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随着电力电子装置的日益普及和大量应用,电力电子装置产生的谐波已成为电网的主要谐波污染源,其无功问题也很严重。因此,如何消除谐波污染并提高功率因数,已成为现代电力系统中的一个重大课题。有源电力滤波器(APF)、静止无功发生器(SVG)等作为新一代谐波抑制与无功补偿装置,其控制系统是相当复杂的,通常可划分为信号检测、稳定控制和底层驱动控制三大部分。本文结合现有的各种控制及检测方法,对这3部分进行了较为全面的研究,并在此基础上对其发展趋势进行了探讨。
With the popularization and mass application of power electronic devices, the harmonics generated by power electronic devices have become the main source of harmonic pollution in power grids, and the reactive power problems are also serious. Therefore, how to eliminate harmonic pollution and increase power factor has become a major issue in modern power system. Active Power Filter (APF), Static Reactive Power Generator (SVG), etc. As a new generation of harmonic suppression and reactive power compensation device, the control system is quite complex, usually divided into signal detection, stability control and the underlying driver Control three major parts. In this paper, a combination of existing control and detection methods, the three parts of a more comprehensive study, and on the basis of its development trend are discussed.