公开(公告)号：US20210067079A1

公开(公告)日：2021-03-04

申请号：US17081339

申请日：2020-10-27

Applicant: DENSO CORPORATION

Inventor： Jun ISHIDA ,  Makoto TANIGUCHI

IPC: H02P25/20

Abstract: A motor control apparatus includes: a high-pole-number controller that generates a voltage command for high-pole-number drive of an electric motor and controls operation of the electric motor under the high-pole-number drive; a low-pole-number controller that generates a voltage command for low-pole-number drive of the electric motor and controls operation of the electric motor under the low-pole-number drive; and a priority pole-number determiner that determines which one of the high-pole-number drive and the low-pole-number drive is to be given priority during switching between the high-pole-number and low-pole-number drives. Moreover, during the switching, of the high-pole-number and low-pole-number controllers, the controller corresponding to the drive given priority by the priority pole-number determiner calculates the voltage command for the drive given priority; and the controller corresponding to the drive not given priority calculates, based on the voltage command for the drive given priority, the voltage command for the drive not given priority.

公开(公告)号：US20200052638A1

公开(公告)日：2020-02-13

申请号：US16598753

申请日：2019-10-10

Applicant: DENSO CORPORATION

Inventor： Hirofumi KINJO ,  Toru WAKIMOTO ,  Makoto TANIGUCHI ,  Keiji KONDO ,  Jun ISHIDA ,  Tomoya TAKAHASHI

IPC: H02P25/20 ,  H02K3/28 ,  H02K17/14 ,  H02P25/22

Abstract: In a rotary electric machine, a rotor, and a stator. The stator includes slots provided in a circumferential direction thereof, and stator windings wound in the slots. The stator windings include n groups of three-phase windings, where n is a power of 2. The slots include first slots each accommodating portions of same-group and same-phase windings in the n groups of three-phase windings. The energizing directions of the same-group and same-phase windings are identical to each other. The second slots each accommodate different-group and same-phase windings in the n groups of three-phase windings. The first slots and the second slots are arranged in the stator at predetermined intervals in a circumferential direction of the stator, and the three-phase windings of each group are wound around the stator with regular intervals therebetween.

公开(公告)号：US20160109265A1

公开(公告)日：2016-04-21

申请号：US14887888

申请日：2015-10-20

Applicant: DENSO CORPORATION

Inventor： Jun ISHIDA ,  Kiyoshi FUJII

IPC: G01D5/14

CPC classification number: G01D5/208 ,  H02P6/183 ,  H02P21/24

Abstract: In an apparatus for controlling a rotary electric machine, a voltage applier applies a high-frequency voltage to one of the field winding and the armature winding. One of a field winding and an armature winding is defined as an input winding, and the other thereof is defined as an output winding. A current detector detects a high-frequency current flowing through the output winding based on the applied high-frequency voltage. The high-frequency current includes therein information associated with the rotational position of a target magnetic pole of the rotor as a predetermined one of the magnetic poles. An estimator estimates the rotational position of the target magnetic pole of the rotor according to the high-frequency current detected by the current detector.

Abstract translation: 在用于控制旋转电机的装置中，电压施加器将高频电压施加到励磁绕组和电枢绕组之一。 励磁绕组和电枢绕组中的一个被定义为输入绕组，而另一个被定义为输出绕组。 电流检测器基于施加的高频电压检测流过输出绕组的高频电流。 高频电流包括与转子的目标磁极的旋转位置相关联的信息作为预定的一个磁极。 估计器根据由电流检测器检测的高频电流来估计转子的目标磁极的旋转位置。

公开(公告)号：US20200382039A1

公开(公告)日：2020-12-03

申请号：US16997393

申请日：2020-08-19

Applicant: DENSO CORPORATION

Inventor： Jun ISHIDA ,  Makoto TANIGUCHI

IPC: H02P25/20 ,  H02P21/22 ,  H02P27/12

Abstract: A control device for a pole-number switching electric motor applied to a system including an electric motor capable of switching a number of poles, and an inverter electrically connected to stator windings of the electric motor; includes: a basic operation unit configured to operate the inverter to control a current amplitude which is magnitude of a current vector flowing in the stator winding, and a switching operation unit configured to operate the inverter to reduce the current amplitude before switching and increase the current amplitude after switching. The switching operation unit, the pole number switching period, operates the inverter so that a total value of the current amplitude before switching and the current amplitude after switching does not exceed a limiting current value.

公开(公告)号：US20190238067A1

公开(公告)日：2019-08-01

申请号：US16260802

申请日：2019-01-29

Applicant: DENSO CORPORATION

Inventor： Kosuke KONDO ,  Yoo TANAKA ,  Jun ISHIDA

IPC: H02M7/5387 ,  H02P27/06

Abstract: In a control apparatus, a controller perfoi ins comparison between a command voltage and a cyclic carrier signal to thereby perform one of pulse-width modulation upon each of first positive and negative peaks of the command voltage being within or identical to the corresponding one of second positive and negative peaks of the cyclic carrier signal, and single-pulse modulation upon each of the first positive and negative peaks of the command voltage being outside the corresponding one of the second positive and negative peaks of the cyclic carrier signal. The pulse-width modulation generates, for each cycle of the command voltage, plural drive pulses based on a result of the comparison. The single-pulse modulation generates, for each cycle of the command voltage, a single positive pulse and a single negative pulse for each cycle of the command voltage based on a result of the comparison.

公开(公告)号：US20180219503A1

公开(公告)日：2018-08-02

申请号：US15746531

申请日：2016-07-21

Applicant: DENSO CORPORATION

Inventor： Jun ISHIDA ,  Hideaki NAKAYAMA

IPC: H02P21/05 ,  H02P6/08 ,  H02P27/04

CPC classification number: H02P21/05 ,  H02P6/08 ,  H02P6/32 ,  H02P27/04

Abstract: A control apparatus for a rotary electric machine includes at least one of a first corrector and a second corrector. The first corrector corrects a first command voltage as a function of a deviation between a command value for a field current and an actual value of the field current. The second corrector corrects a second command voltage as a function of a deviation between a command value for a d-axis component of an armature current and an actual value of the d-axis component of the armature current. At least one of the first corrector and the second corrector makes the d-axis component of the armature current and the field current non-interfere with each other.

公开(公告)号：US20140312809A1

公开(公告)日：2014-10-23

申请号：US14156867

申请日：2014-01-16

Applicant: DENSO CORPORATION

Inventor： Jun ISHIDA ,  Tomoya Takahashi

IPC: H02P6/00

CPC classification number: H02P6/002 ,  H02P6/28 ,  H02P25/22 ,  H02P27/08

Abstract: An apparatus for controlling a multi-winding rotary machine including an armature formed of a plurality of winding sets. In the apparatus, a command voltage calculator calculates command voltages to be applied to each winding set so as to control currents detected by a current detector to their respectively corresponding command currents. An interfering voltage calculator calculates, for each of the winding sets, interfering voltages proportional to the rotation speed of the rotary machine. An interfering voltage compensator compensates, for each of the winding sets, the command voltages for their respectively corresponding interfering voltages. An operation unit operates a voltage applicator to apply output values of the interfering voltage compensator to each winding set.

Abstract translation: 一种用于控制包括由多个绕组组成的电枢的多绕组旋转机器的装置。 在该装置中，命令电压计算器计算要施加到每个绕组组的指令电压，以便将由电流检测器检测到的电流控制为它们各自相应的指令电流。 对于每个绕组组，干扰电压计算器计算与旋转机器的转速成比例的干扰电压。 干扰电压补偿器对于每个绕组组补偿其各自对应的干扰电压的指令电压。 操作单元操作电压施加器以将干扰电压补偿器的输出值施加到每个绕组组。