An Improved Deadbeat Control for a Three-Phase Three-Line Active Power Filter With Current-Tracking Error Compensation

作者：Jiang, Weidong; Ding, Xingxing; Ni, Youyuan; Wang, Jinping^*; Wang, Lei; Ma, Weicheng

来源：IEEE Transactions on Power Electronics, 2018, 33(3): 2061-2072.

DOI：10.1109/TPEL.2017.2693325

• Active power filter (APF)
• current-tracking error
• deadbeat control (DBC)
• robustness
• sampling error

An active power filter (APF) plays an important role in compensating the harmonic component of a nonlinear load current. In this paper, deadbeat control (DBC), which has high control performance and fast dynamic response, is used as a current controller for an APF. An improved DBC (Imp_DBC) is introduced to suppress the adverse effect of the current sampling error and to enhance the interference rejection capability of the control system. The characteristics of the conventional DBC and Imp_DBC are analyzed using transfer functions in the discrete-time domain. The robustness of the system is improved with the inductance variation. Specifically, aiming at the dramatic change of the harmonic component of the nonlinear load current, a current-tracking error compensation method is proposed. The phenomena of the upper convex and lower concave in grid current are eliminated. Finally, the experimental setup of three-phase three-line APF is built, and the effectiveness of this method is verified by experiments.

• 出版日期2018-3
• 单位合肥工业大学