Inventions, Vol. 9, Pages 45: A Novel Hybrid Ultrasound Abrasive-Driven Electrochemical Surface Finishing Technique for Additively Manufactured Ti6Al4V Parts Inventions doi: 10.3390/inventions9020045 Authors: Manyou Sun Ehsan Toyserkani Poor surface quality is one of the drawbacks of metal parts made by additive manufacturing (AM)—they normally possess relatively high surface roughness and different types of surface irregularities. Post-processing operations are usually needed to reduce the surface roughness to have ready-to-use parts. Among all the surface treatment techniques ..read more

Inventions, Vol. 9, Pages 44: A Modified Reduced-Order Generalized Integrator–Frequency-Locked Loop-Based Sensorless Vector Control Scheme Including the Maximum Power Point Tracking Algorithm for Grid-Connected Squirrel-Cage Induction Generator Wind Turbine Systems Inventions doi: 10.3390/inventions9020044 Authors: Tuynh Van Pham Anh Tan Nguyen In this paper, an improved speed sensorless control method including the maximum power point tracking (MPPT) algorithm for grid-connected squirrel-cage induction generator (SCIG) wind turbine systems using modified reduced-order generalized in ..read more

Inventions, Vol. 9, Pages 43: From Sensing Technology towards Digital Twin in Applications Inventions doi: 10.3390/inventions9020043 Authors: Jianxiong Zhu Bairong Sun Luyu Jia Haibing Hu Sensing technology drives innovation in digital technology, especially in data acquisition ..read more

Inventions, Vol. 9, Pages 42: Enhanced Heat Transfer in Thermoelectric Generator Heat Exchanger for Sustainable Cold Chain Logistics: Entropy and Exergy Analysis Inventions doi: 10.3390/inventions9020042 Authors: Yunchi Fu Yanzhe Li This study investigates the application of thermoelectric power generation devices in conjunction with cold chain logistics transport vehicles, focusing on their efficiency and performance. Our experimental results highlight the impact of thermoelectric module characteristics, such as thermal conductivity and the filling thickness of copper foam, on the energy util ..read more

Inventions, Vol. 9, Pages 40: Design, Construction and Programming of a Low-Cost Pulsed High-Voltage Direct Current Power Supply for the Electrophoretic Deposition of Silicon Carbide Mixed with Graphite and/or Alumina for Thermoelectric Applications Inventions doi: 10.3390/inventions9020040 Authors: Juan Jesús Reyes Valdez Edna Carina De la Cruz Terrazas Eugenio Rodríguez González This document describes a proprietary design, construction, programming and testing of a low-cost pulsed high-voltage direct current (HVDC) power supply with an output of 430 V and power of 25 W. The design obtained ..read more

Inventions, Vol. 9, Pages 41: The Expected Dynamics for the Extreme Wind and Wave Conditions at the Mouths of the Danube River in Connection with the Navigation Hazards Inventions doi: 10.3390/inventions9020041 Authors: Alina Beatrice Răileanu Liliana Rusu Andra Marcu Eugen Rusu The entrance in the Sulina channel in the Black Sea is the target area of this study. This represents the southern gate of the seventh Pan-European transport corridor, and it is usually subjected to high navigation traffic. The main objective of the work is to provide a more comprehensive picture concerning the past an ..read more

Inventions, Vol. 9, Pages 39: Innovative Hybrid UAV Design, Development, and Manufacture for Forest Preservation and Acoustic Surveillance Inventions doi: 10.3390/inventions9020039 Authors: Gabriel Petre Badea Tiberius Florian Frigioescu Madalin Dombrovschi Grigore Cican Marius Dima Victoras Anghel Daniel Eugeniu Crunteanu The research described in this paper focuses on the development of an innovative unmanned aerial vehicle (UAV) tailored for a specific mission: detecting the acoustic signature emitted by chainsaws, identifying deforestation, and reporting its location for legality assessmen ..read more

Inventions, Vol. 9, Pages 38: The Basic k-ϵ Model and a New Model Based on General Statistical Descriptions of Anisotropic Inhomogeneous Turbulence Compared with DNS of Channel Flow at High Reynolds Number Inventions doi: 10.3390/inventions9020038 Authors: J. J. H. Brouwers Predictions are presented of mean values of statistical variables of large-scale turbulent flow of the widely used basic k-ϵ model, and of a new model, which is based on general statistical descriptions of turbulence. The predictions are verified against published results of direct numerical simulati ..read more

Inventions, Vol. 9, Pages 37: Modeling and Experimental Validation of Broad Input-Output Range Three-Voltage-Level Rectifier Inventions doi: 10.3390/inventions9020037 Authors: Yarden Oren Eliav Dahan Aaron Shmaryahu Yishai Kellerman Moshe Sitbon Shlomo Yaakov Gadelovits Dmitry Baimel Ilan Aharon A new type of single–conversion–step wide–input–range versatile step–up/down three–voltage–level power–factor correction stage is presented in this manuscript. The rectifier can operate both ..read more

Inventions, Vol. 9, Pages 36: Characterization of Pig Vertebrae under Axial Compression Integrating Radiomic Techniques and Finite Element Analysis Inventions doi: 10.3390/inventions9020036 Authors: Cristian A. Hernández-Salazar Camilo E. Chamorro Octavio A. González-Estrada The study of pig bones, due to their similarity with human tissues, has facilitated the development of technological tools that help in the diagnosis of diseases and injuries affecting the skeletal system. Radiomic techniques involving medical image segmentation, along with finite element analysis, enable the detailed stud ..read more