EPE Journal Volume 13-4 
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EPE Journal Volume 13-4 - Editorial
EPE Journal Volume 13-4 - Papers



 EPE Journal Volume 13-4 - Editorial 

More challenges for the years to come  [Details]
By T. Undeland

The Editorial of the EPE Journal Volume 13 N°4, "More challenges for the years to come", written by Prof. Tore Undeland, the President of EPE Association.


 EPE Journal Volume 13-4 - Papers 

Fipbus Communication Network for Power Switches Control  [Details]
By J.P. Lavieville; C. Aďt Mahrez; W. Weber; J.L. Thomas

This paper proposes an insulated standard high-speed serial link communication system to control several power switches. A specific synchronisation method is proposed. the network protocol, hardware and software are discussed.

Analytic Calculation of the DC-Link Capacitor Current for Pulsed Single-Phase H-Bridge Inverters  [Details]
By F. Renken

For pulsed single-phase H-bridge inverters the capacitor current in the dc-link circuit is analytically calculated. These calculations can be applied for a constant dc-voltage as well as for a sinusoidal modulated voltage and sinusoidal current at the output. The additional load of the dc-link capacitor caused by harmonic currents of the filter circuit or by switching transitions of semiconductors is examined, too. At last, the calculations are confirmed by practical measurements.

Design Guidelines for DC-DC Converters with Dynamic Voltage Scaling  [Details]
By A. Soto; P. Alou; J. Oliver; J.A. Cobos; T. Riesgo

The energy consumption in wireless systems limits autonomy, high performance and further reduction of size. Dynamic Voltage Scaling (DVS) is an alternative solution that can dramatically reduce energy consumption in digital systems. The power supply becomes a very important part of the system in this technique as it enables the voltage scaling. This paper deeply analyses the requirements and challenges for these power supplies, clarifying the design issues and highlighting available interesting solutions and research trends.

A High Resolution Multilevel Voltage Space Phasor Generation for an Open-end Winding Induction Motor Drive  [Details]
By M.R. Baiju; K. Gopakumar; K.K. Mohapatra; V.T. Somasekhar; L. Umanand

A topology for high resolution voltage space generation for an open-end winding induction motor drive is presented in this paper. The open-end winding induction motor is fed from both ends by two 3-level inverters with asymmetrical d.c. links. This results in voltage space phasor levels equivalent to a conventional 9-level inverter. The 3-level inverters used in the proposed drive, are realised by cascading two 2-level inverters and do not require the neutral point clamping diodes. Compared to the H-bridge topology, the proposed scheme uses a lower number of power supplies. In the multilevel carrier based Sinusoidal Pulse Width Modulation ( SPWM ), used for the proposed drive, a progressive discrete d.c. bias depending upon the speed range is given to the reference wave so that the drive can operate in the i-level modes (i = 2, 3, ..9) depending on the speed range. The inverter with the higher d.c.-link voltage is switching less frequently, compared to the inverter with the lower d.c.-link voltage. The drive is implemented and tested with a 1.5 kW open-end winding induction motor and the experimental results are presented.

The Role of Power Electronics in Future 42V Automotive Electrical Systems  [Details]
By J.G. Kassakian

In the future cars will have a 42 V electrical system and operate in the “idle-stop” mode. Both developments present opportunities for innovative power electronic applications. Idle-stop operation requires a supply of electric power to maintain Heat Ventilation Air Conditioning (HVAC) and other ancillary functions when the engine is off, motivating the development of new generation and conversion technology. Electrification of functions such as engine valve operation, transmission clutches and water pumps also present cost, control and reliability challenges. The 42 V architecture is described and some of the resulting opportunities and challenges are discussed.

Teaching Power Electronics in the 21st Century  [Details]
By P. Bauer; J.W. Kolar

Advances in power electronics and changing demands do make necessary changes in education of power electronics. This concerns the theoretical (lectures) as well as the practical part of the education. The use of the new media (interactive e-learning), problem-based and project-organized learning are possible ways to improve the quality of the education. In this paper a web-based learning tool for Power Electronics and two project-oriented practical for power electronics education are introduced: problem-based learning in the first year of study (theme project) and the design-oriented practical for the fourth year of study as a supplement to lectures on power electronics.