研究目的
Presenting a new control method for photovoltaic generator that reshapes the buck plant converter and cancels its right half-pole while maintaining tight reference tracking and disturbance rejection, addressing the nonlinear behavior due to varying environmental conditions and battery state of charge boundaries.
研究成果
The paper concludes that implementing a robust disturbance observer controller significantly improves the stability and performance of the PVG-BuPS-Load system, achieving nearly nominal response across the entire operation range despite varying environmental conditions and operating points.
研究不足
The study acknowledges the complexity of controlling the entire operating range of the PVG-BuPS-Load system due to varying environmental conditions and the potential for unstable poles in the system transfer function. The proposed method requires careful design to ensure stability and performance across all operating points.
1：Experimental Design and Method Selection:
The study employs a robust disturbance observer controller to stabilize the PVG-BuPS-Load system, focusing on reshaping the buck converter plant and canceling its right half-pole.
2：Sample Selection and Data Sources:
The system under study includes a photovoltaic generator interfaced with a buck power stage (BuPS) and a battery storage system, with parameters defined in Tables 1, 2, and
3：List of Experimental Equipment and Materials:
Includes a photovoltaic generator, buck converter, Lithium-ion battery, and control system components as detailed in the paper.
4：Experimental Procedures and Operational Workflow:
The methodology involves designing a controller that ensures stability across the entire operating range of the PVG, including steps for controller implementation and system response evaluation.
5：Data Analysis Methods:
The analysis includes Bode diagrams for frequency response and time-domain performance evaluation to assess system robustness and response uniformity.
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