EPE Journal, "European Power Electronics and Drives", Volume 15, N° 2, 2005.
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Titre : EPE Journal, European Power Electronics and Drives, Volume 15, N° 2, 2005.

Cité dans : [DIV322]  Les revues EPE Journal et EPE Newsletter, février 2011.
Volume : 15
Numero : 2
Date : 2005
Site_web : http://www.epe-association.org/epe/main.htm
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epe15-02.jpg - 19 Ko

EPE Journal Volume 15-2 - Editorial
Invitation to EPE 2005 in Dresden (Germany) [Details]
By Dr. L. Lorenz
Editorial of EPE Journal Volume 15-2 - Invitation to EPE 2005 in Dresden

EPE Journal Volume 15-2 - Papers
Design and Dynamic Performance of Modified Series-Parralel Resonant
Converter [Details]
By H. M. Suryawanshi; S. S. Tanavade; M. R. Ramteke
This paper deals with modified series-parallel resonant converter (MSPRC).
Leakage inductance and winding capacitance of high-frequency transformer
are incorporated in the analysis of basic operation of circuit. MSPRC is
well suited to high-voltage dc applications, and is operated just above
the resonant frequency to maintain zero-voltage switching (ZVS).
Sampled-data technique of the MSPRC is presented, and small signal
modelling of the converter is obtained. Steady-state behaviour using
complex ac-circuit analysis is used for design of resonant tank circuit.
The magnitude of output voltage is regulated by using variable frequency
control. An experimental prototype unit is developed using high frequency
switches (MOSFETs). Simulation results are compared with those obtained

Self-Sensing Active Magnetic Bearings Using a New PWM Amplifier Equipped
with a Bias Voltage Source [Details]
By T. Yoshida; Y. Kuroba; K. Ohniwa; O. Miyashita
In this paper, a self-sensing active magnetic bearing (AMB) with a new PWM
amplifier is proposed. This amplifier employs two DC sources: one supplies
a control current and the other supplies a bias current. A pair of
electromagnets driven by this amplifier also works as a position sensor
based on bridge measurement. In the experiment, a rotor running at 45,000
min-1 is suspended by the proposed 5-axis AMB without any position
sensors. The experimental system is still stable even if the length of the
cables between the PWM amplifiers and the electromagnets is varied within
45 meters.

A Simple Direct Torque Fuzzy Control of Induction Motor using Space Vector
Modulation [Details]
By A. El Afia; M. Khafallah; A. Chériti; B. Elmoussaoui; A. Saad
In this paper, the concept and analysis of a simple direct-torque fuzzy
control (DTFC) scheme of motor induction using space vector modulation
(SVM) is presented. A fuzzy logic control system is applied to obtain high
performance decoupled flux and torque control. A principle and a tuning
procedure of this method are discussed. The simulation results, that prove
the performance of the proposed scheme as an alternative to the
conventional approach, and a consideration for implementation on a DSP
development system of proposed scheme, are presented.

Enhanced Locomotive Drive System Behaviour applying a Single Voltage
Source Inverter Dual Induction Motor Structure [Details]
By R. Peña-Eguiluz; M. Pietrzak-David; B. de Fornel
A special Multi-machine Multi-converter System (MMS) structure is
presented in this paper. It is a mono-inverter dual motor structure
specially designed to be applied in railway traction. In traction
applications the necessity to provide an excellent torque response is
indispensable. As a consequence, in order to control the torque production
of both motors in this kind of structures, special methodologies known as
co-operative control structures based in the classical Field Oriented
Control (FOC) can be applied. Mono-inverter dual induction motor drive
system structure enhances the locomotive behaviour, reducing undesirable
effects produced by external or by internal perturbations. The obtained
system behaviour is compared with the classical locomotive drive control
system operation. An industrial locomotive manufacturer has confirmed the
simulated model. Obtained results are applied to analyse the system
behaviour of the two considered control methods, taking into account four
characteristic perturbations in this kind of power traction systems.

Current Converter with Two-Loop Maximum Power Tracking Control for Solar
Arrays [Details]
By C. Hua; J. Lin
Conventional maximum power point tracking (MPPT) controllers only use one
loop tracking. The fast changes of atmospheric conditions result in power
loss in the tracking process. In this paper, two-loop MPPT of solar array
using a current converter is presented. The solar array is treated as a
current source model instead of the traditional voltage source. A current
converter operating in MPPT mode under different insolations and
temperatures is designed for a solar power system. The principle of energy
conservation is used to develop the small-signal model and transfer
function for the solar power system. Using principle of energy
conservation, the drawback of state-space-averaging method can be
overcome. A digital PI compensator is used to implement the proposed MPPT
control in real-time, and the effect of the floating operation by the
fixed-point processor is also considered. Simulations and experimental
results are presented to demonstrate better performance for the proposed

Bond Graph Based Stability Analysis of a Railway Traction System
By G. Gandanegara; X. Roboam; B. Sareni; G. Dauphin-Tanguy
This paper emphasises the interest of the Bond Graph approach for analysis
and system design of heterogeneous and multi-field devices. In particular,
the local stability analysis of non linear systems can be directly derived
from the linearised Causal Bond Graph. This method is applied to a typical
electrical engineering system: a railway traction device involving
electromechanical couplings. Validity, usefulness and originality of this
approach are displayed.

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