公开(公告)号：US20130346004A1

公开(公告)日：2013-12-26

申请号：US14010035

申请日：2013-08-26

Applicant: ABB AG

Inventor： Adrian HOZOI ,  Rolf DISSELNKÕTTER

IPC: H03L7/087

CPC classification number: H01C13/02 ,  G01R15/04 ,  H01C7/00 ,  H01C17/23 ,  H02M3/06 ,  H02M5/06 ,  H03L7/087

Abstract: A phase-locked loop is provided for estimating a phase angle of a three-phase reference signal. The phase-locked loop includes a device for calculating an estimated first state and an estimated second state at a fundamental frequency on the basis of the reference signal and the estimated fundamental frequency, a device for calculating a fundamental positive sequence component of the reference signal on the basis of the first state and the second state, a device for calculating a direct component and a quadrature component in a reference frame synchronous with the phase angle on the basis of the fundamental positive sequence component and an estimated phase angle, and a device for determining estimates of the estimated fundamental frequency and the estimated phase angle on the basis of the quadrature component.

Abstract translation: 提供锁相环来估计三相参考信号的相位角。 锁相环包括用于基于参考信号和估计的基频来计算基本频率的估计第一状态和估计第二状态的装置，用于计算参考信号的基本正序分量的装置， 第一状态和第二状态的基础，用于基于基本正序分量和估计相位角计算与相位角同步的参考帧中的直接分量和正交分量的装置，以及用于 基于正交分量来确定估计基频和估计相位角的估计。