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  • Book
    Kirschen D, Strbac G, 2004,

    Fundamentals of Power System Economics
  • Journal article
    Chaudhuri B, Majumder R, Pal BC, 2004,

    Application of multiple-model adaptive control strategy for robust damping of interarea oscillations in power system

    , IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, Vol: 12, Pages: 727-736, ISSN: 1063-6536
  • Journal article
    Yip SC, Chung HSH, Hui SYR, Chiu YCet al., 2004,

    Modeling, analysis and design of a thyristor-based BI-directional ac-dc converter

    , Journal of Circuits, Systems and Computers, Vol: 13, Pages: 687-705, ISSN: 0218-1266

    This paper presents the modeling, analysis, and design of a thyristor-based ac-dc converter, featuring bi-directional power flow and unity power factor at the ac side in both powering and regenerating modes. By applying the y-parameter modeling technique and eliminating the effects of the high-frequency poles and zeros, small-signal models of the converter in both modes and a unified controller have been developed. The controller regulates the voltage at the dc side and operates as a. feedback controller in the powering mode and a feedforward controller in the regenerating mode. Systematic procedures for determining the circuit component values of the power conversion stage and the controller are presented. The operation is illustrated with the design of a 500-W, 100-V (ac)/200-V (dc) prototype, supplying to a motor-generator set. Experimental results showing operation in the powering mode, regenerating mode, and during mode changeover are included. Circuit operations during the transient of the changeover operation are clearly identified. © World Scientific Publishing Company.
  • Journal article
    Vinter RB, Clark JMC, James MR, 2004,

    The Interpretation of Discontinuous State Feedback Control Laws as Non-Anticipative Control Strategies in Differential Games

    , IEEE Transactions Automatic Control, Vol: 49, Pages: 1360-1365
  • Journal article
    Lovera M, Astolfi A, 2004,

    Spacecraft attitude control using magnetic actuators

    , AUTOMATICA, Vol: 40, Pages: 1405-1414, ISSN: 0005-1098
  • Journal article
    Zhang XD, Parisini T, Polycarpou MM, 2004,

    Adaptive fault-tolerant control of nonlinear uncertain systems: An information-based diagnostic approach

    , IEEE TRANSACTIONS ON AUTOMATIC CONTROL, Vol: 49, Pages: 1259-1274, ISSN: 0018-9286
  • Journal article
    Angeli D, Sontag ED, De Leenheer P, 2004,

    A small-gain theorem for almost global convergence of monotone systems

    , Systems and Control Letters, Vol: 52, Pages: 407-414, ISSN: 0167-6911
  • Conference paper
    Rakovic SV, Kerrigan EC, Mayne DQ, 2004,

    Optimal control of constrained piecewise affine systems with state- and input-dependent disturbances
  • Journal article
    Yates DC, Holmes AS, Burdett AJ, 2004,

    Optimal transmission frequency for ultralow-power short-range radio links

    , IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, Vol: 51, Pages: 1405-1413, ISSN: 1549-8328
  • Journal article
    Angeli D, Ingalls B, Sontag ED, Wang Yet al., 2004,

    Uniform global asymptotic stability of differential inclusions

    , JOURNAL OF DYNAMICAL AND CONTROL SYSTEMS, Vol: 10, Pages: 391-412, ISSN: 1079-2724
  • Book chapter
    Clark JMC, Vinter RB, 2004,

    On the interpretation of non-anticipative control strategies in differential games and applications to flow control

    , Optimal control, stabilization and nonsmooth analysis, Editors: De Queiroz, Malisoff, Wolenski, Berlin, Publisher: Springer, Pages: 29-48, ISBN: 9783540213307
  • Journal article
    Angeli D, 2004,

    An almost global notion of input-to-state stability

    , IEEE Trans. on Automatic Control, Vol: 49, Pages: 866-874, ISSN: 0018-9286
  • Journal article
    Mitcheson PD, Green TC, Yeatman EM, Holmes ASet al., 2004,

    Architectures for vibration-driven micropower generators

    , JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, Vol: 13, Pages: 429-440, ISSN: 1057-7157
  • Journal article
    Lee STS, Chung HSH, Hui SYR, 2004,

    A novel electrode power profiler for dimmable ballasts using dc link voltage and switching frequency controls

    , IEEE Transactions on Power Electronics, Vol: 19, Pages: 847-853, ISSN: 0885-8993

    A novel electrode power profiler for dimmable ballasts using series-resonant parallel-loaded inverter is presented. Dimming of the fluorescent lamp is primarily based on reducing the dc link voltage. Variations of the electrode power (due to the decrease in the lamp current) during dimming is compensated by changing the switching frequency of the inverter, so that the resonant tank circuit current is also varied. The current gradient along the electrode, which is due to the distributed lamp current property on the electrode, is deliberated in formulating the power and voltage models of the electrode. As the electrode heating relies on two near-orthogonal current components including the lamp current and the resonant tank circuit current, a simple feedback control is developed to derive the electrode power and program the electrode power. Experimental results of a T8 36 W prototype are verified with theoretical predictions.
  • Journal article
    Cao X, Yan W, Hui SYR, Chung HSHet al., 2004,

    Dimming control and characteristics of high-frequency operated metal halide lamps

    , IEEE Transactions on Power Electronics, Vol: 19, Pages: 854-861, ISSN: 0885-8993

    Dimming control and characteristics of high-frequency operated metal-halide (MH) lamps are described. Lamp performance based on two ballast topologies is compared. The dimming range and stability control of the MH lamps are addressed. Dimming range from 100% to about 30% has been achieved. It is found that the combination of ballast topology and dimming method can affect the dimming performance.
  • Journal article
    Allwright JC, Manolescu C, 2004,

    Stability assessment for linear time-varying discrete-time systems using orthogonal Lyapunov transformations

    , IEE PROCEEDINGS-CONTROL THEORY AND APPLICATIONS, Vol: 151, Pages: 259-263, ISSN: 1350-2379
  • Journal article
    Berovic DP, Vinter RB, 2004,

    The application of dynamic programming to optimal inventory control

    , IEEE T AUTOMAT CONTR, Vol: 49, Pages: 676-685, ISSN: 0018-9286

    This paper concerns a class of deterministic impulse control problems, arising in inventory control. A notable feature of the problem formulation is the presence of an end-point constraint. In consequence, the value function may be discontinuous. Viability theory provides a characterization of the value function as the unique lower semicontinuous solution to a Bensoussan-Lions type quasi-variational inequality (QVI), suitably interpreted for nondifferentiable, extended valued functions. Yet there are few examples in the literature of the use of this analytical machinery. This paper provides such an example. The example, which concerns a problem for which the value function is neither everywhere finite valued nor continuously differentiable on the interior of its effective domain, illustrates what is involved in calculating subdifferentials and checking satisfaction of QVI (in a generalized sense). This paper also provides a summary of the underlying theory, and gathers in the Appendix proofs of key results.
  • Journal article
    Tse KK, Ho BMT, Chung HSH, Hui SYRet al., 2004,

    A comparative study of maximum-power-point trackers for photovoltaic panels using switching-frequency modulation scheme

    , IEEE Transactions on Industrial Electronics, Vol: 51, Pages: 410-418, ISSN: 0278-0046

    A comparative study of the maximum power point trackers using a switching-frequency modulation scheme (SFMS) for photovoltaic panels is presented. Some commonly used dc/dc converters, which are applied for the power conversion stage of those trackers, wili be examined. Method of locating the maximum power point (MPP) is based on injecting a small-signal sinusoidal perturbation into the switching frequency of the converter and comparing the ac component and the average value of the panel's terminal voltage. Apart from not requiring sophisticated computation of the panel power, this SFMS does not approximate the panel characteristics and can globally locate the MPP under wide insolation conditions. Tracking capability of the converters under investigation will be compared, using a 10-W solar panel with a controlled experimental setup. Theoretical predictions will be verified with experimental results. Operating characteristics at steady state and in large-signal change of the insolation (incident solar radiation) level will be studied.
  • Conference paper
    Galbraith GN, Vinter RB, 2004,

    Regularity of optimal controls for state constrained problems

    , Meeting on Variational Analysis and Applications held at the 1st AMS-UMI Joint Meeting, Publisher: SPRINGER, Pages: 305-317, ISSN: 0925-5001
  • Journal article
    Kerrigan EC, Maciejowski JM, 2004,

    Feedback min-max model predictive control using a single linear program: robust stability and the explicit solution

    , INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL, Vol: 14, Pages: 395-413, ISSN: 1049-8923
  • Journal article
    Weiss G, Zhong QC, Green TC, Liang Jet al., 2004,

    Erratum: H<sup>∞</sup> repetitive control of DC-AC converters in microgrids (IEEE Trans. Power Electron. (2004) 19, (219-230) DOI: 10.1109/TPEL.2004.825831)

    , IEEE Transactions on Power Electronics, Vol: 19, ISSN: 0885-8993
  • Conference paper
    Miao P, Holmes AS, Yeatman EM, Green TC, Mitcheson PDet al., 2004,

    Micro-machined variable capacitors for power generation

    , Bristol, 11th international conference on electrostatics, Heriot Watt Univ, Edinburgh, Scotland, 23 - 27 March 2003, Publisher: Iop Publishing Ltd, Pages: 53-58
  • Journal article
    Angeli D, Mosca E, 2004,

    Adaptive switching supervisory control of nonlinear systems with no prior knowledge of noise bounds

    , Automatica, Vol: 40, Pages: 449-457, ISSN: 0005-1098
  • Journal article
    Casavola A, Angeli D, Mosca E, 2004,

    Global regulation of input-saturated discrete-time linear systems subject to persistent disturbances

    , European Journal of Control, Vol: 10, Pages: 228-236
  • Journal article
    Angeli D, Sontag ED, 2004,

    Multi-stability in monotone input/output systems

    , Systems & Control Letters, Vol: 51, Pages: 185-202, ISSN: 0167-6911
  • Journal article
    Weiss G, Zhong QC, Green TC, 2004,

    <i>H</i><SUP>∞</SUP> repetitive control of dc-ac converters in microgrids (vol 19, pg 219, 2004)

    , IEEE TRANSACTIONS ON POWER ELECTRONICS, Vol: 19, Pages: 567-567, ISSN: 0885-8993
  • Patent
    Green TC, Mansir H, Prodanovic M, 2004,

    Distributed control method

    , US2004037095US2004037095
  • Journal article
    Chaudhuri B, Pal BC, 2004,

    Robust damping of multiple swing modes employing global stabilizing signals with a TCSC

    , IEEE TRANSACTIONS ON POWER SYSTEMS, Vol: 19, Pages: 499-506, ISSN: 0885-8950
  • Conference paper
    Astolfi A, Bolzern P, Locatelli A, 2004,

    Path-tracking of a tractor-trailer vehicle along rectilinear and circular paths: A Lyapunov-based approach

    , 6th European Control Conference (ECC 01), Publisher: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, Pages: 154-160, ISSN: 1042-296X
  • Journal article
    Angeli D, Sontag ED, Ferrell J, 2004,

    Detection of multistability, bifurcations, and hysteresis in a large class of biological positive feedback systems

    , Proceedings of the National Academy of Sciences, U.S.A, Vol: 101, Pages: 1822-1827, ISSN: 0027-8424

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