- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
Optimal Energy Management in a Standalone Microgrid, with Photovoltaic Generation, Short-Term Storage, and Hydrogen Production
摘要： This paper addresses the energy management of a standalone renewable energy system. The system is configured as a microgrid, including photovoltaic generation, a lead-acid battery as a short term energy storage system, hydrogen production, and several loads. In this microgrid, an energy management strategy has been incorporated that pursues several objectives. On the one hand, it aims to minimize the amount of energy cycled in the battery, in order to reduce the associated losses and battery size. On the other hand, it seeks to take advantage of the long-term surplus energy, producing hydrogen and extracting it from the system, to be used in a fuel cell hybrid electric vehicle. A crucial factor in this approach is to accommodate the energy consumption to the energy demand and to achieve this, a model predictive control (MPC) scheme is proposed. In this context, proper models for solar estimation, hydrogen production, and battery energy storage will be presented. Moreover, the controller is capable of advancing or delaying the deferrable loads from its prescheduled time. As a result, a stable and efficient supply with a relatively small battery is obtained. Finally, the proposed control scheme has been validated on a real case scenario.
关键词： model predictive control,standalone renewable energy systems,hydrogen,fuel cells,solar photovoltaic energy,deferrable loads,demand side management
更新于2025-09-23 15:21:01
-
Evaluation of the Success of a Small-Scale Photovoltaic Energy System
摘要： Solar photovoltaic energy generation is growing in Brazil and in the world. Considered a new investment alternative, many investors lack knowledge and difficulty in evaluating the success it will have with photovoltaic systems. This study aims to evaluate the percentage of investor success in a small scale photovoltaic power generation project in Brazil. A measurement modeling was developed through the methodology MCDM (AHP) and Key Performance Indicators (KPI). The case study was in a system of a supermarket of the state of Rio Grande do Sul, of 75kW of installed power. For the analysis of the importance of KPIs, 29 photovoltaic entrepreneurs in Brazil participated in the research. Analysis of the importance levels of the 33 KPI by the investor and the experts resulted in a 73.25% success rate of the project, classifying it as "Potential Success." Systematic analysis of a high initial capital investment is important in assisting the investor in decision making. The 33 KPI is relevant to an assessment of investor success.
关键词： Performance Measurement,Multicriteria Decision,Solar Photovoltaic Energy
更新于2025-09-12 10:27:22