公开(公告)号：US09813001B2

公开(公告)日：2017-11-07

申请号：US15160386

申请日：2016-05-20

Applicant: DENSO CORPORATION ,  ASMO CO., LTD.

Inventor： Ryunosuke Akimatsu ,  Tatsuya Tonari ,  Toshihiro Uchida

IPC: H03K5/00 ,  H02P6/10 ,  H02P29/50 ,  H02P6/06 ,  H02P6/14

CPC classification number: H02P6/10 ,  F04D25/0606 ,  H02P6/06 ,  H02P6/14 ,  H02P29/50 ,  H02P2209/07

Abstract: A control device capable of suppressing electromagnetic force applied to a motor has a harmonic current calculation section and an operation section. The harmonic current calculation section calculates amplitude and phase of each of harmonic currents to be superimposed over a fundamental current which flows in phase windings of a stator of the motor based on conditions relating to load change of the motor. The operation section generates and transmits instruction signals to an inverter so that the calculated superimposed harmonic currents flow in the phase windings of the stator.

公开(公告)号：US20240221987A1

公开(公告)日：2024-07-04

申请号：US18606050

申请日：2024-03-15

Applicant: DENSO CORPORATION

Inventor： Masaru Harada ,  Ritsuro Hiramatsu ,  Toshihiro Uchida

IPC: H01F13/00 ,  H02K15/03

CPC classification number: H01F13/003 ,  H02K15/03 ,  H02K2215/00

Abstract: A manufacturing apparatus of a rotor is for a rotor having a permanent magnet provided in a state of being embedded inside a rotor core, the permanent magnet having a folding shape being convex towards a radially inside part. The manufacturing apparatus includes a magnetization apparatus that magnetizes the permanent magnet in the embedded state from outside the rotor. The magnetization apparatus is provided with a yoke part at least disposed in an axially outside part of the rotor, the yoke part constituting a magnetic path for supplying a magnetization flux to the permanent magnet. The yoke part includes at least one of a dust core, a laminated steel plate, and a slit having a function of suppressing eddy current occurring due to the magnetization flux.

公开(公告)号：US11996738B2

公开(公告)日：2024-05-28

申请号：US17426818

申请日：2020-10-19

Applicant: DENSO CORPORATION

Inventor： Toshihiro Uchida

IPC: H02K1/276

CPC classification number: H02K1/2766 ,  H02K2213/03

Abstract: A rotor includes a rotor core, including a magnet accommodation cavity, and a permanent magnet, embedded in the magnet accommodation cavity of the rotor core and including a bent portion located toward a radially inner side of the rotor core. The permanent magnet has a thickness to satisfy an expression of

0.0006D+0.1626−0.5/(D/2)≤Wm/(D/2)≤−0.0006D+0.1626+0.5/(D/2).

公开(公告)号：US09450524B2

公开(公告)日：2016-09-20

申请号：US14739112

申请日：2015-06-15

Applicant: DENSO CORPORATION ,  Asmo Co., Ltd.

Inventor： Junichi Semura ,  Toshihiro Uchida

IPC: H03K5/00 ,  H02P6/10 ,  H02P29/00

CPC classification number: H02P6/10 ,  H02P29/50

Abstract: A control apparatus, for a system including a rotating machine having a stator, around which a winding wire is wound, and a power conversion circuit, includes: a superimposition device that superimposes multiple harmonic currents, for converting a first electromagnetic force to a second electromagnetic force, on a fundamental wave current, the first electromagnetic force being a second or higher order electromagnetic force as a reduction object, the second electromagnetic force being a second or higher order electromagnetic force and different from the first electromagnetic force, an order of each harmonic current being between the first electromagnetic force and the second electromagnetic force; and a manipulation device that operates the power conversion circuit to flow the fundamental wave current, on which the harmonic currents are superimposed, in the winding wire.

Abstract translation: 一种控制装置，包括具有缠绕有绕组线的定子的旋转机械的系统和电力转换电路，包括：叠加装置，其叠加多个谐波电流，用于将第一电磁力转换为第二电磁 在基波电流下，第一电磁力是作为还原物体的第二或更高阶电磁力，第二电磁力是第二或更高阶电磁力并且不同于第一电磁力，每个谐波的次序 电流在第一电磁力和第二电磁力之间; 以及操作装置，其操作所述功率转换电路，使所述谐波电流叠加在所述绕组线上的基波电流流动。

公开(公告)号：US12131853B2

公开(公告)日：2024-10-29

申请号：US17954061

申请日：2022-09-27

Applicant: DENSO CORPORATION

Inventor： Masaru Harada ,  Ritsurou Hiramatsu ,  Toshihiro Uchida

IPC: H01F13/00 ,  H02K1/18 ,  H02K15/03

CPC classification number: H01F13/003 ,  H02K1/18 ,  H02K15/03

Abstract: An apparatus for manufacturing a rotor includes a magnetizer. The magnetizer is configured to magnetize a permanent magnet in a rotor from outside the rotor. The rotor includes a rotor core having a magnet insertion hole. The permanent magnet is provided in an embedded state in the magnet insertion hole and has a bent-back shape protruding radially inward. The magnetizer includes a first yoke portion, a second yoke portion, and a magnetization coil. The first yoke portion has an opposing portion facing an outer peripheral surface of the rotor. The second yoke portion forms a magnetic path together with the first yoke portion. The magnetization coil is disposed on the magnetic path of the first and second yoke portions. The magnetizer magnetizes the permanent magnet by energizing the magnetization coil to apply a magnetizing magnetic flux at least through the rotor between the first yoke portion and the second yoke portion, which are located opposed to each other in a radial direction of the rotor.

公开(公告)号：US09819289B2

公开(公告)日：2017-11-14

申请号：US15420698

申请日：2017-01-31

Applicant: DENSO CORPORATION ,  ASMO CO., LTD.

Inventor： Ryunosuke Akimatsu ,  Toshihiro Uchida

IPC: H02P27/04 ,  H02P6/16 ,  H02P27/08 ,  H02K1/27

CPC classification number: H02P6/16 ,  H02K1/2786 ,  H02P6/157 ,  H02P27/08 ,  H02P29/50

Abstract: In a control apparatus, a magnetic flux information acquiring unit acquires magnetic flux information of magnetic poles of a rotating electric machine. A fundamental setting unit sets a fundamental command value for supplying a fundamental current to a winding of the rotating electric machine. A harmonic setting unit sets, based on the magnetic flux information acquired by the magnetic flux information acquiring unit, a harmonic command value for supplying a reduction current to the winding. The reduction current is a harmonic current for reducing variation in a radial electromagnetic force acting on a rotor of the rotating electric machine. An operating unit operates, based on the fundamental command value set by the fundamental setting unit and the harmonic command value set by the harmonic setting unit, an electric power converter to supply the winding with a drive current that is obtained by superimposing the reduction current on the fundamental current.

公开(公告)号：US09806646B2

公开(公告)日：2017-10-31

申请号：US15346033

申请日：2016-11-08

Applicant: DENSO CORPORATION

Inventor： Ryunosuke Akimatsu ,  Tatsuya Tonari ,  Toshihiro Uchida

IPC: H02P6/10 ,  H02P29/60

CPC classification number: H02P6/10 ,  H02P29/60

Abstract: In a control apparatus, a fundamental voltage generator generates, based on a target rotational speed, a fundamental voltage command for a fundamental voltage. A property storage stores a natural vibration property of a rotor when the rotor is rotating as a rotating vibration property. A rotating state detector detects a rotating position and a rotational speed of the rotor as a rotating state of the rotor. A harmonic voltage generator generates, based on the rotating state of the rotor and the rotating vibration property, a harmonic voltage command to be superimposed on the fundamental voltage command generated by the fundamental voltage generator.