Development of Control Techniques Using Modified Fuzzy Based SAPF for Power Quality Enhancement

Abstract

Low power distribution systems have severe power quality issues due to the non-linearity of several residential and industrial loads. The main power quality issue is the harmonics leading to the overheating of the transformers in the distribution systems. By employing passive filters, active filters, and custom power devices, the harmonics in the source current can be reduced. To overcome the drawbacks of conventional tuned filters and active power filters the modified shunt active power filter was introduced with the fuzzy logic controller. In this paper, an effective way of reducing the total harmonic distortion using three-phase three-wire shunt active filter is carried out and this has been investigated through three control methods namely synchronous reference frame theory, real and reactive power theory, and indirect reference current theory. The recognized control methods are implemented with the fuzzy controller to improve the performance of the induction motor drive. The hardware setup was implemented for the proposed fuzzy-based control technique to achieve better performance in terms of reduced total harmonic distortion and DC link voltage and improved speed performance of induction motor drive when compared to other control methods. Further power factor correction and better reactive power compensation are achieved by implementing hardware.

Experimental Investigations on Photovoltaic Interface Neutral Point Clamped Multilevel Inverter-Based Shunt Active Power Filter to Enhance Grid Power Quality

“…A number of approaches have been developed to reduce to mitigate the impact of such NL loads on power quality. These techniques include passive filters, series, parallel, and hybrid active power filters [12], [13].…”

Solar photovoltaic‐interfaced shunt active power filter implementation for power quality enhancement in grid‐connected systems

“…Utilizing the controllers, the value of the capacitor is regulated. 25,26 Conventional controllers, like PI and PID, need appropriate computational formulations to function correctly. These equations are challenging to tune, and traditional controllers perform poorly during variable load conditions.…”

“…For this reason, the line voltage is the primary factor in deciding on the capacitor value. Utilizing the controllers, the value of the capacitor is regulated 25,26 …”

Design of 15 level reduced switches inverter topology using multicarrier sinusoidal pulse width modulation

“…Moreover, selective and active harmonic exclusion nearest vector control method and synchronous optimal PWM are used for converter with low frequency PWM techniques [16], [17]. Reduced switches MLIs are predominantly used nearest state control and multicarrier based sinusoidal PWM (SPWM) schemes [18], [19].…”