公开(公告)号：US20190078812A1

公开(公告)日：2019-03-14

申请号：US15762771

申请日：2016-09-05

Applicant: DENSO CORPORATION

Inventor： Teruaki OHYAMA ,  Koji SAKAI ,  Yuuji KAMIYA ,  Tomoyuki SUMI

IPC: F25B1/10 ,  F04C28/06 ,  F04C29/00 ,  F25B49/00 ,  F25B49/02 ,  H02P3/02 ,  H02P3/22

Abstract: An electric compressor includes a compression portion discharging a high pressure refrigerant by compressing a low-pressure drawn refrigerant, an electric motor driving the compression portion with a rotation of a rotor, a motor drive circuit driving the electric motor, an intermediate pressure port through which an intermediate pressure refrigerant is introduced into the compression portion, and a controller performing a rotation control of the rotor. When the controller stops the electric motor in a two-step compression mode in which the intermediate pressure refrigerant is introduced into the compression portion, the controller stops the rotor rotating by performing short-circuit braking on the electric motor and then fixes a rotational position of the rotor at a predetermined rotational position by performing direct current excitation on the electric motor.

公开(公告)号：US20170369061A1

公开(公告)日：2017-12-28

申请号：US15541259

申请日：2016-01-21

Applicant: DENSO CORPORATION

Inventor： Tomoyuki SUMI ,  Koji SAKAI ,  Yuuji KAMIYA ,  Hideyuki MORITA

IPC: B60W30/14 ,  H02P29/00 ,  H02P27/06

CPC classification number: B60W30/146 ,  B60L1/00 ,  B60L15/20 ,  B60L2240/421 ,  B60L2240/429 ,  B60L2270/142 ,  F04B49/06 ,  F04B49/065 ,  H02P23/14 ,  H02P27/06 ,  H02P29/00 ,  H02P2205/07

Abstract: A CPU drives an inverter based on a command rotation speed that is inputted from a higher level ECU at a predetermined update interval. The CPU acquires an actual rotation speed of the electric motor, and calculates an accelerated rate and a decelerated rate based on the update interval and a difference between the actual rotation speed and the command rotation speed such that the actual rotation speed changes without reaching the command rotation speed and becoming constant before an end of the update interval. The CPU drives the inverter such that the electric motor rotates at the calculated rate.

公开(公告)号：US20140269604A1

公开(公告)日：2014-09-18

申请号：US13833035

申请日：2013-03-15

Applicant: DENSO CORPORATION

Inventor： Yuuji KAMIYA ,  Hidenori AKITA ,  Toshiya SAITO

IPC: H04L5/00

CPC classification number: H04L5/0066 ,  H04L5/0005 ,  H04L5/0037 ,  H04W72/048

Abstract: An inter-vehicle communication device that is connected to a wide-area communication terminal determines a dedicated short-range communication resource assignment by using a wide-area communication resource assignment that is assigned to the wide-area communication terminal. Since a plurality of terminals are not assigned to the same resource block in the wide-area communication resource assignment, the dedicated short-range communication resource assignment determined by using the wide-area wireless communication resource assignment can also prevent a plurality of terminals from being assigned to the same time slot. The wide-area communication resource assignment is essentially necessary for the communication between a base station communication device and the terminals. Since the wide-area communication resource assignment which is necessary is used to determine the dedicated short-range communication resource assignment, a limit to the amount of downlink data can be reduced.

Abstract translation: 连接到广域通信终端的车间通信设备通过使用分配给广域通信终端的广域通信资源分配来确定专用短距离通信资源分配。 由于在广域通信资源分配中没有分配多个终端到相同的资源块，所以通过使用广域无线通信资源分配确定的专用短距离通信资源分配也可以防止多个终端成为 分配到相同的时隙。 广域通信资源分配对于基站通信设备和终端之间的通信基本上是必需的。 由于需要的广域通信资源分配用于确定专用的短距离通信资源分配，所以可以减少对下行链路数据量的限制。