Interval Type-2 Fuzzy Control of Shunt Active Power Filter
نویسندگان
چکیده
This paper proposes a new adaptive control technique for shunt active power filter (SAPF) by applying the interval type-2 fuzzy controller (IT2FC) in the DC voltage outer loop. This adaptive method achieved the main control objectives and compensated the active filter parameters uncertainties besides the unbalanced loads compensation without neutral wire. The interval type-2 fuzzy controller (IT2FC) offers flexibility and compensates the uncertainties within large ranges due to its footprint of uncertainty. The IT2 fuzzy controller proved flexibility and faster DC voltage transient response than the PI and type-1 fuzzy controllers due to its type-2 membership functions which describe uncertainties in contrast to the type -1 membership functions which describe vagueness. Simulation results proved that the IT2 fuzzy controller has faster response and robust performance against parameters variations and unbalanced loads compared to PI and type -1 fuzzy controllers
منابع مشابه
Robust Control of Shunt Active Power Filter Using Interval Type-2 Fuzzy Logic Controller for Power Quality Improvement
Original scientific paper It is well-known that shunt active power filter (SAPF) is widely used to reduce harmonic distortion and to compensate reactive power in electrical power systems. DC bus voltage control of SAPF is very important for excellent power quality. In the control of SAPF, DC bus voltage is controlled by conventional control methods such as PI and PID controllers. However, these...
متن کاملMitigation of Switching Harmonics in Shunt Active Power Filter Based on Variable Structure Control Approach
This paper presents a novel control approach used in shunt active power filter based on variable structure control combined with Random PWM technique (RVSC) that provides robust, fast, and more favorable performance for active power filter. This control strategy is compared with two other strategies to show the effectiveness of the introduced methods; pulse width modulated proportional-integral...
متن کاملA Hybrid Control Method for Stable Operation of Active Power Filters in Three-Phase Four-Wire Networks
The main goal of this study is the use of Lyapunov’s stability theory to a three-phase four-wire shunt active power filter (SAPF), since this method has been applied effectively to other areas of converter. The dynamic model of the SAPF is first established, after that, a combination of fuzzy tracking control and Lyapunov function is suggested in order to impose a desired transient waveform on ...
متن کاملPi, Fuzzy Logic Controlled Shunt Active Power Filter for Three-phase Four-wire Systems with Balanced, Unbalanced and Variable Loads
This paper presents a fuzzy logic, PI controlled shunt active power filter used to compensate for harmonic distortion in three-phase four-wire systems. The shunt active filter employs a simple method for the calculation of the reference compensation current based on Fast Fourier Transform. The presented Shunt Active Power filter is able to operate in balanced, unbalanced and Variable load condi...
متن کاملA Novel Fuzzy Variable-Band Hysteresis Current Controller For Shunt Active Power Filters
This paper presents a novel fuzzy control scheme applied to shunt active power filters for harmonic and reactive power compensation. A TSK type fuzzy logic controller is proposed for APF reference current generation. To control the maximum switching frequency of the converter within limit a novel fuzzy hysteresis band current controller is used. The band height, based on fuzzy control principle...
متن کامل