Tdk Corporation

Masao Ichi

Shingo Suzuki

Katsuo Naoi

Takuma Mitsunaga

Hisakazu Uto

An upper power management device includes: an update unit that updates a target value of interest based on a received power value of electric power received by a first power feeding system that is making a power transmission request, and a transmitted power value of electric power transmitted by a second power feeding system that is responding to the power transmission request, the target value of interest including at least one of a power reception target value of an external bus voltage in a first converter of the first power feeding system, and a power transmission target value of the external bus voltage in a second converter of the second power feeding system; and an output unit that outputs a first setting command for setting the power reception target value in the first converter and a second setting command for setting the power transmission target value in the second converter.

Upper power management device, power interchange control method, and recording medium

A power management device includes a control unit that controls a converter capable of bidirectionally converting between an external bus voltage and an internal bus voltage in a first power feeding system. When an amount of stored electric power of the first power feeding system is less than a first storage threshold value, the control unit sets a target value of the external bus voltage to a first power reception target value corresponding to a first transmission power value in a first power transmission request transmitted to an upper power management device. When the amount of stored electric power exceeds a second storage threshold value, the control unit sets the target value of the external bus voltage to a first power transmission target value corresponding to a second transmission power value in a second power transmission request received from a second power feeding system.

Power management device, upper power management device, and power management method

A power management device is a power management device that controls a temperature inside a housing in a power storage system that includes a power storage device including a storage battery and the housing for housing the power storage device. The power management device includes an acquisition unit that acquires status information indicating a status of the power storage system, a calculation unit that calculates a target temperature in the housing based on an allowable capacity deterioration rate of the storage battery, and an air volume control unit that controls an air volume of a fan provided in the housing based on the status information and the target temperature.

Power management device and power storage system

A power feeding system includes a direct current (DC) bus for supplying DC power, a renewable energy power generation device connected to the DC bus, a first converter connected to the DC bus and converting a bus voltage supplied to the DC bus into a load voltage supplied to a load device, a storage battery, a second converter provided between the storage battery and the DC bus and capable of bidirectionally converting the bus voltage and a battery voltage of the storage battery, and a power management device controlling the second converter to charge and discharge the storage battery. The power management device controls the second converter to change the bus voltage based on difference power obtained by subtracting load power supplied to the load device from supply power supplied to the DC bus, the supply power including generated power generated by the renewable energy power generation device.

Power feeding system and power management device

A DC power supply system includes: nodes to connect to a DC bus and constitute a DC grid with the bus; a power management apparatus that manages the power demand of the entire grid; and a starter device that makes the nodes start up and connect to the bus one by one in an order in a state where the bus is down to start up the entire grid. The starter device supplies start-up power through a power supply line to start up each node. The starter device diagnoses nodes to be diagnosed selected from among the nodes before supply of the power to determine the abnormality from a response with respect to a diagnostic signal supplied to the nodes through the start-up power supply line. When the node diagnosed is determined to be normal, the starter device supplies the start-up power thereto and connects it to the bus.

Growing community of inventors

Tokyo, Japan

Masao Ichi