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    • 9. 发明授权
    • Method for manufacturing a claw pole stator structure
    • 爪极定子结构的制造方法
    • US6145187A
    • 2000-11-14
    • US161619
    • 1998-09-28
    • Gerald Burt Kliman
    • Gerald Burt Kliman
    • H02K15/02
    • H02K15/022Y10T29/49009Y10T29/49076
    • A multipole brushless DC motor stator is formed with a pair of complementary opposable claw pole stator structures in which each of the stator structures comprises a stator base formed of a plurality of stacked sheet metal laminations. A plurality of stator pole members extend from the stator base and are formed by compression molding of a ferromagnetic material. In one form, the ferromagnetic material is molded in situ on the stator base by positioning the stator base in a compression mold having the slots in which a powdered or flaked ferromagnetic material can be positioned and compressed by a die. In another form, the ferromagnetic pole members may be independently compression molded of powdered or flaked ferromagnetic material and then adhesively bonded to the stacked laminations forming the stator base. In either method, the stacked laminations are formed with a plurality of receptacles for receiving one end of each of the stator poles and holding the stator poles to the stator base.
    • 多极无刷直流电动机定子形成有一对互补的可对置爪极定子结构,其中每个定子结构包括由多个堆叠的金属板状叠片形成的定子基座。 多个定子极构件从定子基座延伸并且通过铁磁材料的压缩成型而形成。 在一种形式中,通过将定子基座定位在具有槽的压缩模具中,在定子基座上原位模制铁磁材料,其中粉末状或片状的铁磁材料可以由模具定位和压缩。 在另一种形式中,铁磁极构件可以由粉末状或片状的铁磁材料独立地压缩模制,然后粘合到形成定子基底的堆叠的叠片上。 在任一方法中,堆叠的叠片形成有多个接收器,用于接收每个定子极的一端并将定子极保持在定子基座上。
    • 10. 发明授权
    • Sensorless estimation of rotor temperature in induction motors
    • 感应电动机转子温度的无传感器估计
    • US6042265A
    • 2000-03-28
    • US1233
    • 1997-12-30
    • Gerald Burt KlimanJames Henry Dymond
    • Gerald Burt KlimanJames Henry Dymond
    • G01K7/42G01K1/12
    • G01K7/42
    • Rotor temperature in induction motors is estimated without the need for any direct temperature sensors, by using only computer calculations based on data readily available in the motor control center. Thus for any given motor, it is generally possible to predetermine a relationship between rotor temperature and rotor resistance, so that by determining rotor resistance, rotor temperature can be calculated. Rotor resistance, in turn, can be calculated from measured information relating motor slip and motor torque. Any of several methods can be employed for determining torque and slip. Temperature estimation can be obtained by use of equivalent circuit methods, and additional relationships can be obtained from a simplified equivalent circuit.
    • 估计感应电机的转子温度不需要任何直接的温度传感器,只能使用基于马达控制中心现有数据的计算机计算。 因此,对于任何给定的电动机,通常可以预先确定转子温度和转子电阻之间的关系,从而通过确定转子电阻,可以计算转子温度。 转子电阻又可以根据与电机滑差和电机转矩相关的测量信息来计算。 可以采用几种方法中的任何一种来确定扭矩和滑移。 可以通过使用等效电路方法来获得温度估计,并且可以从简化的等效电路获得额外的关系。