Abstract: A power conversion device includes a DC load, a solar cell, a storage battery, a first converter circuit for the DC load, a second converter circuit for the solar cell, a third converter circuit for the storage battery, a system power supply, and a controller. Each of the first to third converter circuits has a switching element and a reactor. The reactors of the first to third converter circuits are connected to each other at a connection point in a form of star connection. The controller controls the switching elements of the first to third converter circuits. The controller controls the voltage at the connection point so as to enable at least: an electric power supply from the solar cell to the DC load; an electric power supply from the solar cell to the storage battery; and an electric power supply from the storage battery to the DC load.

Abstract: An electric power supply apparatus includes a controller configured to control an amount of generated power, obtained from an energy creation device, supplied to multiple power-using devices capable of being operated or charged with the generated power. The power-using devices are assigned priorities based on an order in which the power-using devices use the generated power, and the controller supplies the generated power to the power-using devices in descending order of the priorities according to the amount of the generated power obtained from the energy creation device and a predetermined supply power amount required by each power-using device.

Abstract: The invention includes: charging/discharging devices including storage batteries and having a grid-connected function to perform charging/discharging operations on an electric power system and an islanded-operation function to supply the electric power system with a constant-voltage constant-frequency electric power; a monitor detects an electric power state of the charging/discharging device and to transmit detection output to the charging/discharging device; and a switching unit connects and disconnects commercial power source to and from electric power system. When a commercial power source is normal, the switching unit connects the commercial power source to the electric power system and charging/discharging devices establish a grid connection.

Abstract: An electric power supply system is provided. The electric power supply system includes charge and discharge devices capable of performing a system interconnection to charge and discharge a power system. At least one of the charge and discharge devices is capable of performing a simulated system operation of supplying electric power of constant power and constant frequency to the power system when an abnormality occurs in a commercial power supply. According to a check result on a state of charge of an electricity storage, electric power supplied from a distributed power supply, and consumption power in a load, the electric power supply system can simultaneously charge or discharge electricity storages of the charge and discharge devices, and preferentially charges the electricity storage of the charge and discharge device performing the simulated system operation, and preferentially discharges the electricity storage of the charge and discharge device performing the system interconnection.

Abstract: An alternating-current power line is wired in a building for supplying alternating-current electricity to an electric load. A bidirectional power converter converts bilaterally between alternating-current electricity and direct-current electricity. A power storage unit is connected to the alternating-current power line through the bidirectional power converter. The power storage unit is charged with electricity from the alternating-current power line and discharges direct-current electricity into the alternating-current power line. A charge-and-discharge unit charges a vehicular power accumulating device with alternating-current electricity supplied from the alternating-current power line through a connecting terminal and discharges electricity outputted as alternating-current electricity from the vehicle to the connecting terminal.

Abstract: An electric power supply system is provided. The electric power supply system includes charge and discharge devices capable of performing a system interconnection to charge and discharge a power system. At least one of the charge and discharge devices is capable of performing a simulated system operation of supplying electric power of constant power and constant frequency to the power system when an abnormality occurs in a commercial power supply. According to a check result on a state of charge of an electricity storage, electric power supplied from a distributed power supply, and consumption power in a load, the electric power supply system can simultaneously charge or discharge electricity storages of the charge and discharge devices, and preferentially charges the electricity storage of the charge and discharge device performing the simulated system operation, and preferentially discharges the electricity storage of the charge and discharge device performing the system interconnection.

Abstract: An electric power supply apparatus includes a controller configured to control an amount of generated power, obtained from an energy creation device, supplied to multiple power-using devices capable of being operated or charged with the generated power. The power-using devices are assigned priorities based on an order in which the power-using devices use the generated power, and the controller supplies the generated power to the power-using devices in descending order of the priorities according to the amount of the generated power obtained from the energy creation device and a predetermined supply power amount required by each power-using device.

Abstract: The invention includes: charging/discharging devices including storage batteries and having a grid-connected function to perform charging/discharging operations on an electric power system and an islanded-operation function to supply the electric power system with a constant-voltage constant-frequency electric power; a monitor detects an electric power state of the charging/discharging device and to transmit detection output to the charging/discharging device; and a switching unit connects and disconnects commercial power source to and from electric power system. When a commercial power source is normal, the switching unit connects the commercial power source to the electric power system and charging/discharging devices establish a grid connection.

Abstract: A charge-discharge system includes a consolidation ECU and a plurality of storage batteries having equal rated capacities for charging electric power from a power grid and for discharging electric power stored therein. The consolidation ECU is configured to perform a charge operation or a discharge operation exclusively on only one of the plurality of storage batteries at a time, according to a priority order of each of the plurality of storage batteries, without performing a charge operation or a discharge operation on more than one of the plurality of storage batteries simultaneously. In such manner, in a system having a plurality of storage batteries having equal rated capacities, drastic fluctuation of charge/discharge electric power is prevented.

Abstract: The present invention provides: (1) crystals of a dipeptide which do not substantially comprise a dipeptide comprising D-amino acid as a constituent or a polypeptide consisting of three or more amino acids; and (2) crystals of a dipeptide which do not substantially comprise a dipeptide comprising D-amino acid as a constituent, a polypeptide consisting of three or more amino acids, or an amino acid amide; and a process for producing the dipeptide crystals.

Abstract: A power supply system includes a solar power generator, a storage, a controller, a calculator calculating a predicted amount of electricity consumed and a predicted amount of electricity generated, a calculator calculating a shortage amount that is a difference between the predicted amount of electricity consumed and the predicted amount of electricity generated, and a device setting a predicted amount of electricity stored. In a specified time in which electricity cost is lower than in other times, the controller controls such that the storage is supplied with electricity supplied to a building until an amount of electricity stored reaches the predicted amount of electricity stored. In the other times when an amount of solar power generation is larger than an amount of electricity consumed by an electric load, the controller controls such that the storage stores a surplus of the solar electricity.

Abstract: A power supply system includes a solar power generator, a storage, a controller, a calculator calculating a predicted amount of electricity consumed and a predicted amount of electricity generated, a calculator calculating a shortage amount that is a difference between the predicted amount of electricity consumed and the predicted amount of electricity generated, and a device setting a predicted amount of electricity stored. In a specified time in which electricity cost is lower than in other times, the controller controls such that the storage is supplied with electricity supplied to a building until an amount of electricity stored reaches the predicted amount of electricity stored. In the other times when an amount of solar power generation is larger than an amount of electricity consumed by an electric load, the controller controls such that the storage stores a surplus of the solar electricity.

Abstract: An electric power accumulating device is charged with electric power supplied from an electric power system and is configured to discharge electric power to a load device. A control unit predicts, with reference to an electric power consumption result of the load device, an electric power consumption of the load device in each time zone in one day and determines, according to the predicted electric power consumption, a discharge implementation time zone or a discharge threshold. The control unit causes the electric power accumulating device to discharge electric power to the load device when determining that the present time is in the discharge implementation time zone or when an electric power consumed by the load device is greater than or equal to the determined discharge threshold.

Abstract: An electric power supply system has a sub breaker arranged in a sub line electrically connected with a power line to intercept an electrical link between a main breaker and the sub line if a predetermined value of current flows through the sub line. A current detector is arranged in the sub line to detect a value of current supplied to an energy storing portion. A controller causes a battery of a vehicle to store electricity with an electric current equal to or lower than a current value that is calculated by subtracting the value of current detected by the current detector from the predetermined value of current set for the sub breaker.

Abstract: An alternating-current power line is wired in a building for supplying alternating-current electricity to an electric load. A bidirectional power converter converts bilaterally between alternating-current electricity and direct-current electricity. A power storage unit is connected to the alternating-current power line through the bidirectional power converter. The power storage unit is charged with electricity from the alternating-current power line and discharges direct-current electricity into the alternating-current power line. A charge-and-discharge unit charges a vehicular power accumulating device with alternating-current electricity supplied from the alternating-current power line through a connecting terminal and discharges electricity outputted as alternating-current electricity from the vehicle to the connecting terminal.

Abstract: The present invention provides: a method for purifying an oligopeptide, which comprises a step of contacting a solution comprising the oligopeptide and a neutral amino acid with an ion exchange resin in an effective pH range; the method for purifying an oligopeptide, which comprises (a) a step of passing a solution comprising the oligopeptide and the neutral amino acid through a column packed with an ion exchange resin, and (b) a step of eluting the oligopeptide contacted with the ion exchange resin with an eluting solvent; the above method using a weakly acidic cation exchange resin; the above method using a weakly basic anion exchange resin, etc.

Abstract: The present invention provides: (1) crystals of a dipeptide which do not substantially comprise a dipeptide comprising D-amino acid as a constituent or a polypeptide consisting of three or more amino acids; and (2) crystals of a dipeptide which do not substantially comprise a dipeptide comprising D-amino acid as a constituent, a polypeptide consisting of three or more amino acids, or an amino acid amide; and a process for producing the dipeptide crystals.

Abstract: In a heat exchanger having a coaxial pipe, the coaxial pipe is formed by integrating an inner pipe, an outer pipe and connecting walls together by an extruding or a drawing forming process. A header of a first connecting member is connected to a removed portion formed by removing a part of the outer pipe at an end portion of the coaxial pipe. A second connecting member is welded to the inner pipe at a more longitudinal end side of the inner pipe than the header. Thus, the coaxial pipe can be bent like a coil for downsizing the heat exchanger without reducing the heat-exchanging ability of the heat exchanger, and the total cost of manufacturing the heat exchanger can be reduced.

Abstract: An air-conditioning apparatus for vehicle use which can obtain sufficient heater capacity even in a cold-climate region, can utilize an existing heater unit, can combine a combustion type heater with a simple assembly operation, and can utilize exhaust heat of a motor for travel use of an automobile for heating a passenger compartment. The air-conditioning apparatus includes a refrigeration cycle connecting a refrigerant compressor, a refrigerant/water heat exchanger, a first pressure-reducer, and an exterior heat exchanger in an annular configuration. Further, a hot-water cycle connects the refrigerant/water heat exchanger, a hot-water heater core, an exhaust-heat cooler, and a water pump in an annular configuration and connects a combustion type heater in parallel with the refrigerant/water heat exchanger.

Abstract: In a counter apparatus for an image forming apparatus according to the present invention, which counts and manages the number of image forming operations, data which is ultimately written is retrieved from data stored in an EEPROM, and the retrieved data is set in a RAM counter as an initial value. The RAM counter performs a count-up operation for each printing operation for production of new data. The new data is written in the EEPROM for each production, so that a count value when a power source is turned off is held therein. In the EEPROM, a plurality of unit areas are continuously provided and are used as data write areas. The new data is sequentially written for each unit area. Thus, the number of write operations for the unit areas is decreased, so that the EEPROM which has a limited number of times of write access can constitute the counter apparatus together with the RAM counter.