Concept

Vélo électrique

Publications associées (34)

Modelling and Sensors for Magnetically-Levitated Disc Drives

The development of new industrial applications has diverted the focus of research towards compacter and faster rotatory drives. These requirements push the classical ball-bearings of electric motors to the limits in terms of operational lifetime and fricti ...

EPFL2022

Topology Optimization For Winding in Electric Motors

Pierre Chassagne

Electrical machines consumed the amount of 9’346 TWh in 2019, corresponding to more than 40% of the total global electricity consumption. With the growing demand for automation of production lines and electrification of the transport industry, this value i ...

2022

Efficiency Optimisation of Slotless Magnetic Bearing Machines

Yves Perriard, Douglas Martins Araujo, Leopoldo Rossini, Guzmán Borque Gallego

Efficiency is one of the key performance indexes in the design of electric motors. When considering fully active magnetic bearing machines, this aspect gain further relevance due to the necessity of actively controlling all the remaining degrees of freedom ...

2021

The Perception of Access in Sydney

Ensuring good access is a key element of land-use planning, allowing people to move around and access different services. This project focuses on the perception of access, as people base their transport mode choice on it. The context of lockdown due to COV ...

2020

Partial Discharge Localization Using Time Reversal: Application to Power Transformers

Marcos Rubinstein, Mohammad Azadifar, Amirhossein Mostajabi, Hamidreza Karami

In this work, we present a novel technique to locate partial discharge (PD) sources based on the concept of time reversal. The localization of the PD sources is of interest for numerous applications, including the monitoring of power transformers, Gas Insu ...

2020

Design of Compact Bearingless Disc Drive Systems

Yves Perriard, Douglas Martins Araujo, Juan Patricio Tomás Peralta Fierro

Inflating costs and emerging applications are spawning interests toward smaller and faster electric drives. The challenges of miniaturization make magnetic bearings more appealing, as they provide intrinsic high-speed capability and need virtually zero-mai ...

2020

Dynamic optimization of bicycle-sharing systems

Mohamed Detsouli

Bicycle-sharing systems stations are often imbalanced. Stations are said to be in excess when there is no empty dock for users willing to deposit their bicycle. Conversely, stations aresaidtobeinshortagewhenthereisnoavailablebicycle. Rebalancingcanbeachiev ...

2020

Demand forecasting for a novel transportation mode

Denis Aloyse Joseph Steffen

The vehicle sharing systems (VSSs) are becoming more and more popular due to both economic and environmental effects. However, these systems mainly focus on two specific types of vehicles: bicycles and cars. Recently, some other types of vehicles (e.g. lig ...

2019

Programmable Fluidic Networks Design for Robotic Origami Sequential Self-Folding

Jamie Paik, Mustafa Mete, Zhenishbek Zhakypov, Julien Fiorentino

Self-folding enables compact, deployable and reconfigurable structures for close and far remote applications. As the degree-of-freedom in achieving folded shapes is dictated by the number of actuators, distributed on a quasi-2-D lattice, their design remai ...

2019

Material and Energy Flow Analysis and Associated Environmental Impacts of Swiss Mobility

Cecilia Matasci

The development of material flow analysis (MFA) on large-scale systems is challenging due to the complexity and breadth of data that are required and the magnitude of the mass flows involved. This is true, for example, when trying to determine the material ...

Paul Scherrer Institute, World Resources Forum2019

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