Nec Corporation

Yuma Iwasaki

Koji Kudo

Hisato Sakuma

Hitoshi Yano

Ryo Hashimoto

Eisuke Saneyoshi

Takahiro Toizumi

Masahiko Ishida

Akihiro Kirihara

Kazuhiko Aoki

Yoshiho Yanagita

Ryohto Sawada

Koichi Terashima

Hiroko Someya

Yasutomo Omori

Kosuke Homma

Sadanori Hattori

A heat-flow sensor that includes an insulating layer, a magnetic field application layer arranged on a first surface of the insulating layer and composed of a conductor, and a heat-flow detection layer arranged on a second surface of the insulating layer, the second surface facing the first surface, and the heat-flow detection layer composed of a conductive magnetic body. The heat-flow detection layer faces the magnetic field application layer via the insulating layer.

Heat-flow sensor

A portable power supply according to one or more embodiments includes a combustion device () and a heating container () that retains an object to be heated, wherein at least a part of a portion of the heating container, the portion being directly heated by the combustion device, is provided with a magnetic metal plate () that has spontaneous magnetization and that generates electromotive force due to an anomalous Nernst effect induced by the heating, and wherein electrodes () for drawing power are provided. Thus, the heating container for generating electricity has a simple configuration, and furthermore the portable power supply is provided with both the heating container and the combustion device.

Portable power supply

This invention prevents measurement error from becoming large in thermoelectric conversion coefficient evaluation and enhances evaluation efficiency. This invention is a physical property evaluation device for evaluating the physical properties of a plurality of solid materials formed on a substrate. The physical property evaluation device comprises an electromotive force measurement means that forms closed circuits including the individual solid materials and measures the electromotive forces occurring at the two ends of each of the solid materials, a means for producing heat flow within the individual solid materials, an external magnetic field generation means for generating a uniform magnetic field having a given intensity and direction in the vicinity of the individual solid materials, and an automation means for evaluating the physical properties of the individual solid materials using the electromotive force measurement means, heat flow production means, and external magnetic field generation means.

Physical property evaluation device

A thermoelectric conversion element that has a power generation layer containing an iron-aluminum based magnetic alloy material containing equal to or more than 70 weight percent of iron and aluminum in total. The power generation layer generates an electromotive force, due to an anomalous Nernst effect that develops in the magnetic alloy material in response to a temperature gradient applied thereto, in a direction intersecting both the magnetization direction of the magnetic alloy material and the direction of the applied temperature gradient.

Thermoelectric conversion element

Provided are an exterior body and an abnormality detector capable of suppressing bulking even when a heat generation detection function is provided. The exterior body of an electronic device generates heat during operation and is characterized by being provided with a magnetic body that is at least a portion of the exterior body, that has spontaneous magnetization, and that generates an electromotive force by exhibiting an abnormal Nernst effect through heat generation of the electronic device, wherein an electrode for extracting power is provided to the magnetic body.

Exterior body, abnormality detector, and abnormality detection system

[Problem] To provide a heat exchange device with which efficient electric power generation can be performed while transfer of a heat amount is maintained. [Solution] A heat exchange device comprising a heat exchange sectionand a magnetic body. The heat exchange sectionincludes a first heat transmission interfacein contact with a heat source, and a second heat transmission interfacein contact with a heat bath having a temperature different from that of the heat source. The magnetic bodyis interposed between the first heat transmission interfaceand the second heat transmission interfaceof the heat exchange section, and includes a magnetization component in a direction intersecting a heat flux produced between the first heat transmission interfaceand the second heat transmission interface

Heat exchange device, heat exchange system, and heat exchange method

Provided is a monitoring apparatus including an acquisition unit that acquires first time-series data which is time-series data of a measured value and/or a feature amount regarding an electrical device group, and a registration and updating unit that, when a difference in values between a pre-state-change data value which is any one of a data value at a first point in time in the first time-series data and a statistic of a plurality of data values from a point in time earlier than the first point in time by a predetermined period of time to the first point in time and a post-state-change data value which is any one of a data value at a second point in time later than the first point in time and a statistic of a plurality of data values from the second point in time to a point in time later than the second point in time by a predetermined period of time satisfies a predetermined condition, stores a feature amount extracted from any waveform data of a total current consumption, a total power consumption, and a total input voltage of the electrical device group corresponding to the pre-state-change data value and the post-state-change data value which satisfy the predetermined condition, in a feature amount storage unit.

Monitoring apparatus, monitoring method, and storage medium

A battery control device controlling an operation of a battery connected to a power system includes detection means that detects battery-related information that shows a state of the battery, or a voltage of an interconnection point of the power system and the battery, first communication means that transmits a detection result of the detection means to an external device, and receives operation control information to control the operation of the battery from the external device, and control means that controls the operation of the battery, based on a state of the power system and the operation control information received by the first communication means.

Battery control device, battery control support device, battery control system, battery control method, battery control support method, and recording medium

A supply-and-demand adjustment system, that utilizes characteristics of supply-and-demand adjustment apparatuses and precisely matches a total supply-and-demand adjustment amount with a required adjustment amount when performing a supply-and-demand adjustment. The supply-and-demand adjustment system comprises a central control apparatus and one or more supply-and-demand adjustment apparatuses, the central control apparatus includes a state collection unit that collects information with regard to a state of each supply-and-demand adjustment apparatus, an allocation band calculation unit that calculates a frequency band and an intensity of a fluctuation of a supply-and-demand adjustment to be allocated to each supply-and-demand adjustment apparatus based on the information of the state, and an adjustment amount calculation unit that calculates a supply-and-demand adjustment amount for each supply-and-demand adjustment apparatus based on the frequency band and the intensity of the fluctuation of the supply-and-demand adjustment to be allocated to said each supply-and-demand adjustment apparatus.

Supply and demand adjustment system, supply and demand adjustment method, and supply and demand adjustment program

A power flow control system is provided that is capable of improving the reliability of controlling power flow fluctuation and creating wide applicability for systems that control power flow fluctuation. A power-varying device () varies the distribution line power amount, which is a value of the power flow that flows in a distribution line () to which is connected a plurality of power sources () that each generate power. A measurement device () measures an index value relating to the total generated power amount, which is the sum total of the amount of power generated by each of the power sources. A calculation device () estimates the total generated power amount from the index value, and according to the estimation result, regulates the amount of change in the distribution line power amount that is changed by the power-varying device.

Power flow control system and power flow control method

A time point range setting unit () sets an operation startable time point when an operation is startable, and an operation end target time point which is a latest time point among time points when the operation is to be ended, with respect to each of plural power-consuming bodies (). A necessary operation time setting unit () sets a necessary operation time with respect to each of the plural power-consuming bodies (). A shape information obtaining unit () obtains shape information from a schedule management apparatus (). The shape information represents an assumed shape of a transition line indicating transition in the amount of power supplied in a target period. A demand transition setting unit () determines power demand transition information indicating transition in electrical energy demand in the target period so that the necessary operation time is obtained and the transition in the electrical energy demand generated by the plural power-consuming bodies () being operated follows the assumed shape.

Information processing apparatus, power-consuming body, information processing method, and program

An energy management system and an energy management method enable an improvement of the balance between power supply and demand. A storage battery () is connected to a power line () that transmits outside power. A storage battery controller () receives a control signal indicating a reduced use period during which the consumption of the outside power by a consumer apparatus () connected to the power line () is to be reduced, acquires an index value that has a correlation with the demand for outside power, and on the basis of the control signal and the index value, adjusts the amount of charging/discharging of the storage battery ().

Energy management system and energy management method

A time range setting unit () sets an operation startable time point at which an operation can be started and a target operation end time point which is the latest time point among time points at which the operation is to be ended, with respect to each of plural power demanding objects (). A necessary operation time setting unit () sets a necessary operation time with respect to each of the plural power demanding objects (). A shape information acquisition unit () acquires shape information from a schedule management device (). The shape information indicates an assumed shape of a transition line that represents transition in the amount of supplied power in a target period. A demand transition setting unit () sets power demand transition information indicating transition in an electric energy demand in the target period so that the necessary operation time is obtained and so that the transition in the electric energy demand generated by the plural power demanding objects () being operated accords with the assumed shape.

Information processing device, power-demanding object, information processing method, and non-transitory storage medium

A supply and demand adjustment system, that utilizes characteristics of a supply-and-demand adjustment apparatuses and precisely matches the total supply-and-demand adjustment amount with a required adjustment amount, when adjusting supply and demand, is provided. The supply and demand adjustment system that includes a central control apparatus and one or more supply-and-demand adjustment apparatuses, the central control apparatus including, supply-and-demand-adjustment-apparatus-state-collection unit that collects information with regard to a state of each supply-and-demand adjustment apparatus, allocation band calculation unit that calculates a frequency band and an intensity of a fluctuation of supply and demand adjustment to be allocated to the supply-and-demand adjustment apparatus based on the information of the state, and a supply-and-demand-adjustment-amount-calculation-unit that calculates a supply-and-demand adjustment amount for each supply-and-demand adjustment apparatus based on the frequency band and the intensity of the fluctuation of supply and demand adjustment to be allocated to the supply-and-demand adjustment apparatus.

A regulating-device-control system for controlling the operation of regulating devices for regulating the balance between electric power supply and demand includes: memory means storing, for each regulating device, correlation information expressing correlation of a state of the regulating device, an amount of power allotted to the regulating device, and an amount of variability in performance of the regulating device; determination means receiving state information that expresses the state of each regulating device and electric power information that expresses an amount of regulated power required for regulating the balance between electric power supply and demand, and, based on the correlation information, the state information, and the electric power information, determining the amount of electric power to be allotted to each regulating device such that the total value of the amount of variability in performance of each of the regulating devices is minimized under conditions in which the state of each regulating device is the state expressed by the state information and the total value of the amount of power to be allotted to the regulating devices is the amount of regulated power; and control means controlling the operation of each regulating device based on the determination result of the determination means.

Growing community of inventors

Tokyo, Japan

Yuma Iwasaki