公开(公告)号：US20150372598A1

公开(公告)日：2015-12-24

申请号：US14743596

申请日：2015-06-18

Applicant: DENSO CORPORATION

Inventor： Kiyokazu AKIYAMA ,  Shinji OHOKA ,  Yuuki TAKEMOTO

IPC: H02M3/28

CPC classification number: H02M3/285 ,  H02M1/14 ,  H02M3/3353 ,  H02M3/33569

Abstract: An electric power converter apparatus incorporates a plurality of electric power converter circuits having respective output terminals connected in common, with output power being produced from the common output terminals. Each converter circuit uses an identical switching frequency, in executing power conversion based on PWM control of switching by a plurality of switching elements. The switching operations of the respective converter circuits mutually differ in phase, by an amount determined in accordance with the currently applied PWM duty ratio. The phase difference value is predetermined for minimizing the amplitude of specific harmonic frequency components of a ripple current component in the output current from the apparatus.

Abstract translation: 电力转换装置包括多个电力转换器电路，其具有相互连接的各个输出端，输出功率由公共输出端产生。 每个转换器电路在执行基于由多个开关元件的切换的PWM控制的电力转换中使用相同的开关频率。 各个转换器电路的切换操作在相位上相互不同，其量根据当前施加的PWM占空比而确定。 相位差值是预定的，用于最小化来自装置的输出电流中纹波电流分量的特定谐波频率分量的振幅。

公开(公告)号：US20190008042A1

公开(公告)日：2019-01-03

申请号：US16065140

申请日：2016-11-30

Applicant: DENSO CORPORATION

Inventor： Kiyokazu AKIYAMA ,  Yasunari YANAGIBA

IPC: H05K1/03 ,  H05K3/46 ,  H05K1/02 ,  H05K1/11 ,  H01L23/66

CPC classification number: H05K1/03 ,  H01L23/66 ,  H05K1/024 ,  H05K1/0251 ,  H05K1/0298 ,  H05K1/116 ,  H05K3/46 ,  H05K2201/096 ,  H05K2201/09618

Abstract: A first land and a first ground pattern generate a first parasitic capacitance CLAND by capacitive coupling with a first insulating layer interposed therebetween. Then, the first parasitic capacitance CLAND is defined as a predetermined capacitance that suppresses an impedance of a via part from changing due to a change in an inductance component of the via part with respect to a first transmission line. As a result, it is possible to match the impedance of the via part with a impedance of the first transmission line by adjusting the first parasitic capacitance CLAND caused by the first land and the first ground pattern. Therefore, it is possible to prevent the transmission characteristics of the multilayer substrate from deteriorating without requiring the disposition of cavities such as through holes in the multilayer substrate.

公开(公告)号：US20180204710A1

公开(公告)日：2018-07-19

申请号：US15744491

申请日：2016-08-11

Applicant: DENSO CORPORATION ,  SOKEN, INC.

Inventor： Noboru MAEDA ,  Koji ITO ,  Kiyokazu AKIYAMA ,  Masayoshi SATAKE

IPC: H01J41/12 ,  F03G7/06 ,  H01T19/04

CPC classification number: H01J41/12 ,  F03G7/06 ,  F04D33/00 ,  H01T19/04 ,  H01T23/00

Abstract: A jet flow generation device includes: a discharge electrode; a reference electrode that is disposed away from the discharge electrode; a power supply circuit that generates an output voltage to control a potential difference between the discharge electrode and the reference electrode; a controller that switches the output voltage of the power supply circuit between a first voltage that does not induce corona discharge between the discharge electrode and the reference electrode and a second voltage that induces corona discharge between the discharge electrode and the reference electrode; and a case housing at least the reference electrode has an injection port that injects an ion wind of ions generated by the corona discharge.