Work in Progress: Exploring Pedagogical Alternatives for Incorporating Simulations in an Introductory Power Electronics Course
Notice bibliographique
Résumé
In Fall 2018, we developed LabSim, a set of circuit simulators for a power electronics fundamentals course based on a combination of Simulink and PLECS visual blocks.LabSim was developed to provide third-year electrical engineering students with an avenue for independent exploration beyond theory-heavy lectures and strictly controlled labs.The pedagogical approach then was to offer LabSim as a completely voluntary ancillary tool, with no involvement in lab or tutorial assignments, in order to minimize additional workload.While a student survey showed that LabSim accomplished its main goal of bridging the gap between lectures and labs, a common theme in the provided feedback was that students would benefit more from LabSim if it were incorporated more directly into their assignments.In response, we have updated the pedagogical approach in the Fall 2019 offering of the course to involve developing simulationcentred questions in pre-lab preparation assignments, dedicating office hours for simulationrelated questions, developing additional simulators for crucial converter circuits, and providing dedicated simulation workstations on campus.We present this updated pedagogical approach in detail along with an overview of technical updates and examples from the aforementioned assignments.We also present an evaluation of this new approach through an end-of-semester student survey coupled with LabSim usage data collection in assignments where it is optional. Motivation & Introduction to Fundamentals of Electrical Energy Systems (FEES)Electrical engineering students specializing in energy systems are introduced to power electronics in their third year at our university.The introductory course, entitled Fundamentals of Electrical Energy Systems (FEES), covers DC/DC converters, DC/AC converters, three-phase circuits, as well as the basics of transformers and electrical machines.The bulk of the course material, however, is dedicated to switch-mode power conversion.The majority of lectures and tutorials are dedicated to explaining relevant concepts such as switch realization, pulse-width modulation (PWM), harmonics/power quality, and continuous/discontinuous conduction modes.Four out of a total of six laboratory sessions are centred around power electronic circuits.Prior to Fall 2018, student feedback consistently revealed some shortcomings with the pedagogical structure of FEES.The course was rigidly divided into a theoretical portion (lectures + tutorials) and a practical portion (laboratory sessions).The lectures are math heavy and packed with information, while laboratory sessions are strictly controlled due to the safety concerns associated with high-power circuits.Students are expected to follow and understand the theoretical operation of switch-mode circuits in lectures and tutorials, which requires proficiency in many areas of fundamental science and electrical engineering such as circuit theory, electronic devices, signal processing, and complex analysis.The lab sessions, while highly beneficial in
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Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,015 | 0,041 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,001 |
| Méta-épidémiologie (sens large) | 0,001 | 0,001 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,002 | 0,001 |
| Communication savante | 0,009 | 0,007 |
| Science ouverte | 0,004 | 0,006 |
| Intégrité de la recherche | 0,002 | 0,003 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,013 | 0,005 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».