Modelling and Optimisation of Ship Energy Systems 2023最新文献

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Decentralized Power Sharing with Frequency Decoupling for a Fuel Cell-Battery DC Shipboard Power System 燃料电池-电池直流舰载供电系统的分散式功率共享与频率去耦

Modelling and Optimisation of Ship Energy Systems 2023 Pub Date : 2024-01-03 DOI: 10.59490/moses.2023.670

Timon Kopka, Foivos Mylonopoulos, Andrea Coraddu, Henk Polinde

{"title":"Decentralized Power Sharing with Frequency Decoupling for a Fuel Cell-Battery DC Shipboard Power System","authors":"Timon Kopka, Foivos Mylonopoulos, Andrea Coraddu, Henk Polinde","doi":"10.59490/moses.2023.670","DOIUrl":"https://doi.org/10.59490/moses.2023.670","url":null,"abstract":"The maritime industry is under increasing pressure to reduce its carbon footprint by adopting new energy generation and storage technologies in shipboard power systems (SPS). Fuel cells (FCs) show great potential as primary power sources when hybridized with energy storage systems (ESS). Integrating different technologies in future SPS requires the coordination of power generation and storage modules, which can be facilitated by DC technology with power electronics interfaces. However, studies on FC integration have primarily focused on small-scale applications with centralized control architectures. There has been little research on the modular control of multiple FC and battery modules in SPS. This study proposes a decentralized droop-based power sharing approach with load frequency decoupling to efficiently utilize power system modules based on their dynamic capabilities. The proposed strategy further incorporates decentralized voltage regulation and state-of-charge (SoC) management functions. The methodology was applied to a short-sea cargo vessel with an FC-battery DC power system. The results indicate that the mission load profile can be satisfied while limiting fluctuations in the FC output power. Moreover, the proposed strategy achieves the same voltage regulation performance as a centralized proportional-integral (PI) controller and can be easily tuned to achieve load frequency decoupling with the desired time constant. Finally, a comparative analysis shows how the trade-off between the dynamic operation of the FC and the discharge depth of the ESS is affected by the choice of time constant.","PeriodicalId":513616,"journal":{"name":"Modelling and Optimisation of Ship Energy Systems 2023","volume":"47 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139451777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

0D Model for the Comparative Analysis of Hydrogen Carriers in Ship’s Integrated Energy Systems 用于船舶综合能源系统中氢载体比较分析的 0D 模型

Modelling and Optimisation of Ship Energy Systems 2023 Pub Date : 2024-01-03 DOI: 10.59490/moses.2023.669

E. V. Van Rheenen, J. T. Padding, K. Visser

{"title":"0D Model for the Comparative Analysis of Hydrogen Carriers in Ship’s Integrated Energy Systems","authors":"E. V. Van Rheenen, J. T. Padding, K. Visser","doi":"10.59490/moses.2023.669","DOIUrl":"https://doi.org/10.59490/moses.2023.669","url":null,"abstract":"Hydrogen carriers are attractive alternative fuels for the shipping sectors. They are zero-emission, have high energy densities, and are safe, available, and easy to handle. Sodium borohydride, potassium borohydride, dibenzyltoluene, n-ethylcarbazole, and ammoniaborane are interesting hydrogen carriers, with high theoretical energy densities. The exact energy density of these hydrogen carriers depends on the integration of heat and mass with the energy converters. This combination defines the energy efficiency and, thus, the energy density of the system. Using a 0D model, we combined the five carriers with two types of fuel cells (PEM and SOFC), an internal combustion engine and a gas turbine. This resulted in 20 combinations. Despite the limitations of the 0D model and the occasional difficulty of validating input values, this model still produces exciting findings, which are valuable for further research. For the dehydrogenation of both dibenzyltoluene and n-ethylcarbazole, an external hydrogen burner is required if no waste heat resources from the integrated system are available. For the borohydrides, on the other hand, energy integration is essential for reducing cooling power. Dehydrogenation produces substantial energy, but only a fraction of this energy can be used for internal preheating. Dehydrogenation of ammoniaborane produces less energy. Among all hydrogen carriers, both ammoniaborane and sodium borohydride provide energy densities comparable to that of marine diesel oil. In particular, ammoniaborane possesses a remarkably high energy density. Thus, we conclude, that hydrogen carriers are attractive alternative fuels that deserve more attention, including their potential performance for hydrogen imports.","PeriodicalId":513616,"journal":{"name":"Modelling and Optimisation of Ship Energy Systems 2023","volume":"37 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139452063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Co-Design and Energy Management for Future Vessels 未来船舶的协同设计和能源管理

Modelling and Optimisation of Ship Energy Systems 2023 Pub Date : 2024-01-03 DOI: 10.59490/moses.2023.666

Steven Wilkins, U. Shipurkar, Avedis Dadikozyan, Christian Veldhuis

{"title":"Co-Design and Energy Management for Future Vessels","authors":"Steven Wilkins, U. Shipurkar, Avedis Dadikozyan, Christian Veldhuis","doi":"10.59490/moses.2023.666","DOIUrl":"https://doi.org/10.59490/moses.2023.666","url":null,"abstract":"The maritime industry is undergoing a significant shift towards more sustainable and efficient forms of transportation. As a result, designing Power, Propulsion and Energy (PPE) Systems for future vessels presents new challenges that require a systematic approach that reduces the risk in development and implementation. This paper focuses on three aspects of such a systematic approach: Model-Based System Engineering (MBSE), Co-design, and Verification and Validation. The MBSE approach can be used to mitigate the risks associated with the transition by maintaining a clear traceability of user needs, functional requirements and physical realizations. A rigorous needs analysis and functional design reduces the optimisation design space that results in a significant reduction in the complexity of a design optimisation problem. Further, co-design is discussed as a methodology for a combined optimisation of the hardware and software design where the Modular Energy Management approach supports automated controller generation for the optimisation, a key challenge when optimising PPE systems. An important aspect of the MBSE approach is the use of models for the verification and validation of the developed designs. However, the successful use of models is contingent on their applicability. This paper proposes a way to categorise model confidence for verification and validation studies.","PeriodicalId":513616,"journal":{"name":"Modelling and Optimisation of Ship Energy Systems 2023","volume":"113 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139387957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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