Instantaneous Active and Reactive Power and Current Strategies for Current harmonics cancellation in 3-ph 4wire SHAF With both PI and Fuzzy Controllers

Suresh Mikkili, Anup Kumar Panda

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DOI: 10.4236/epe.2011.33036                

Abstract

Control strategies for extracting the three-phase reference currents for shunt active power filters are compared, evaluating their performance under different source conditions with PI and Fuzzy Controllers in MATLAB/Simulink environment When the supply voltages are balanced and sinusoidal, the two control strategies are converge to the same compensation characteristics; However, the supply voltages are distorted and/or un-balanced sinusoidal, these control strategies result in different degrees of compensation in harmonics. The compensation capabilities are not equivalent, with p - q control strategy unable to yield an adequate solution when source voltages are not ideal. Extensive simulations are carried out with PI controller and also with Fuzzy controller for both p-q and I_d-I_q control strategies under different main voltages. Extensive Simulations are carried out with PI as well as fuzzy controller for both p-q and I_d - I_q control strategies by considering different voltage conditions and adequate results were presented. On owing I_d - I_q method with fuzzy logic controller gives away an out-standing performance under any voltage conditions (balanced, un-balanced, balanced and non-sinusoidal).

Keywords

Harmonic Compensation, Shunt Active Filter (SHAF), p-q Control Strategy, i_d-i_q Control Strategy, PI Controller and Fuzzy Controller

Conflicts of Interest

The authors declare no conflicts of interest.

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