By Topic

Power Electronics and Motion Control Conference, 2004. IPEMC 2004. The 4th International

Date 14-16 Aug. 2004

Go

Filter Results

Displaying Results 1 - 25 of 150
  • Conference Proceedings - IPEMC 2004 - The 4th International Power Electronics and Motion Control Conference - Cover

    Page(s): 0_1
    Save to Project icon | PDF file iconPDF (54 KB)  
    Freely Available from IEEE
  • [Inside front cover - Blank]

    Page(s): 0_2
    Save to Project icon | PDF file iconPDF (3 KB)  
    Freely Available from IEEE
  • [Breaker pages]

    Page(s): 0_3 - 0_4
    Save to Project icon | PDF file iconPDF (163 KB)  
    Freely Available from IEEE
  • Conference Proceedings - IPEMC 2004 - The 4th International Power Electronics and Motion Control Conference - Title

    Page(s): i
    Save to Project icon | PDF file iconPDF (32 KB)  
    Freely Available from IEEE
  • [Breaker page]

    Page(s): ii
    Save to Project icon | PDF file iconPDF (5 KB)  
    Freely Available from IEEE
  • Committees

    Page(s): iii - v
    Save to Project icon | PDF file iconPDF (108 KB)  
    Freely Available from IEEE
  • Message From the Technical Program Chair

    Page(s): vii
    Save to Project icon | Request Permissions | PDF file iconPDF (48 KB)  
    Freely Available from IEEE
  • [Breaker page]

    Page(s): 0_5
    Save to Project icon | PDF file iconPDF (4 KB)  
    Freely Available from IEEE
  • Contents

    Page(s): viii - xxvii
    Save to Project icon | PDF file iconPDF (1065 KB)  
    Freely Available from IEEE
  • Volume 3

    Page(s): xxviii
    Save to Project icon | PDF file iconPDF (6 KB)  
    Freely Available from IEEE
  • A dual-transformer flyback converter in critical conduction mode

    Page(s): 1074 - 1079 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (260 KB) |  | HTML iconHTML  

    A dual-transformer flyback converter, which operates in critical conduction mode with synchronous rectification, is proposed for high-power adapter applications. The converter is easy implemented of only one main switch, with high efficiency and low cost. The principle of the circuit is presented and inherent power balance between the transformers analyzed. Both simulated and experimental results are given in detail. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A novel common-source type single-stage PFC converter

    Page(s): 1080 - 1084 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (282 KB) |  | HTML iconHTML  

    In this paper, a novel common-source type boost-forward single-stage PFC topology was proposed. By adding a second wind to the transformer, and using two active-clamp switches connected in common-source type, an active-clamp ZVS (zero voltage switching) could be obtained with a simple PWM control and output voltage feedback. The proposed topology was experimentally verified through the construction of a 15 V/8 A prototype unit operating at 100 kHz switching frequency, and input voltage of 100 Vrms, the power factor of above 0.957 and highest efficiency of 89.4% is obtained. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Zero-voltage-switching PWM full-bridge three-level converter

    Page(s): 1085 - 1090 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (416 KB) |  | HTML iconHTML  

    This paper proposes a novel control scheme allowing the full-bridge (FB) three-level (TL) converter to achieve zero-voltage-switching (ZVS) for the main switches while operating under three-level mode and two-level mode without penalizing the efficiency, which makes the converter adaptive to wide input voltage range. Furthermore, the voltage stress of the main switches is only half of the input voltage, which makes it very suitable in high input voltage applications. Compared with traditional FB converter, the output filter inductance of FB TL converter is significantly reduced due to lower high-frequency content of the secondary rectified voltage. Additionally the input current of the converter has quite little ripple, the input filter can be reduced. The operation principle of the FB TL converter is analyzed and verified on a 3 kW, 100 kHz prototype. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A PAC based three-phase zero-voltage soft-switching PWM converter

    Page(s): 1091 - 1096 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (361 KB) |  | HTML iconHTML  

    A novel based on phase and amplitude control (PAC) three-phase zero-voltage soft-switching (ZVS) PWM converter is presented. In resonance period for the ZVS converter the equivalent circuit, running conditions, the control signals and action waveforms is illustrated. The modulation method adopts the saw-tooth carrier with alternative positive and negative slopes, comparing with the conventional triangular carrier it brings advantages for system. A phasor adjusting method is proposed and the low-frequency math model of system is built. The configuration of control system and its operational principle are introduced. Experimental study with a 0.75 kW device shows that both in the rectifying and regenerating modes, the system can realize ZVS control and unity power factor, providing sinusoidal line currents, so it reaches the aim of restraining electromagnetic interference (EMI) and harmonic pollution. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A high power NPC three-level inverter equipped with IGCTs

    Page(s): 1097 - 1100 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (299 KB) |  | HTML iconHTML  

    In this paper, a high power NPC three-level inverter equipped with integrated gate-commutated thyristor (IGCT) is introduced and a hybrid space voltage pulse width modulation (SVPWM) method for three-level inverter is also proposed. By hybrid PWM the performance of the system is improved distinctness. The validity of the proposed PWM method is verified by experiment with a NPC three-level inverter equipped with 4.5 kV/4 kA IGCTs. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Enhanced control design of single phase AC-DC converter using power balance calculator

    Page(s): 1101 - 1104 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (196 KB) |  | HTML iconHTML  

    A single phase AC-DC converter with unity power factor (UPF) have been proposed in this paper. The hysteresis current control scheme is employed to track the line current command while the control signal of the four power switches are derived from the power balance calculator (PBC) for achieving a fast response, high power factor during steady state operation with a constant load. The proposed control scheme and the circuit configuration can be applied to the three phase converter to eliminate the harmonic currents from the nonlinear load. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Study on sliding-mode control in three-level converters

    Page(s): 1105 - 1110 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (282 KB) |  | HTML iconHTML  

    Sliding-mode control has such advantages as robustness, simple algorithm and good dynamic performance, so sliding-mode control was introduced into three-level (TL) converters in this paper. The design of sliding-mode control buck TL converter, including sliding-mode control surface design, equivalent control, stability and existence proof, was given as an example. Experiments of sliding-mode control buck TL converter and traditional PWM buck TL converter were carried out in order to analyze and compare. Analysis results verify that dynamic performance and robustness are improved greatly in the sliding-mode control buck TL converter compare with traditional PWM buck TL converter. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Power stage and control design for the ETO-based cascaded-multilevel converter for FACTS applications

    Page(s): 1111 - 1117 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (524 KB) |  | HTML iconHTML  

    This paper proposes 1.5 MVA emitter turn-off (ETO) thyristor-based H-bridge building blocks (HBBB) to demonstrate the performance of the ETO and the feasibility of the cascaded-multilevel converter (CMC) for high-power applications. Several applications for the ETO-based HBBB in flexible AC transmission system (FACTS) and medium-voltage adjustable speed drive (ASD) are discussed. Three HBBB prototypes are implemented and tested. The experimental results demonstrate the potential advantages of the HBBB for the utility applications. The modeling and feedback control for the STATCOM utilizing the ETO-based three-level cascaded converter are presented. The accuracy of the corresponding model and the superior performance of the feedback controller are verified by both simulation and experimental results. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Recent developments in topologies of single-phase buck-boost inverters for small distributed power generators: an overview

    Page(s): 1118 - 1123 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (378 KB) |  | HTML iconHTML  

    Unique requirements for small distributed power generation (DG) systems include low cost, high efficiency, and tolerance for an extremely wide range of input voltage variations. The inverters in such systems not only perform functions such as normal DC-AC conversion, output power quality assurance, various protections and system controls, but also meet these requirements, which have driven the inverter development toward simpler topologies and structures, lower component counts, and tighter modular design. Both single-stage and multiple-stage inverters have been developed for power conversion in DG systems. While single-stage inverters enjoy simple structure and low cost, they suffer from a limited range of input voltage variations and often a compromised system performance. On the other hand, multiple-stage inverters can accept a wide range of input voltage variations, but assume high cost, complicated structure, and low overall efficiency. This paper presents an overview of the development in the single-phase inverters for small distributed power generators with various circuit topologies and discussions as well as the identification of recent development trends. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An improved space vector PWM control algorithm for multilevel inverters

    Page(s): 1124 - 1129 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (335 KB) |  | HTML iconHTML  

    The research on the multilevel inverter has been receiving wide attention mainly due to its capability of high voltage operation without switching devices connected in series. In this paper, a simple, detailed and general space vector algorithm is given. To facilitate the design and digital implementation of the space vector algorithm, all the space vectors are transformed from the commonly used Cartesian coordinate system to a 60/spl deg/ coordinate system. At the same time, two switching states selection algorithms are studied for multilevel inverters: large small alternation (LSA) method and all mean (AM) switching states method, in which the latter one can give better performance in terms of the harmonics content on the transformer primary side though it has a higher device switching frequency than that of LSA. AM switching states selection method makes the concept of space vector modulation (SVM) consistent in two-level voltage source inverters and multilevel inverter; both output equivalent mean switching sates in every sampling period. Both of these two methods also features easy implementation and generality and can be used in any high-level cascaded H-bridge inverters. They are verified through computer simulations and experiments. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Comparison study of DC- DC-AC combined converters for integrated starter generator applications

    Page(s): 1130 - 1135 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (365 KB) |  | HTML iconHTML  

    This paper presents comparative studies among three DC-DC-AC combined converters for integrated starter generator (ISG) applications. The necessity of using DC-DC-AC combined converter to achieve optimal performance of an ISG system is explained. Analysis and computer simulation of the three DC-DC-AC candidates is conducted to illustrate their respective advantages and disadvantages. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Mixed voltage /current mode control of PWM synchronous buck converter

    Page(s): 1136 - 1139 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (200 KB) |  | HTML iconHTML  

    In this paper, we propose a mixed voltage/current mode control method of synchronous buck converter. Such mixed mode control lies between the traditional voltage mode and current mode control, but has the advantages of better noise immunity than current mode, better load transient response than voltage mode. While it is possible to design an optimal controller for synchronous buck converter under mixed mode operation, an example is provided to show that the traditional type III compensator is sufficient to stabilize the synchronous buck converter under all the three operating modes with different dynamic response performance. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • AC VRM topologies and control techniques for high frequency AC power distribution systems

    Page(s): 1140 - 1145 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (372 KB) |  | HTML iconHTML  

    In this paper, the topologies and control techniques of the AC voltage regulator modules (AC VRMs) which are currently available for the applications of the high frequency power distribution systems are reviewed. It is found that the series resonant converter employed with a series AC switch is the best choice among all the candidates. The steady-state characteristics of this topology are derived. Different modulation techniques applied to this topology are investigated. Experimental results are presented as the proof-of-concept. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Distributed point-of-use power supply architectures

    Page(s): 1149 - 1151 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (396 KB) |  | HTML iconHTML  

    This paper presents distributed point-of-use power supply (DPUPS) architectures for applications in advanced telecommunication and computer systems. The conventional architectures are reviewed. Based on the review DPUPSs are derived with the features including single-stage power conversion for multiple outputs regulation, high-voltage-low-current on-board power distribution, and power conversion into the required low-voltage at the point of load. DPUPS major advantages include fewer power components, reduced power losses, save of the PCB area, and improved voltage regulation at point-of-use. DPUPS implementations are given, and experimental results are presented as proof of concept. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A microprocessor controlled piezoelectric power converter

    Page(s): 1152 - 1157 Vol.3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (435 KB) |  | HTML iconHTML  

    Piezoelectric transformer (PT) for power conversion is receiving more and more attention because of its small thickness and high energy density. A major challenge of PT converter is the resonant characteristic of the PT that affects the performance of the whole converter. This paper presents a microprocessor controlled piezoelectric power converter system for cold cathode fluorescent lamp (CCFL) that can provide stable output around the resonant point of the PT. A microcontroller based control algorithm is introduced to provide frequency tracking. Experimental results are presented and illustrate that this system is suitable for such application. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.