Study on Harmonic Current Detection Algorithm for Shunt Active Filter Control

2019 ◽  
Author(s):  
Abdelfettah Boussaid ◽  
Mohamed Amine Moussa ◽  
Ahmed Lokmane Nemmour ◽  
Abdelmalek Khezzar
Keyword(s):  
Detection Algorithm ◽  
Active Filter ◽  
Harmonic Current ◽  
Shunt Active Filter ◽  
Current Detection

Research on Improved Power Harmonic Current Detection Methods

2012 ◽  
Vol 241-244 ◽  
pp. 1889-1895
Author(s):  
Jin Yu Wang ◽  
Zhi Hui Shen ◽  
Yu Long Zhou ◽  
Pei Jiang Zhang
Keyword(s):  
Coordinate Transformation ◽  
Reactive Power ◽  
Detection Algorithm ◽  
Detection Methods ◽  
Matlab Simulation ◽  
Harmonic Current ◽  
Two Phase ◽  
Three Phase ◽  
Filtering Effect ◽  
Current Detection

Although Active Power Filter can achieve good filtering effect and accurately compensate harmonic current, it dependents on the proposed current detection algorithm. The paper first discusses the method which is based on transient reactive power theory; the detection method is based on coordinate transformation. After the coordinate transformation is analyzed, the paper advances an harmonic method, this method can remove three-phase to two-phase and two-phase to three-phase coordinate transformation, and effectively reduce the computation, improve the detection speed. At last, the feasibility and validity of the new algorithm have been showed by MATLAB simulation

An Improved Harmonic Current Detection Method Based on Variable Forgetting Factor RLS Algorithm

2013 ◽  
Vol 291-294 ◽  
pp. 2459-2463
Author(s):  
Minh Guang Vu ◽  
Wei Han ◽  
Da Zhi Wang ◽  
Yun Lu Li
Keyword(s):  
Dynamic Process ◽  
Detection Algorithm ◽  
Recursive Least Squares ◽  
Forgetting Factor ◽  
Harmonic Current ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Variable Forgetting Factor ◽  
The Impact ◽  
Current Detection

The effects of compensating and restraining the power system harmonics using active power filter are determined by the detection precision and its dynamic response characters. To improve both of them, a harmonic current detection algorithm based on variable forgetting factor Recursive Least-Squares algorithm is presented. The occurrence of the dynamic process is identified firstly by the judgment condition which is given by the algorithm, and then the forgetting factor is assigned dynamically, so that the convergent speed is significantly improved. The algorithm overcomes the impact of low-pass filter of traditional p-q or ip-iq algorithm, and releases the contradiction cased by the conflicting requirements of forgetting factor value between steady process and dynamic process. So it has better dynamic performance. Simulation and experiments prove the validity and feasibility of the approaches.

Simulation and Comparison of Adaptive Detection Algorithm

2011 ◽  
Vol 130-134 ◽  
pp. 2692-2695 ◽  
Author(s):  
Yun Liang Wang ◽  
Guo Cun Li
Keyword(s):  
Adaptive Algorithm ◽  
Detection Algorithm ◽  
Lms Algorithm ◽  
Detection Methods ◽  
Least Mean Square ◽  
Harmonic Detection ◽  
Harmonic Current ◽  
Power Filter ◽  
Simulation Based ◽  
Current Detection

The active power filter has two key link for harmonic current detection and respectively compensation current tracking. This article mainly aims at harmonic current detection link. Firstly, Analysis adaptive harmonic detection methods, then based on over to LMS (Least Mean Square) adaptive algorithm as the research object, in discussing the adaptive algorithm criteria. By comparing several simulation-based LMS algorithm to achieve the results of the filter,analyse the causes of the results.

A Blend Control Scheme of Active Power Filter Based on Harmonic Voltage

2011 ◽  
Vol 268-270 ◽  
pp. 434-439
Author(s):  
Chen Guo ◽  
Cun Bing Gui ◽  
Jian Huang
Keyword(s):  
Distribution System ◽  
Active Filter ◽  
Laboratory System ◽  
Nonlinear Load ◽  
Shunt Active Filter ◽  
Power Filter ◽  
Control Scheme ◽  
Harmonic Voltage ◽  
The Relationship ◽  
Current Detection

This paper proposes a blend control scheme of APF based on harmonic voltage to solve the problem that load current detection APF cannot change the harmonic impedance in distribution system. In addition, based on the relationship between the rated volt-ampere of APF and the load volt-ampere, the conductance value could automatic adjustment. Computer simulation and laboratory system are designed and constructed to verify the validity and effectiveness of the shunt active filter equipped with the blend control. The shunt active filter with blend control not only can compensate the nonlinear load harmonic current but also can help to damp the harmonic voltage in distribution system.

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