Person
Mai Tu Xuan
This person is no longer with EPFL
Related publications (20)
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 Inc2017Two 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 ...
IEEE2016Finite 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 ...
2011An 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 ...
2008A Numerical Test Platform for Large Synchronous Machines also useful as a Design Optimization Tool.
Jean-Jacques Simond, Mai Tu Xuan
This paper deals with the determination of large synchronous machine characteristic quantities using an extended 2D-finite element method and based on the knowledge of the geometry and of the physical properties of the electrical and magnetic circuits of t ...
2006Computation 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 finite-element (FE) method for computation 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 ...
2006On the Identification of the Synchronous Machine Parameters Using Standstill DC Decay Test.
Jean-Jacques Simond, Mai Tu Xuan, Roland Wetter
This paper presents a refined approach to obtain the parameters of synchronous machine equivalent circuits from standstill DC decay tests. A dedicated program for the time- constants and reactances identification was developed and applied for both d- and q ...
2006A Novel Air-Gap Monitoring System For Large Low Speed Hydro-Generators.
Jean-Jacques Simond, Mai Tu Xuan, Roland Wetter, Stefan Keller
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 ...
200612-Pulse LCI Synchronous Drive for a 20 MW Compressor - Modeling, Simulation and Measurements.
Jean-Jacques Simond, Mai Tu Xuan, Roland Wetter, Alain Sapin
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 ...
2005Prediction 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