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    • 2. 发明授权
    • Methods, systems and apparatus for controlling third harmonic voltage when operating a multi-phase machine in an overmodulation region
    • 用于在过调制区域中操作多相机时控制三次谐波电压的方法,系统和装置
    • US08742712B2
    • 2014-06-03
    • US13014607
    • 2011-01-26
    • Milun PerisicMichael H KinoshitaRay M. RansomGabriel Gallegos-Lopez
    • Milun PerisicMichael H KinoshitaRay M. RansomGabriel Gallegos-Lopez
    • G05B11/28
    • H02P27/12H02M1/12H02M2007/53876H02P25/22
    • Methods, system and apparatus are provided for controlling third harmonic voltages when operating a multi-phase machine in an overmodulation region. The multi-phase machine can be, for example, a five-phase machine in a vector controlled motor drive system that includes a five-phase PWM controlled inverter module that drives the five-phase machine. Techniques for overmodulating a reference voltage vector are provided. For example, when the reference voltage vector is determined to be within the overmodulation region, an angle of the reference voltage vector can be modified to generate a reference voltage overmodulation control angle, and a magnitude of the reference voltage vector can be modified, based on the reference voltage overmodulation control angle, to generate a modified magnitude of the reference voltage vector. By modifying the reference voltage vector, voltage command signals that control a five-phase inverter module can be optimized to increase output voltages generated by the five-phase inverter module.
    • 提供了在过调制区域中操作多相机时控制三次谐波电压的方法,系统和装置。 多相机可以是例如矢量控制电机驱动系统中的五相机,其包括驱动五相机的五相PWM控制逆变器模块。 提供了用于过调制参考电压矢量的技术。 例如,当参考电压矢量被确定在过调制区域内时,可以修改参考电压矢量的角度以产生参考电压过调制控制角,并且可以基于 参考电压过调制控制角,以产生参考电压矢量的修改幅度。 通过修改参考电压矢量,可以优化控制五相逆变器模块的电压指令信号,以增加由五相逆变器模块产生的输出电压。
    • 4. 发明授权
    • Methods, systems and apparatus for generating current commands used to control operation of an electric machine
    • 用于产生用于控制电机操作的电流指令的方法,系统和装置
    • US08729847B2
    • 2014-05-20
    • US13344236
    • 2012-01-05
    • Gabriel Gallegos-LopezMichael H. KinoshitaMilun Perisic
    • Gabriel Gallegos-LopezMichael H. KinoshitaMilun Perisic
    • H02P6/00H02P21/00
    • H02P21/00H02P21/22
    • Embodiments of the present disclosure relate to methods, systems and apparatus for mapping torque to current to generate current commands used to control operation of an electric machine. Based on a DC input voltage, lookup tables (LUTs) are selected. Each of the selected LUTs includes a plurality (B) of first entries that correspond a particular input value of an angular rotation speed of the electric machine, and a set of coefficients are output from each of the selected LUTs that can be applied within a first polynomial function to generate a plurality of first polynomial functions each having a different sets of coefficients. A plurality of particular output values for a first current command are generated via the plurality of first polynomial functions. The particular output values for the first current command can be interpolated to generate a final output value for the first current command.
    • 本公开的实施例涉及用于将扭矩映射到电流以产生用于控制电机操作的电流命令的方法,系统和装置。 基于直流输入电压,选择查找表(LUT)。 每个所选择的LUT包括对应于电机的角度旋转速度的特定输入值的第一条目的多个(B),并且一组系数从可以应用于第一 多项式函数,用于生成多个具有不同系数集合的第一多项式函数。 经由多个第一多项式函数产生用于第一电流命令的多个特定输出值。 可以内插第一个当前命令的特定输出值,以生成第一个当前命令的最终输出值。