such that a power supply amount from the power system to the consumer does not exceed the threshold in the period of time predicted by the peak cut prediction unit, and a charge/discharge control command unit that stops power supply from the power system to the consumer and causes a power storage device to be discharged by an amount of demand power exceeding the threshold when demand power of the consumer reaches the threshold in the period of time predicted by the peak cut prediction unit.

Power control apparatus, power control method, and recording medium

A pair of electrodes (,) are formed on one surface of a dielectric substrate (,). A dielectric layer (,) is formed on the surface of the dielectric substrate (,) so as to cover the pair of electrodes (,). The pair of electrodes (,) have linear electrode elements, respectively. The respective linear electrode elements are arrange at equal intervals.

Ozonizing unit ozone generator and ozone-processing system

Growing community of inventors

Yokohama, Japan

Yasuhiro Ogura