Centro Nacional de Investigación y Desarrollo Tecnológico

Symmetry-Based Simulation of a Dual Inverter Under Different Load Conditions

This paper presents a symmetry-based analysis applied to a dual-inverter system that powers different types of loads. The configuration consists of two three-phase inverters controlled using carrier-based space-vector pulse-width modulation (CBSV-PWM). The study investigates how...

A Data-Driven Validation Methodology for a Multi-City Solar Chimney Dataset in Smart-City Applications

This article presents a methodology for a validated multi-city parametric dataset for data-driven assessment of single-channel solar chimneys as energy-efficient components of smart-city buildings. The dataset covers Mexico City, Hermosillo, Mérida, Monterrey, Toluca, and Villahe...

Online algebraic identification–based trial-weight-free modal balancing of asymmetric rotor–bearing systems

Asymmetric rotor–bearing systems exhibit parametric excitation and complex vibration behavior due to unequal stiffness along their principal axes, which significantly complicates conventional balancing procedures. Most existing methodologies require trial weights and multiple rot...

Non-Destructive Classification of Ataulfo Mango Ripeness Using Color Images and Machine Learning

Automatic classification of Ataulfo mango (Mangifera indica L.) ripeness is essential to ensure consistent quality, standardize post-harvest processes, and reduce the subjectivity of traditional visual inspection, which is unreliable and error-prone. This paper aims to develop a...