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Earlier sources: Energy
Energy research and engineering concern how power is produced, stored, delivered, and consumed. Follow solar and nuclear power, fusion, geothermal systems, batteries, electricity grids, and changing power demand.
SYMTRI organizes observations from public sources into a living map. Connections reflect shared subject matter; they do not establish causation or endorse a source.
Open in the map ↗714 classified signals in the fourteen-day window. Recent momentum: steady. These counts include signals awaiting readable evidence.
Earlier sources
Up to ten sources with readable evidence, ordered by their feed timestamp. These archive sources can be older than the live fourteen-day window. This list is a sample, not a measure of total activity. Dates distinguish paper publication, repository creation, model/dataset activity, Hacker News posts, and KEV catalog additions. “First archived” records when SYMTRI first stored the signal.
- OpenAlex · Published · First archived
Coupled effects of volumetric energy density and Y2O3 content on microstructure and tensile behavior of LPBF-fabricated CoCrFeNi high-entropy alloys ↗
Nano-Y 2 O 3 -reinforced CoCrFeNi high-entropy alloys containing 0.5, 1.0, and 1.5 wt% Y 2 O 3 were fabricated by laser powder bed fusion (LPBF) at volumetric energy densities (VEDs) of 160, 177.8, 200, and 228.6 J/mm 3 to examine the coupled effects of energy input and Y 2 O 3 content on microstructure and tensile response. X-ray diffraction, electron backscatter diffraction, transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy, tensile testing, and fracture analysis were employed. The FCC CoCrFeNi matrix remain…
- OpenAlex · Published · First archived
Optimal Configuration and Operation of Grid-Forming Electro-Hydrogen Energy Storage in New Power System Considering Power and Energy Balance ↗
Aiming to address the problem of power and energy imbalance caused by a high proportion of new energy grid connections, the influence of fluctuation characteristics of both sides of the load on power and energy balance of new power systems is analyzed, and an evaluation system including core indicators such as power balance margin, peak regulation demand index and source–load power matching degree is proposed. Then, by analyzing the influence of the operation of electrolytic cell, hydrogen fuel cell and Grid-Forming energy storage equipment on the inertia level of a system, the inertia respons…
- OpenAlex · Published · First archived
Multi-model collaborative early warning for battery systems with integrated fiber optic sensors ↗
Abstract The safety assessment of battery systems is constrained by sparse temperature measurements and monolithic diagnostic frameworks in conventional battery management systems (BMS). To address this, we propose a multi-model collaborative thermal-runaway early-warning framework using distributed temperature sensing. An integrated sensing scheme increases temperature sensing points within the battery pack from 32 to 540 with minimal wiring complexity and is validated in real-world vehicle operation. We establish a functional relationship between temperature Shannon entropy (SE) and average…
- OpenAlex · Published · First archived
Electromagnetic Interference resilient augmented state nonlinear observer for coupled battery converter dynamics in electric vehicles ↗
Abstract The design and analysis of a novel EMI-aware augmented-state nonlinear observer for the electric vehicle battery-converter subsystem considering corrupted voltages and currents is presented in this study. As opposed to classical model-based observer design methodologies, which view any type of sensor imperfection as noise, this novel approach involves incorporating structured electromagnetic interference influences, sensor bias, and conversion error as part of the modeling framework. A reduced first-principles battery–converter model is developed to describe the dominant SOC, polariza…
- OpenAlex · Published · First archived
Securing IoT–cloud sensing systems for viable renewable energy supply chains ↗
Secure Internet of Things–cloud integration underpins information visibility, coordination, and continuity in renewable-energy supply chains, yet implementation constraints can undermine these capabilities, particularly in emerging economies. This study identifies constraints affecting secure IoT–cloud implementation in Mexico's renewable-energy supply chains, determines which warrant priority managerial attention, and develops targeted interventions intended to support supply chain viability. A systematic literature review of 104 studies, followed by two rounds of fuzzy Delphi refinement, yie…
- OpenAlex · Published · First archived
Multi-Objective Optimization of a Photovoltaic–Hydrogen Integrated Energy System for Residential Communities ↗
To achieve low-carbon and low-cost energy supply while meeting the dynamic electricity, heating, and cooling demands of residential communities, an integrated energy system combining solar energy and hydrogen energy is proposed. The start-up characteristics of electrolyzers are incorporated into the system model. With key equipment capacities selected as decision variables, a four-objective optimization framework integrating the non-dominated sorting genetic algorithm II with an elitist strategy and the technique for order preference by similarity to an ideal solution is established to optimiz…
- OpenAlex · Published · First archived
Uni-Mamba: A unified framework for cross-material and cross-condition battery state-of-health estimation via domain-adaptive state space models ↗
Accurate state-of-health (SOH) estimation across different battery chemistries and operating conditions remains challenging because material properties, cycling protocols, and long-term temporal evolution strongly influence degradation features extracted from measurable signals. These differences lead to substantial distribution shifts between source- and target-domain batteries, thereby limiting the cross-domain transferability of conventional data-driven models. To address this issue, this paper proposes Uni-Mamba, a cross-domain SOH estimation framework that integrates health-feature repres…
- OpenAlex · Published · First archived
Genetic Algorithm-Optimized Active Disturbance Rejection Control for Robust Voltage Regulation in Standalone DFIG-Based Wind Energy Systems with Battery Storage: Real-Time Experimental Implementation ↗
The design, modeling, and experimental validation of a Genetic Algorithm (GA)-optimized Active Disturbance Rejection Control (ADRC) strategy for voltage regulation in a standalone Wind Energy Conversion System (WECS) based on a Doubly Fed Induction Generator (DFIG) are presented in this study. The proposed system is designed to operate under variable wind conditions and nonlinear load profiles, with a Battery Energy Storage System (BESS) connected to the rotor side to enhance system performance and stability. A battery management algorithm is incorporated to ensure safe operation and maintain…
- OpenAlex · Published · First archived
Integrated Pumping and Direct Energy Recovery in a Digital Hydraulic Boom Drive System for Excavators ↗
Conventional valve-controlled hydraulic excavator boom drive systems suffer from low energy conversion efficiency and severe throttling losses. To address this issue, this paper proposes a pump-controlled digital hydraulic drive system based on a Direct Energy Recovery Digital Pump (DERDP). The DERDP integrates hydraulic pumping and boom potential energy recovery within a single unit, enabling both energy recuperation and precise flow regulation. An AMESim simulation model of the system is developed and validated against experimental measurements from a dedicated hardware-in-the-loop test benc…
- OpenAlex · Published · First archived
A Comprehensive Teaching Experiment for Energy Recovery from Waste Face Masks by Pyrolysis and CO2-Assisted Gasification ↗
Carbon-rich organic solid wastes should be introduced to students not only as pollutants to be disposed of, but also as secondary carbon resources that can be converted into energy carriers and useful products. To connect waste valorization, low-carbon energy conversion, and experimental engineering education, this study reports a comprehensive teaching experiment based on the fixed-bed pyrolysis and CO2-assisted gasification of polypropylene-rich waste, together with the complete reference dataset and calculation workflow that accompany it. Waste face masks are used as a representative and fa…
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How to assess evidence about Energy
Check each original source for its methods, release status, limitations, and supporting data. A repository announcement, a preprint, and a published study provide different kinds of evidence. SYMTRI’s subject classification helps discovery; it does not independently validate the source’s claims.
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