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Yves Perriard

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Publications associées (302)

A New Electrically Assist Scooter

André Hodder, Yves Perriard

2008

Design Procedure for a Very High Speed Slotless Permanent Magnet Motor

Yves Perriard, Pierre-Daniel Pfister

The paper presents a very high speed slotless permanent magnet motor design procedure using an analytical model. The multiphysics analytical model allows a quick optimization process using a sequential quadratic programming method. The presented model incl ...

2008

Genetic Algorithm Optimization for a Surgical Ultrasonic Transducer

Yves Perriard, Daniel Porto

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

Analytical Modelling of a BLDC Drive with 120°/180° Block Commutation

André Hodder, Yves Perriard

2008

Dynamic of Passive Guidance Forces of Polarized Linear Motors - Application to Swissmetro MAGLEV

Yves Perriard, Christophe Espanet

2007

A New Standstill Position Detection Technique for Nonsalient Permanent-Magnet Synchronous Motors Using the Magnetic Anisotropy Method

Yves Perriard, Jan Persson, Miroslav Markovic

This paper describes a new method to estimate the standstill position of permanent-magnet synchronous motors (PMSMs). The method is based on the anisotropic properties of permanent magnets and is therefore referred to as a magnetic anisotropy method (MAM). ...

Institute of Electrical and Electronics Engineers2007

An analytical formula for the back emf of a slotted BLDC motor

Yves Perriard, Miroslav Markovic

The paper presents a completely analytical formula to determine the phase back emf of a slotted BLDC motor with interior or exterior rotor and parallel or radial permanent magnet (PM) magnetization and concentrated winding. The formula is based on integrat ...

2007

An analytical determination of eddy-current losses in a configuration with a rotating permanent magnet

Yves Perriard, Miroslav Markovic

The paper presents a completely analytical method for determining the eddy currents in a cylindrical configuration. The configuration consists of a cylindrical permanent magnet rotating inside a conducting hollow cylinder (stator). The solution is obtained ...

Institute of Electrical and Electronics Engineers2007

Analysis and modeling of electrostatic discharge in a tactile glass featured watch

Paolo Germano, Yves Perriard, Lionel Paratte, Daniele Demarco

Electrostatic discharge in quartz watches is becoming more and more important due to the use of plastic materials and tactile sensors. The discharge can lead to different type of dysfunction such as a simple reset, a latch-up, or the destruction of the ele ...

2007

Optimization of a Single Phase Ultrasonic Linear Motor

Yves Perriard, José Fernandez Lopez, Markus Flückiger

Piezoelectric ultrasonic motors are superior to electromagnetic micromotors, because their efficiency remains theoretically constant during miniaturization. However, the still relatively recent technology has a considerable unexploited optimization potenti ...

2007

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

Sensorless Speed Control of Traveling Wave Ultrasonic Motor

Yves Perriard, Matteo Bullo, Markus Flückiger

Ultrasonic motors are a good alternative to electromagnetic motors in medical robotics, since they are electromagnetically compatible. Estimating speed instead of using encoders reduces cost and dimension of the robot on the one hand and increases reliabil ...

2006

Optimization of Electric Motor for a Solar Airplane Application

Yves Perriard, Patrick Ragot, Miroslav Markovic

This paper presents a method to model and optimize brushless dc motor for a solar airplane. In order to obtain the optimal solution for the given specifications, all free parameters are analyzed globally in one go. For this, the commercial optimization sof ...

2006

Simplified Design Methodology for a Slotless Brushless DC Motor

Yves Perriard, Miroslav Markovic

The paper presents a simplified analytical method to design a small two-pole slotless brushless dc motor. Using only a few approximations, the motor analytical model is formulated to generate a system of equations. The system can be solved analytically, pr ...

Institute of Electrical and Electronics Engineers2006

Multiphysical Brushless DC Motor Optimization Process

Yves Perriard, Miroslav Markovic

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

2006

Analyse et optimisation d´un système d´entraînement pour avion solaire

Yves Perriard, Patrick Ragot, Miroslav Markovic

2006

Sensitivity Analysis and Optimization of a Standing Wave Ultrasonic Linear Motor

Yves Perriard, José Fernandez Lopez

This paper presents the sensitivity analysis of an ultrasonic linear motor using design of experiments (DOE) and the finite element (FE) optimization of its deformation amplitude. A first ultrasonic linear motor prototype has been built at the laboratory. ...

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

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