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公开(公告)号：US10998838B2
公开(公告)日：2021-05-04
申请号：US16317230
申请日：2017-07-10
Applicant: DENSO CORPORATION
Inventor： Takuro Nakaoka , Kiyoshi Fujii
Abstract: A rotor position judging unit detects a rotor position by utilizing induced voltages generated at respective phases of an armature winding. While a field current flowing through a field winding rises toward a target value (while the field current temporally changes), induced voltages are generated at the respective phases of the armature winding by temporal differentiation of a magnetic flux which interlinks with the armature winding. The rotor position judging unit detects the rotor position (d-axis of a rotor) on a basis of a table containing combination of amplitude ratios and polarities of the induced voltages generated at the respective phases.
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公开(公告)号：US10103671B2
公开(公告)日：2018-10-16
申请号：US15545263
申请日：2016-01-22
Applicant: DENSO CORPORATION
Inventor： Kiyoshi Fujii
Abstract: In a control apparatus for a rotary electric machine, a first manipulation unit manipulates, as control for a predetermined first region with respect to the controlled variable, a voltage phase of a voltage vector applied to an armature winding while controlling a field current to cause a deviation between an amplitude of an induced voltage and an amplitude of a predetermined voltage to be equal to or smaller than a predetermined value, the induced voltage being generated in the armature winding based on rotation of the rotor, the predetermined voltage being applied to the armature winding; A second manipulation unit that manipulates, as control for a second region that is larger than the first region, the field current such that the controlled variable is controlled to the target value.
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公开(公告)号：US09762156B2
公开(公告)日：2017-09-12
申请号：US15331138
申请日：2016-10-21
Applicant: DENSO CORPORATION
Inventor： Kiyoshi Fujii , Ryosuke Utaka
Abstract: A rotating electric machine is applied to a multilayer winding-type rotating electric machine including a stator and a rotor. The stator includes an armature winding. The rotor includes at least one of a field winding and a permanent magnet for generating a magnetic field that have characteristics of magnetic flux of a non-sinusoidal waveform in relation to a rotation angle of the rotor. The armature winding has winding groups. Each of the winding groups has coils that are connected to an actual neutral point provided for each winding group, and has a first winding group and a second winding group that have a phase difference. A control apparatus detects a rotation angle based on a voltage at the actual neutral point of the first winding group and a voltage at the actual neutral point of the second winding group, and controls the rotating electric machine based on the rotation angle.
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公开(公告)号：US09748883B2
公开(公告)日：2017-08-29
申请号：US15018273
申请日：2016-02-08
Applicant: DENSO CORPORATION
Inventor： Kazutoshi Shiomi , Hideaki Nakayama , Kiyoshi Fujii
IPC: H02P21/00 , H02P25/022 , H02P9/08
CPC classification number: H02P25/022 , H02P9/08 , H02P25/024
Abstract: A rotating electrical machine has a rotor having a field winding and a stator having an armature winding. A control device adjusts a field current flowing in the field winding and an armature current flowing in the armature winding. The armature current flowing in the armature winding is expressed by using a current vector having a d-axis current and a q-axis current in a d-q coordinate system. In a case in which the control device increases the d-axis current to generate a magnetic flux in a direction which is opposite to a direction to generate a magnetic flux by a field current, the control device gradually reduces the d-axis current during a predetermined period of time after increasing the d-axis current in the direction opposite to the direction to generate the magnetic flux by the field current.
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公开(公告)号：US09093932B2
公开(公告)日：2015-07-28
申请号：US14140922
申请日：2013-12-26
Applicant: DENSO CORPORATION
Inventor： Akimasa Osaki , Kiyoshi Fujii , Hideki Kabune , Kouichi Nakamura
Abstract: In a system, a triangular carrier wave is compared in magnitude with first and second two-phase modulated command signals. Based on a result of the comparison, on-off operations of the high- and low-side switching elements of two phases of a three-phase inverter corresponding to the first and second two-phase modulated command signals are performed while the high- and low-side switching elements of the remaining phase of the three-phase inverter is fixed to be on or off. A value of a current flowing through a first or second bus connected between a DC power source and the three-phase inverter is measured when a local peak of the triangular carrier signal occurs while none of the high-side switching elements of all the three-phases are on or none of the low-side switching elements of all the three-phases are on.
Abstract translation: 在一个系统中，三角载波的大小与第一和第二两相调制命令信号进行比较。 基于比较的结果，执行与第一和第二两相调制命令信号相对应的三相逆变器的两相的高侧和低侧开关元件的开 - 关操作， 三相逆变器的剩余相的低侧开关元件被固定为开或关。 当三角载波信号的局部峰值出现时，测量流过连接在直流电源和三相逆变器之间的第一或第二总线的电流的值，而所有三相载波信号的高侧开关元件没有一个， 所有三相的低侧开关元件都接通或不接通。
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Patent Agency Ranking
公开(公告)号：US09112436B2
公开(公告)日：2015-08-18
申请号：US13867367
申请日：2013-04-22
Applicant: DENSO CORPORATION
Inventor： Kiyoshi Fujii , Akimasa Osaki , Hideki Kabune , Koichi Nakamura
Abstract: In a system for controlling a controlled variable of a rotary machine having plural-phase input terminals of the rotary machine in which plural-phase AC power is applied from an AC power applying module to the input terminals, a command-voltage setting module sets, based on a request value for the controlled variable, plural-phase AC command voltages for the plural-phase AC power as a feedforward manipulated variable. A current obtaining module obtains plural-phase AC currents flowing in the respective plural-phase input terminals of the rotary machine. An amplitude correcting module corrects the amplitude of at least one of the plural-phase AC command voltages based on the magnitudes of the plural-phase AC currents.
Abstract translation: 在用于控制具有从交流电力施加模块向输入端施加多相交流电力的旋转机械的多相输入端子的旋转机械的控制变量的系统中，指令电压设定模块， 基于控制变量的请求值，将作为前馈操作量的多相AC电力的多相AC指令电压。 电流获取模块获得在旋转机器的各个多相输入端子中流动的多相AC电流。 振幅校正模块基于多相AC电流的大小校正多相AC指令电压中的至少一个的振幅。
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公开(公告)号：US08907602B2
公开(公告)日：2014-12-09
申请号：US13959901
申请日：2013-08-06
Applicant: Denso Corporation
Inventor： Yasuhiko Mukai , Kiyoshi Fujii
Abstract: In a control apparatus of a rotating device, a voltage command value setting section sets terminal command values on the basis of a command value of a control amount of the rotating device. Individual correcting sections calculate feedback operation amounts on the basis of history information of electric currents flowing in respective terminals of the rotating device and corrects the terminal voltage command values with the feedback operation amounts. A prohibiting section prohibits difference corresponding amounts, which correspond to differences of the feedback operation amounts and an average of the feedback operation amounts, from being reflected in correcting the terminal voltage command values with maintaining polarities when a determining section determines that it is a switching time from one of a power-running control and a regeneration control to the other.
Abstract translation: 在旋转装置的控制装置中，电压指令值设定部基于旋转装置的控制量的指令值来设定终端指令值。 各个校正部根据在旋转装置的各个端子中流动的电流的历史信息来计算反馈操作量，并用反馈操作量校正端子电压指令值。 禁止部分禁止与反馈操作量的差异和反馈操作量的平均值相对应的差异对应量反映在当确定部分确定其是切换时间时以维持极性校正端子电压指令值 从动力运行控制和再生控制中的一个到另一个。
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公开(公告)号：US09948220B2
公开(公告)日：2018-04-17
申请号：US15653992
申请日：2017-07-19
Applicant: DENSO CORPORATION
Inventor： Kiyoshi Fujii , Atsuyuki Hiruma
CPC classification number: H02P6/185 , G05B2219/37523 , G05B2219/42148 , G05B2219/50191 , H02P6/18 , H02P21/26 , H02P25/03 , H02P25/22 , H02P2203/11
Abstract: A rotation angle estimation apparatus includes: a high-frequency voltage setting unit that sets high-frequency voltages; a circuit operating unit that operates an electric power conversion circuit to apply each of the high-frequency voltages to a corresponding one of winding groups of a rotating electric machine; and a rotation angle estimating unit that estimates a rotation angle of the rotating electric machine based on at least one of high-frequency currents that flow in the winding groups upon application of the high-frequency voltages to the winding groups. Moreover, the high-frequency voltage setting unit sets the high-frequency voltages based on the spatial phase difference between the winding groups so that in a fixed coordinate system of the rotating electric machine, the magnitude of a resultant vector of a plurality of high-frequency voltage vectors, which are respectively applied to the winding groups, becomes smaller than the magnitude of each of the high-frequency voltage vectors.
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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：US09847744B2
公开(公告)日：2017-12-19
申请号：US14919152
申请日：2015-10-21
Applicant: DENSO CORPORATION
Inventor： Kiyoshi Fujii , Hideaki Nakayama
CPC classification number: H02P21/22 , B60L15/025 , B60L15/2045 , B60L2220/54 , B60L2240/427 , B60L2240/527 , B60L2240/529 , H02P21/0003 , H02P21/20 , H02P25/22 , H02P27/06 , Y02T10/641 , Y02T10/643 , Y02T10/72 , Y02T10/7283
Abstract: A control unit applied to a motor that includes a rotor having a field winding and a rotor having armature winding groups to control a field current passed through the field winding. Each of the armature winding groups is applied with a prescribed voltage. The field current is controlled so as to be a minimum field current value If_min with which a deviation between an amplitude of an induced voltage generated in the armature winding groups by rotation of the rotor, and an amplitude of the voltage applied to the armature winding groups becomes equal to or smaller than a prescribed value.
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