Industrial Electronics, 2002. ISIE 2002. Proceedings of the 2002 IEEE International Symposium on

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  • An asymmetrical space vector method for single phase induction motor

    Publication Year: 2002, Page(s):1276 - 1278 vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (445 KB)

    Single phase induction motors are the workhorses in low-power applications in the world, and also where variable speed is necessary. Normally it is achieved either by the mechanical method or by controlling the capacitor connected with the auxiliary winding. Any of the above methods have some drawback for which the motor torque performance is not good enough. This paper addresses a new control met... View full abstract»

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  • A new complex recurrent neural network equalizer for data communication

    Publication Year: 2002, Page(s):1271 - 1275 vol.4
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (511 KB)

    A new modified version called decision feedback complex recurrent neural network equalizer (DFCRNNE) is proposed with the study of complex recurrent neural network adaptive equalizer (CRNNE). Based on DFCRNNE, a modified real time recurrent learning (CRTRL) algorithm is developed. Simulation results show that DFCRNNE has better performance than the CRNNE based on traditional CRTRL algorithm in com... View full abstract»

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  • Low-power low-voltage analog electronic circuits using the flipped voltage follower

    Publication Year: 2002, Page(s):1327 - 1330 vol.4
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (373 KB)

    In this paper, a new basic cell for low-power and/or low-voltage operation is identified. It is shown that different versions of this cell, called the "flip voltage follower", have been used in the past for different applications. New circuits using this cell are also proposed here. View full abstract»

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  • UPQC compensation strategy and design aimed at reducing losses

    Publication Year: 2002, Page(s):1264 - 1270 vol.4
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (635 KB)

    After showing how the UPQC is able to-compensate for network voltage variations through different operating strategies, one such strategy is proposed whose aim is to limit the total losses of the device. An estimate was made of the extent of the losses of converters as a function of the DC section voltage and of the maximum injectable voltage from the injection transformer and, subsequently, with ... View full abstract»

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  • Quantitative and robust direct digital control for an LBDCM driven positioning stage

    Publication Year: 2002, Page(s):1190 - 1195 vol.4
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (547 KB)

    The direct digital positioning control for a linear brushless DC motor (LBDCM) driven positioning stage with quantitative and robust performance is studied in this paper. An experimental LBDCM drive is first established, and its dynamic model is estimated from measurements. To handle the command tracking and load regulation position control problems simultaneously, a two-degrees-of-freedom (2DOF) ... View full abstract»

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  • Improved charge pump for flash memory applications in triple well CMOS technology

    Publication Year: 2002, Page(s):1322 - 1326 vol.4
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (556 KB)

    Flash memories, which are key components for non-volatile storage in many portable applications, require high voltages for correct operation. These voltage have to be generated by using on-chip voltage elevators. This paper presents an improved scheme for charge-pump voltage elevators suitable for use in triple-well CMOS fabrication technology. A direct drain-bulk connection is realized for the pa... View full abstract»

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  • H∞ Control of multi-module parallel DC-DC converters

    Publication Year: 2002, Page(s):1053 - 1058 vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (468 KB)

    This paper proposes the design of the Average Current-mode Control loop applied to parallel converters by means of H∞ Control Theory. The sensitivity to low-frequency disturbances of the converter can be drastically reduced by applying H∞ control techniques, preserving the loop stability with respect to high frequency uncertainties of the linear model. The analytical study is validated... View full abstract»

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  • Comparison of current control techniques for PWM rectifiers

    Publication Year: 2002, Page(s):1259 - 1263 vol.4
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (426 KB)

    This paper presents current control techniques for three phase PWM rectifiers. A three different solutions for a current regulation techniques are presented. The synchronous PI current controller (CC) which becomes a standard solution in industrial applications is compared with two others techniques: resonant CC and artificial neural network based CC which can be an interesting alternative for cur... View full abstract»

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  • Passivity based control applied to stand alone generators

    Publication Year: 2002, Page(s):1160 - 1165 vol.4
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (479 KB)

    The paper presents the study and the design of air embedded electronic control system that allows diesel engine driven stand-alone synchronous generators to operate at variable (optimum) speed. A new control strategy has been developed, based on passivity theory for the PWM inverter control and a fuzzy, logic fuel admission control system, to overcome the nonlinearity introduced into the system by... View full abstract»

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  • A rotor position estimator for switched reluctance motors using CMAC

    Publication Year: 2002, Page(s):1184 - 1189 vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (582 KB)

    This paper presents an approach to the rotor position estimation in switched reluctance motors (SRMs) by using a cerebellum model articulation controller (CMAC). Previous research has shown that an artificial neural network (ANN) forms an efficient mapping structure for the nonlinear SRM. Through measurement of the flux linkages and currents for the phases, a feedforward neural network (FFNN) is a... View full abstract»

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  • Ball on beam on roller: a new control laboratory device

    Publication Year: 2002, Page(s):1318 - 1321 vol.4
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (506 KB)

    This paper describes a new control laboratory device, named ball on beam on roller. The control objective is to govern the position of a ball on the beam, the latter freely resting on the driven roller. The angular attitude of the beam is varied by shifting the lateral position of the beam, through control of the roller's angular acceleration. The system is under-actuated and has complex dynamics. View full abstract»

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  • Measurements of spectral distribution of EMI emissions from adjustable speed drives of induction motors

    Publication Year: 2002, Page(s):1392 - 1397 vol.4
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (668 KB)

    Adjustable speed drives (ASDs) are widely used in office buildings, hospitals, private residences, and modern electric vehicles. The electromagnetic interference (EMI) noise produced by ASDs may affect proper operation of various electronic systems. At the University of Wyoming, an intensive study of EMI emissions from ASDs has been completed. A system under test (SUT) assembled for this work incl... View full abstract»

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  • Challenges in mixed-signal integrated system design for industrial applications

    Publication Year: 2002, Page(s):1335 - 1340 vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (694 KB)

    This paper illustrates some difficult aspects of mixed-signal CMOS integrated circuit design. Limitations coming from coupling between digital and analog blocks are discussed., and a simple method to simulate the effects coming from nonideal biasing of different chip regions is presented. Experimental results on test chips validate the proposed approach. View full abstract»

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  • Practical considerations concerning the interleaved transition mode single-stage ballast

    Publication Year: 2002, Page(s):1065 - 1070 vol.4
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (648 KB)

    The aim of this paper is to present a novel single-stage interleaved ballast focusing on practical design aspects like: key current expression, overall losses, harmonic analysis of the differential-mode EMI current and preheating ballast function. A new preheating method is; also presented. A PSPICE model is used to perform the analysis. View full abstract»

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  • ISIE 2002 - 2002 IEEE International Symposium on Industrial Electronics

    Publication Year: 2002, Page(s):0_1 - 0_36
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1039 KB)

    First Page of the Article
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  • Comparison of transient performance in a peak current-mode flyback converter

    Publication Year: 2002, Page(s):1049 - 1052 vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (370 KB)

    In this paper, the voltage regulation of a flyback converter under load transient conditions is investigated. First, the best regulation is found with an optimization algorithm which uses a cycle-by-cycle model. The predictions are then compared with the performance given by an optimized peak current-mode controlled converter. Simulation results are then provided to highlight the two different out... View full abstract»

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  • Optimal modulation strategy for active front-end inverter feeding induction motors

    Publication Year: 2002, Page(s):1253 - 1258 vol.4
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (544 KB)

    Torque ripple in inverter fed induction motors is a critical problem if high switching frequency cannot be achieved because of the drive power rating or when switching losses must be kept low. In that case, the torque ripple minimisation should be one of the goals of the control strategies. The paper presents a PWM technique that can be used to minimise the steady state torque ripple of variable s... View full abstract»

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  • Quantitative analysis of shunt active filter compensation characteristics under different rectifier load situations

    Publication Year: 2002, Page(s):1241 - 1246 vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (454 KB)

    Active filters have been drawing a lot of attention and have been put into practice to compensate the harmonies generated by nonlinear loads, mainly rectifiers, in electric power systems. By now, the shunt active filter is the most popular type of active filter. It has been noticed that the shunt active filter may have very different compensation characteristics for different types of rectifier lo... View full abstract»

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  • Modeling and electronic control of a lighting system

    Publication Year: 2002, Page(s):1229 - 1234 vol.4
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (517 KB)

    In the paper, the dynamic model of a lighting system is taken into account and control strategies for controlling the amplitude of the load voltages and for minimizing the neutral current are presented. All the main components of the electronic system (supply, autotransformer, rectifier, capacitive filter, inverter, etc.) have been modeled in detail by using a graphical modeling technique named Po... View full abstract»

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  • Stability analysis of electrical drives fed by matrix converters

    Publication Year: 2002, Page(s):1108 - 1113 vol.4
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (536 KB)

    Input filters are usually adopted in electrical drives in order to improve the input current quality and to reduce the input voltage distortion. These filters; can determine instabilities, depending on the converter topology and drive control strategy. In this paper the stability of an electrical drive fed by a three-phase to three-phase matrix converter is analyzed considering two different input... View full abstract»

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  • Evaluation of insulation systems for IGBT PWM inverter-fed low-voltage induction motors

    Publication Year: 2002, Page(s):1154 - 1159 vol.4
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (633 KB)

    The development of advantageous power electronic switching devices such as insulated gate bipolar transistors (IGBTs) has made it possible for the inverter to realize high frequency switching operation and the effective performance of pulse-width modulated (PWM) inverters for driving induction motors. On the other side, the high dv/dt of IGBT PWM inverters appears across the first few turns of win... View full abstract»

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  • Electrodes' erosion in a liquid medium [US lithotriptor]

    Publication Year: 2002, Page(s):1289 - 1294 vol.4
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (532 KB)

    We seek by this work to tackle the problems of electrodes' durability of a lithotriptor, which is intended to break a renal calculus. These electrodes functioning in a liquid medium are made up of a composite material. However, in spite of their high prices, these electrodes bear only 3000 electric discharges corresponding to a net time utilization of approximately one hour. It is thus a question ... View full abstract»

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  • Worst-case tolerance design by genetic algorithms

    Publication Year: 2002, Page(s):1178 - 1183 vol.4
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (629 KB)

    An evolutionary approach to worst-case circuit tolerance design is presented in this paper. Thanks to an appropriate choice of the fitness function and of the reproduction operators, the algorithm is able to explore a wide sub-region of the space of parameters without any prior knowledge about position and size of the region of acceptability. Vertex analysis has been used to check the feasibility ... View full abstract»

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  • Linear voltage regulator susceptibility to conducted EMI

    Publication Year: 2002, Page(s):1398 - 1403 vol.4
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (541 KB)

    In this paper the susceptibility of voltage regulator circuits to electromagnetic interference is analyzed by experimental measurements. This analysis highlights two different effects of EMI on this circuit, for different levels of the injected power: an offset in the regulated voltage for low-level injection and a complete circuit failure for high-level injection. Both these effects are essential... View full abstract»

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  • Hexapod locomotion control through a CNN based decentralized system

    Publication Year: 2002, Page(s):1312 - 1317 vol.4
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (537 KB)

    In this paper the decentralized locomotion control of a bio-inspired hexapod robot is realized by using cellular neural networks (CNNs). This approach is inspired by the model of decentralized locomotion control in the stick insect, where local influences, based on the leg status, revealed by contact sensors, coordinates the CNN cells devoted to control each of the legs. To prove the suitability o... View full abstract»

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