A comparative analysis between the PI and fuzzy controllers for current conditioning using a shunt active power filter

This paper presents a comparative analysis between the PI and fuzzy controllers applied in the current control loop of a single-phase shunt active power filter. The active filter is used to compensate the reactive power and suppress the current harmonics components of nonlinear loads. The compensation reference current is obtained from the synchronous reference frame algorithm. The total harmonic distortion of the compensated source current, the utility power factor and the digital processing time are used as evaluation criteria to determine the performance of the PI and fuzzy current controllers. Simulation and experimental results are also presented in order to validate the theoretical development.

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