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Jean-Jacques Simond

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Related publications (59)

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Benchmark Test of a Variable Speed Unit for Teaching Purposes

Jean-Jacques Simond, Basile Kawkabani, André Hodder, 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

Modeling of Multi-Windings Phase Shifting Transformers for DC Supplies

Jean-Jacques Simond, Philippe Allenbach, Alain Sapin

This paper deals with the modeling of multi-windings transformers. Based on a real example, a modeling methodology is presented. This methodology is the original part of the paper. Application examples of multi-windings phase shifting transformers (18 and ...

2000

Unbalanced DC-link voltage regulation in a back-to-back 3-level PWM converter for a doubly-fed induction motor/generator

Jean-Jacques Simond, André Hodder, Alexander Schwery

An unbalanced DC-link voltage regulation strategy is proposed for a three-level voltage source inverter used in the rotor cascade of a double-fed asynchronous motor-generator. The major problem in determining the presence of the unbalanced component is inv ...

2005

Improved Modeling of Three-Phase Transformer Analysis Based on Magnetic Equivalent Circuit Diagrams And Taking Into Account Nonlinear B-H Curve

Jean-Jacques Simond, Basile Kawkabani

The present paper deals with a new approach for the study of the steady-state and transient behaviour of phase transformers. This approach based on magnetic equivalent circuit diagrams, takes into account the nonlinear B-H curves as well as zero-sequence f ...

2006

Modeling, Simulation, and Test of a Three-Level Voltage-Source Inverter With Output LC Filter and Direct Torque Control

Jean-Jacques Simond, Alain Sapin

This paper presents the modeling, detailed simulation, and test of an efficient medium-voltage adjustable-speed drive. The system consists of a three-level neutral-point-clamped inverter supplied by a 12-pulse rectifier. To achieve a motor-friendly supply, ...

2007

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

Jean-Jacques Simond, Basile Kawkabani, 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

Prediction of the No-Load Voltage Waveform of Laminated Salient-Pole Synchronous Generators

Jean-Jacques Simond, Mai Tu Xuan, Stefan Keller

This paper presents a combined analytical and FEM method for prediction of the no-load voltage waveform of laminated salient-pole synchronous generators. The described method takes into account saturation effects as well as the damper bar currents due to t ...

2005

Synchronous machines parameters determination using finite elements method

Jean-Jacques Simond, Mai Tu Xuan

The paper deals with the determination of synchronous machine parameters using a 2D Finite Element Method – FEM (Flux2D- Cedrat). Simulations of no-load sudden three phase short- circuits are performed in rotation, the saturation effects and the eddy curre ...

2000

A Novel Air-Gap Monitoring System For Large Low Speed Hydro-Generators

Jean-Jacques Simond, Mai Tu Xuan, Stefan Keller, Roland Wetter

This paper describes a novel and patented air-gap monitoring system for large low speed synchronous hydro-generators. This new system is based on inductive sensors, it is able to measure in real time a static or a dynamic rotor eccentricity, a stator or a ...

2006

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

Jean-Jacques Simond, Basile Kawkabani, 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

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

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

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

Jean-Jacques Simond, Christophe Nicolet, Basile Kawkabani, 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

12-Pulse LCI Synchronous Drive for a 20 MW Compressor - Modeling, Simulation and Measurements

Jean-Jacques Simond, Mai Tu Xuan, Alain Sapin, Roland Wetter

The current source thyristor inverter is still today a suitable choice for supplying high power adjustable speed drives for pumps or compressors. This paper presents a 12-pulse LCI (load commutated inverter) synchronous drive for a 20 MW compressor, it foc ...

2005

On the Hydroelectric Stability of an Islanded Power Network

François Avellan, Jean-Jacques Simond, Philippe Allenbach

slanded power networks comprising a small number of large power plants are subject to perturbations leading to important transients, and, hence need high performance governors. The design of these governors requires a detailed model of the system. This is ...

2006

Doubly-Fed Asynchronous Machine with 3-Level VSI cascade for Variable Speed Pump Storage

Jean-Jacques Simond, André Hodder, Alain Sapin

This paper deals with a fixed-frequency variable-speed motor/generator with 3-level VSI (Voltage Source Inverter) cascade. The 3-level VSI is applied to a DASM (Doubly-fed ASynchronous Machine) for large pump storage plants. The extension to 3 levels is th ...

2000

Transient Behavior of Variable Speed Pump-Turbine Units

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

2008

Stability study of a mixed islanded power network

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

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

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