公开(公告)号：US20130207586A1

公开(公告)日：2013-08-15

申请号：US13734293

申请日：2013-01-04

Applicant: Denso Corporation

Inventor： Jiro HAYASHI

IPC: H02P25/22

CPC classification number: H02P25/22 ,  H02P29/0241 ,  H02P29/032

Abstract: A first inverter circuit and a second inverter circuit are provided for a first winding set and a second winding set of a motor, respectively, and switch over power supply to the winding sets. A control unit controls operations of the inverter circuits. The control unit detects abnormality in the inverter circuits. The control unit calculates a first value with respect to each drive system based on phase currents of the inverter circuit in each system, calculates a second value based on two values selected from a plurality of first values calculated for each drive system, and detects abnormality of the inverter circuits, which corresponds to the selected first value, when the second value deviates from a predetermined range.

Abstract translation: 分别为电动机的第一绕组和第二绕组组设置第一逆变器电路和第二逆变器电路，并且将绕组的电源切换。 控制单元控制逆变器电路的动作。 控制单元检测逆变器电路的异常。 控制单元基于各系统中的逆变器电路的相电流来计算关于每个驱动系统的第一值，基于从针对每个驱动系统计算的多个第一值中选择的两个值来计算第二值，并且检测异常 当所述第二值偏离预定范围时，所述逆变器电路对应于所选择的第一值。

公开(公告)号：US20240213855A1

公开(公告)日：2024-06-27

申请号：US18599557

申请日：2024-03-08

Applicant: DENSO CORPORATION

Inventor： Shun SUGITA ,  Masaharu SAKAI ,  Kazutoshi NISHINAKAMURA ,  Jiro HAYASHI

IPC: H02K9/22 ,  B64C29/00 ,  B64D27/357 ,  H02K5/04 ,  H02K7/14

CPC classification number: H02K9/22 ,  B64D27/357 ,  H02K5/04 ,  H02K7/14 ,  B64C29/0016

Abstract: An EDS includes a motor housing and an inverter housing. The inverter housing includes inverter fins. The motor housing includes motor fins and motor guide plates. The motor fins and the motor guide plates are provided on an outer peripheral surface. Each of the motor guide plates is aligned with the motor fins along the outer peripheral surface. The motor guide plate guides air sent by a blower fan in a circumferential direction to flow toward the motor fins and the inverter fins. The motor guide plate is bent in a convex shape to bulge toward an upstream side in an axial direction.

公开(公告)号：US20240208662A1

公开(公告)日：2024-06-27

申请号：US18600936

申请日：2024-03-11

Applicant: DENSO CORPORATION

Inventor： Hideaki SUZUKI ,  Masaharu SAKAI ,  Kazutoshi NISHINAKAMURA ,  Shun SUGITA ,  Haruhiko WATANABE ,  Jiro HAYASHI

IPC: B64D33/10

CPC classification number: B64D33/10

Abstract: An EDS includes a motor housing and an inverter housing. The inverter housing includes inverter fins. The motor housing includes forward inclined fins serving as motor fins. The forward inclined fins are provided on an outer peripheral surface. The forward inclined fins are inclined in a circumferential direction with respect to a motor axis. The forward inclined fins extend straight in a direction inclined with respect to the motor axis. The entire of each of the forward inclined fins is an inclined portion. In each of the forward inclined fins, a fin downstream end is located at a position separated from a fin upstream end toward a downstream side in the circumferential direction.

公开(公告)号：US20130220726A1

公开(公告)日：2013-08-29

申请号：US13766812

申请日：2013-02-14

Applicant: Denso Corporation

Inventor： Takafumi SATOU ,  Jiro HAYASHI

IPC: H02P6/12 ,  B62D5/04 ,  H02P3/02

CPC classification number: H02P6/12 ,  B62D5/0409 ,  B62D5/0484 ,  B62D5/0487 ,  H02H7/1227 ,  H02P3/02 ,  H02P29/0241

Abstract: A power transducer failure detection device detects a failure on a power transducer, making a power transducer control device stop driving the power transducer. A first switching control device turns off a first power supply relay of a power supply source switching device and turns on a second power supply relay of the power supply source switching device. While the power transducer stops driving, a motor may rotate due to an external force to generate a regenerative voltage. The regenerative voltage is then regenerated in a battery through a route from the power transducer via the second power supply relay being turned on and a parasitic diode of the first power supply relay. This can protect elements such as switching elements and a smoothing capacitor of the power transducer against a regenerative voltage and prevent the elements from being destroyed or reducing the useful life due to overvoltage.

Abstract translation: 功率传感器故障检测装置检测功率传感器的故障，使功率传感器控制装置停止驱动功率传感器。 第一切换控制装置关闭电源切换装置的第一电源继电器，接通电源切换装置的第二电源继电器。 当功率传感器停止驱动时，电机可能由于外力而旋转，以产生再生电压。 然后，再生电压通过来自功率转换器的路径经由导通的第二电源继电器和第一电源继电器的寄生二极管在电池中再生。 这可以保护诸如功率转换器的开关元件和平滑电容器的元件抵抗再生电压，并且防止元件被破坏或由于过电压而降低使用寿命。