公开(公告)号：US20140139174A1

公开(公告)日：2014-05-22

申请号：US14079311

申请日：2013-11-13

Applicant: OPTIMIZED SYSTEMS AND SOLUTIONS LIMITED

Inventor： Dongfeng SHI

IPC: H02P23/14

CPC classification number: H02P23/14 ,  G01R19/2513

Abstract: A method for estimating a frequency of a harmonic in an AC current passing to/from an AC machine. The method includes observing an AC current passing to/from an AC machine that includes a stator and a rotor; measuring phase fluctuations in the observed AC current; and using the measured phase fluctuations to estimate a frequency of a harmonic in the AC current. The method includes using the estimated frequency of the harmonic in the observed AC current to estimate a speed of the rotor of the AC machine. The method may be implemented by a controller, which may include a PC and/or a DSP.

Abstract translation: 一种用于估计通过/从交流电机的交流电流中的谐波频率的方法。 该方法包括观察通过/来自包括定子和转子的AC电机的AC电流; 测量观测到的交流电流的相位波动; 并使用测量的相位波动来估计AC电流中的谐波频率。 该方法包括使用所观察的AC电流中的谐波的估计频率来估计AC电机的转子的速度。 该方法可以由可以包括PC和/或DSP的控制器来实现。