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141. 发明申请

US20040245949A1 Motor driving apparatus 失效
标题翻译：电机驱动装置
公开(公告)号：US20040245949A1
公开(公告)日：2004-12-09
申请号：US10834988
申请日：2004-04-30
发明人： Mitsuo Ueda , Hideki Nakata
IPC分类号： H02P005/28
CPC分类号： H02P6/182 , H02P6/15 , H02P21/0089
摘要： A motor driving apparatus comprises an inverter circuit for converting an output voltage of a power supply into a three-phase AC and outputting the same to the brushless motor; a rotor position estimation unit for estimating a rotor position of the brushless motor; and an inverter control unit for controlling the inverter circuit so that the brushless motor is driven by a current based on the estimated rotor position. The inverter control unit determines an advance angle of the current supplied to the brushless motor with respect to the estimated rotor position so as to minimize a deviation between a command rpm and an actual rpm. Therefore, it is possible to perform stable weak field control for the brushless motor, independently from the input voltage of the inverter circuit, without using predetermined control variables such as table values.
摘要翻译：电动机驱动装置包括：逆变器电路，用于将电源的输出电压转换为三相AC并将其输出到无刷电动机; 用于估计无刷电动机的转子位置的转子位置估计单元; 以及逆变器控制单元，用于控制逆变器电路，使得基于所估计的转子位置的电流来驱动无刷电动机。逆变器控制单元确定提供给无刷电动机的电流相对于估计的转子位置的提前角度，以使命令rpm和实际rpm之间的偏差最小化。因此，无需使用诸如表值的预定控制变量，可以独立于逆变器电路的输入电压，对无刷电动机进行稳定的弱磁场控制。

142. 发明授权

US5298848A Large capacity variable speed PWM spatial vector type sub-harmonic system for driving AC electric motor 失效
标题翻译：用于驱动交流电动机的大容量变速PWM空间矢量型子谐波系统
公开(公告)号：US5298848A
公开(公告)日：1994-03-29
申请号：US797956
申请日：1991-11-26
申请人： Shigeta Ueda , Takashi Ikimi , Mitsuyuki Hombu , Noboru Ogawa , Yorito Jifuku , Kenzo Kamiyama
发明人： Shigeta Ueda , Takashi Ikimi , Mitsuyuki Hombu , Noboru Ogawa , Yorito Jifuku , Kenzo Kamiyama
IPC分类号： H02M5/45 , H02M7/515 , H02M7/521 , H02M7/527 , H02P27/06 , H03K17/0814 , H02P7/00
CPC分类号： H03K17/08144 , H02M5/4505 , H02M7/527 , H02P21/0089 , H02P21/02 , H02P21/06 , H03K2217/0081
摘要： A large capacity (1-2 MkVA) driving system for variable-speed-driving an AC motor by a power converter (inverter, converter) in which GTO (gate turn-off) thyristors are used as switching devices. In this system, high frequency GTO thyristors are connected in series, power converters are multiplexed, the AC motor is used in its plural phases, instantaneous spatial vector PWM (pulse width modulation) control is performed, vector control for the motor is performed, and a circuit for recovering snubber energy for GTO thyristors and a power factor adjusting circuit are provided. Thus, this driving system provides a torque ripple of 1% or less, speed response of 60 rad/sec or more, efficiency of 95% or more and a power factor of 98% or more.
摘要翻译：用于使用GTO（闸极关断）晶闸管作为开关装置的功率转换器（逆变器，转换器）来驱动交流电动机的大容量（1-2MkVA）驱动系统。在该系统中，高频GTO晶闸管串联连接，电源转换器多路复用，交流电机用于多相，进行瞬时空间矢量PWM（脉宽调制）控制，执行电机矢量控制，提供了用于恢复GTO晶闸管的缓冲能量的电路和功率因数调节电路。因此，该驱动系统提供1％以下的转矩脉动，60rad / sec以上的速度响应，95％以上的效率和98％以上的功率因数。

143. 发明授权

US820649A Electric machine and system. 失效
标题翻译：电机及系统。
公开(公告)号：US820649A
公开(公告)日：1906-05-15
申请号：US1904222097
申请日：1904-08-25
申请人： KNOPFE FREDERICK W
发明人： KNOPFE FREDERICK W
CPC分类号： H02P21/0089 , Y10T307/522

144. 发明授权

US606912A blathy 失效
公开(公告)号：US606912A
公开(公告)日：1898-07-05
申请号：US606912D
CPC分类号： H02P21/0089

145. 发明授权

US11711039B2 Motor drive apparatus 有权
公开(公告)号：US11711039B2
公开(公告)日：2023-07-25
申请号：US17770638
申请日：2019-12-03
申请人： Mitsubishi Electric Corporation
发明人： Kenji Takahashi , Shinya Toyodome , Mitsuo Kashima , Tomohiro Kutsuki
IPC分类号： F25B49/02 , H02P21/18 , H02P21/22 , H02P21/00
CPC分类号： H02P21/18 , H02P21/0089 , H02P21/22
摘要： A motor drive apparatus includes: a dq-axis current controller converting phase current flowing through a synchronous motor into d-axis current and q-axis current, and controlling the phase current by determining a voltage command based on the d-axis current and a d-axis current command as well as the q-axis current and a q-axis current command; a voltage amplitude calculating unit obtaining voltage amplitude; a speed controller controlling rotational speed of the motor by determining the q-axis current command based on a speed command, the rotational speed, and a speed droop amount that reduces the speed command; a flux weakening controller performing flux control to limit amplitude of voltage output to the motor by determining the d-axis current command based on the voltage amplitude and a first voltage limit value; and a speed droop controller controlling the speed droop amount based on the voltage amplitude and a second voltage limit value.

146. 发明授权

US10622870B2 Operating point determination in an electric motor system 有权
公开(公告)号：US10622870B2
公开(公告)日：2020-04-14
申请号：US15189963
申请日：2016-06-22
申请人： Faraday & Future Inc.
发明人： Mengwei Campbell , Stefan Grubic
IPC分类号： H02P21/14 , H02K11/24 , H02P21/22 , H02P21/00 , H02P101/45
CPC分类号： H02K11/24 , H02P21/0089 , H02P21/22 , H02P2101/45
摘要： Systems and methods are described for controlling an electric motor. An exemplary system may include a torque detector configured to detect an output torque of the electric motor. The system may also include a controller configured to control a voltage source to apply a predetermined voltage to drive the electric motor and determine an operating table containing a plurality of operating points. The controller may select an operating current value and generate a plurality of current commands. The controller may also apply each of the plurality of current commands to drive the electric motor and determine an output torque generated by the electric motor. The controller may further determine a target current command that generates a maximum output torque. In addition, the controller may determine an operating point of the operating table based on the target current command. Moreover, the controller may control the electric motor using the operating table.

147. 发明申请

US20190013752A1 SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20190013752A1
公开(公告)日：2019-01-10
申请号：US16129656
申请日：2018-09-12
申请人： CANON KABUSHIKI KAISHA
发明人： Yuta Nito
IPC分类号： H02P8/14 , H02P21/00 , H02P21/26 , B65H7/02 , H02P21/24 , B41J11/00 , G03G15/00 , B65H5/06 , B65H9/00
CPC分类号： H02P8/14 , B41J11/007 , B65H5/062 , B65H7/02 , B65H9/006 , B65H2301/44318 , B65H2511/212 , B65H2515/32 , B65H2515/704 , B65H2801/03 , B65H2801/06 , G03G15/6529 , G03G15/6567 , H02P21/0089 , H02P21/24 , H02P21/26 , Y02P70/20 , Y02P70/30 , B65H2220/01 , B65H2220/02
摘要： A sheet conveying apparatus for conveying a sheet includes a conveyance roller, a motor, a phase determiner, and a controller. The phase determiner determines a rotor rotation phase of the motor that drives the conveyance roller to convey the sheet. The controller controls so that a value of a rotor torque current component becomes a target value of the torque current component and controls so that an excitation current component value becomes a target value of the excitation current component, and controls to reduce a deviation between a command phase and the determined rotation phase. The controller controls so that a magnetic flux penetrating through a winding is weaker than a magnetic flux of the rotor, and so that a magnetic flux penetrating through the winding in a second period is stronger than the magnetic flux penetrating through the winding in the first period.

148. 发明申请

US20190006975A1 Induction Machine Having a Customized Field-Forming Current Component 审中-公开
公开(公告)号：US20190006975A1
公开(公告)日：2019-01-03
申请号：US16019660
申请日：2018-06-27
申请人： Siemens Aktiengesellschaft
发明人： Joerg Reh , Carsten SPINDLER , Dietmar STOIBER , Bernd WEDEL
IPC分类号： H02P21/22 , H02P21/08 , H02P21/12
CPC分类号： H02P21/22 , H02P21/0089 , H02P21/08 , H02P21/12
摘要： An induction machine includes a stator and a rotor, wherein a stator winding is arranged within the stator, a control device controls a converter such that the converter connects the stator winding to a power-supply network such that a stator current flows within the stator winding, and the stator current has a field-forming current component and a torque-forming current component, where the control device controls the converter such that, during load periods, a torque acts between the stator and the rotor, controls the converter during periods of rest such that a torque acts between the stator and the rotor, controls the converter at least at the beginning of the periods of rest such that the field-forming current component has a nominal value, and controls the converter during the load periods such that the field-forming current component has a lower value than the nominal value.

149. 发明申请

US20180152126A1 SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20180152126A1
公开(公告)日：2018-05-31
申请号：US15807457
申请日：2017-11-08
申请人： CANON KABUSHIKI KAISHA
发明人： Yuta Nito
IPC分类号： H02P8/14 , G03G15/00 , B65H5/06 , B65H9/00 , B41J11/00 , H02P21/24
CPC分类号： H02P8/14 , B41J11/007 , B65H5/062 , B65H7/02 , B65H9/006 , B65H2301/44318 , B65H2511/212 , B65H2515/32 , B65H2515/704 , B65H2801/03 , B65H2801/06 , G03G15/6529 , G03G15/6567 , H02P21/0089 , H02P21/24 , H02P21/26 , Y02P70/20 , Y02P70/30 , B65H2220/01 , B65H2220/02
摘要： A sheet conveying apparatus for conveying a sheet includes a conveyance roller, a motor, a phase determiner, and a controller. The phase determiner determines a rotor rotation phase of the motor that drives the conveyance roller to convey the sheet. The controller controls so that a value of a rotor torque current component becomes a target value of the torque current component and controls so that an excitation current component value becomes a target value of the excitation current component, and controls to reduce a deviation between a command phase and the determined rotation phase. The controller controls so that a magnetic flux penetrating through a winding is weaker than a magnetic flux of the rotor, and so that a magnetic flux penetrating through the winding in a second period is stronger than the magnetic flux penetrating through the winding in the first period.

150. 发明申请

US20180109217A1 SYNCHRONOUS MOTOR CONTROL CIRCUIT AND CONTROL METHOD 审中-公开
公开(公告)号：US20180109217A1
公开(公告)日：2018-04-19
申请号：US15479295
申请日：2017-04-05
申请人： DELTA ELECTRONICS, INC.
发明人： Yu-Ling LEE , Ming-Tsung CHEN , Tung-Chin HSIEH
IPC分类号： H02P21/00 , H02P6/08
CPC分类号： H02P21/0089
摘要： A control method for controlling a synchronous motor includes calculating d-axis and q-axis current commands according to a frequency command and frequency of the synchronous motor by a MTPA control unit; when a feedback output voltage of the synchronous motor is larger than a control level, outputting a flux-weakening current command by a voltage control unit; calculating a flux-weakening current feed-forward value according to the frequency, a target level and the q-axis current command by a feed-forward control unit; when the sum of the flux-weakening current command and the flux-weakening current feed-forward value is smaller than the d-axis current command, adjusting the d-axis current command by the sum of the flux-weakening current command and the flux-weakening current feed-forward value; and outputting d-axis and q-axis voltage commands according to the adjusted d-axis current command and the q-axis current command to control the synchronous motor.

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