Department of Electrical and Electronic Engineering, Yantai Vocational College, Yantai 262670, China
Received: August 18, 2022 Accepted: November 3, 2022 Publication Date: March 9, 2023
Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.
In order to accurately compensate the harmonics and reactive power of the active power filter, a parallel type active filter detection algorithm based on adaptive inverse control is proposed to control and follow the DC capacitor voltage, obtain the command signal needed by the active filter, and accomplish the purpose of harmonic control and reactive power compensation. The simulation results show that the grid current after compensation is similar to the standard sinusoidal wave shape, indicating that the algorithm has better compensation performance and following performance; after compensation, the total current distortion rate is reduced by 3%; when the harmonic component of the supply voltage is high, the harmonic current of the supply current is controlled within the specified range, indicating that the active filter can effectively compensate for harmonics, verifying the adaptive inverse control for the active filter The effectiveness of the adaptive inverse control on the active filter is verified. Comparing the low-pass filter with the adaptive inverse control algorithm, the fundamental current obtained by the latter reaches the steady state 0.015s faster than the former, indicating that the response speed is faster than that of the normal low filter using the adaptive inverse control algorithm. It shows that the shunt-type active filter based on adaptive inverse control has the characteristics of fast dynamic response and good follow-through.
Keywords: Adaptive; Inverse control; Active filter
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