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TS-fuzzy controlled active power filter for load compensation

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Summary form only given。 The paper describes the application of Takagi-Sugeno (TS) type fuzzy logic controller to three-phase shunt active power filter (APF) for the power quality improvement and reactive power compensation required by a non-linear load。 The advantage of fuzzy logic control is that it does not require a mathematical model of the system。 The application of Mamdani type fuzzy logic controller to three-phase shunt active power filter have been investigated earlier but it has the limitation of more number of fuzzy sets and rules。 Therefore， it needs to optimize large number of coefficients， which increases the complexity of the controller。 On the other hand， TS fuzzy controllers are quite general in that they use arbitrary input fuzzy sets， any type of fuzzy logic， and the general defuzzifier。 Moreover， TS fuzzy controller could be designed by using less number of rules and classes。 Further， in this paper hysteresis current control mode of operation is implemented for PWM switching signal generation。 Computer simulation results show that the dynamic behavior of TS fuzzy controller is better than the conventional Pl controller and is found to be more robust to changes in load and other system parameters compared to the conventional Pl controller。

active filterscontrol system synthesiselectric current controlfuzzy controlfuzzy set theoryload (electric)power filterspower supply qualityAPFMamdani type fuzzy logic controllerPWM switching signal generationPl controllerTS-fuzzy controlTaka

Mishra, S.

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Power Engineering Society General Meeting, 2006. IEEE

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