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Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator
Published on: February 14, 2025
176
Precision power quality control in grid-integrated microgrid via matrix pencil technique
Buddhadeva Sahoo1, Subhransu Ranjan Samantaray2, Mohammed M Alhaider3
1Department of Electrical and Electronics Engineering, SR University, Warangal, Telangana, 506371, India. buddhadeva@sru.edu.in.
Scientific Reports
|February 27, 2025
Summary
A novel Matrix Pencil-based Energy Management Control (MPEMC) enhances solar PV systems, improving power quality and efficiency. This advanced control strategy significantly reduces harmonic distortion and ensures stable grid integration.
Area of Science:
- Electrical Engineering
- Renewable Energy Systems
- Control Systems
Background:
- Grid-integrated solar photovoltaic (PV) systems require robust energy management for stable power quality and efficient operation.
- Existing methods often struggle with dynamic load variations and harmonic distortion, impacting overall system performance and grid compliance.
Purpose of the Study:
- To introduce and evaluate a Matrix Pencil-based Energy Management Control (MPEMC) for enhanced power quality (PQ) and power flow in grid-connected PV systems.
- To improve PV system efficiency, stabilize DC-link voltage, and reduce total harmonic distortion (THD) under dynamic conditions.
Main Methods:
- Developed a Matrix Pencil-based Energy Management Control (MPEMC) integrating a shunt active power filter (SAPF) and an incremental conductance-based optimal power tracking control (OPTC).
- Employed a logarithmic encoder for DC-link voltage control and Singular Value Decomposition (SVD) within the MP method to decompose non-linearities.
- Validated the MPEMC approach through simulations and hardware implementation on a Spartan-6 FPGA-based PV-microgrid platform, comparing results against DFT-EMC and TS-Fuzzy-EMC controllers.
Main Results:
- The MPEMC approach enhanced PV system efficiency by 4% (100 kW output) and achieved a DC-link voltage error reduction time under 0.12 s.
- SVD-MPEMC demonstrated 10-25% faster settling times and 10-15% lower peak overshoot compared to other controllers.
- Average Total Harmonic Distortion (THD) was reduced to 2.02% with SVD-MPEMC, significantly outperforming DFT-EMC (5.11%) and uncompensated systems (38.89%), while complying with IEEE-519 standards.
Conclusions:
- The proposed SVD-MPEMC offers a transformative solution for renewable energy integration, providing superior performance in grid active/reactive power stabilization and DC-link voltage regulation.
- The MPEMC approach ensures high response consistency with minimal oscillations and effectively manages non-linearities in grid-connected PV systems.
- Hardware validation confirms the effectiveness and reliability of the MPEMC for real-time grid applications.
Keywords:
Matrix Pencil-based energy management control (MPEMC)Power quality (PQ)Shunt active power filter (SAPF)Singular value decomposition (SVD)More Related Videos
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