Junwei Lu
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View article: Multi-Objective Optimization of Gas Storage Compressor Units Based on NSGA-II
Multi-Objective Optimization of Gas Storage Compressor Units Based on NSGA-II Open
This study addresses the parallel operation of multiple compressor units in the gas injection process of gas storage facilities. A multi-objective optimization model based on the NSGA-II algorithm is proposed to maximize gas injection volu…
View article: Contextual Online Uncertainty-Aware Preference Learning for Human Feedback
Contextual Online Uncertainty-Aware Preference Learning for Human Feedback Open
Reinforcement Learning from Human Feedback (RLHF) has become a pivotal paradigm in artificial intelligence to align large models with human preferences. In this paper, we propose a novel statistical framework to simultaneously conduct the …
View article: Two-Stage Multi-Objective Optimal Planning of Hybrid AC/DC Microgrid by Using ϵ-Constraint Method
Two-Stage Multi-Objective Optimal Planning of Hybrid AC/DC Microgrid by Using ϵ-Constraint Method Open
In this paper, a multi-objective mixed integer linear programming (MOMILP) approach is proposed for the optimal planning of battery energy storage systems (BESSs) and the interlink converter (ILC) in hybrid AC/DC microgrids (HMGs). The ILC…
View article: Stability improvement of microgrids under dynamic load conditions: A new adaptive virtual synchronous generator based virtual inertia control approach
Stability improvement of microgrids under dynamic load conditions: A new adaptive virtual synchronous generator based virtual inertia control approach Open
The virtual synchronous generator (VSG) exhibits prominent features such as communication-less control in microgrids due to its virtual inertia support. However, basic VSG control may lead to active power oscillations, causing improper tra…
View article: Dynamic Control of Isolated Network Microgrids: A Resilient Backpropagation Neural Network-Based Virtual Inertia Control Approach
Dynamic Control of Isolated Network Microgrids: A Resilient Backpropagation Neural Network-Based Virtual Inertia Control Approach Open
In isolated networked microgrid with high penetration of solar and wind-based generation, maintaining system stability and achieving optimal dynamic performance poses significant challenges due to reduced mechanical inertia traditionally p…
View article: Scalable Gaussian Process Regression Via Median Posterior Inference for Estimating Multi-Pollutant Mixture Health Effects
Scalable Gaussian Process Regression Via Median Posterior Inference for Estimating Multi-Pollutant Mixture Health Effects Open
Humans are exposed to complex mixtures of environmental pollutants rather than single chemicals, necessitating methods to quantify the health effects of such mixtures. Research on environmental mixtures provides insights into realistic exp…
View article: Analysis of poor work postures during morning care operations of intensive care unit nurses: a field research
Analysis of poor work postures during morning care operations of intensive care unit nurses: a field research Open
ICU nurses frequently adopt poor working postures during morning care operations. Further research should focus on optimizing safe working postures to prevent or minimise detrimental occupational hazards resulting from poor working posture…
View article: Rule‐based energy management system for autonomous voltage stabilization in standalone DC microgrid
Rule‐based energy management system for autonomous voltage stabilization in standalone DC microgrid Open
This paper presents a rule‐based energy management system (EMS) designed for a standalone DC microgrid incorporating solar photovoltaic (PV), fuel cell, battery energy storage system (BESS), and electric vehicle. The unpredictable nature o…
View article: Improving embedding with contrastive fine-tuning on small datasets with expert-augmented scores
Improving embedding with contrastive fine-tuning on small datasets with expert-augmented scores Open
This paper presents an approach to improve text embedding models through contrastive fine-tuning on small datasets augmented with expert scores. It focuses on enhancing semantic textual similarity tasks and addressing text retrieval proble…
View article: Measuring effects of insulation renewal on heating energy and indoor thermal environment in urban residence of hot-summer/cold-winter region, China
Measuring effects of insulation renewal on heating energy and indoor thermal environment in urban residence of hot-summer/cold-winter region, China Open
Optimizing thermal insulation in residential buildings is crucial for energy efficiency, especially in Hot Summer and Cold Winter (HSCW) region. Current research often neglects retrofitting and real-life measurements, relying instead on si…
View article: Virtual Inertia Control for Power Electronics-Integrated Power Systems: Challenges and Prospects
Virtual Inertia Control for Power Electronics-Integrated Power Systems: Challenges and Prospects Open
In modern power systems, conventional energy production units are being replaced by clean and environmentally friendly renewable energy resources (RESs). Integrating RESs into power systems presents numerous challenges, notably the need fo…
View article: WPT using High Frequency Rotary Transformer for Separately Excited Synchronous Generator
WPT using High Frequency Rotary Transformer for Separately Excited Synchronous Generator Open
This paper proposes a novel high frequency rotary transformer (HFRT) structure for a separately excited synchronous generator (SESG) used in offshore wind turbines. The SESG can eliminate and reduce rare earth permanent magnet (REPM) usage…
View article: Enhanced Online Impedance Estimation of Grid-Connected Inverter Using Hybrid Pseudorandom Binary Sequence
Enhanced Online Impedance Estimation of Grid-Connected Inverter Using Hybrid Pseudorandom Binary Sequence Open
As renewable energy sources increasingly become part of the electrical grid, the need for advanced monitoring and control systems is more pressing than ever. One critical component is the online impedance estimation of grid-connected inver…
View article: Adaptive power-sharing strategy in hybrid AC/DC microgrid for enhancing voltage and frequency regulation
Adaptive power-sharing strategy in hybrid AC/DC microgrid for enhancing voltage and frequency regulation Open
This paper introduces a new adaptive control strategy for power-sharing in a hybrid AC/DC microgrid (HMG). The existing interlink converter (ILC) control methods exhibit limitations under heavy load and contingency conditions. To overcome …
View article: Stability Improvement of Renewable Energy Resource Based Microgrid via Virtual Inertia Control
Stability Improvement of Renewable Energy Resource Based Microgrid via Virtual Inertia Control Open
In an isolated microgrid, in the absence of a rotating synchronous machine, a virtual synchronous generator behaves as a rotating synchronous machine within a converter-based system and mitigates instability issues. This paper presents an …
View article: Smart Electric Vehicle Charging System with Flexible Charging and Voltage Stabilisation Service for Australian Household Network
Smart Electric Vehicle Charging System with Flexible Charging and Voltage Stabilisation Service for Australian Household Network Open
As the number of electric vehicles (EVs) is rapidly increasing, household chargers are attracting more users because of cheaper electricity rates and easier accessibility. This, however, will inevitably increase the power demanded from the…
View article: Optimised online adaptive frequency control of power system with renewable energy penetration
Optimised online adaptive frequency control of power system with renewable energy penetration Open
The emergence of smart grids has introduced new challenges to traditional power system control due to the increasing number of risk factors. This paper presents a parameter tuning strategy using an optimisation algorithm to optimise the we…
View article: Wireless Power Transfer Platform to Re-charging UAVs using Sandwich Coils with Planar Ferrite Cores and Renewable Source
Wireless Power Transfer Platform to Re-charging UAVs using Sandwich Coils with Planar Ferrite Cores and Renewable Source Open
The limitations of UAVs in terms of their endurance or flight time are largely determined by the battery capacity. Because the weight of the battery unit is a significant factor, there is a trade-off between battery capacity and weight. Th…
View article: Design and Implementation of “Fighting and Dream” E-Sports Data Management System
Design and Implementation of “Fighting and Dream” E-Sports Data Management System Open
With the rapid development of modern information technology, an industry named “E-sports” was born. The significance of this project lies in providing convenience for E-sports management through the Spring Boot, Vue.js and Mybatis developm…
View article: Enhancing Microgrid Stability and Energy Management: Techniques, Challenges, and Future Directions
Enhancing Microgrid Stability and Energy Management: Techniques, Challenges, and Future Directions Open
Microgrid technology offers a new practical approach to harnessing the benefits of distributed energy resources in grid-connected and island environments. There are several significant advantages associated with this technology, including …