Harmonic currents elimination in electric vehicle charging systems with shunt active power filters using PI controller
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Abstract
This article presents the harmonic elimination in an electric vehicle charging system using a shunt active power filter (SAPF). The PI controller is applied for the compensating current injection and the DC bus voltage controls of SAPF. The design of four significant parts for effective harmonic elimination performance is discussed. The first part is
the design of the structure and parameters of SAPF suitable for the electric vehicle charging system. The harmonic detection using instantaneous power theory combined with sliding window Fourier analysis (PQF) is the second part. The third part is the PI controller design of the compensating current control, and the DC bus voltage control is the final part. The performance of harmonic elimination is tested using the MATLAB/Simulink program. The total harmonic distortion ( % i THD ) and the power factor ( pf ) after the compensating current injection are used for the evaluation criteria of the harmonic elimination performance. These performance indexes refer to the IEEE Standard 519-2022 standard. The simulation results confirm that the proposed SAPF performs well in eliminating harmonics in the electric vehicle charging system. After compensation, the % i THD is found to be 4.03% , and the pf is 1. These performance indexes are within the specified limits of IEEE Standard 519-2022.
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References
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