Short pulse voltage detection method

    Voltage glitch detection method implemented is based on the saturation characteristics of the iron core of the stator, the stator core saturation principle characteristics are: when a given specific stator windings are energized, since the stator core is magnetized when rendered non-saturation characteristic, the stator with the degree of saturation of the core in different positions of the permanent magnet rotor is changed, so that the equivalent inductance of the stator core is different. Is equal to the magnitude of the applied voltage vector to the different directions of the stator at the same time, the synthesis of the stator current vector values ​​produced are different. When applied to the same direction with the rotor voltage vector N, the magnetic circuit is most saturated. At this time, the minimum inductance value corresponding to the current fastest increase, the maximum current in the stator windings.