Publications by Marcel Jufer | EPFL Graph Search

Electric Drive System for Automatic Guided Vehicles Using Contact-free Energy Transmission

Four technologies, combining mainly innovative solutions, offer the possibility of clean and flexible vehicles, all using only electricity. The main common components are contact-free energy transmission, storage on super-capacitors, holonome axles integra ...

2008

Analytical Force Determination in an Electromagnetic Actuator

Marcel Jufer, Yves Perriard, Miroslav Markovic

We present an original analytical determination of the force acting on the moving coil in an electromagnetic actuator. The actuator magnetic field is solved analytically by Schwarz-Christoffel (SC) mapping. The SC integral is solved analytically using the ...

Institute of Electrical and Electronics Engineers2008

Electric Drive System for Automatic Guided Vehicles Using Contact-free Energy Transmission

Marcel Jufer

Four technologies, combining mainly innovative solutions, offer the possibility of clean and flexible vehicles, all using only electricity. The main common components are contact-free energy transmission, storage on super-capacitors, holonome axles integra ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2008

Global modelisation of the Swissmetro maglev using a numerical platform

Marcel Jufer, Mark Sawley

2006

A square magnetic circuit analysis using Schwarz-Christoffel mapping

Marcel Jufer, Yves Perriard, Miroslav Markovic

The paper presents an original method to determine the 2D magnetic field in a square magnetic circuit. To do it, the method of Schwarz-Christoffel mapping is used. This mapping is a special kind of the conformal mappings, applicable to polygonal 2D configu ...

2006

Passive Guidance Forces of Polarized Linear Motors Combined with Levitation Actuators Working in Partial Vacuum – Application to Swissmetro

Marcel Jufer, Christophe Espanet

Maglev (>400 km/h) refer to Maglev such as the Japanese JR-Maglev MLX, the German Transrapid and the USA Inductrack. The Swissmetro Project, presenting a unique aspect of Maglev, is designed to work under partial vacuum (

2006

Polarized Linear Motor Combined With Levitation Actuators Working in a Partial Vacuum Environment — Application to Swissmetro

Marcel Jufer, Pascal Hagmann, Christophe Espanet

Worldwide high speed Maglev (> 400km/h) developments refer to Maglev such as the Japanese JR-Maglev MLX, the German Transrapid and the USA Inductrack Maglev. Other world projects exist such as the Japan HSST (< 300km/h) and the China HTC. The JR-Maglev, th ...

2006

An exact formula for "tooth-to-tooth" permeance

Marcel Jufer, Yves Perriard, Miroslav Markovic

We present a new, completely original exact method to determine the permeance between two opposing iron teeth. This configuration is important because it is often encountered in electrical machines and apparatus. The method is based on conformal mapping. T ...

Institute of Electrical and Electronics Engineers2005

Determination of tooth cogging force in a hard-disk brushless DC motor

Marcel Jufer, Yves Perriard, Miroslav Markovic

The paper proposes a new method to determine the tooth cogging force in a brushless DC (BLDC) motor which is used in a hard-disk application. This force might be a source of tooth vibrations and motor noise. In the new method, the permanent-magnet (PM) pol ...

Institute of Electrical and Electronics Engineers2005

SWISSMETRO - Polarized Linear Motor Combined With Levitation Actuators

Marcel Jufer, Patric Hagmann, Christophe Espanet

SWISSMETRO is a MAGLEV Project, designed for a speed up to 500 km/h in two tunnels under partial vacuum. The authors investigate new possibilities to combine the propulsion and levitation. Polarized inductors for the levitation are studied, implying a pola ...

2005

MAGLEV Projects Technology Aspects and Choices

Marcel Jufer

This paper presents technology aspects and choices relative to worldwide MAGLEV projects such as the German Transrapid, the Japanese MLX, the USA Inductrack and the Swissmetro. Propulsion, magnetic levitation and guidance, transfer of energy to the vehicle ...

IEEE Institute of Electrical and Electronics Engineers2002