Concept
Convertisseur de couple
Publications associées (40)
Principle and Analysis of Radial-Force-Based Swirling Actuator for Low-Speed High-Torque Applications
This article proposes a swirling actuator that uses the electromagnetic radial force and mechanical gears to generate rotational torque. The proposed actuator generates a rotating radial force between an inner stator and a swirler. The gears on the swirler ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2022Optical rotating torque sensor with nano newton-meter resolution based on a hanging torsion wire
Simon Nessim Henein, Etienne Frédéric Gabriel Thalmann, Billy Nussbaumer
This article presents a novel torque measuring setup working in the nano newton-meter range. The central novelty is a long (1 meter range) thin (diameter of a few tens of micrometers) metallic wire used instead of the relatively stiff torsion zone of the s ...
2021Pushing the Limits of Efficiency and Power Density in High-Frequency Power Conversion Based on Wide-Band-Gap Technologies
The emergence of wide-band-gap (WBG) power transistors with low conduction losses and high-speed switching speeds has paved the way for more-than-ever efficient power electronics systems and huge energy saving potentials. Likewise, power density- the ratio ...
EPFL202197.4%-Efficient All-GaN Dual-Active-Bridge Converter with High Step-up High-Frequency Matrix Transformer
Elison de Nazareth Matioli, Armin Jafari, Palliyage Srilak Nirmana Perera
In this work, we demonstrate a state-of-the-art high step-up/down dual-active-bridge (DAB) converter designed with GaN transistors, to achieve a high efficiency and large power-density. A quasi-planar matrix transformer with high step-up/down ratio is demo ...
2020Automatically Starting and Secured Detent Escapement for a Timepiece
Simon Nessim Henein, Ilan Vardi
A horological detent escapement for a horological movement arranged to transmit a torque from said horological movement to an oscillating regulating organ of said horological movement, the regulating organ comprising a first mobile body and the escapement ...
2019Unsteady Flow Numerical Simulations on Internal Energy Dissipation for a Low-Head Centrifugal Pump at Part-Load Operating Conditions
François Avellan, Xiaoran Zhao
Dredge pumps are usually operated at part-load conditions, in which the low-solidity centrifugal impeller could experience large internal energy dissipation, related to flow separation and vortices. In this study, SST k- and SAS-SST turbulence models were ...
2019Automatic Couplings with Mechanical Overload Protection for Modular Robots
Jamie Paik, Christoph Heinrich Belke
This paper presents an automatic coupling mechanism with mechanical overload protection for use in modular robotic systems. The genderless coupling incorporates a novel safety mechanism that disengages two modules at a pre-defined torque threshold. Several ...
2019An Energy Efficient Power Converter for Zero Power Wearable Devices
Early diagnosis of Alzheimer's and epilepsy requires monitoring a subject's development of symptoms through electroencephalography (EEG) signals over long periods. Wearable devices enable convenient monitoring of biosignals, unlike complex and costly hospi ...
EPFL2018Fluid-structure interaction mechanisms leading to dangerous power swings in Francis turbines at full load
François Avellan, Arthur Tristan Favrel, Christian Landry
Hydropower plants play an important regulatory role in the large scale integration of volatile renewable energy sources into the existing power grid. This duty however requires a continuous extension of their operating range, provoking the emergence of com ...
Elsevier2017Analytical Models of Multiphase Isolated Medium-Frequency DC-DC Converters
Alfred Rufer, Asier Garcia Bediaga, Irma Villar, Alejandro Rujas
This paper presents new analytical equations, parametrized with respect to the number of converter phases, for multiphase isolated dc-dc topologies. This paper describes five multiphase isolated converter models, as well as their level of accuracy. Based o ...
Ieee-Inst Electrical Electronics Engineers Inc2017