Performance analysis of a multilevel inverter based shunt active filter with RT‐EMD control technique under ideal and non‐ideal supply voltage conditions. Issue 18 (2nd September 2019)

• Record Type: Journal Article
• Authors: Dash, Ashish Ranjan; Panda, Anup Kumar; Lenka, Rajesh Kumar; Patel, Ranjeeta
• Is Part Of: IET generation, transmission & distribution. Volume 13:Issue 18(2019)
• Page Start: 4037
• Page End: 4048
• Publication Date: 2019-09-02
• Subjects: active filters -- field programmable gate arrays -- PWM invertors -- electric current control -- power system harmonics -- power harmonic filters -- power convertors -- power grids -- invertors; active filter -- RT‐EMD control technique -- nonideal supply voltage conditions -- real‐time empirical mode decomposition based control technique -- control algorithm -- active component -- load current samples -- positive sequence voltage component -- desired reference -- fundamental component -- employing RT‐EMD -- nonlinear sample -- nonsinusoidal grid voltage conditions -- carrier‐based modulation scheme -- control approach -- balanced loading condition -- unbalanced loading condition -- Spartan 6 FPGA controller; Electric power production -- Periodicals; Electric power transmission -- Periodicals; Electric power distribution -- Periodicals; 621.3105
• DOI: 10.1049/iet-gtd.2018.7060
• Languages: English
• ISSNs: 1751-8687

Abstract

Abstract : In this study, a real‐time empirical mode decomposition (RT‐EMD) based control technique is adopted for effective mitigation of system harmonics under ideal and non‐ideal supply voltage conditions. The proposed control algorithm takes the active component of load current samples and the positive sequence voltage component for generating the desired reference. The fundamental component of load current is found by employing RT‐EMD, which decomposes the distorted non‐linear sample into a finite number of fine‐scale signals termed as intrinsic mode function (IMF). Each IMF is extracted adopting continuous calculation of upper and lower envelopes using a series pipeline structure which decreases the computational complexity. The proposed control algorithm takes the positive sequence voltage component for generating the desired reference so that the system can operate in non‐sinusoidal grid voltage conditions. The proposed control algorithm adopts carrier‐based modulation scheme for switching of the inverter module. The effectiveness of the proposed control approach is investigated in MATLAB‐Simulink environment with balanced and unbalanced loading condition and its experimental validation is carried out by a hardware prototype model using a Spartan 6 FPGA controller.