公开(公告)号：US20170085181A1

公开(公告)日：2017-03-23

申请号：US14857023

申请日：2015-09-17

Applicant: DENSO CORPORATION

Inventor： Kenji TOMITA ,  Kimikazu NAKAMURA ,  Shinya GOTO ,  Katsutoyo MISAWA ,  Yuuichi HANDA ,  Seiji IYASU

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M3/3378

Abstract: A power conversion apparatus supplies power from a DC power supply to a capacitive load by a current input push-pull DCDC converter provided with switching elements Q1 and Q2. When a capacitive load voltage is not larger than a second predetermined value, a first mode is used which turns ON one of the switching elements Q1 and Q2 alternated with turning OFF both. When the capacitive load voltage is larger than the second predetermined value but not larger than a first predetermined value, a second mode is used which turns ON both of the switching elements Q1 and Q2, then turns ON one of them, then turns OFF both, sequentially. When the capacitive load voltage is larger than the first predetermined value, a third mode is used, turning ON both of the switching elements Q1 and Q2 alternated with turning ON one of them.

公开(公告)号：US20140233281A1

公开(公告)日：2014-08-21

申请号：US14186169

申请日：2014-02-21

Applicant: NIPPON SOKEN, INC. ,  DENSO CORPORATION

Inventor： Shinya GOTO ,  Yuuki TAKEMOTO ,  Katsutoyo MISAWA ,  Tougo YAMAGUCHI ,  Shinji OHOKA

IPC: H02M1/44

CPC classification number: H02M1/44 ,  H02M7/003

Abstract: In a power converter, a housing is grounded. A power converter circuit is installed in the housing and configured to perform power conversion of input power into output power. An external terminal is electrically connected to the power converter circuit for connection of an external device to the power converter circuit. A first capacitor has first and second electrodes. The first electrode of the first capacitor is connected to the external terminal, and the second electrode thereof is connected to the housing. A second capacitor has first and second electrodes. The first electrode of the second capacitor is connected to the external terminal, and the second electrode thereof is connected to the housing. The first capacitor, the external terminal, the second capacitor, and the housing is arranged to provide a conductive loop.

Abstract translation: 在电源转换器中，外壳接地。 电源转换器电路安装在壳体中并被配置为将输入功率转换为输出功率。 外部端子电连接到功率转换器电路，用于将外部设备连接到功率转换器电路。 第一电容器具有第一和第二电极。 第一电容器的第一电极连接到外部端子，并且其第二电极连接到壳体。 第二电容器具有第一和第二电极。 第二电容器的第一电极连接到外部端子，并且其第二电极连接到壳体。 第一电容器，外部端子，第二电容器和壳体被布置成提供导电回路。

公开(公告)号：US20140233282A1

公开(公告)日：2014-08-21

申请号：US14186255

申请日：2014-02-21

Applicant: DENSO CORPORATION ,  NIPPON SOKEN, INC.

Inventor： Shinji OHOKA ,  Shinya GOTO ,  Katsutoyo MISAWA ,  Yuuki TAKEMOTO ,  Tougo YAMAGUCHI

IPC: H02M1/12

CPC classification number: H02M1/14 ,  H02M3/3376

Abstract: A noise filter is assembled to an electric power conversion device and has a metal housing casing and two capacitors connected to an external terminal of the device through which an electric power conversion circuit is connected to an external device. The two capacitors, the housing casing and the external terminal make a current loop. A magnetic flux of an alternating magnetic field generated in a part of the electric power conversion circuit penetrates in a first area and a second area formed in the current loop. A first induced noise current is induced in the current loop when the magnetic flux of the generated magnetic field penetrates in the first area. A second induced noise current is induced in the current loop when the magnetic flux penetrates in the second area so that the first induced noise current flows in a reverse direction to the second induced noise current.

Abstract translation: 噪声滤波器组装到电力转换装置，并且具有金属壳体壳体和连接到装置的外部端子的两个电容器，电力转换电路通过该外部端子连接到外部装置。 两个电容器，外壳和外部端子形成电流回路。 在电力转换电路的一部分中产生的交变磁场的磁通量穿过形成在电流回路中的第一区域和第二区域。 当所产生的磁场的磁通量穿过第一区域时，在电流回路中感应出第一感应噪声电流。 当磁通量穿过第二区域时，在电流回路中感应出第二感应噪声电流，使得第一感应噪声电流以与第二感应噪声电流相反的方向流动。