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  • Conference paper
    Sandells D, Green TC, Power A, Osborne Met al., 2001,

    Chain cell converters in energy storage applications

    , London, IEE AC/DC transmission conference, London, November, Publisher: IEE, Pages: 292-297, ISSN: 0537-9989
  • Conference paper
    Marks JH, Green TC, 2001,

    Predictive control of active power filters

    , New York, 32nd annual power electronics specialist conference (PESC 2001), Vancouver, Canada, 17 - 21 June 2001, Publisher: IEEE, Pages: 1396-1401
  • Conference paper
    Astolfi A, Menini L, 2001,

    Noninteracting control with stability for nonlinear m-inputs m-outputs Hamiltonian systems

    , New York, 40th IEEE conference on decision and control, Orlando, Florida, 4 - 7 December 2001, Publisher: IEEE, Pages: 3384-3385
  • Conference paper
    Strbac G, 2001,

    Trading electricity and ancillary services in the reformed England and Wales electricity market

    , Winter meeting of the IEEE Power Engineering Society; Wolumbus, OH, Publisher: Institute of Electrical and Electronics Engineers, Pages: 41-44
  • Conference paper
    Papakos V, Jaimoukha IM, 2001,

    Implicitly restarted lanczos algorithm for model reduction

    , 40th IEEE conference on decision and control, Orlando, Florida, 4 - 7 December 2001, Publisher: IEEE Control Systems Society, Pages: 3671-3672
  • Conference paper
    Pudjianto D, Ahmed S, Yao LZ, Strbac Get al., 2001,

    TP-2.3 Optimal reactive power allocation using sensitivity analysis based security constrained OPF (SA-SCOPF)

    , 5th International power engineering conference, Grand Copthorne Waterfront, Singapore, Pages: 111-116
  • Book chapter
    Mayne DQ, 2001,

    Preamble to: Optimal regulation processes by L. S. Pontryagin

    , Control theory : twenty-five seminal papers (1932-1981), Editors: Basar, York, Publisher: IEEE Press, Pages: 125-126, ISBN: 9780780360211
  • Conference paper
    Kerrigan EC, Maciejowski JM, 2001,

    Robust feasibility in model predictive control: Necessary and sufficient conditions

    , 40th IEEE Conference on Decision and Control, 4 - 7 December 2001, ORLANDO, FLORIDA, Publisher: IEEE, Pages: 728-733
  • Conference paper
    Astolfi A, Colaneri P, 2001,

    A novel algorithm for the solution of the static output feedback stabilization problem

    , 40th IEEE conference on decision and control, Orlando, Florida, 4 - 7 December 2001, Publisher: IEEE Control Systems Society, Pages: 4875-4876
  • Conference paper
    Kaliora G, Astolfi A, 2001,

    A simple design for the stabilization of a class of cascaded nonlinear systems with bounded control

    , New York, 40th IEEE conference on decision and control, Orlando, Florida, 4 - 7 December 2001, Publisher: IEEE, Pages: 3784-3789
  • Conference paper
    Ortega R, Hsu L, Astolfi A, 2001,

    Adaptive control of multivariable systems with reduced prior knowledge (i)

    , 40th IEEE conference on decision and control, Orlando, Florida, 4 - 7 December 2001, Publisher: IEEE Control Systems Society, Pages: 4198-4203
  • Conference paper
    Astolfi A, Hsu L, Netto M, Ortega Ret al., 2001,

    A solution to the adaptive visual servoing problem

    , New York, IEEE international conference on robotics and automation, Seoul, South Korea, 21 - 26 May 2001, Publisher: IEEE, Pages: 743-748
  • Book chapter
    Mayne DQ, Lyung L, 2001,

    Preamble to: Discrete-time multivariable adaptive control by G. C. Goodwin, P. J. Ramadge and P. E. Caines

    , Control theory : twenty-five seminal papers (1932-1981), Editors: Basar, York, Publisher: IEEE Press, Pages: 485-486, ISBN: 9780780360211
  • Conference paper
    Astolfi A, Menini L, 2001,

    A characterization of the noninteracting control problem with stability for a class of nonlinear hamiltonian systems

    , Oxford, 5th symposium on nonlinear control systems; nonlinear control systems 2001, St. Petersburg, Russia, Publisher: Pergamon, Pages: 1499-1504
  • Conference paper
    Holdsworth L, Jenkins N, Strbac G, 2001,

    Electrical stability of large, offshore wind farms

    , Pages: 156-161, ISSN: 0537-9989
  • Conference paper
    Astolfi A, Colaneri P, 2001,

    An algebraic characterization for the static output feedback stabilization problem

    , American control conference, Arlington, VA, Publisher: IEEE, Pages: 1408-1413
  • Book chapter
    Mayne DQ, 2001,

    Preamble to: The structure of dynamic programming by R. Bellman

    , Control theory: twenty-five seminal papers (1932-1981), Editors: Basar, York, Publisher: IEEE Press, Pages: 113-114, ISBN: 9780780360211
  • Journal article
    De Pinho MDR, Vinter RB, Zheng H, 2001,

    A maximum principle for optimal control problems with mixed constraints

    , IMA Journal of Mathematical Control and Information, Vol: 18, Pages: 189-205, ISSN: 0265-0754
  • Conference paper
    Astolfi A, Bolzern P, Locatelli A, 2001,

    Path-tracking of a tractor-trailer vehicle via Lyapunov techniques

    , 2001 European control conference, Porto, Portugal, Pages: 451-456
  • Conference paper
    Lovera M, Astolfi A, 2001,

    Global attitude regulation using magnetic control

    , New York, 40th IEEE conference on decision and control, Orlando, Florida, 4 - 7 December 2001, Publisher: IEEE, Pages: 4604-4609
  • Conference paper
    Astolfi A, Ortega R, 2001,

    Immersion and invariance: a new tool for stabilization and adaptive control of nonlinear systems

    , 5th symposium on nonlinear control systems; nonlinear control systems 2001, St. Petersburg, Russia, Publisher: Oxford; Pergamon, Pages: 91-96
  • Conference paper
    Astolfi A, Chhabra D, Ortega R, 2001,

    Asymptotic stabilization of selected equilibria of the underactuated Kirchhoff's equations

    , American control conference, Arlington, VA, Publisher: IEEE, Pages: 4862-4867
  • Journal article
    Tse KK, Chung HSH, Hui SY, So HCet al., 2000,

    Analysis and spectral characteristics of a spread-spectrum technique for conducted EMI suppression

    , IEEE Transactions on Power Electronics, Vol: 15, Pages: 399-410, ISSN: 0885-8993

    Frequency modulation (FM) and random switching methods have been used for reducing conducted electromagnetic interference (EMI) in power converters. Limited theoretical studies and comparisons of these schemes, however, are available. In this paper, a detailed analysis and the spectral characteristics of a random carrier-frequency (RCF) technique for suppressing conducted EMI in an offline switched-mode power supply are presented. The analysis provides a theoretical platform for studying the characteristics of this random switching scheme. The level of randomness is defined for the RCF scheme and varied in the converter example so that its effects on the power spectra can be demonstrated. Theoretical predictions of the spectral characteristics of this scheme are confirmed with measurements. The RCF scheme has been compared with the standard constant-frequency pulsewidth modulation (PWM) scheme and the FM scheme. Comparisons of their spectral performance show that the RCF scheme has better conducted EMI suppression than the FM and standard PWM schemes.
  • Journal article
    Tse KK, Chung HSH, Hui SYR, So HCet al., 2000,

    A comparative investigation on the use of random modulation schemes for dc/dc converters

    , IEEE Transactions on Industrial Electronics, Vol: 47, Pages: 253-263, ISSN: 0278-0046

    A comparative investigation on the use of random modulation schemes for dc/dc converters is presented. The modulation schemes under consideration include randomized pulse position modulation, randomized pulsewidth modulation (PWM), and randomized carrier-frequency modulation with fixed and variable duty cycle. The paper emphasizes the suitability and applicability of each scheme in dc/dc converters. Issues addressed include the effectiveness of randomness level on spreading the dominating frequencies that normally exist in constant-frequency PWM schemes, and the low-frequency power spectral density (PSD) of each scheme. The validity of the analyses is confirmed experimentally by using a dc/dc buck converter operating in continuous conduction mode. The PSD of the output under each scheme will be presented and compared. © 2000 IEEE.
  • Journal article
    Basseville M, Parisini T, 2000,

    Special issue: Fault detection and isolation

    , INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING, Vol: 14, Pages: 681-682, ISSN: 0890-6327
  • Journal article
    Tang SC, Hui SY, Chung HSH, 2000,

    Characterization of coreless printed circuit board (PCB) transformers

    , IEEE Transactions on Power Electronics, Vol: 15, Pages: 1275-1282, ISSN: 0885-8993

    In this paper, coreless printed-circuit-board transformers are characterized. A range of coreless printed circuit board (PCB) transformers with different geometric parameters have been fabricated and tested. Based on a recently reported analytic method, the self inductance of these transformers is calculated. This analytical method is also extended to cover the prediction of the transformers' mutual inductance. All calculated parameters have been confirmed with measurements for the frequency range from 100 kHz to 30 MHz. These results provide useful information for the optimal design of coreless PCB transformers.
  • Journal article
    Casavola A, Mosca E, Angeli D, 2000,

    Robust command governors for constrained linear systems

    , IEEE Transactions on Automatic Control, Vol: 45, Pages: 2071-2077, ISSN: 0018-9286

    Robust command governors are designed for discrete-time linear time-variant (LTV) system with polytopic uncertainty models and subject to unknown bounded disturbances and pointwise-in-time input and state-related constraints.
  • Journal article
    Hui SY, Chung HSH, Yip SC, 2000,

    A bidirectional ac-dc power converter with power factor correction

    , IEEE Transactions on Power Electronics, Vol: 15, Pages: 942-949, ISSN: 0885-8993

    This paper presents new operation and performance of a thyristor-based ac-dc current-controlled boost-type converter that allows bidirectional power handling capability and provides input power factor correction and a near-sinusoidal input current waveform. The new converter can reduce harmonic pollution and disturbance on the supply mains. The feature of bidirectional power flow allows the stored energy in loads, such as motors, to regenerate back to the supply source, leading to an increase in overall energy efficiency and possibly a reduction in the size of the dc link capacitor. The operation is confirmed with the successful implementation of an experimental prototype. © 2000 IEEE.
  • Journal article
    Chung HSH, Chow WC, Hui SYR, Lee STSet al., 2000,

    Development of a switched-capacitor dc-dc converter with bidirectional power flow

    , IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, Vol: 47, Pages: 1383-1389, ISSN: 1057-7122

    This brief presents a switched-capacitor dc-dc converter that offers features of voltage step-down, voltage step-up, and bidirectional power flow. Concept of energy transfer is achieved by using two current-controlled bidirectional converter cells, which are operating in antiphase. Good regulation capability and continuous input current waveform are other substantial advantages that facilitate practical realization and reduce electromagnetic interference with other circuits and supply networks. State-space averaging technique is applied to study the static and dynamic characteristics. A 20-W, 5-V-9-V prototype has been built and has an overall efficiency of over 80% in all operations.
  • Journal article
    Tang SC, Hui SY, Chung HSH, 2000,

    Coreless planar Printed-Circuit-Board (PCB) transformers - A fundamental concept for signal and energy transfer

    , IEEE Transactions on Power Electronics, Vol: 15, Pages: 931-941, ISSN: 0885-8993

    Magnetic cores have been used in transformers for over a century. In this paper, the authors present a fundamental concept of using "coreless" printed-circuit-board (PCB) transformers. With the aid of a high-frequency equivalent circuit, the use and basic characteristics of coreless PCB transformers are described. Optimal operating conditions for minimum input power requirement and maximum efficiency operations are identified. Coreless PCB transformers have the advantages of low costs, very high power density, no limitation due to magnetic cores, no magnetic loss and ease of manufacturing. They have the potential to be developed in microcircuits. A printed planar PCB transformer with a diameter of about 1.0cm and power capability of 19W has been successfully tested. The power density of the PCB transformer demonstrated in this paper is 24 W/cm 2. The maximum efficiency can be greater than 90%. The analysis has been confirmed with experiments. Coreless printed transformers have great potential in applications in which stringent height and space requirements have to be met. © 2000 IEEE.

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