Rotor position estimation for switched reluctance machines
    51.
    发明授权
    Rotor position estimation for switched reluctance machines 失效
    开关磁阻电机的转子位置估计

    公开(公告)号:US06456031B1

    公开(公告)日:2002-09-24

    申请号:US09765745

    申请日:2001-01-19

    IPC分类号: H02F800

    CPC分类号: H02P25/089

    摘要: Method and system for estimating rotor position of a switched reluctance machine is provided. The method allows for estimating flux linkage across a respective phase of the machine. The method allows for measuring of magnetization curves at aligned and unaligned positions of the machine. The method further allows for computing magnetization reference data between the aligned and unaligned positions. A storing step allows for storing rotor position data based on the magnetization reference data. The stored rotor position data is indicative of rotor position variation as a function of phase current. A relating step allows to relate the estimated flux linkage to the magnetization reference data to determine, for a respective phase current, correspondence of the estimated flux linkage relative to the magnetization reference data. A retrieving step allows for retrieving stored rotor position data when said correspondence is determined. The retrieved rotor position data is the estimate of rotor position of the switch reluctance machine corresponding to the respective phase current.

    摘要翻译: 提供了一种用于估计开关磁阻电机的转子位置的方法和系统。 该方法允许估计通过机器的各个相位的磁链。 该方法允许测量机器对准和未对准位置的磁化曲线。 该方法还允许在对准和未对准位置之间计算磁化参考数据。 存储步骤允许基于磁化参考数据存储转子位置数据。 存储的转子位置数据表示作为相电流的函数的转子位置变化。 相关步骤允许将估计的磁通链接与磁化参考数据相关联,以针对相应的相电流确定估计的磁链相对于磁化参考数据的对应关系。 当确定所述对应关系时,检索步骤允许检索存储的转子位置数据。 检索的转子位置数据是对应于相应电流的开关磁阻电机的转子位置的估计。

    Method for searching a lookup table
    53.
    发明授权
    Method for searching a lookup table 有权
    搜索查询表的方法

    公开(公告)号:US08990277B2

    公开(公告)日:2015-03-24

    申请号:US13466746

    申请日:2012-05-08

    IPC分类号: G06F1/02 G06F17/30 G06K9/48

    CPC分类号: G06F17/30952 G06K9/48

    摘要: Methods and apparatus are provided in which a computed vector index (CVI) can be generated/computed based on an input value being searched for within an index vector of a lookup table. When the CVI is greater than a length of an index vector, the CVI can be re-computed to generate a re-computed vector index (RVI). When the value of the CVI is determined to be correct, or when the RVI is generated, an interpolation routine for a linearly indexed index vector can be executed using a presently computed vector index (e.g., either the CVI or the RVI) to determine an interpolated output value that corresponds to the input value. By contrast, when the value of the CVI is determined to be incorrect, an interpolation routine for a piecewise indexed index vector can be executed to determine the interpolated output value.

    摘要翻译: 提供了方法和装置,其中可以基于在查找表的索引向量内搜索的输入值来生成/计算计算出的向量索引(CVI)。 当CVI大于索引向量的长度时,可以重新计算CVI以产生重新计算的向量索引(RVI)。 当CVI的值被确定为正确时,或当生成RVI时,可以使用当前计算的矢量索引(例如,CVI或RVI)来执行用于线性索引的索引向量的内插程序,以确定 内插输出值对应于输入值。 相反,当CVI的值被确定为不正确时,可以执行用于分段索引的索引向量的内插程序以确定内插的输出值。

    Methods, systems and apparatus for controlling operation of an electric machine in an overmodulation region
    54.
    发明授权
    Methods, systems and apparatus for controlling operation of an electric machine in an overmodulation region 有权
    用于控制过调制区域中的电机的操作的方法,系统和装置

    公开(公告)号:US08829827B2

    公开(公告)日:2014-09-09

    申请号:US13339256

    申请日:2011-12-28

    IPC分类号: H02P21/00 H02P27/08

    CPC分类号: H02P27/085 H02P21/0089

    摘要: Embodiments of the present disclosure relate to methods, systems and apparatus for controlling operation of an electric machine in a vector controlled motor drive system when the electric machine operates in an overmodulation region. The disclosed embodiments can reduce variations/errors in the phase voltage command signals applied to the multi-phase machine so that phase current may be properly regulated thus reducing current/torque oscillation, which can in turn improve machine efficiency and performance, as well as utilization of the DC voltage source.

    摘要翻译: 本公开的实施例涉及当电机在过调制区域中操作时用于控制矢量控制的电动机驱动系统中的电机的操作的方法,系统和装置。 所公开的实施例可以减少施加到多相机的相电压指令信号中的变化/误差,使得可以适当地调节相电流,从而减少电流/转矩振荡,这又可以提高机器效率和性能,以及利用 的直流电压源。

    METHOD FOR SEARCHING A LOOKUP TABLE
    56.
    发明申请
    METHOD FOR SEARCHING A LOOKUP TABLE 有权
    搜索查询表的方法

    公开(公告)号:US20130304782A1

    公开(公告)日:2013-11-14

    申请号:US13466746

    申请日:2012-05-08

    IPC分类号: G06F17/10

    CPC分类号: G06F17/30952 G06K9/48

    摘要: Methods and apparatus are provided in which a computed vector index (CVI) can be generated/computed based on an input value being searched for within an index vector of a lookup table. When the CVI is greater than a length of an index vector, the CVI can be re-computed to generate a re-computed vector index (RVI). When the value of the CVI is determined to be correct, or when the RVI is generated, an interpolation routine for a linearly indexed index vector can be executed using a presently computed vector index (e.g., either the CVI or the RVI) to determine an interpolated output value that corresponds to the input value. By contrast, when the value of the CVI is determined to be incorrect, an interpolation routine for a piecewise indexed index vector can be executed to determine the interpolated output value.

    摘要翻译: 提供了方法和装置,其中可以基于在查找表的索引向量内搜索的输入值来生成/计算计算出的向量索引(CVI)。 当CVI大于索引向量的长度时,可以重新计算CVI以产生重新计算的向量索引(RVI)。 当CVI的值被确定为正确时,或当生成RVI时,可以使用当前计算的矢量索引(例如,CVI或RVI)来执行用于线性索引的索引向量的内插程序,以确定 内插输出值对应于输入值。 相反,当CVI的值被确定为不正确时,可以执行用于分段索引的索引向量的内插程序以确定内插的输出值。

    POWER INVERTER MODULE THERMAL MANAGEMENT
    60.
    发明申请
    POWER INVERTER MODULE THERMAL MANAGEMENT 有权
    电力逆变器模块热管理

    公开(公告)号:US20090072770A1

    公开(公告)日:2009-03-19

    申请号:US11853862

    申请日:2007-09-12

    摘要: According to an example embodiment, a method is provided for limiting an operational temperature of a motor. The method includes generating a maximum allowable current I*S(max) for a motor based on a temperature difference between a temperature reference T* of a power inverter module and a semiconductor device temperature T of the power inverter module. The method further includes generating a maximum allowable torque T*e(max) based on the maximum allowable current I*S(max) and a maximum allowable flux Ψ*S(max), and using the maximum allowable torque T*e(max) to limit the torque command T*e in order to suppress the semiconductor device temperature T to below the temperature reference T*.

    摘要翻译: 根据示例性实施例,提供了一种用于限制电动机的工作温度的方法。 该方法包括基于电力逆变器模块的温度参考值T *和功率逆变器模块的半导体器件温度T之间的温差产生电动机的最大允许电流I * S(max)。 该方法还包括基于最大允许电流I * S(max)和最大允许通量Psi * S(max)产生最大允许转矩T * e(max),并使用最大允许转矩T * e )以限制转矩指令T * e,以便将半导体器件温度T抑制到低于温度参考值T *。