公开(公告)号：US12166429B2

公开(公告)日：2024-12-10

申请号：US17954693

申请日：2022-09-28

Applicant: DENSO CORPORATION

Inventor： Yuu Yamahira ,  Toshiyuki Kouno ,  Hiromi Ichijyo ,  Kazuya Takeuchi ,  Tatsuya Murakami ,  Yuuya Hashimoto

IPC: H02M7/537 ,  H02K5/22 ,  H02K11/27 ,  H02M7/493 ,  H02P5/74

Abstract: A power converter includes a control circuit executing feedback control of a first inverter based on a detected value of a first sensor adapted to a first rotating electrical machine. The first sensor detects a current of a first busbar adapted to the first rotating electrical machine. The first busbar connects the first inverter and the first rotating electrical machine. A second busbar adapted to a second rotating electrical machine connects a second inverter and the second rotating electrical machine. The second busbar is arranged to be apart from the first sensor interposed with a converter busbar between the second busbar and the first sensor. A current of the converter flows through the converter busbar.

公开(公告)号：US12081137B2

公开(公告)日：2024-09-03

申请号：US17954593

申请日：2022-09-28

Applicant: DENSO CORPORATION

Inventor： Yuuya Hashimoto ,  Yuu Yamahira ,  Toshiyuki Kouno ,  Hiromi Ichijyo ,  Kazuya Takeuchi ,  Tatsuya Murakami ,  Tetsuya Matsuoka

IPC: H02M7/00 ,  H02M7/5387 ,  H02P27/08

CPC classification number: H02M7/003 ,  H02M7/53871 ,  H02P27/08

Abstract: A power converter includes an inverter, a converter, an electrical-machine busbar, an electrical-machine sensor, an electrical-machine-sensor housing, a converter, a converter busbar, a converter-sensor housing. The inverter supplies a three-phase alternating current to a rotating electrical machine. The converter converts a voltage between a direct current power supply and the inverter. The electrical-machine busbar passes a current between the inverter and the rotating electrical machine. The electrical-machine sensor detects the current flowing through the electrical-machine busbar based on a magnetic field. The electrical-machine-sensor housing accommodates the electrical-machine sensor and the electrical-machine busbar together. The converter sensor detects the current flowing through the converter based on a magnetic field. The converter-sensor housing is disposed apart from the electrical-machine-sensor housing, and accommodates the converter sensor and the converter busbar together.

公开(公告)号：US10270365B2

公开(公告)日：2019-04-23

申请号：US15547602

申请日：2016-02-05

Applicant: DENSO CORPORATION

Inventor： Tatsuya Murakami ,  Yuji Hayashi ,  Satoru Yoshikawa ,  Satoshi Takada ,  Masakazu Fukada

IPC: H02M1/32 ,  H02M7/5387 ,  H02M7/48 ,  H02M7/539 ,  H02M3/337 ,  H02M1/00

Abstract: A power conversion device includes an inverter which converts a DC power supplied thereto from a power supply device to an AC power using an operation of a switching element and outputs the AC power toward a load a current meter which measures an output current from the inverter, and a control unit which controls the operation of the switching element to change an output voltage waveform from the inverter. The control unit changes the output voltage waveform on the basis of the measured output current.

公开(公告)号：US11682516B2

公开(公告)日：2023-06-20

申请号：US16784514

申请日：2020-02-07

Applicant: DENSO CORPORATION

Inventor： Ryota Tanabe ,  Tatsuya Murakami ,  Hiroshi Shimizu ,  Naoki Hirasawa

IPC: H01F27/10 ,  H01F27/255 ,  H01F37/00 ,  H02M7/48

CPC classification number: H01F27/10 ,  H01F27/255 ,  H01F37/00 ,  H02M7/48

Abstract: A reactor cooling structure includes: a plurality of reactors that are stacked on one another, each reactor including a coil configured to produce magnetic flux when energized; and a cooling mechanism that cools the plurality of reactors, wherein each of the reactors has an exterior member that has: heat radiation surfaces respectively on both sides of the corresponding one of the reactors in a stacking direction of the stacked reactors i.e. a first direction, the heat radiation surfaces of the exterior member of each of the reactors being arranged to cool the coil of the corresponding one of the reactors; the cooling mechanism includes a cooling flow path for directly cooling the first and second heat radiation surfaces of the exterior member of each of the reactors by a refrigerant.

公开(公告)号：US12155318B2

公开(公告)日：2024-11-26

申请号：US17878718

申请日：2022-08-01

Applicant: DENSO CORPORATION

Inventor： Tatsuya Murakami ,  Yuuta Hashimoto

IPC: H05K7/20 ,  H02M7/00 ,  H02M7/5387 ,  H05K9/00

Abstract: A power converter includes a semiconductor modules, a capacitor, a housing, a shield layer and a collar member. The capacitor is electrically connected to the semiconductor modules. The housing houses at least the semiconductor modules and the capacitor. The shield layer is electrically conductive and provided on and covers at least one of inner and outer surfaces of the housing. The collar member is electrically conductive and integrated with the housing. The collar member is configured to allow a fastener to be inserted through the collar member such that the housing is fixed to a vehicle-side member via the fastener. The collar member is electrically conductively joined to the shield layer.

公开(公告)号：US10931197B2

公开(公告)日：2021-02-23

申请号：US16537660

申请日：2019-08-12

Applicant: DENSO CORPORATION

Inventor： Tatsuya Murakami ,  Yuu Yamahira ,  Kengo Mochiki

IPC: H02P1/00 ,  H02P1/28 ,  H02P3/00 ,  H02P7/06 ,  H02M3/158 ,  H02P27/06 ,  H02M1/08 ,  B60K6/22 ,  B60L50/50

Abstract: A power conversion device, mounted on a motor vehicle, has a battery, a power converter, a reactor and a control unit. The power conversion device boosts a battery voltage of the battery, and supplies a boosted voltage to a motor generator mounted on a motor vehicle. The power conversion device transmits electric power generated by the motor generator and supplies the generated electric power to the battery through the power converter. The power converter has an upper arm and a lower arm. The upper arm has upper arm side switching elements. The lower arm has lower arm side switching elements which are directly connected to the respective upper arm side switching elements. At least one of the upper arm side switching elements is composed of a MOS FET and at least one of the lower arm side switching elements is composed of an IGBT.

公开(公告)号：US20160118904A1

公开(公告)日：2016-04-28

申请号：US14887361

申请日：2015-10-20

Applicant: DENSO CORPORATION

Inventor： Satoru Yoshikawa ,  Yuji Hayashi ,  Masakazu Fukada ,  Tatsuya Murakami

IPC: H02M3/335

CPC classification number: H02M7/23 ,  H02M7/217 ,  H02M2001/007

Abstract: In a power conversion apparatus, an AC/DC conversion circuit part converts AC power supplied from an AC input and output part into DC power. A DC/DC conversion circuit part including a transformer converts the DC power supplied from the AC/DC conversion circuit part into AC power, converts converted AC power into DC power after voltage conversion by the transformer and outputs converted DC power to a DC input and output part. A smoothing capacitor is provided in a connection part between the AC/DC conversion circuit part and the DC/DC conversion circuit part to smooth a voltage at the connection part. A connection switchover part changes a maximum value of the AC voltage at the AC input and output part by switching over a connection state between the AC input and output part and an AC device.

Abstract translation: 在电力转换装置中，AC / DC转换电路部将从AC输入输出部提供的AC电力转换为DC电力。 包括变压器的DC / DC转换电路部分将从AC / DC转换电路部分提供的DC电力转换为AC电力，并且通过变压器将转换的AC电力转换成DC电压，并将转换的DC电力输出到DC输入端， 输出部分。 在AC / DC转换电路部分和DC / DC转换电路部分之间的连接部分提供平滑电容器，以平滑连接部分处的电压。 连接切换部通过切换交流输入输出部与交流装置之间的连接状态来改变交流输入输出部的交流电压的最大值。