Yasuo Okuda
Yasuo Okuda, Yawata City JP
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20120212062 | BATTERY PARALLEL-OPERATION CIRCUIT AND BATTERY SYSTEM - A first line includes a switching element and is electrically coupled to a branch point and an external load which is electrically connectable to a battery parallel-operation circuit. A second line includes a resistive element, and is electrically coupled to the external load and the branch point. The first line and the second line are each provided in a plurality. The plural first lines are connected in parallel to one another, and the plural second lines are connected in parallel to one another. The branch points are electrically coupled respectively to plural external, connectable battery units. | 08-23-2012 |
20120212183 | POWER MANAGEMENT SYSTEM - Provided is a power management system capable of controlling charge and discharge of storage batteries according to power requirement of load even when handling electric power of large scale. A system controller receives load-related information data including the power requirement of load and storage battery-related information data including a state of a storage battery assembly including multiple storage batteries and creates an overall charge-discharge control instruction for the entire power management system based on the load-related information data and the storage battery-related information data. A hierarchical charge-discharge control apparatus receives the overall charge-discharge control instruction from the system controller and performs charge-discharge control of the multiple storage batteries, classified into hierarchical levels, on a hierarchical level basis. | 08-23-2012 |
Yasuo Okuda, Moriguchi-Shi JP
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20130099751 | CHARGE/DISCHARGE CONTROL APPARATUS - An estimation unit estimates the amount of power consumption for each unit period of time. A rechargeable battery control unit controls the rechargeable battery such that an exceeding amount of power worth the amount of power exceeding a target amount of power during a unit period of time is charged into the battery, and power is discharged from the battery during a time zone wherein the target amount of power is exceeded, on the basis of the result of the estimation. When the battery needs to be charged in excess of the upper-limit value, the control unit charges the battery up to the upper-limit value during a time zone wherein the amount of power consumption estimated is light, and the amount of power that exceeds the upper-limit value is charged during a time zone that is close to the time zone wherein the target amount of power is exceeded. | 04-25-2013 |
Yasuo Okuda, Kyoto JP
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20130187466 | POWER MANAGEMENT SYSTEM - Provided is a power management system, wherein charging/discharging is conducted while reliably preventing overcharging/over-discharging, and charging/discharging control of a storage-battery system comprising a plurality of storage battery units is conducted. An overall storage-battery-unit management unit detects voltages of storage-battery packs composing the storage-battery system, voltages of unit cells composing the storage-battery packs, and serial voltages of the storage battery units, each of which comprises a plurality of storage-battery packs connected in series. Charging is stopped when either of these voltages exceeds an upper limit value, and discharging is stopped when either of these voltages is less than a lower limit value. | 07-25-2013 |
20130193768 | POWER SUPPLY SYSTEM - To provide a power supply system equipped with a storage battery assembly including a plurality of storage battery control units, the power supply system being configured such that a group of the storage battery control units, which are selected from the storage battery control units, and which have output voltages within a predetermined voltage range, are first connected to the parallel connection line, and such that the voltage range is set so as to maximize the number of the storage battery control units having output voltages within the voltage range. | 08-01-2013 |
20150022004 | CONTROL DEVICE AND POWER DISTRIBUTION SYSTEM - A detection unit determines whether a commercial power supply is in a power failure state or a power distribution state. A power source connection management unit controls whether a solar cell is to be connected to a first power conditioner connected to a storage battery or to be connected to the commercial power supply via a second power conditioner. A load connection controller controls connection of the first power conditioner, commercial power supply, and a load. When the commercial power supply is in a power distribution state, the power source connection management unit does not cause the solar cell to be connected to the first power conditioner but connected to the commercial power supply via the second power conditioner, and the load connection controller causes the first power conditioner and the commercial power supply to be connected to the load. | 01-22-2015 |
20150028677 | CONTROL DEVICE, CONVERSION DEVICE, CONTROL METHOD, AND ELECTRICITY DISTRIBUTION SYSTEM - In a control device configured to control power to be supplied to a specific load from at least one of a converter that has a power generator and a storage battery, and a commercial power supply, the control device determines whether the commercial power supply is in a power failure state or a power distribution state, in which: when determining that the commercial power supply is in a power distribution state, the control device causes both of the converter and the commercial power supply to be connected to the specific load; and when determining that the commercial power supply has made a transition from a power distribution state to a power failure state, the control device causes the commercial power supply to be disconnected from the specific load while maintaining the connection between the converter and the specific load. | 01-29-2015 |
Yasuo Okuda, Yawata-Shi JP
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20130181526 | POWER SUPPLY SYSTEM - A power supply system provided with a plurality of battery units, a power converter connected to parallel connection lines and including a bidirectional DC/AC converter circuit or a bidirectional voltage converter circuit, and a master controller for controlling the power converter, wherein the master controller: receives a switch state signal expressing that selection switches are actually closed; causes the power converter to operate after at least a prescribed standard number of the selection switches are closed; calculates target charge/discharge power according to the number of storage battery control units connected to the power converter on the basis of the switch state signal; and controls the power converter in such a manner that the target charge/discharge power is reached. | 07-18-2013 |
20130218358 | MANAGEMENT SYSTEM - A power management system is configured to comprise: a plurality of power management units ( | 08-22-2013 |