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    • 32. 发明授权
    • Driving system of permanent magnet synchronous motor
    • 永磁同步电机驱动系统
    • US08541971B2
    • 2013-09-24
    • US12805840
    • 2010-08-20
    • Toshifumi SakaiYoshitaka IwajiKiyoshi SakamotoYoshiyuki TaguchiDaigo Kaneko
    • Toshifumi SakaiYoshitaka IwajiKiyoshi SakamotoYoshiyuki TaguchiDaigo Kaneko
    • G05B11/28
    • H02P9/30H02M7/53873H02P6/18H02P9/009H02P21/18
    • When applying a high frequency voltage which alternates on positive and negative sides to a permanent magnet synchronous motor, a driving system of synchronous motor switches the applied voltage phase by 120 degrees successively and applies resultant voltages to three phases. A pulsating current generated by applying a high frequency voltage is detected at timing of elapse of a predetermined time Δt since an output voltage of at least one phase has changed from a state in which all output voltages of the three phases of a power converter are positive or negative. Current detection is conducted by using a DC resistor or a phase current sensor provided on a DC bus. A magnetic pole estimation unit calculates the rotor magnetic pole position of the permanent magnet synchronous motor on the basis of differences between positive side and negative side change quantities in three-phase currents obtained from detected current values.
    • 当施加在正极和负极侧交替永磁同步电动机的高频电压时,同步电动机的驱动系统连续地将施加的电压相位切换120度,并将合成电压施加到三相。 在经过预定时间Deltat的定时检测由施加高频电压产生的脉动电流,因为至少一相的输出电压已经从功率转换器的三相的所有输出电压都为正的状态改变 或负数。 通过使用直流母线上提供的直流电阻或相电流传感器进行电流检测。 磁极估计单元根据从检测到的电流值得到的三相电流的正侧和负侧的变化量之差,来计算永磁同步电动机的转子磁极位置。
    • 33. 发明申请
    • Motor Control Apparatus and Motor System
    • 电机控制装置及电机系统
    • US20090108784A1
    • 2009-04-30
    • US12255693
    • 2008-10-22
    • Kiyoshi SakamotoTomohiro Sugino
    • Kiyoshi SakamotoTomohiro Sugino
    • H02P6/18
    • H02P6/182H02P6/187H02P6/188
    • In a motor control apparatus, apparatus all switching devices of all phases of an inverter are kept fixed at OFF in accordance with a value of an all-OFF control pulse signal Poff outputted by a pulse generator. The pulse generator generates at least twice a pulse causing an induced voltage detection signal Pdet to change to an H level. A terminal voltage of a motor is inputted in accordance with the value of the induced voltage detection signal Pdet. Data of the sampling round in which amplitude of the induced voltage signal is great and the signal is not in saturation is selected from the data so inputted and a rotor position is estimated.
    • 在电动机控制装置中,根据脉冲发生器输出的全关闭控制脉冲信号Poff的值,逆变器的所有相的所有开关装置的装置保持固定为OFF。 脉冲发生器产生脉冲的至少两倍,使感应电压检测信号Pdet变为H电平。 根据感应电压检测信号Pdet的值输入电动机的端子电压。 从输入的数据中选择感应电压信号的幅度大,信号不饱和的采样周期的数据,并且估计转子位置。
    • 40. 发明授权
    • Synchronous motor driving system
    • 同步电机驱动系统
    • US06650081B2
    • 2003-11-18
    • US10099590
    • 2002-03-13
    • Yoshitaka IwajiTsunehiro EndoKiyoshi SakamotoYuhachi Takakura
    • Yoshitaka IwajiTsunehiro EndoKiyoshi SakamotoYuhachi Takakura
    • H02P146
    • H02P21/24H02P6/21H02P6/34
    • Axial error calculation unit is provided for estimating an axial error &Dgr;&thgr; between a d-q axis and a dc-qc axis by using Ld, Lq, Ke, Id*, Iq*, Idc and Iqc in a range of all rotational speeds except zero of a rotational speed command of a synchronous motor, Ld denoting an inductance on a magnetic pole axis d of the synchronous motor, Lq an inductance on a q axis orthogonal to the magnetic pole axis d, Ke a generated power constant of the motor, Id* a current command of the d axis, Iq* a current command on a q axis, Idc a detected current value on an assumed dc axis on control, and Iqc a detected current value on an assumed qc axis orthogonal to the assumed dc axis. Irrespective of presence of saliency, position sensorless control can be achieved in a wide range a low to high speed zone.
    • 提供轴向误差计算单元,用于通过使用除了零的零以外的所有转速的范围内的Ld,Lq,Ke,Id *,Iq *,Idc和Iqc来估计dq轴和dc-qc轴之间的轴向误差Deltatheta 同步电动机的转速指令Ld表示同步电动机的磁极轴d上的电感,Lq是与磁极轴d正交的aq轴上的电感,Ke是电动机的发电功率常数,Id *电流 d轴的命令,Iq * aq轴上的电流指令,Idc是控制上假设的直流轴上的检测到的电流值,Iqc是与假定的直流轴正交的假设qc轴上的检测电流值。 无论存在显着性,可以在低速到高速区域的广泛范围内实现无位置传感器控制。