Abstract
With sub-millisecond latency, 10 million devices per square kilometer of connectivity, and terabit Photovoltaic (PV) systems are becoming increasingly important in today’s electricity networks. The fast growth of these installations is moving the focus from simply putting up the solar panels to ways to predict how much electricity they will produce in the future, ways to get the maximum generation from the panels (maximum power point tracking or MPPT), and ways to intelligently manage energy. At the same time, several different research articles demonstrate that artificial intelligence (AI) is becoming a fundamental part of three interrelated functions of PV: predicting future PV production, rapidly and stably extracting available power, and scheduling the interactions between PVs, batteries, loads, and the grid. The majority of reviews focus only on one of three areas: forecasting, MPPT, or energy management, while actual PV systems increasingly require those functions to be simultaneously optimized.
This review establishes a common technical framework across all three areas. It provides an overview of recent work on AI-based PV forecasting, smart and hybrid MPPT, and AI-enabled energy management; compares separate and hybrid approaches to all three processes; establishes a comprehensive benchmark and simulation framework from the literature reviewed; and identifies a number of key research areas needing attention, including benchmarks being established, quantifying uncertainties in the results, transferability of the results to other applications, battery aging considerations, explainability of the models being produced by the algorithms, and deployment based on digital twins.
The primary conclusion is that hybrid AI approaches currently represent a significant amount of the future direction for intelligent PV systems. In forecasting, applications of hybrid and physics-based deep-learning techniques lead to improved spatiotemporal characterizations of forecast uncertainty and improved robustness in their ability to forecast; in MPPT, the use of hybrid methods leads to better overall balancing of global vs. local searches for maximum power in partially shaded scenarios; and in energy management, the combination of forecast-based reinforcement learning methods and hybrid predictive control strategies provide the best overall balance between adaptability and operational constraints.
Keywords
Power Optimization Photovoltaic Forecasting Maximum Power Point Tracking Energy Management Deep Learning Reinforcement Learning Hybrid Intelligent SystemsReferences
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