Abstract
Background: Currently, power control of PV generation focuses on the Maximum Power Point Tracking (MPPT) strategy, with which PV systems is sensitive to the light, temperature, and micro-grid state, and introduces power fluctuation to the micro-grid.
Methods: With the schedulable requirements of Photovoltaic (PV) systems in the grid-tied mode, PV generation systems should possess constant power output capability. This paper proposes an approach for constant power control of PV systems in DC micro-grid. By analyzing the output characteristic between active power and voltage of PV systems, and acquisition of PV output current and the capacitor voltage, voltage control reference in the PV power-voltage curve is obtained by Lagrange interpolation fitting.
Result: With the implementation of closed-loop control of photovoltaic boost voltage, constant power output control of PV generation systems can be achieved. Further, this method is able to cope with the change of light and temperature and micro-grid bus voltage. This method is simple and has good environmental adaptability and fast-tracking speed.
Conclusion: Simulation results verify the effectiveness of the proposed control strategy compared with a perturb and observe method which can attain the same function.
Keywords: Constant power control, DC microgrid, lagrange interpolation fitting, MPPT, photovoltaic generation, schedulable requirements.
Graphical Abstract
Call for Papers in Thematic Issues
Advancements in Brain Tumor Detection and Treatment using Machine Learning, Deep Learning, and Blockchain Technology
Brain tumors are among the most challenging diseases to diagnose and treat, requiring specialized expertise and advanced technology for accurate detection and effective treatment. In recent years, machine learning and deep learning algorithms have shown promise in improving the accuracy and efficiency of brain tumor detection through medical imaging analysis. ...read more
Advances of Biometric Data Analysis to Boost Intelligent Applications
With the rapid development of artificial intelligence (AI) technology, more and more intelligent devices and applications are appearing in our daily lives, such as smart home, smart agriculture, health diagnosis, educational support, and environmental monitoring. Interaction with these devices or applications has become a pressing issue that can greatly improve ...read more
Attainment of SDGs through the Advancement in Solar Energy Systems
With less than a decade until we reach 2030, it is crucial to address the deep inequalities affecting not only our health but also our quality of life, and the economy of countries worldwide. Few of the UN's Sustainable Development Goals (SDGs) can be directly and indirectly achieved through the ...read more
Emerging Intelligent Computing Techniques and their Applications Using Machine Learning
This special issue will aim to discuss computational intelligence approaches, initiatives and applications in engineering and science fields (including Machine Intelligence, Mining Engineering, Modeling and Simulation, Computer, Communication, Networking and Information Engineering, Systems Engineering, Innovative Computing Systems, Adaptive Technologies for Sustainable Growth, and Theoretical and Applied Sciences). This collection should ...read more
Related Journals
Recent Patents on Engineering
7
2
1