A novel centralized energy management approach for power quality improvement

Abstract

This manuscript proposes a novel centralized energy management approach (CEMA) for power quality (PQ) improvement in a solar‐battery based hybrid microgrid systems (HMSs) during both grid following and grid forming mode of operation. In the proposed HMS, a novel maximum power tracking algorithm based distributed generator control (DGC) is suggested to extract optimum power from the solar‐battery system and an energy storage control (ESC) is suggested to enhance the power transfer capability during power deficit/shortage conditions. Further, a voltage and frequency controller (VFC) is proposed to offer better coordination between the ac‐grid and dc‐grid, and improved the power quality of HMS. Moreover, the proposed CEMA smoothen the power and voltage flow of the inverter flexibly and HMS during uneven power generation, fault conditions, and consumer load demand. Even during the transition between two operating modes, CEMA also offers a stable voltage and frequency regulation for both ac and dc load. The proposed approach facilitates extra load integration without using an extra converter, degrading the power quality and cost. To test the performance of CEMA, the MATLAB environment‐based design HMS, and control model is tested during different operating conditions.

Neural Network and Fuzzy Control Based 11-Level Cascaded Inverter Operation

“…Wind H-bridge inverter (WHBI) is designed by combining an auxiliary circuit and a singlephase inverter. The auxiliary circuit consists of four diodes (D 1 -D 4 ), and an operating switch (S L ) is incorporated between them [12][13][14][15][16], and the single-phase inverter consists of four operating switches (S 5 -S 8 ). In addition to that, four operating switches (S 1 -S 4 ) are used to design the solar H-bridge inverter (SHBI).…”

“…Due to the increased cost and less durability of SD, different control approaches are suggested in [13,14] to reduce additional power injections and the burden of HES. Later on, researchers decrease the cost of the SD with an increase in the life cycle [15].…”

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

“…Despite the merits of HMG, the coordination and control of hybrid microgrid are becoming a challenging issue. To solve these problems, in References 112,116,117, and 118, different control solutions are provided for HMG operation. In the previously published papers, different control strategies, such as current shaping control, centralized power management approach, hybrid instantaneous theory, and novel restoration technique‐based approaches, are proposed for solving the coordination bidirectional converter problems and improving the stability of HMG operation.…”

“…In Reference 116, due to the sensor‐less current shaping control operation, the cost and switching losses significantly decreased to a lesser value and improves the efficiency of the system's performances. In Reference 118, the novel centralized energy management approach (CEMA) offers wireless communication and the CEMA is regulated through the novel control algorithms, such as distributed generation control, battery energy management control, and voltage and frequency control.…”

Execution of advanced solar‐shunt active filter for renewable power application

“…The larger plants including Bhadla Solar Park (1515 MW), Kurnool Ultra Mega Solar Park (750 MW), and Charanka Solar Park (690 MW) in India, Topaz Solar Plant (550 MW), Desert Sunlight Solar Plant (550 MW AC ), and Carrizo Energy Solar Plant (177 MW) in the United States, and Longyangxia Dam Solar Park in PRC (850 MW) are installed [11][12][13]. Due to the huge penetration of renewable solar plants into the power system, there is a significant decrease in power system stability [14,15]. Smart solar inverter topologies like constant power factor (pf), frequency, active and reactive voltage/power, low/high voltage/frequency ride-through (LVRT, HVRT, LFRT, and HFRT) [16] have been suggested and used for a larger renewable integrated system [17,18].…”