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公开(公告)号：US11223311B2
公开(公告)日：2022-01-11
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
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.
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公开(公告)号：US11356047B2
公开(公告)日：2022-06-07
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.
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公开(公告)号：US11152883B2
公开(公告)日：2021-10-19
申请号：US16997393
申请日：2020-08-19
Applicant: DENSO CORPORATION
Inventor： Jun Ishida , Makoto Taniguchi
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.
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Patent Agency Ranking
公开(公告)号：US11038456B2
公开(公告)日：2021-06-15
申请号：US16722599
申请日：2019-12-20
Applicant: DENSO CORPORATION
Inventor： Jun Ishida , Makoto Taniguchi
Abstract: A control apparatus is provided to control a rotating electric machine whose number of poles is switched from a pre-switching number of poles to a post-switching number of poles. The control apparatus includes a pre-switching control unit, a post-switching control unit and a transition control unit. The pre-switching control unit controls the torque generated by the machine before the switching of the number of poles. The post-switching control unit controls the torque generated by the machine after the switching. During a pole-number switching period, the transition control unit controls electric currents flowing in stator coils of the machine or voltages applied to the stator coils to make each magnetic pole formed with control by the pre-switching control unit not coincident with any magnetic pole formed with control by the post-switching control unit and having the same polarity as the magnetic pole formed with the control by the pre-switching control unit.
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公开(公告)号：US10608566B2
公开(公告)日：2020-03-31
申请号：US15746531
申请日：2016-07-21
Applicant: DENSO CORPORATION
Inventor： Jun Ishida , Hideaki Nakayama
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.
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公开(公告)号：US09874461B2
公开(公告)日：2018-01-23
申请号：US14887888
申请日：2015-10-20
Applicant: DENSO CORPORATION
Inventor： Jun Ishida , Kiyoshi Fujii
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.
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公开(公告)号：US10707778B2
公开(公告)日：2020-07-07
申请号：US16260802
申请日：2019-01-29
Applicant: DENSO CORPORATION
Inventor： Kosuke Kondo , Yoo Tanaka , Jun Ishida
Abstract: In a control apparatus, a controller performs 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.
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公开(公告)号：US09172317B2
公开(公告)日：2015-10-27
申请号：US14156867
申请日：2014-01-16
Applicant: DENSO CORPORATION
Inventor： Jun Ishida , Tomoya Takahashi
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。
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