The Design Of Active Power Filter Based On The Algorithm Of LCC Harmonic Detection

The paper mainly studies on the distorted current detection algorithm based on the Least Compensation Current.The paper gives detailed deduction to the principle of the algorithm to realize deep simulation study and finally apply it to the three-phase supply system.The paper first gives a general introduction to the existing harmonic current detection algorithms, and points out their limitations concerning the real-time property and detection precision etc. Based on the loaded current analysis, the algorithm of the present paper is proposed. The accuracy and feasibility of the algorithm herein is proved through theoretical analysis and strict mathematic deduction and simulation studies performed on the algorithm.Based on the study of harmonic detection algorithm and the simulation study to the active power filter system with SIMPLORER6.0 software, the hardware and software design are conducted on the active power filter system to develop a parallel active power filter sample. Experiments show that the harmonic current detection algorithm based on LCC has high detection precision and real-time property, and also show that the active power filter system design has fine compensation effects.