研究目的
To model mathematically the generator-ESD interaction and implement strategic loading for the ESD system to reduce fuel consumption and emissions.
研究成果
The study concludes that strategic loading of ESDs can significantly reduce fuel consumption and emissions in hybrid marine power plants, especially when generators are disconnected. The combination of optimum set-point operation and peak shaving is advantageous for minimizing fuel consumption. The methodology requires deep understanding of generator properties for every possible operation condition.
研究不足
The study assumes that the ESD inner controller is stable and that the generator inner controller is stable, which may not account for all real-world operational complexities. The SFOC and FOC curves are discrete measurements, requiring interpolation which may affect accuracy.
1：Experimental Design and Method Selection:
The study uses a new model to calculate fuel saving and emission reduction potential based on ESD maximum charge/discharge rate, engine efficiency, and SFOC curve. Spline approximation and linear interpolation are used for numerical solution and optimization.
2：Sample Selection and Data Sources:
Data from hybrid marine power plants with ESDs are used, including generator disconnection scenarios.
3：List of Experimental Equipment and Materials:
Energy storage devices (batteries and ultra-capacitors), diesel and gas engines, generators.
4：Experimental Procedures and Operational Workflow:
The study analyzes several cases with generator disconnection and without it, using spline approximation and linear interpolation for optimization.
5：Data Analysis Methods:
The optimization process uses the Karush–Kuhn–Tucker method and Lagrange multipliers to minimize fuel consumption.
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