公开(公告)号：US12249832B2

公开(公告)日：2025-03-11

申请号：US18157332

申请日：2023-01-20

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Masahiro Rikiso ,  Asuka Abe

IPC: H02J3/00 ,  B60L50/60 ,  B60L53/20 ,  H02J3/12 ,  H02J3/38

Abstract: A power converter includes: an input unit configured to be electrically connected to a device; a voltage charge unit configured to change voltage; a voltage adjustment unit configured to adjust the voltage supplied to a transmission line; a target setting unit configured to set a first target value of the voltage change unit; a voltage monitoring unit configured to observe the voltage of the transmission line; and a threshold determination mechanism configured to calculate a second target value of the voltage adjustment unit in accordance with voltage of the transmission line. The target setting unit of the power converter is configured to generate the first target value as an output target of the voltage charge unit in accordance with the voltage observed by the voltage monitoring unit. The first target value has characteristics to change a threshold voltage for controlling output of the voltage adjustment unit depending on time.

公开(公告)号：US12283811B2

公开(公告)日：2025-04-22

申请号：US18311970

申请日：2023-05-04

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Masahiro Rikiso ,  Asuka Abe

IPC: H02J1/10 ,  H02M1/00

Abstract: A power system includes: power converters, each including a power conversion unit configured to convert an input power, and output the converted power, a controller configured to execute a primary control for controlling the output by controlling the power conversion unit based on: a reference function having a drooping characteristic defined according to an input value and a voltage of the bus or a power of the power converter to which the power conversion unit is connected, and an update unit configured to update a control method on the output; a central control device configured to execute a secondary control of controlling the power converter; the bus connected to the power conversion unit; and a power element connected to the power converter and configured to supply, consume and charge power. The central control device performs the secondary control on the power converter according to an update instruction to update the control method.