公开(公告)号：EP2555420A1

公开(公告)日：2013-02-06

申请号：EP11176085.6

申请日：2011-08-01

Applicant: ABB Technology AG

Inventor： Peretti, Luca ,  Svechkarenko, Dmitry

IPC: H02P21/14

CPC classification number: H02P21/16 ,  H02P21/14 ,  H02P21/141 ,  H02P21/24 ,  H02P2203/11

Abstract: The present invention relates to a method of estimating inductances and flux linkages of an electrical machine, which electrical machine is supplied with drive currents via current regulators and actual values of the drive currents are measured and fed back to the current regulators such that closed-loop control is provided. The method comprises the steps of providing one of the current regulators with an alternating current (AC) value either for a direct axis current reference i* d or for a quadrature axis current reference i* q of the machine current vector, while providing another one of the current regulators with a predetermined direct current (DC) value for the remaining one of the two current references i* d and i* q . Subsequently, after a predetermined time period has expired, a varying signal is superimposed onto an output signal generated by the current regulator in response to the AC value. Finally, a contribution signal, which corresponds to the contribution of the superimposed varying signal to the drive currents, is determined, and the machine inductances and flux linkages are estimated on the basis of the contribution signal.

Abstract translation: 本发明涉及一种估计电机的电感和磁链的方法，该电机通过电流调节器提供驱动电流并测量驱动电流的实际值并反馈给电流调节器，使得闭环 提供控制。 该方法包括以下步骤：为直流轴电流参考i * d或机器电流矢量的正交轴电流参考i * q提供电流调节器之一的交流（AC）值，同时提供另一个 的电流调节器具有对于两个电流基准i * d和i * q中的其余一个的预定直流（DC）值。 随后，在预定时间段到期之后，响应于AC值，将变化的信号叠加到由电流调节器产生的输出信号上。 最后，确定对应于叠加的变化信号对驱动电流的贡献的贡献信号，并且基于贡献信号来估计机器电感和磁通量。