Advanced Structures, Fault Diagnosis and Tolerant Control of Permanent Magnet Synchronous Motors
MDPI » Energies
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1d ago
Power System Analysis, Operation and Control Editors: Yuan Liao, Ke Xu ..read more
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Assessing the Costs of Commercialising Tidal Energy in the UK
MDPI » Energies
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1d ago
An Advanced Explainable Belief Rule-Based Framework to Predict the Energy Consumption of Buildings ..read more
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Research on the EMA Control Method Based on Transmission Error Compensation
MDPI » Energies
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1d ago
20 pages, 4089 KiB   19 pages, 734 KiB   In light of the rapid development of electrified railways, the safety and stability of train operations, as well as the catenary’s interaction with current quality, have garnered widespread attention. Electrified train operation with additional track irregularities serves as a principal excitation source within the vehicle–bridge–catenary system, significantly influencing the vibration characteristics of the system. Addressing the aforementioned issues, we first established the vehicle–track dynamics model and the bridge–catenary finite elemen ..read more
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Mining Technologies Innovative Development II
MDPI » Energies
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1w ago
Mining Innovation: Volume III Editors: Sergey Zhironkin, Dawid Szurgacz ..read more
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Simulation Study on Combustion Performance of Ammonia-Hydrogen Fuel Engines
MDPI » Energies
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1w ago
19 pages, 1743 KiB   Optimizing High-Voltage Direct Current Transmission Corridors: Dynamic Thermal Line Rating for Enhanced Renewable Generation and Greenhouse Gas Emission Reductions (This article belongs to the Section Hydrogen is a carbon-free energy source that can be obtained from various sources. The blending of hydrogen represents a transitional phase in the shift from natural gas systems to hydrogen-based systems. However, concerns about the safety implications of introducing hydrogen have led to extensive discussions. This paper utilizes Fluent 17.0 numerical simulation software ..read more
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A New Method for the Techno-Economic Analysis and the Identification of Expansion Strategies of Neutral-Temperature District Heating and Cooling Systems
MDPI » Energies
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3w ago
Neutral-temperature district heating and cooling (NT-DHC) is a recent concept in the district heating sector. The current literature does not directly address the ability to create comprehensive master plans for NT-DHC systems and reliably model their performance. This research presents a new approach for the evaluation and planning of NT-DHC systems. The methodology involves the use of a knapsack optimization algorithm to perform a comprehensive analysis of the conditions that make the NT-DHC solution competitive against individual heating and cooling technologies. The algorithm determines th ..read more
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Analyzing Geospatial Cost Variability of Hybrid Solar–Gravity Storage System in High-Curtailment Suburban Areas
MDPI » Energies
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3w ago
Supplementary File 1 (ZIP, 7 KiB) The increased decentralization of renewable energy has increased curtailment rates in stagnating demand zones, increasing the levelized cost of energy (LCOE). The geographically dynamic nature of gravity energy storage (GES) is emerging in the field of mechanical energy storage, over pumped hydro. However, GES costs vary geospatially, specifically in decentralized suburban areas, due to the impact of urban socioeconomics. This study aims to find a mathematical approximation of a cost-optimized location for suburban Solar–GES hybrid systems in curtailment-prone ..read more
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An Off-Site Power Purchase Agreement (PPA) as a Tool to Protect against Electricity Price Spikes: Developing a Framework for Risk Assessment and Mitigation
MDPI » Energies
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3w ago
Significant price spikes occurred as early as 2021, initially driven by low gas storage levels, a post-pandemic economic rebound and then exacerbated by the Russian invasion of Ukraine. The situation had a range of wide-ranging consequences, from rising inflation, increasing energy poverty, food insecurity, business bankruptcies and recession. A well-known tool to protect energy consumers from energy price spikes, while at the same time contributing to the development of sustainable technologies, is Power Purchase Agreements. PPAs are long-term bilateral contracts for the purchase and sale of ..read more
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Experimental Study on the Thermal Reduction of CO2 by Activated Solid Carbon-Based Fuels
MDPI » Energies
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3w ago
thermal reduction, a technology combining solid carbon activation and high-temperature CO reduction was proposed, named as activated-reduction technology. In this study, this technology is realized by using a circulating fluidized bed and downdraft reactor. Reduced agent parameters (O concentration) greatly affect the reduction effect of CO . In addition, the effect of the activation process on different carbon-based materials can help to broaden the range of carbon-based materials used for CO reduction, which is also an important issue. The following three points have been studied through exp ..read more
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Reinforcement Learning for Efficient Power Systems Planning: A Review of Operational and Expansion Strategies
MDPI » Energies
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3w ago
The efficient planning of electric power systems is essential to meet both the current and future energy demands. In this context, reinforcement learning (RL) has emerged as a promising tool for control problems modeled as Markov decision processes (MDPs). Recently, its application has been extended to the planning and operation of power systems. This study provides a systematic review of advances in the application of RL and deep reinforcement learning (DRL) in this field. The problems are classified into two main categories: Operation planning including optimal power flow (OPF), economic dis ..read more
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