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1. 发明授权

US10804765B2 Electromechanical integral motor 有权
公开(公告)号：US10804765B2
公开(公告)日：2020-10-13
申请号：US15779296
申请日：2016-11-04
申请人： HITACHI, LTD.
发明人： Hisashi Tanie , Yoshitaka Iwaji , Yuji Enomoto , Hirooki Tokoi , Takayoshi Nakamura , Naoki Sakurai , Fusao Houjyou , Kohei Matsushita
IPC分类号： H02K5/24 , H02K5/18 , H02K11/25 , H02K11/33 , H02K11/38 , H02K1/27
摘要： A highly reliable electromechanical integral motor is provided. In the electromechanical integral motor including an axial gap type motor and a power conversion control device, the power conversion control device is mounted on an end bracket portion of the motor. Additionally, a space is provided between the end bracket portion of the motor and the power conversion control device. Further, the end bracket portion of the motor and the power conversion control device are fixed by a plurality of fixing members, and at least one set of the plurality of fixing members is disposed to be spaced apart from each other.

2. 发明授权

US10658960B2 Motor control system and motor control method 有权
公开(公告)号：US10658960B2
公开(公告)日：2020-05-19
申请号：US16327607
申请日：2016-09-21
申请人： Hitachi, Ltd.
发明人： Satoshi Sumita , Yoshitaka Iwaji
IPC分类号： H02P21/22 , H02P27/12 , H02P21/13 , B65H54/02 , B66B1/30 , F04B35/04 , H02P27/06 , H02P23/14
摘要： Disclosed are a motor control system and a motor control method that allow the balance of evaluation values in a trade-off relationship to be easily adjusted. The motor control system includes: an inverter (5) that applies AC voltage to a motor (1); a control unit (3, 4) that generates a voltage command for AC voltage in response to a control command; and a feedback unit (6, 7, 8) that applies a correction value to the control unit. The feedback unit estimates a plurality of evaluation values from a state quantity using a plurality of regression formulas, where at least one state quantity (x1, x2) of the motor is an input variable and a plurality of evaluation values (y1, y2) of the motor or a motor-driven object (2) are output variables, calculates an evaluation function with the estimated plurality of evaluation values as arguments, and generates a correction command on the basis of a calculation value resulting from the evaluation function.

3. 发明授权

US10505490B2 Motor control system 有权
公开(公告)号：US10505490B2
公开(公告)日：2019-12-10
申请号：US16076752
申请日：2016-02-19
申请人： Hitachi, Ltd.
发明人： Satoshi Sumita , Yoshitaka Iwaji
IPC分类号： H02P27/06 , H02P21/18 , H02P21/22 , H02P21/00 , H02P21/14 , H02P29/024 , H02P25/026
CPC分类号： H02P27/06 , H02P21/0021 , H02P21/14 , H02P21/18 , H02P21/22 , H02P29/0241 , H02P25/026
摘要： The invention is directed to omit an adjustment work of a motor control system and increase versatility. Provided is a motor control system including: an inverter which outputs a voltage to a motor based on a voltage command; a current detecting unit which outputs a current detection value based on a current flowing through the motor of a state quantity detecting unit; a voltage command calculating unit which outputs the voltage command of the state quantity detecting unit based on the high-order command and the current detection value of the state quantity detecting unit; a storage unit which outputs a data set of the quantity of state of the state quantity detecting unit based on the quantity of state of a driving target of the motor of the state quantity detecting unit; an abnormality degree calculation equation updating unit which outputs an abnormality degree calculation equation for computing the abnormality degree of the driving target of the state quantity detecting unit based on the data set of the state quantity detecting unit; an abnormality degree calculating unit which outputs the abnormality degree based on the quantity of state of the state quantity detecting unit and the abnormality degree calculation equation of the state quantity detecting unit; and a voltage adjusting unit which outputs an adjustment voltage for adjusting the voltage command of the state quantity detecting unit based on the abnormality degree of the state quantity detecting unit.

4. 发明申请

US20150222167A1 Linear Motor and Linear Motor Drive System 有权
标题翻译：直线电机和直线电机驱动系统
公开(公告)号：US20150222167A1
公开(公告)日：2015-08-06
申请号：US14424300
申请日：2013-10-23
申请人： Hitachi, Ltd.
发明人： Yasuaki Aoyama , Akiyoshi Komura , Yoshitaka Iwaji
IPC分类号： H02K41/03
CPC分类号： H02K41/031 , H02K16/02 , H02K2213/03 , H02K2213/12
摘要： A linear motor is capable of miniaturization of a device, sharing of effective magnetic fluxes between the magnetic poles adjacent to each other, and decreasing a magnetic attractive force acting between a mover and an armature, and a linear motor drive system. The linear motor includes a mover, formed by lining up a plurality of pieces of permanent magnets or magnetic materials while inversing a magnetization direction thereof, and an armature. First and second magnetic pole teeth are disposed in such a way as to vertically tuck the permanent magnet or the magnetic material. A magnetic material links the first magnetic pole tooth to the second magnetic pole tooth, thereby forming a path for a magnetic flux, and windings are disposed on the first magnetic pole tooth and the second magnetic pole tooth, respectively. At least two units of the armatures are lined to be linked to each other.
摘要翻译：线性电动机能够使装置小型化，在彼此相邻的磁极之间共享有效的磁通量，并且减小作用在动子和电枢之间的磁性吸引力，以及线性电动机驱动系统。线性电动机包括通过将多个永磁体或磁性材料排列而使其磁化方向反转而形成的动子和电枢。第一和第二磁极齿以垂直方式将永久磁铁或磁性材料卷起的方式设置。磁性材料将第一磁极齿连接到第二磁极齿，由此形成用于磁通的路径，并且绕组分别设置在第一磁极齿和第二磁极齿上。衔铁的至少两个单元排列成彼此连接。

5. 发明授权

US10608561B2 Control device of AC motor 有权
公开(公告)号：US10608561B2
公开(公告)日：2020-03-31
申请号：US15741787
申请日：2015-07-10
申请人： Hitachi, Ltd.
发明人： Satoshi Sumita , Yoshitaka Iwaji
IPC分类号： H02H7/122 , H02P1/42 , G01P3/48 , B60K6/26 , H02P6/16 , H02P27/06 , H02M1/12 , H02M7/5387
摘要： Provided is a control device of an AC motor, including: an inverter including a switching element; switching control means for controlling the switching element; and phase detection means for detecting a rotor phase of an AC motor, wherein the switching control means controls the switching element so that a voltage waveform of the inverter has half-wave symmetry in an interval of a width centering on a fundamental voltage phase of 180 deg±180 deg, the switching control means controls the switching element so that a harmonic voltage phase of the inverter becomes variable on the basis of a fundamental voltage-rotor phase difference which is a difference between a fundamental voltage phase and the rotor phase of the AC motor, and the switching control means controls the switching element so that a harmonic voltage amplitude of each order of the inverter is inversely proportional to the order.

6. 发明授权

US09712032B2 Linear motor and linear motor drive system 有权
公开(公告)号：US09712032B2
公开(公告)日：2017-07-18
申请号：US14424300
申请日：2013-10-23
申请人： Hitachi, Ltd.
发明人： Yasuaki Aoyama , Akiyoshi Komura , Yoshitaka Iwaji
IPC分类号： H02K41/03 , H02K16/02
CPC分类号： H02K41/031 , H02K16/02 , H02K2213/03 , H02K2213/12
摘要： A linear motor is capable of miniaturization of a device, sharing of effective magnetic fluxes between the magnetic poles adjacent to each other, and decreasing a magnetic attractive force acting between a mover and an armature, and a linear motor drive system. The linear motor includes a mover, formed by lining up a plurality of pieces of permanent magnets or magnetic materials while inversing a magnetization direction thereof, and an armature. First and second magnetic pole teeth are disposed in such a way as to vertically tuck the permanent magnet or the magnetic material. A magnetic material links the first magnetic pole tooth to the second magnetic pole tooth, thereby forming a path for a magnetic flux, and windings are disposed on the first magnetic pole tooth and the second magnetic pole tooth, respectively. At least two units of the armatures are lined to be linked to each other.

7. 发明授权

US11233474B2 Rotating machine drive system 有权
公开(公告)号：US11233474B2
公开(公告)日：2022-01-25
申请号：US16977177
申请日：2018-12-11
申请人： Hitachi, Ltd.
发明人： Akeshi Takahashi , Yoshitaka Iwaji , Shinji Sugimoto
IPC分类号： H02P27/06 , H02P25/18
摘要： A rotating machine drive system includes: a rotating machine that includes a plurality of windings; a phase current detecting circuit that detects a phase current to be supplied to the rotating machine; an inverter device that includes an inverter circuit that converts DC power from a DC power supply into AC power, and a control device that controls power conversion being performed by an inverter main circuit on the basis of the phase current detected by the phase current detecting circuit, the inverter device operating the rotating machine at a variable speed; and a winding switching device that switches connections of the plurality of windings in accordance with a command from the control device. In a case where the rotation zone of the rotating machine is to be changed, the control device stops the current supply from the inverter circuit to the rotating machine, and switches the rotation zone of the rotating machine from a low-speed rotation zone to a high-speed rotation zone, or from the high-speed rotation zone to the low-speed rotation zone, on condition that a line internal voltage induced by a field magnetic flux of the rotating machine is lower than the DC voltage of the DC power supply.

8. 发明授权

US09350284B2 Power conversion device 有权
标题翻译：电源转换装置
公开(公告)号：US09350284B2
公开(公告)日：2016-05-24
申请号：US14355452
申请日：2012-10-22
申请人： Hitachi, Ltd.
发明人： Toshifumi Sakai , Koichiro Nagata , Yoshitaka Iwaji , Motomi Shimada
IPC分类号： H02M7/00 , H02P27/08 , H02P23/04 , H02P21/05 , H02P23/00 , H02P27/06 , H02P9/10
CPC分类号： H02P23/04 , H02P9/102 , H02P21/05 , H02P21/22 , H02P27/06
摘要： In a system for driving an electric motor by an engine generator, there is a possibility that oscillation and d-axis current are increased. In an engine generator system, a power converter (105) controls a generator (104) so that the phase of an oscillating component included in the d-axis current in the rotor magnetic flux direction of the generator (104) advances by 90 degrees or more with respect to the phase of an oscillating component of the identical frequency included in the rotating electric angular frequency of the generator (104), and further using q-axis voltage adjusting device (118) so that the phase of an oscillating component included in the q-axis current advances by 90 degrees or more with respect to the phase of an oscillating component of the identical frequency included in the rotating electric angular frequency of the generator (104).
摘要翻译：在用于通过发动机发电机驱动电动机的系统中，存在振荡和d轴电流增加的可能性。在发动机发电机系统中，功率转换器（105）控制发电机（104），使得包括在发电机（104）的转子磁通方向上的d轴电流中的振荡分量的相位前进90度或更多地涉及包括在发电机（104）的旋转电角频率中的相同频率的振荡分量的相位，并且还使用q轴电压调节装置（118），使得包括在相对于包含在发电机（104）的旋转电角频率中的相同频率的振荡分量的相位，q轴电流前进90度以上。

9. 发明申请

US20140340005A1 Power Conversion Device 有权
标题翻译：电源转换装置
公开(公告)号：US20140340005A1
公开(公告)日：2014-11-20
申请号：US14355452
申请日：2012-10-22
申请人： Hitachi, Ltd.
发明人： Toshifumi Sakai , Koichiro Nagata , Yoshitaka Iwaji , Motomi Shimada
IPC分类号： H02P23/04 , H02P23/00 , H02P27/06
CPC分类号： H02P23/04 , H02P9/102 , H02P21/05 , H02P21/22 , H02P27/06
摘要： In a system for driving an electric motor by an engine generator, there is a possibility that the effects of harmonics and DC voltage fluctuations of a power converter cause shaft oscillation to increase due to a phenomenon in which current pulsations caused by voltage disturbances at a d-axis and a q-axis are strengthened each other and thus oscillation and d-axis current are increased under the effect of interference between the d-axis and the q-axis. In an engine generator system, a power converter (105) controls a generator (104) by regulating the d-axis voltage Vd* by an amount of ΔVd* using d-axis voltage adjusting means (117) so that the phase of an oscillating component included in the d-axis current in the rotor magnetic flux direction of the generator (104) advances by 90 degrees or more with respect to the phase of an oscillating component of the identical frequency included in the rotating electric angular frequency of the generator (104), and further by regulating the q-axis voltage Vq* by an amount of ΔVq* using q-axis voltage adjusting means (118) so that the phase of an oscillating component included in the q-axis current advances by 90 degrees or more with respect to the phase of an oscillating component of the identical frequency included in the rotating electric angular frequency of the generator (104).
摘要翻译：在用于通过发动机发电机驱动电动机的系统中，存在电力转换器的谐波和直流电压波动的影响引起轴振荡的可能性，这是由于由d的电压扰动引起的电流脉动的现象轴和q轴彼此相互增强，因此在d轴和q轴之间的干涉的作用下振荡和d轴电流增加。在发动机发电机系统中，电力转换器（105）通过使用d轴电压调节装置（117）将d轴电压Vd *调节一定量的Dgr; Vd *来控制发电机（104），使得相位包括在发电机（104）的转子磁通方向上的d轴电流中的振荡分量相对于包含在发电机（104）的旋转电角频率中的相同频率的振荡分量的相位前进90度以上发电机（104），并且通过使用q轴电压调节装置（118）将q轴电压Vq *调整为＆Dgr; Vq *的量，使得包括在q轴电流中的振荡分量的相位前进相对于包含在发电机（104）的旋转电角频率中的相同频率的振荡分量的相位相差90度以上。

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