Publications by Jean-Jacques Simond

Two Full Parameter Identification Methods for Synchronous Machine Applying DC-Decay Tests for a Rotor in Arbitrary Position

Jean-Jacques Simond, Mai Tu Xuan, Frédéric Michael Maurer

The main obstacle to a wide use of dc-Decay tests lies in the necessity to align the rotor with the d- or q-axis, which is very difficult to perform for high-power units. The goal of this paper is to propose and validate standstill dc-Decay measuring metho ...

Ieee-Inst Electrical Electronics Engineers Inc2017

Two Novel Methods for Parameter Identification of Synchronous Machine Using DC-Decay Test with Rotor in Arbitrary Position

Jean-Jacques Simond, Mai Tu Xuan, Frédéric Michael Maurer

The goal of this paper is to propose and validate standstill DC-Decay measuring methods for a rotor in arbitrary position. The first new method (DC-Decay I) delivers the equivalent circuit with a few measurements. The second new method (DC-Decay III) permi ...

IEEE2016

Eigenvalues Analysis Applied to the Stability Study of a Variable Speed Pump Turbine Unit

Basile Kawkabani, Jean-Jacques Simond

This paper presents an eigenvalues analysis method for an induction machine model based on phase variables a, b, c. This approach is validated by comparison with ad, q approach and applied to a variable speed pump-turbine unit using a simplified model of t ...

2012

Optimization of the Start-up Time of a Variable Speed Pump-Turbine Unit in Pumping Mode

Basile Kawkabani, Jean-Jacques Simond, Christophe Nicolet, Yves Pannatier

This paper presents the start-up and synchronization procedures of large variable- speed pump-turbine units in pumping mode. These procedures applied to a doubly-fed induction motor-generator with three-level voltage source inverters VSI cascade in the rot ...

2012

Finite Element Model of Electrical Machines Coupled to the Grid Simulation Software

Jean-Jacques Simond, Mai Tu Xuan, Gilles Rosselet

Using a finite element (FE) model of the electrical machine in a grid solver enables us to take the machine nonlinearities into account with great precision in the simulation of a complete system. Three methods are usually used for linking the grid and FE ...

2011

Stability study of a mixed islanded power network

François Avellan, Basile Kawkabani, Alexander Schwery, Jean-Jacques Simond

This paper presents the modeling, simulation and analysis of the dynamic behavior of a mixed power network of 2.78 GW including hydro, thermal and wind power plants. The modeling of each power plant is described. The set of parameters of the turbine speed ...

2010

Dynamical behaviour comparison between variable speed and synchronous machines with PSS

François Avellan, Basile Kawkabani, Alexander Schwery, Jean-Jacques Simond

2010

Investigation of control strategies for variable speed pump-turbine units by using a simplified model of the converters

Basile Kawkabani, Alexander Schwery, Jean-Jacques Simond, Philippe Allenbach, Yves Pannatier

Institute of Electrical and Electronics Engineers2010

Influence of the Francis turbine location under vortex rope excitation on the hydraulic system stability

François Avellan, Basile Kawkabani, Jean-Jacques Simond, Philippe Allenbach, Christophe Nicolet, Sébastien Alligné

Hydroelectric power plants are known for their ability to cover variations of the consumption in electrical power networks. In order to follow this changing demand, hydraulic machines are subject to off-design operation. In that case, the swirling flow lea ...

2009

Transient Dynamics of Long Stator Linear Motors

Basile Kawkabani, Yves Perriard, Jean-Jacques Simond, Christophe Espanet

2009

Unstable Operation of Francis Pump-Turbine at runaway: Rigid and Elastic Water Column Oscillation Modes

François Avellan, Basile Kawkabani, Jean-Jacques Simond, Sébastien Alligné

This paper presents a numerical simulation study of the transient behavior of a 2x340MW pump-turbine power plant, where the results show an unstable behavior at runaway. First, the modeling of hydraulic components based on equivalent schemes is presented. ...

2009

Benefits of Variable Speed Pumped storage Units in Mixed Islanded Power Network during Transient Operation

François Avellan, Basile Kawkabani, Alexander Schwery, Jean-Jacques Simond, Yves Pannatier

2009

Influence of the vortex rope location of a Francis Turbine on the hydraulic system stability

François Avellan, Basile Kawkabani, Jean-Jacques Simond, Philippe Allenbach, Christophe Nicolet, Sébastien Alligné

Hydroelectric power plants are known for their ability to cover variations of the consumption in electrical power networks. In order to follow this changing demand, hydraulic machines are subject to off-design operation. In that case, the swirling flow lea ...

International Association For Hydraulic Research2008

A New Inductive Air-Gap Monitoring System for Large Low Speed Hydro-Generators, Tests in Operation

Jean-Jacques Simond, Mai Tu Xuan, Roland Wetter

2008

Power Supply of Long stator Linear Motors – Application to Multi Mobile System

Basile Kawkabani, Yves Perriard, Jean-Jacques Simond

In large cities, due to expensive land price, high-rise buildings are built, in which the space dedicated to the elevators is considerable and reduces the rented surfaces. To decrease these lost surfaces, a multi mobile system is proposed. It consists of s ...

2008

Modeling and Transient Simulation of FACTS in Multi-Machine Power Systems

Basile Kawkabani, Jean-Jacques Simond, Yves Pannatier

The present paper describes the modeling of 3-level Unified Power Flow Controllers (UPFC) with their control systems for studying the steady-state and transient behavior of electrical networks equipped with FACTS devices. The control features of these devi ...

2008

An innovative Inductive Air-Gap Monitoring System for Large Low Speed Hydro-Generators

Jean-Jacques Simond, Mai Tu Xuan, Roland Wetter

Large low speed hydro-generators (Fig. 1) have a very small specific air-gap to stator bore diameter ratio making it virtually impossible to have a perfect centering of the rotor within the stator during the assembly process. Therefore the machines are ope ...

2008

On the Damper-Bar Current Calculation For High Power Salient Poles Synchronous Machines

Basile Kawkabani, Jean-Jacques Simond, György Atilla Bànyai

The goal of the paper was to analyze the current distribution of a high-power salient-pole synchronous machine damper winding. A few methods were considered but only two analytical methods are highlighted. Both methods arc based on parameter calculation by ...

2008

Benchmark Test of a Variable Speed Unit for Teaching Purposes

André Hodder, Basile Kawkabani, Jean-Jacques Simond, Sylvain Robert

Variable speed pump-turbine units have become nowadays an interesting way to increase stability of electrical power networks due to their high level of operating flexibility. Different advantages offered by variable speed pump-turbine units for both pumpin ...

2008

Double trouble

André Hodder, Alexander Schwery, Jean-Jacques Simond

This article presents the modeling, simulation, and practical application of a double-fed asynchronous motor-generator for pumped-storage plants equipped with a three-level VSI cascade. The problem of DC unbalance control is studied in this particular appl ...

2008