Kyocera Corporation

Takanobu Nishigai

Takashi Miyake

Satoshi Kawaji

Junichi Ujii

Makoto Chishima

Ryo Goto

Masaya Kojima

Yuichi Moriyama

Ryo Noguchi

Yosuke Kajimura

Yoshiyuki Ban

Shinya Miyazaki

Keita Futagami

Rintaro Ando

A power storage system includes a plurality of power storage apparatuses and a control apparatus. The plurality of power storage apparatuses are connected in parallel to each other via respective switches. The control apparatus controls the switches, based on respective voltage values of the plurality of power storage apparatuses and respective resistance values of conductive paths of the plurality of power storage apparatuses. The control apparatus charges or discharges at least one of the plurality of power storage apparatuses.

Power storage system, control apparatus for power storage apparatus, and control method for controlling switches connected to the power storage apparatus

A power management server includes a receiver configured to receive an adjustment message for adjusting a supply-demand balance of a power system; a management unit configured to manage two or more apparatuses; a controller configured to determine individual adjusted power amounts each adjusted by a respective one of the two or more apparatuses and start timings at each of which a respective one of the two or more apparatuses starts power adjustment so that a total adjusted power amount requested via the adjustment message is adjusted; and a transmitter configured to transmit a control message including an information element specifying the individual adjusted power amounts and the start timings. The controller determines the start timings that are different from each other and each of which is for a respective one of the two or more apparatuses.

Power management server and power management method

A power supply system includes a coupling device including a power conversion device, and one or more power supply units. Each of the power supply units includes a distributed power supply, a first interface outputting DC power to the power conversion device, an individual converter converting the DC power to AC power, and a second interface outputting the AC power output from the individual converter. The power conversion device includes a coupling side converter that converts the direct current power output from the power supply units to AC power, and an interface for outputting the AC power output from the coupling side converter. The power supply system includes a controller for controlling at least one of a corresponding one of the power supply units or the power conversion device based on communication information obtained by communication between the corresponding one of the power supply units or the power conversion device.

Power supply system, coupling device, power supply unit, and control method

A fuel cell system includes fuel cell apparatuses and an external management apparatus. Each of the fuel cell apparatuses includes a controller that controls the fuel cell apparatus in any of multiple operating modes that include a master mode and a slave mode. The external management apparatus acquires the power consumption of the load, generates control information for controlling an operation state of the fuel cell apparatuses on the basis of the power consumption, and transmits the control information to a fuel cell apparatus operating in master mode. This apparatus controls its own operation state and the operation state of the other fuel cell apparatuses on the basis of the received control information.

Fuel cell system, external management apparatus, fuel cell apparatus, and control method for fuel cell apparatus

Each fuel cell apparatus among a plurality of fuel cell apparatuses is caused to transmit, as distinguishing information, at least one of a cumulative operating time and a rated power of the respective fuel cell apparatus to other fuel cell apparatuses. Each fuel cell apparatus is caused to receive distinguishing information transmitted by other fuel cell apparatuses. Each fuel cell is caused to select a fuel cell apparatus among the plurality of fuel cell apparatuses to be a master apparatus on the basis the distinguishing information of the respective fuel cell apparatus and the distinguishing information received from other fuel cell apparatuses.

Fuel cell apparatus, fuel cell system, and control method

This power control system () includes a power generation apparatus () that generates, while a current sensor () detects forward power flow equal to or greater than a threshold, power corresponding to a value detected by the current sensor, and a power control apparatus () that controls distributed power sources. The power control apparatus is connected to a dummy current output unit capable of supplying the current sensor with dummy current. The control method includes, in a state of constant current flowing to a load from the power generation apparatus and the power control apparatus for a predetermined time, a first step of the power control apparatus increasing the dummy current from the dummy current output unit stepwise, and after the first step, a second step of storing, as the threshold, a minimum of the forward power flow when output voltage of the power generation apparatus rises.

Control method for power control system, power control system, and power control apparatus

In a power conversion apparatus that has adopted a DC-linkage system, the connection to a load is switched depending on the output characteristics of the power-supply device, to thereby flexibly operate power supply from each power source. The disclosed power conversion apparatus includes: a plurality of connection terminals for connecting the DC power-supply devices; a plurality of voltage transducers connected in series to the plurality of connection terminals; a plurality of DC power output lines electrically independent from one another; a switch for selectively connecting the plurality of voltage transducers and the plurality of DC power output lines with each other; and a controller for controlling the switch, according to the operating state of at least either the plurality of DC power-supply devices or loads connected to the plurality of DC power output lines.

Power conversion apparatus, method for controlling power conversion apparatus, and power conversion system

Provided is a determination apparatus and determination method for automatically determining the types of power-supply devices connected, in a power conversion apparatus employing a DC link. The determination apparatus includes: a plurality of connectors that may be connected with the plurality of power-supply devices; a plurality of voltage transducers connected in series with the plurality of connectors; a voltage measuring part configured to measure output voltage values having passed through the plurality of voltage transducers; and a controller determining the plurality of power-supply devices, based on the output voltage values measured by the voltage measuring part when the plurality of voltage transducers have the same step-up ratio, to thereby automatically determine the power-supply devices connected thereto.

Power-supply device determination apparatus, power-supply device determination method, and power conversion apparatus

An energy management apparatus capable of taking an appropriate measure in the event of a power failure and a method of controlling the energy management system will be provided. A storage medium, a power input unitfor receiving power supply, a backup power sourcefor supplying power when power supply to the power input unitfrom a grid power sourcestops, and a control unit, when the power supply to the power input unitfrom the grid power sourcestops for a period equal to or longer than a predetermined period, for carrying out a suspension processing of the storage mediumare provided.

Energy management apparatus and method of controlling the same

The electronic device includes a control unitconfigured to set in stages a plurality of thresholds which relate to the data based on press and cause a predetermined processing to be executed. The control unitsets the thresholds such that, as the data based on press increases, the difference between thresholds gradually decreases.

Electronic device

The portable terminal includes a receiving unit for selecting a channel and receiving a program, an obtaining unit for obtaining the program guide for each channel received by the receiving unit, a display unit for displaying the program guide obtained by the obtaining unit, a memory for storing setting information set up to view the program received by the receiving unit, a remaining battery capacity detecting unit for detecting the remaining capacity of the battery, and a control unit for determining the possible viewing time according to the operation mode stored in the memory and the remaining capacity of the battery detected by the remaining battery capacity detecting unit and controlling the display unit so as to identifiably display the possible viewing segment corresponding to the possible viewing time in the program guide.

Program guide display apparatus

A SIP serveraccording to a present invention includes: a judgment unitconfigured to specify an application executed by a mobile station transmitting INVITE (halfway participation) on the basis of INVITE (halfway participation) received from the mobile station, and to judge whether an application which is being executed in the group call (active application) matches the application executed by the mobile station transmitting INVITE (halfway participation); and a SIP information transmitterconfigured to notify the mobile station transmitting INVITE (halfway participation) of the active application when judged that the active application is different from the application executed by the mobile station transmitting INVITE (halfway participation).

Growing community of inventors

Hiratsuka, Japan

Takanobu Nishigai