Application of mathematical morphology for power quality improvement in microgrid

Abstract

Summary This manuscript presents a novel mathematical morphology‐based shunt active filter (SHAF) for improving the power quality (PQ) in microgrid applications. The proposed approach is more concerned about the integration of renewable energy such as photovoltaic (PV) system and nonlinear load in the grid. On PQ, accuracy, and real‐time application point of view, in the proposed approach, a two‐way control strategy is developed. Firstly, to regulate the duty ratio of a boost converter (BC) and PV performance, a sliding mode control (SMC)–based novel maximum power algorithm (MPA) is proposed. Secondly, to eliminate the nonlinearity selectively, an improved active and reactive current decomposition (IP − IQ) technique is proposed. The improved IP − IQ contains a low pass mathematical morphology filter (LMMF), to extract the fundamental dc component. The proposed approach eliminates the conventional αβ and dq transformation, with the reduced cost of computation and improved tracking speed. To validate the proposed two‐way control strategy, it is simulated through MATLAB software, and the proposed results are compared with the conventional MPA and low pass filter–based dq (CLPF‐dq) approach.

AC,DC,and hybrid control strategies for smart microgrid application: A review

“…Regarding the above problems, a robust control technique for fluctuations free real power output of the VSC is an important suggestion for future SMG application 175 . In this regard, 176 to improve the PQ and PR of the proposed system, the researchers have suggested a novel mathematical morphology based I p ‐ I q technique by reducing the circuit complexity and design. In addition, to generate optimum power, a novel sliding mode control based maximum power algorithm is proposed.…”

“…Indicating that, by using the proposed approach, the system improves its performance significantly. More explanation about the control strategy and working condition is presented in Reference 176.…”

“…In addition, in Reference 178, to improve the low‐ and high‐frequency stability of PV generators, a novel control approach based advanced strategy is proposed and tested. In this regard, 176 to improve the stability of a larger system, a novel SMC topology‐based and morphology‐based control approach is proposed, to improve the stability of the system. The detailed explanation related to the stability improvement strategy is presented in Reference 176.…”

Lypunov theory combined with small signal linearization for regulated operation of a hybridDC/ACmicrogrid

“…Integration of renewable energy resources into power grid, 1,2 has led to the microgrid development for more accurate regulation of both AC and DC state variables 3‐5 . Among microgrid configurations, the hybrid DC/AC microgrid has attracted high attentions from prospective control system design in recent years 6‐9 .…”

Robust control approach for stability and power quality improvement in electric car

“…14 Many researchers have proposed different adaptive techniques to overcome the first type of problems. 15 However, during the nonlinear and disturbance conditions, the adaptive techniques lag their performance by increasing the torque ripples. As a solution, different adaptive techniques are proposed to overcome the nonlinearity present in the environment by increasing the stability and safety of the system.…”