公开(公告)号：US20170155327A1

公开(公告)日：2017-06-01

申请号：US15365554

申请日：2016-11-30

Applicant: DENSO CORPORATION

Inventor： Akira TOKUMASU ,  Hiroshi TAKI ,  Kazuhiro SHIRAKAWA

IPC: H02M3/337

CPC classification number: H02M3/3376 ,  H02M3/33584 ,  H02M3/33592 ,  H02M3/337 ,  H02M3/3372 ,  H02M2001/0054 ,  Y02B70/1491

Abstract: In a push-pull type DC/DC converter capable of operating primary side switching elements alternately, a switching operation section turns on a primary side switching element having a high priority after a mode (d) as a normal state is transferred to a mode (d) as an inverse state during a circulation period when a load current is circulated into the secondary side rectifier elements when all of the primary side switching elements are turned off. To turn on the primary side switching element having a high priority after occurrence of the state transition to the inverse state can reduce a voltage immediately after supplying of electric power to the primary side switching elements with using exciting current and without adding any additional component.

公开(公告)号：US20240088694A1

公开(公告)日：2024-03-14

申请号：US18517149

申请日：2023-11-22

Applicant: DENSO CORPORATION

Inventor： Kazuhiro SHIRAKAWA ,  Keiya Tani ,  Shunichi Kubo

IPC: H02J7/00 ,  H02J7/06

CPC classification number: H02J7/00711 ,  H02J7/00714 ,  H02J7/06 ,  H02J2207/20

Abstract: An electrical charging apparatus working to electrically charge an electrical storage device includes an electrical power converter and a controller. The electrical power converter converts an alternating-current input voltage into a direct-current voltage and outputs it to the electrical storage device. The controller works to control the electrical power converter to pulsate the charging current supplied from the electrical power converter to the electrical storage device. The controller also controls the electrical power converter to set a pulsation frequency of the charging current to an integral multiple of the frequency of the input voltage and also to bring a phase difference between a zero-crossing time of the input voltage and a time when the charging current is minimized to be smaller than or equal to one-eighth of one cycle of the input voltage.

公开(公告)号：US20240088702A1

公开(公告)日：2024-03-14

申请号：US18517157

申请日：2023-11-22

Applicant: DENSO CORPORATION

Inventor： Kazuhiro SHIRAKAWA ,  Keiya TANI ,  Shunichi KUBO

IPC: H02J7/02 ,  H02M3/335

CPC classification number: H02J7/02 ,  H02M3/33569 ,  H02J2207/20

Abstract: An electrical charging apparatus working to electrically charge an electrical storage device includes an electrical power converter and a controller. The electrical power converter converts an alternating-current input voltage into a direct-current voltage and outputs it to the electrical storage device. The controller works to control the electrical power converter to pulsate the charging current supplied from the electrical power converter to the electrical storage device. The controller also controls the electrical power converter to set a pulsation frequency of the charging current to an integral multiple of the frequency of the input voltage and also to bring a phase difference between a zero-crossing time of the input voltage and a time when the charging current is minimized to be smaller than or equal to one-eighth of one cycle of the input voltage.

公开(公告)号：US20140003106A1

公开(公告)日：2014-01-02

申请号：US13927779

申请日：2013-06-26

Applicant: DENSO CORPORATION

Inventor： Kazuhiro SHIRAKAWA ,  Hiroshi TAKI ,  Jun ISHII

IPC: H02M7/217

CPC classification number: H02M7/217 ,  H02M1/4225 ,  H02M7/003 ,  H02M2001/123 ,  Y02B70/126

Abstract: A boost converter capable of reducing a common-mode current that flows to the outside of a casing. In the converter, a boost circuit includes first and second inductors and at least one switching element electrically connected therebetween. A controller turns on and off the at least one switching element to boost an input voltage of the boost circuit. A first floating capacitor is formed between a first electrical path, which is at the same potential as a junction between the at least one switching element and the first inductor, and a mounting member coupled to a reference potential member with an insulator therebetween. A second floating capacitor is formed between a second electrical path, which is at the same potential as a junction between the at least one switching element and the second inductor, and the mounting member.

Abstract translation: 一种升压转换器，其能够降低流向壳体外部的共模电流。 在转换器中，升压电路包括第一和第二电感器以及在它们之间电连接的至少一个开关元件。 控制器打开和关闭至少一个开关元件以升高升压电路的输入电压。 第一浮动电容器形成在与至少一个开关元件和第一电感器之间的结点处于相同电位的第一电路和耦合到参考电位元件的安装元件之间，其间具有绝缘体。 第二浮动电容器形成在与至少一个开关元件和第二电感器之间的结点处于相同电位的第二电路和安装构件之间。