scholarly journals Enhancement of Power Quality with Sliding Mode Controlled Hybrid Active Power Filter Based on Variable Scaling Hybrid Differential Evolution

2015 ◽  
Vol V4 (10) ◽  
Author(s):  
Y. Swetha ◽  
B. Mahesh babu ◽  
L. Ravi Srinivas ◽  
S. S. Tulasiram ◽  
Keyword(s):  
Differential Evolution ◽  
Power Quality ◽  
Sliding Mode ◽  
Active Power Filter ◽  
Active Power ◽  
Power Filter ◽  
Hybrid Active Power Filter

scholarly journals Fuzzy Sliding Mode Based Series Hybrid Active Power Filter for Power Quality Enhancement

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Soumya Ranjan Das ◽  
Prakash K. Ray ◽  
Asit Mohanty
Keyword(s):  
Power Quality ◽  
Reactive Power ◽  
Sliding Mode ◽  
Harmonic Distortion ◽  
Fuzzy Rule ◽  
Active Power Filter ◽  
Active Power ◽  
Power Filter ◽  
Hybrid Active Power Filter ◽  
Fuzzy Sliding Mode

This paper contributes an innovative gating signal generation technique based on fuzzy sliding mode pulse width modulation (FSMPWM) with a Series Hybrid Active Power Filter (SEHAPF) for reducing the total harmonic distortion (THD). Hybrid filters are used for compensating reactive power on the load side and mitigate harmonics for the growth of power quality under variable source and load conditions in the utility system. The objective of the paper is to eradicate the various power quality (PQ) problems with development in power factor and reducing distortion in transmission and distribution line due to harmonics. With the implementation of FSMPWM of the proposed filter, the gating pulses are generated by implementing a Mamdani fuzzy rule with sliding surfaces. For producing a fixed pulse the presented method reduces the chattering reaction by controlling the narrow boundary coating on the sliding surface. The results of the projected technique are analyzed and compared with the traditional hysteresis band current controller (HCC). The overall proficiency and results are examined with the help of MATLAB/SIMULINK environment.

scholarly journals Design and analysis of a Three Phase Transformerless Hybrid Series Active Power Filter based on sliding mode control using PQ-theory and stationary reference frames

2019 ◽  
Vol 16 (3) ◽  
pp. 289-310 ◽  
Author(s):  
Vinay Naguboina ◽  
Satish Gudey
Keyword(s):  
Power Quality ◽  
Single Phase ◽  
Sliding Mode ◽  
Active Power Filter ◽  
Constant Load ◽  
Active Power ◽  
Phase System ◽  
Load Voltage ◽  
Power Filter ◽  
Three Phase

In this work, a Three phase Transformerless Hybrid Series Active Power Filter (THSeAF) based on Sliding Mode Control (SMC) is proposed to mitigate the voltage and current distortions present in an electrical distribution systems (EDS). A Sliding Mode Controller is designed by controlling the parameters present on the load side as well as source side of the system. Three separate voltage source converters (VSC) are used. The mod1elling of the system is derived by considering a single-phase system by using state space analysis. The frequency response characteristics have been derived for the single-phase system and the stability of the system is studied. It is observed that the system has good stability margins when the SMC is applied at the source side compared to load side. Simulation results obtained in PSCAD/EMTDC v4.6 have been observed for power quality issues like voltage sags, voltage swells, voltage distortions, voltage unbalances and their concurrent occurrence. The approach of stationary reference frame was used for source side control and PQ theory is used for load side control. It is observed that the proposed controller works well in obtaining a stable and constant load voltage during these power quality issues. The difference in settling time observed is around 4 ms for the load side and source side control. The THD present in the load voltage is near about 1%. The SMC is found to be robust in obtaining a constant load voltage with low THD and an improved power factor.

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