公开(公告)号：US11784598B2

公开(公告)日：2023-10-10

申请号：US17681787

申请日：2022-02-27

申请人： Turntide Technologies Inc.

发明人： Trevor A. Creary ,  Mahesh Krishnamurthy ,  Piyush C. Desai ,  Mark Johnston ,  Timothy Knodel

IPC分类号： H02P25/08 ,  H02P25/089 ,  H02P25/092

CPC分类号： H02P25/089 ,  H02P25/092 ,  H02P2203/01 ,  H02P2205/01

摘要： A method and apparatus for quasi-sensorless adaptive control of a high rotor pole switched-reluctance motor (HRSRM). The method comprises the steps of: applying a voltage pulse to an inactive phase winding and measuring current response in each inactive winding. Motor index pulses are used for speed calculation and to establish a time base. Slope of the current is continuously monitored which allows the shaft speed to be updated multiple times and to track any change in speed and fix the dwell angle based on the shaft speed. The apparatus for quasi-sensorless control of a high rotor pole switched-reluctance motor (HRSRM) comprises a switched-reluctance motor having a stator and a rotor, a three-phase inverter controlled by a processor connected to the switched-reluctance motor, a load and a converter.

公开(公告)号：US09755562B2

公开(公告)日：2017-09-05

申请号：US14757846

申请日：2015-12-24

申请人： KABUSHIKI KAISHA YASKAWA DENKI

发明人： Akira Yamazaki ,  Yoichi Yano

IPC分类号： H02P27/04 ,  H02P27/08 ,  H02P21/06 ,  H02P21/00 ,  H02P27/16

CPC分类号： H02P27/08 ,  H02P21/0021 ,  H02P21/06 ,  H02P27/085 ,  H02P27/16 ,  H02P2205/01 ,  H02P2209/13

摘要： A power convertor includes a power conversion unit, a PWM controller, and a frequency changer. The power conversion unit includes a plurality of switching elements. The PWM controller is configured to perform PWM control of the plurality of switching elements. The frequency changer is configured to change a carrier frequency in the PWM control. The frequency changer includes an outputter, an integrator, and a frequency determiner. The outputter is configured to output a control value in accordance with a control deviation with respect to a control target. The integrator is configured to integrate the control value output from the outputter. The frequency determiner is configured to determine the carrier frequency based on an integral value obtained by the integrator.

公开(公告)号：US20170223903A1

公开(公告)日：2017-08-10

申请号：US15498508

申请日：2017-04-27

申请人： CHANGZHOU GLOBE CO., LTD.

发明人： Sili Meng

IPC分类号： A01G3/08 ,  H02P29/032

CPC分类号： A01G3/08 ,  A01G3/037 ,  H02P6/08 ,  H02P29/032 ,  H02P29/40 ,  H02P2205/01

摘要： A method of controlling speed change of a pruning machine including the steps of: pressing a power switch, setting up a power supply system, and sending an activating signal; detecting voltage of the power supply system, and judging whether operation of the power supply system is maintained, sending a maintaining output signal and maintaining the voltage of the power supply system; pressing a speed-regulating trigger button, converting a speed-regulating signal into an electrical signal for speed judgment, at the same time sending a driving signal after detection of a motor position signal, the driving signal being received by a three-phase bridge; using a sampling resistor to convert a current into a voltage signal and inputting the voltage signal into the central processor, and comparing a set current value according to the input voltage signal, thereby controlling the motor to rotate according to a certain proportion, or a maximum power.

公开(公告)号：US09214885B1

公开(公告)日：2015-12-15

申请号：US14314992

申请日：2014-06-25

申请人： Nidec Motor Corporation

发明人： Douglas D. Glenn ,  Christopher D. Schock

IPC分类号： H02P21/00 ,  H02P3/18 ,  D06F33/00 ,  H02P23/00 ,  H02P29/02

CPC分类号： H02P29/027 ,  H02H3/08 ,  H02H3/20 ,  H02H3/24 ,  H02H5/041 ,  H02H7/0838 ,  H02H7/085 ,  H02H7/0852 ,  H02H7/09 ,  H02P3/18 ,  H02P23/0077 ,  H02P27/08 ,  H02P29/0241 ,  H02P2205/01

摘要： An electric motor system having substantially independent hardware-based and software-based pathways for detecting and initiating responses to fault conditions, such as over-current conditions, in an electric motor which is powered by a power inverter which is controlled by a power module and a microprocessor. Each pathway involves comparing a voltage, which is representative of an electric current flowing to the motor, to a predetermined maximum voltage, and if the former exceeds the latter using hardware or software to initiate shutting off the motor, such as by shutting off the power inverter. When one pathway detects a fault condition it may notify the other pathway, and the notified pathway may also initiate shutting off the motor.

摘要翻译： 一种具有基本上独立的基于硬件和基于软件的路径的电动机系统，用于检测和启动对由电力模块控制的电力逆变器供电的电动机中的诸如过电流状况的故障状况的响应，以及 一个微处理器 每个路径包括将表示流过电动机的电流的电压与预定的最大电压进行比较，并且如果前者使用硬件或软件超过后者，则启动关闭电动机，例如通过关闭电源 逆变器。 当一个路径检测到故障状况时，它可以通知另一个路径，并且通知的路径也可以启动关闭电动机。

公开(公告)号：US09093915B2

公开(公告)日：2015-07-28

申请号：US12742117

申请日：2008-11-13

申请人： Masafumi Hashimoto ,  Keisuke Shimatani ,  Hirohito Maeda ,  Satoshi Yagi ,  Motonobu Ikeda

发明人： Masafumi Hashimoto ,  Keisuke Shimatani ,  Hirohito Maeda ,  Satoshi Yagi ,  Motonobu Ikeda

IPC分类号： F25D17/04 ,  H02M5/42 ,  F25B49/02 ,  H02M1/00

CPC分类号： H02M5/42 ,  F25B49/022 ,  F25B49/025 ,  F25B2600/021 ,  F25B2700/00 ,  F25B2700/15 ,  F25B2700/151 ,  H02M2001/0009 ,  H02P27/06 ,  H02P2205/01

摘要： A motor current detecting device includes a first wire, an instantaneous current detecting unit, an average electric current detecting unit, and a calculation unit. The first wire is configured and arranged to carry flow of a motor current that has been passed through a motor and a drive current that has been passed through a motor drive unit to drive the motor. The instantaneous current detecting unit is configured and arranged to detect an instantaneous value for a sum of the motor current and the drive current flowing on the first wire. The average electric current detecting unit is configured and arranged to detect an average value of the sum of the motor current and the drive current flowing on the first wire. The calculation unit is configured to calculate the motor current on the basis of the instantaneous value and the average value.

摘要翻译： 电动机电流检测装置包括第一线，瞬时电流检测单元，平均电流检测单元和计算单元。 第一线被构造和布置成承载已经通过电动机的电动机电流的流动和已经通过电动机驱动单元驱动电动机的驱动电流。 瞬时电流检测单元被配置和布置成检测电动机电流和在第一导线上流动的驱动电流之和的瞬时值。 平均电流检测单元被配置和设置为检测电动机电流和在第一线路上流动的驱动电流之和的平均值。 计算单元被配置为基于瞬时值和平均值来计算电动机电流。

公开(公告)号：US20140091744A1

公开(公告)日：2014-04-03

申请号：US14039262

申请日：2013-09-27

申请人： DENSO CORPORATION

发明人： Takashi SUZUKI ,  Hirofumi KAKO ,  Takeshi ITOH

IPC分类号： H02P6/12

CPC分类号： H02P6/12 ,  B60L3/0038 ,  B60L3/0061 ,  B60L3/04 ,  B60L7/14 ,  B60L11/005 ,  B60L11/14 ,  B60L15/025 ,  B60L15/2009 ,  B60L2210/40 ,  B60L2220/14 ,  B60L2240/12 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/427 ,  B60L2240/429 ,  B60L2250/24 ,  B60L2250/26 ,  H02P21/14 ,  H02P21/22 ,  H02P2205/01 ,  Y02T10/643 ,  Y02T10/70 ,  Y02T10/7022 ,  Y02T10/7077 ,  Y02T10/7241 ,  Y02T10/7275

摘要： A control device for a three-phase alternate current motor includes: a control phase current acquisition means; a monitor phase current acquisition means; a rotation angle acquisition means; a two-phase control current value calculation means; a one-phase current estimated value estimation means; a voltage command value calculation means; an other phase current estimation means for calculating a monitor or a control phase current estimated value; an abnormality detection means for detecting an abnormality in a monitor phase or a control phase current sensor; a number-of-revolutions calculation means for the motor; a number-of-revolutions determination means for determining whether the number of revolutions is not larger than a predetermined determination value; and a switching means between a two-phase control mode when the number of revolutions is not larger than the determination value and a one-phase control mode when the number of revolutions is larger than the determination value.

摘要翻译： 一种用于三相交流电动机的控制装置包括：控制相电流获取装置; 监视相电流获取装置; 旋转角度获取装置; 两相控制电流值计算装置; 一相电流估计值估计装置; 电压指令值计算装置; 用于计算监视器或控制相位电流估计值的另一相电流估计装置; 用于检测监视阶段的异常或控制相电流传感器的异常检测装置; 用于电动机的转数计算装置; 用于确定所述转数是否不大于预定确定值的转数确定装置; 以及当所述转数不大于所述确定值时的两相控制模式之间的转换装置和当所述转数大于所述确定值时的单相控制模式。

公开(公告)号：US20110219816A1

公开(公告)日：2011-09-15

申请号：US13128347

申请日：2009-12-01

申请人： Hidehisa Tanaka ,  Yoshinori Takeoka

发明人： Hidehisa Tanaka ,  Yoshinori Takeoka

IPC分类号： F25B1/00 ,  H02P6/14

CPC分类号： H02P27/06 ,  H02P6/15 ,  H02P6/18 ,  H02P6/181 ,  H02P23/0027 ,  H02P23/009 ,  H02P2201/03 ,  H02P2205/01

摘要： Phase correction unit (25) for outputting a commutation signal for switching a winding that allows a current to flow to brushless DC motor (4) and drive unit (16) for outputting a drive signal indicating supplying timing of electric power supplied to brushless DC motor (4) by inverter (3) based on the commutation signal output from phase correction unit (25) are provided so as to maintain a predetermined relation between a phase of a current flowing to a predetermined winding of brushless DC motor (4) and a phase of a voltage. Since brushless DC motor (4) is driven by a signal for holding the predetermined relation between the phase of the current and the phase of the voltage, the stability of drive under high-speed and high-load conditions is enhanced and a drive range is extended.

摘要翻译： 相位校正单元（25），用于输出用于切换允许电流流向无刷直流电动机（4）的绕组的换向信号;以及驱动单元（16），用于输出指示供给无刷直流电动机的电力供给时序的驱动信号 提供基于从相位校正单元（25）输出的换向信号的逆变器（3），以保持流向无刷直流电动机（4）的预定绕组的电流的相位与 电压相位。 由于无刷直流电动机（4）由用于保持电流相位与电压相位之间的预定关系的信号驱动，所以在高速和高负载条件下驱动的稳定性提高，驱动范围为 延长

公开(公告)号：US07960927B2

公开(公告)日：2011-06-14

申请号：US12318497

申请日：2008-12-30

申请人： Zhiqian Chen

发明人： Zhiqian Chen

IPC分类号： H02P7/00

CPC分类号： H02P21/06 ,  H02P21/0089 ,  H02P21/22 ,  H02P27/08 ,  H02P2201/07 ,  H02P2205/01

摘要： An electric motor control device includes a power supply unit that supplies power to a three-phase electric motor; a three-phase current sensor that individually detects three respective phase currents of the three-phase electric motor; a summing unit that calculates a three-phase sum by adding the three phase currents detected by the three-phase current sensor; a detected current correction unit that calculates correction amounts for at least two of the three phase currents based on a phase and an amplitude of the three-phase sum and then corrects phase current detection values by the calculated correction amounts; and a motor control unit that controls a power supply by the power supply unit to the three-phase electric motor by feedback control based on the three phase currents after correction by the detected current correction unit and on target currents.

摘要翻译： 电动机控制装置包括向三相电动机供电的供电单元; 分别检测三相电动机的三相电流的三相电流传感器; 求和单元，其通过将由三相电流传感器检测出的三相电流相加来计算三相和; 检测电流校正单元，其基于三相和的相位和幅度来计算三相电流中的至少两个的校正量，然后通过计算出的校正量来校正相电流检测值; 以及电动机控制单元，其通过基于由所检测的电流校正单元校正后的三相电流和目标电流的反馈控制来控制由电源单元向三相电动机供电的电力。

公开(公告)号：US07483279B2

公开(公告)日：2009-01-27

申请号：US11550087

申请日：2006-10-17

申请人： Kyung Joo Lee

发明人： Kyung Joo Lee

IPC分类号： H02M1/12 ,  H02M3/24

CPC分类号： H02P23/0004 ,  H02P2205/01 ,  H02P2207/01

摘要： The present invention previously sets a threshold voltage, compares the set threshold voltage with a reference voltage, and judges whether a minimal pulse width of a PWM signal is obtained. When a pulse width of one PWM signal is equal to or greater than the minimal pulse width, but each pulse width of two PWM signals is less than the minimal pulse width, a sine wave voltage corresponding to one of the two PWM signals less than the minimal pulse width is varied to a threshold voltage to detect two phase currents, and a remaining one phase current is calculated based on the two detected phase currents. After the phase current was detected by varying the threshold voltage, a level difference between an original sine wave voltage and the threshold voltage is set as a compensation voltage, and the sine wave voltage is compensated by the compensation voltage.

摘要翻译： 本发明预先设定阈值电压，将设定的阈值电压与基准电压进行比较，判断是否获得PWM信号的最小脉冲宽度。 当一个PWM信号的脉冲宽度等于或大于最小脉冲宽度，但是两个PWM信号的每个脉冲宽度小于最小脉冲宽度时，对应于两个PWM信号之一的正弦波电压小于 最小脉冲宽度变化到阈值电压以检测两相电流，并且基于两个检测到的相电流来计算剩余的一相电流。 在通过改变阈值电压检测到相电流之后，将原始正弦波电压和阈值电压之间的电平差设置为补偿电压，并且通过补偿电压补偿正弦波电压。

公开(公告)号：US07463006B2

公开(公告)日：2008-12-09

申请号：US11860873

申请日：2007-09-25

申请人： CaoMinh Ta ,  Shuji Endo

发明人： CaoMinh Ta ,  Shuji Endo

IPC分类号： H02P27/00

CPC分类号： H02P21/0089 ,  B62D5/046 ,  H02P21/00 ,  H02P21/06 ,  H02P25/03 ,  H02P27/08 ,  H02P2205/01 ,  H02P2207/05

摘要： The invention provides a drive control device for the motor as well as an electric power steering apparatus using the motor and the drive control device. Respective phase current command values are calculated on the basis of vector control. Pseudo-vector control for controlling respective phases separately is used as current feedback control.

摘要翻译： 本发明提供了一种用于电动机的驱动控制装置以及使用电动机和驱动控制装置的电动助力转向装置。 基于矢量控制计算相电流指令值。 用于分别控制各个相的伪矢量控制被用作电流反馈控制。