公开(公告)号：US10090760B2

公开(公告)日：2018-10-02

申请号：US15431913

申请日：2017-02-14

Applicant: Mitsubishi Electric Corporation

Inventor： Masaru Kobayashi ,  Matahiko Ikeda ,  Nobuhiro Kihara ,  Kazuhiko Otsuka ,  Junichi Abe

IPC: H02M3/00 ,  H02M3/158 ,  H02J7/00 ,  H02M1/32 ,  H02M1/00

Abstract: In a DC-DC voltage conversion device, overheat of a diode element connected in anti-parallel with a semiconductor switching element is a problem, and in order to resolve this, a temperature of a semiconductor switching element of a main conversion circuit is detected, a temperature of a diode element connected in parallel with the semiconductor switching element is calculated using a correction calculation of the detected semiconductor switching element temperature value in accordance with a step-up ratio of the DC-DC voltage conversion device, and diode element overheat protection is carried out in accordance with the calculated temperature value.

公开(公告)号：US09893620B2

公开(公告)日：2018-02-13

申请号：US15259688

申请日：2016-09-08

Applicant: Mitsubishi Electric Corporation

Inventor： Matahiko Ikeda ,  Mai Uenaka ,  Yuta Komatsu ,  Ryota Kondo ,  Masaru Kobayashi ,  Nobuhiro Kihara ,  Naoki Moritake

IPC: H02M3/158 ,  H02M1/08 ,  H02M1/14 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M1/14 ,  H02M3/07 ,  H02M3/1584 ,  H02M2001/0009 ,  H02M2001/0025

Abstract: An object of this invention is to obtain a control apparatus and a control method for a DC/DC converter, with which a DC/DC converter can be controlled with superior stability and responsiveness while reducing the size of a storage medium. A calculation value is calculated in accordance with a specific control method using a differential voltage between a target output voltage and an output voltage, whereupon a control calculation value is calculated from the calculation value and an input voltage.

公开(公告)号：US08803491B2

公开(公告)日：2014-08-12

申请号：US14091929

申请日：2013-11-27

Applicant: Mitsubishi Electric Corporation

Inventor： Masaru Kobayashi ,  Matahiko Ikeda ,  Hirotoshi Maekawa

IPC: H02M3/158 ,  H02M3/156

CPC classification number: H02M3/158

Abstract: A power module includes at least two pairs of two power semiconductor units (PSUs), each of which includes a switch element and a rectifier element connected in anti-parallel. One of two PSUs in one pair and one of two PSUs in another pair are connected in series between primary and secondary positive terminals of a DC/DC voltage converter. Another of two PSUs in the one pair and another of two PSUs in the another pair are connected in series between the primary positive terminal and a secondary negative terminal in a direction reverse to a direction of the ones of two PSUs. Control is performed to suppress transient voltage fluctuations that occur in switching between the state where the polarity of a reactor current is only one of positive and negative and the state where the polarity remains one of positive and negative.

Abstract translation: 功率模块包括至少两对两个功率半导体单元（PSU），每个功率半导体单元包括开关元件和以反并联方式连接的整流元件。 一对中的两个PSU中的一个和另一对中的两个PSU中的一个在DC / DC电压转换器的初级和次级正端子之间串联连接。 一对中的两个PSU中的另一个和另一对中的两个PSU中的另一个在与两个PSU的方向相反的方向上串联连接在初级正极端子和次级负极端子之间。 执行控制以抑制在电抗器电流的极性仅为正负极的状态和极性保持为正负的状态之间切换中发生的瞬态电压波动。

公开(公告)号：US10014776B2

公开(公告)日：2018-07-03

申请号：US15449191

申请日：2017-03-03

Applicant: Mitsubishi Electric Corporation

Inventor： Masaru Kobayashi ,  Shinsuke Idenoue ,  Satoshi Ishii ,  Kazuhiko Otsuka ,  Junichi Abe

IPC: B60L1/00 ,  H02M3/158 ,  H02M7/537 ,  H02P27/00 ,  G01R19/00 ,  G01R19/165

CPC classification number: H02M3/158 ,  G01R19/003 ,  G01R19/165 ,  G01R31/2829 ,  H02M1/32 ,  H02M7/537 ,  H02M7/5387 ,  H02M2001/007 ,  H02P27/00 ,  H02P27/06 ,  H02P29/0241

Abstract: A power conversion device provided with a DC power source, a voltage boost converter, an inverter, a primary smoothing capacitor, a secondary smoothing capacitor, an intermediate capacitor provided in the voltage boost converter and three voltage sensors which measure the voltages of the capacitors, further including an abnormality diagnosis controller which makes a diagnosis of the presence/absence of an abnormality in the detection characteristics of the voltage sensors, on the basis of the state of transition of the detection results of the voltage sensors which are monitored during a discharge operation by the respective capacitors.