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The proceedings contain 138 papers from the 2004 IEEE 35th Annual Power Electronics Specialists Conference, PESC04 - Volume 5. The topics discussed include: an approach to torque ripple compensation for high performance PMSM servo system; digital control of a voltage source inverter in photovoltaic applications; servo system with a quasi-direct converter; design of multiple-reference-frame PI controller for power converters and feasibility study on one cycle control for PWM switched converters.
 "Conference proceedings: 2004 iee 35th annual power electronics specialists conference, pesc04: Volume 2," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 896.
The proceedings contains 147 papers from the conference on 2004 IEEE 35th Annual Power Electronics Specialists Conference, PESCOY: Volume 2. The topics discussed include: experimental validation of an optimized piezoelectric transformer design with interleaving of electrodes; an automated design system for switching power regulators; optimization of stranded-wire windings and comparison with Litz wire on the basis of cost loss; frequency response analysis for switching converters in SPICE without averaging; and analytical model for magnetic components including self-heating effects.
 "Conference proceedings: 2004 ieee 35th annual power electronics specialists conference, pesc04 - volume 4," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 810.
The proceedings contain 130 papers from the 2004 IEEE 35th Annual Power Electronics Specialists Conference PESCφ4 - Volume 4. Topics discussed include: short-time backup-power for mains-fed DC-links by double layer capacitors; output impedance performance for parallel operation of UPS inverters using wireless and average current-sharing controllers; a new method for three-phase voltage detection and protection; a voltage and frequency droop control method for parallel inverters; safe controlled islanding of inverter based distributed generation and design comparison and control of medium voltage STATCOM with novel twin converter topology.
 "Conference proceedings: 2004 ieee 35th annual power electronics specialists conference, pesc 04 - volume 1," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 868.
The proceedings contain 136 papers from the conference on 2004 IEEE 35th Annual Power Electronics Specialists PESCφ4-volume 1. The topics discussed include: motor drive technology-history and visions for the future; future of power semiconductors; power electronics and alternative energy generation; dual currrent-mode control for single-switch two-output switching power converters; a ripple theorem for PWM dc-to-dc converters operating in continous conduction mode and a novel control for two-stage dc/dc converter with fast dynamic response.
 "Conference proceedings: 2004 ieee 35 th annual power electronics specialists conference, pesc04 - volume 3," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 1785.
The proceedings contain 121 papers from the 2004 IEEE 35th Annual Power electronics Specialists Conference, PESCφ4 - Volume 3. The topics discussed include: winding loss from an air-gap; D-Q models for resonant converters; TRIAC dimmable electronic ballast with lamp power equalization; a control IC for electronic ballast with mixed mode excitation; an IC-less dimmable electronic ballast for fluorescent lamps and parallel connection of piezoelectric transformers.
 "Conference proceedings: 2004 ieee 35th annual power electronics specialists conference, pesco4 - volume 6," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 854.
The proceedings contains 128 papers from the conference on 2004 IEEE 35th Annual Power Electronics Specialist Conference, PESCO4 - Volume 6. The topics discussed include: zero-voltage-switching multi-resonant three-level converters; multiple frequency modeling of high frequency resonant inverter system; new integration concept of auxiliary commutation circuits: ZVT case study; power processing issues for micro-power electrostatic generators; integrated driver supply with JFET as a 'linear' regulator; a solder bumping interconnect technology for high-power devices and concepts for high packaging and integration efficiency.
 C. Abbate, G. Busatto, R. Manzo, L. Fratelli, B. Cascone, G. Giannini, and F. Iannuzzo, "Experimental optimisation of high power igbt modules performances working at the edges of their safe operating area," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 2588.
An experimental characterization of new 3300V - 1200A IGBT modules both at high temperature and for output currents beyond SOA, at turn-off and in short circuit conditions, is presented. Moreover a new driving strategy that improves, in comparison with conventional driving methods, IGBT turn-on on inductive load, in terms of power dissipation, is reported. Results demonstrate that, in principle, it is possible to operate at larger current than RBSOA limits and at temperature of 145°C. As regard turn-on operation, up to 37% dissipated energy reduction can be obtained with the innovative on-gate control. All the experimental study has been performed by means of a non-destructive experimental set-up, where IGBT modules are switched in presence of a protection circuit that is able to prevent device failure at the occurrence of any possible instable behaviour.
 C. Abbey and G. Joos, "Integration of energy storage with a doubly-fed induction machine for wind power applications," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 1964.
The doubly-fed induction machine has been shown to be a popular choice for wind power generators due to the desirable features of variable speed operation, reduced converter size and the ability to control the real and reactive output power. For this topology, reactive power compensation can be supplied from both the supply side and rotor side converters and thus has the potential to provide voltage support Addition of an energy storage element on the dc link can help to improve transient stability of the system as well as enable a greater level of control over the real power output. The storage element can be used to smooth the generator's power output by injecting real power under low wind conditions and storing energy during high wind conditions. The design of the proposed system and the control is presented and its feasibility is supported using its representation in EMTP-RV.
 A. G. Abo-Khalil, D.-C. Lee, and J.-K. Seok, "Variable speed wind power generation system based on fuzzy logic control for maximum output power tracking," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 2039.
This paper proposes a variable speed control scheme of grid-connected wind power generation system using cage-type induction generators, which is based on a fuzzy logic control. The induction generator is operated in indirect vector control mode, where the d-axis current controls the excitation level and the q-axis current controls the generator torque, by which the speed of the induction generator is controlled according to the variation of the wind speed in order to produce the maximum output power. The generated power flows into the utility grid through the back-to-back PWM converter. The grid-side converter controls the dc link voltage and the line-side power factor by the q-axis and the d-axis current control, respectively. Experimental results are shown to verify the validity of the proposed scheme.
 A. A. Aboulnaga and A. Emadi, "Integrated magnetic bifred converter with lower intermediate capacitor voltage," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 1551.
The Boost Integrated Flyback Rectifier/Energy storage DC/DC (BIFRED) converter is mainly used to achieve a high input power factor and input-to-output isolation. The use of this topology is limited because of the high DC bus voltage on the internal-energy storage capacitor and consequentially high voltage stress on the primary side semiconductors. This paper presents a modified integrated magnetic BIFRED converter topology, namely bi-flyback converter, with lower voltage stress. Moreover, the magnetic integration of the magnetic components reduces the overall cost, weight, and packaging size. Simulation results as well as experimental versifications for basic and modified topologies are presented.
 A. A. Aboulnaga and A. Emadi, "Performance evaluation of the isolated bidirectional cuk converter with integrated magnetics," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 1557.
In this paper, an isolated bidirectional DC/DC Cuk converter featuring high power density, zero input/output current ripples, and symmetrical design is presented. The magnetic components of the converter, which include the input inductor, the output inductor, and the isolation transformer, are assembled together in one magnetic structure. The magnetic assembly is modeled and designed using the Gyrator-Capacitor (G-C) approach. Simulation and experimental results are presented to verify the converter performance in both forward and backward modes of operation. The effect of the switching frequency on the percentage current ripples is discussed.
 J. A. Abu-Qahouq, H. Mao, H. J. Al-Atrash, and I. Batarseh, "Maximum efficiency point tracking (mept) method and dead time control," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 3700.
Adaptive control method, to be called Maximum Efficiency Point Tracking (MEPT), is presented in this paper. This method tracks the system efficiency, which is a DC-DC converter here, and optimizes adaptively system parameters to maximize the efficiency. MEPT method is used in this paper to optimize the primary-to-secondary switches dead time parameter in an isolated topology to prevent switches body diodes conduction during freewheeling periods and reduces body diodes conduction related losses in order to improve the efficiency. MEPT tracks the converter efficiency while changing the dead time and detects the optimized dead time value at the maximum efficiency point at different load and line conditions. In this paper, the MEPT method is discussed, analyzed, and digital control algorithm and implementation are presented.
 J. A. Abu-Qahouq, H. Mao, and I. Batarseh, "Alternated duty cycle control method for half-bridge dc-dc converter," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 178.
A control method, namely, Alternated Duty Cycle (ADC) control, is presented in this paper. This method can achieve soft-switching for at least one switch of the two half-bridge switches. When soft-switching can be only achieved for one switch, ADC control alternates the soft-switching realization between the two switches so that each switch will be soft-switched during half of the time and hard-switched during the other half, keeping equal power losses distribution between the switches. Moreover, any asymmetry in the duty cycle will not cause asymmetric components stresses or transformer DC bias when ADC control is used. Theoretical analysis and implementation are presented along with experimental results.
 J. Acero, J. M. Burdio, L. A. Barragan, D. Navarro, and S. Llorente, "Emi improvements using the switching frequency modulation in a resonant inverter for domestic induction heating appliances," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 3108.
In this paper the spread-spectrum technique is applied to a resonant half-bridge inverter for domestic induction heating in order to improve the Electromagnetic Interference (EMI). This technique has been successfully applied in Switching Mode Power Supplies (SMPS). Two different switching frequency modulation strategies are tested and the influence of different modulation parameters is analysed. Both simulation and experimental test bench including inverter and measuring instrumentation are presented. The simulated instruments and detectors are based on homodyne receiver. Finally experimental measures are compared with simulation results.
 V. G. Agelidis, "Introducing power electronics technologies into the aerospace engineering undergraduate curriculum," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 2719.
Power electronics technologies will play a vital role in the aerospace industry in the years to come and all emerging technologies are already an important part of the industry either at R and D or in many cases production level. It is recognised that aerospace engineering and avionics students need to be aware of these technologies and in a position to work as a team member with development of power electronics technologies addressing specific needs. The paper discusses pioneering initiatives undertaken and the newly introduced course of power electronics and related technologies into the undergraduate aerospace engineering curriculum at the University of Glasgow, UK. The various components of the course are described in detail, along with the laboratory programme which is based on a "closed-loop" approach for the understanding of the various concepts. The views of the students regarding their experiences, especially in the laboratory environment, are critically discussed.
 H. Akagi and S. Tamura, "A passive emi filter for an adjustable-speed motor driven by a 400-v three-level diode-clamped inverter," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 86.
This paper deals with a passive EMI filter designed for a 400-V, 15-kW induction motor driven by a three-level diode-clamped PWM inverter with a carrier frequency of 8 kHz. The EMI filter consists of a common-mode filter and a small-sized dv/dt reduction circuit. The common-mode filter is unique in terms of access to the motor neutral point. It can remove the common-mode voltage produced by the inverter from the motor terminals. This succeeds in eliminating both high-frequency motor shaft voltage and ground leakage current from the inverter-driven motor. The viability and effectiveness of the EMI filter is verified by experimental results even in the case that the motor is 100 m away from the inverter.
 E. Alarcon, G. Villar, S. Ferrandez, F. Guinjoan, and A. Poveda, "Ripple-reduction tuned filtering switching power converter topology," in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2004, pp. 3739.
This paper presents a low-ripple topology for switching power converters that approximates the ideal ripple-free averaged dynamics by means of reactive passive tuned filters. The low-ripple characteristics can be taken advantage of to either improve the suitability of the switching power converter to supply ripple-sensitive loads, or to reduce the value of the converter main filtering capacitor. The work explores this second property in the context of pursuing further miniaturization and particularly on-chip circuit integration of a switching power converter. Experimental results for a low frequency prototype demonstrate the functionality of the proposed low-ripple topology, showing in particular a reduction of a factor of seven for the main capacitor in the converter.
 A. N. Alcaso and A. J. M. Cardosa, "Asymmetrical operation of a twelve-pulse lci drive system with power converter faults," in
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