⚡ electrical engineering

No-load field characterisation of a sine-wave-filtered variable-frequency drive feeding an electrical submersible induction motor through a 6000 m cable

This paper presents full-scale field measurements on a 45 kW submersible induction motor fed through a 6000 m cable, demonstrating that while a sine-wave filter effectively cleans PWM voltage, the long cable significantly reduces terminal voltage and induces magnetic de-saturation that lowers no-load current, highlighting critical design considerations for deep-well variable-frequency drive systems.

Hua Zhang, Guihong Tao, Heng Zhang, Lei Wang2026-06-30
⚡ electrical engineering

ESG-4D Valuation with Modern Parametric Formulas: A Quantitative Model for Integrating Environmental, Social and Governance Criteria into Construction Project Valuation in Peru

This study introduces and validates the ESG-4D model, a quantitative framework that integrates Environmental, Social, and Governance criteria directly into parametric construction cost formulas within Peru's regulatory context, demonstrating that this approach reduces financial uncertainty by 12–18% and optimizes decision-making compared to traditional valuation methods.

PAUL RICARDO PRUDENCIO GALVEZ2026-06-30
⚡ electrical engineering

From Linear Waste to Closed-Loop Value: A Digital Twin-Enabled Parametric Cost Architecture for Circular Construction in Peru

This study proposes a digital twin-enabled parametric cost architecture that integrates circular economy principles to quantify potential waste valorization and lifecycle cost reductions for Peru's construction sector, while emphasizing that its simulated projections require field validation before regulatory or investment application.

PAUL RICARDO PRUDENCIO GALVEZ2026-06-30
⚡ electrical engineering

Evidence-Weighted Mission Suitability Assessment of Water-Based Small-Spacecraft Propulsion Architectures

This paper introduces the Evidence-Weighted Mission Suitability Index (EW-MASI) to evaluate and rank various water-based propulsion architectures for small spacecraft, concluding that electrothermal resistojets are the most suitable near-term option for conservative maneuvers while other water-based systems offer specific advantages for impulsive, long-duration, or deep-space missions.

Anik Chawdhury2026-06-30
⚡ electrical engineering

Experimental Investigation of the Low-Velocity Impact Behavior of Cellular Sandwich Composites Reinforced with Waste Rubber and Travertine Fillers

This study demonstrates that incorporating waste rubber and travertine fillers into parametrically redesigned cellular sandwich composites significantly enhances their low-velocity impact resistance and energy absorption, offering a sustainable path toward high-performance structural optimization.

Çiğdem ERSAN, Yasin SELEK2026-06-30
⚡ electrical engineering

RL-Based Delay Minimization for Computation Offloading in IRS- and RHS-Enhanced MEC Systems

This paper proposes a Deep Deterministic Policy Gradient (DDPG)-based reinforcement learning framework to jointly optimize IRS phase shifts, RHS antenna amplitudes, and task offloading decisions in an IRS- and RHS-enhanced mobile edge computing system, thereby significantly minimizing overall task execution delay compared to conventional approaches.

Zahra Amiri, Mohsen Eslami, Ebrahim Nikmaleki2026-06-30
⚡ electrical engineering

Mechanical Strength of Roller-Compacted Concrete Mechanical Strength with Zeolite, Microsilica, and Polypropylene Fibers

This study demonstrates that incorporating 10% natural zeolite, 4% microsilica, and 0.12% polypropylene fibers synergistically enhances the mechanical strength and durability of roller-compacted concrete through matrix densification and crack-bridging mechanisms, offering a sustainable solution for infrastructure applications.

Amir Reza Javaherforoush, Hamid Beiraghi2026-06-30
⚡ electrical engineering

Active Steering of Material Flow in Large-Scale Bellows Roll Forming via Spatially Modulated Die Friction

This paper proposes and validates a novel hybrid laser surface texturing strategy that spatially modulates die friction to actively steer material flow from the root to the crest, thereby significantly reducing wall thinning and improving structural integrity in large-scale bellows roll forming.

Hao Fu, Jialin Qu, Hangcheng Zhang, Tianyu Shan, Shuqian Wu, Jingjing Zhang, Hexing Li, Yuyang He, Yanhu Zhang, Jinghu J (…)2026-06-30