公开(公告)号：US20250158529A1

公开(公告)日：2025-05-15

申请号：US19020102

申请日：2025-01-14

Applicant: DENSO CORPORATION

Inventor： Kazuma SUZUKI ,  Yuichi HANDA ,  Yuuki TSUTSU

IPC: H02M3/335

Abstract: A power converter includes external connection terminals, bridge circuits, an inductance element and a controller. The bridge circuits are connected to the external connection terminals, respectively. The inductance element is connected between an AC terminal of one of two of the bridge circuits and an AC terminal of another one of two of the bridge circuits. The two of the bridge circuits are capable of transmitting power. A closed-loop circuit is formed by the two of the bridge circuits and the inductance element. The closed-loop circuit includes a capacitor connected between the inductance element and at least one of AC terminals of the two of the bridge circuit. The controller drives switching elements at a switching frequency being higher than a resonant frequency of the closed-loop circuit.

公开(公告)号：US20250105750A1

公开(公告)日：2025-03-27

申请号：US18975468

申请日：2024-12-10

Applicant: DENSO CORPORATION

Inventor： Kazuma SUZUKI ,  Shunichi KUBO

IPC: H02M3/335 ,  H02M1/32 ,  H02M3/00

Abstract: A power conversion device includes low voltage terminals and high voltage terminals. The power conversion device includes: a voltage increasing operation unit increasing the voltage input to the low voltage terminals and outputting the increased voltage to the high voltage terminals, a voltage decreasing operation unit decreasing the voltage input to the high voltage terminals and outputting the decreased voltage to the low voltage terminals, and a control unit performing a temperature increasing operation to increase a temperature of a temperature increasing object, by causing the voltage increasing operation unit to perform a voltage increasing operation and the voltage decreasing operation unit to perform a voltage decreasing operation.