公开(公告)号：US20150057970A1

公开(公告)日：2015-02-26

申请号：US14467471

申请日：2014-08-25

Applicant: ABB Technology AG

Inventor： Simon FEUERSAENGER ,  Mario PACAS ,  Christian STULZ

IPC: G01B7/00 ,  G01B7/30

CPC classification number: G01B7/003 ,  G01B7/30 ,  H02P1/46 ,  H02P6/18 ,  H02P6/185 ,  H02P27/04

Abstract: A method is disclosed for determining a rotor position of an electrically excited electrical machine by injecting voltage test signals at a plurality of space vector angles with a fundamental frequency which lies in a frequency range in which there is a difference in admittance in space vector angles; calculating resulting values of an excitation current indicator variable as Fourier coefficients of the excitation current resulting from the voltage test signal with reference to the fundamental frequency of the voltage test signal at the corresponding space vector angles; and determining the rotor position on the basis of the profile of the excitation current indicator variable.

Abstract translation: 公开了一种用于通过以基本频率在多个空间矢量角度注入电压测试信号来确定电激励电机的转子位置的方法，所述基频位于空间矢量角中的导纳差异的频率范围内; 以相应的空间矢量角度参考电压测试信号的基频计算激励电流指示变量的结果值作为由电压测试信号产生的激励电流的傅里叶系数; 并且基于激励电流指示器变量的轮廓来确定转子位置。