Title:
POWER MANAGEMENT DEVICE, POWER FEEDING SYSTEM, AND POWER MANAGEMENT METHOD
Document Type and Number:
Japanese Patent JP2023131414
Kind Code:
A
Abstract:
To transmit/receive power without using a communication network.SOLUTION: A power management device includes a control unit that switches an operation mode of a power feeding system by controlling a converter capable of bi-directionally converting between an internal bus voltage and an external bus voltage supplied to an internal DC bus inside a power feeding system connected via another power feeding system and an external DC bus. The control unit sets the power feeding system into a power reception mode by setting a target value of the external bus voltage in the converter to a first target value when an amount of stored electric power is less than a power storage threshold value Bth1. The control unit sets the power feeding system into a power transmission mode by setting the target value to a second target value that is larger than the first target value when the amount of stored electric power exceeds a power storage threshold value Bth2 that is larger than the power storage threshold value Bth1 and a measured value of the external bus voltage exceeds a power transmission voltage threshold value Vth.SELECTED DRAWING: Figure 5
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Inventors:
MITSUNAGA TAKUMA
SUZUKI SHINGO
NAOI KATSUO
HAJIME MASAO
UTSU HISAKAZU
SUZUKI SHINGO
NAOI KATSUO
HAJIME MASAO
UTSU HISAKAZU
Application Number:
JP2022036162A
Publication Date:
September 22, 2023
Filing Date:
March 09, 2022
Export Citation:
Assignee:
TDK CORP
International Classes:
H02J1/00; H02J7/00
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Takashi Mikami
Yoshiki Kuroki
Takashi Mikami