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Electric Power Applications, IEE Proceedings B

Issue 3 • Date May 1984

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Displaying Results 1 - 6 of 6
  • Track-recording techniques used on British Rail

    Publication Year: 1984 , Page(s): 73 - 81
    Click to expandAbstract | PDF file iconPDF (1395 KB)  

    Accurate and consistent data on railway-track quality is required from which track-maintenance action can be scheduled. In recent years two recording vehicles have been designed by British Rail: a high-speed track-recording coach (HSTRC) to provide maintenance data for the Civil Engineering Department, and a self-propelled diesel multiple unit used by the Research and Development Division for inve... View full abstract»

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  • Influence of motor design and feed-current waveform on torque ripple in brushless DC drives

    Publication Year: 1984 , Page(s): 82 - 90
    Cited by:  Papers (11)
    Click to expandAbstract | PDF file iconPDF (984 KB)  

    A general relation for the instantaneous torque developed by a convertor-fed synchronous motor for known phase current waveform and the field flux distribution is formulated. The influence of these quantities, together with other parameters such as phase number, on torque ripple is discussed with the aid of tabulated predictions for a number of typical cases. Techniques for the achievement of low ... View full abstract»

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  • Response improvements in industrial DC drives derived from optimal analysis

    Publication Year: 1984 , Page(s): 91 - 98
    Cited by:  Papers (2)
    Click to expandAbstract | PDF file iconPDF (862 KB)  

    A computer-based solution of the equations arising from the application of optimal control theory to a wide-speed-range DC drive reveals the manner in which the control should operate to achieve minimum error-squared performance. An examination of simulated conventional spillover schemes confirms that these are least able to approach the optimal performance in the spillover field-weakening control... View full abstract»

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  • Novel two-phase inverter-fed induction-motor drive

    Publication Year: 1984
    Cited by:  Papers (7)
    Click to expandAbstract | PDF file iconPDF (645 KB)  

    A novel two-phase inverter-fed induction-motor drive for essentially constant-speed operation is described, and an example of a 30 W drive is used to demonstrate its performance characteristics and to provide experimental results. The performances of the 30 W motor with two-phase sine wave and inverter supplies are compared, and the speed variation of the inverter drive caused by a supply voltage ... View full abstract»

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  • Evaluation and comparison of two types of induction-motor drives

    Publication Year: 1984 , Page(s): 105 - 112
    Click to expandAbstract | PDF file iconPDF (1023 KB)  

    The evaluation of steady-state performance and the design methods for variable-speed inverter-fed induction-motor drives suitable for different industrial applications are complex. The nonlinear variation of the drive-system performance indices with frequency and filter parameters, the presence of special performance indices such as pulsating harmonic-torque components, the depletion of breakdown ... View full abstract»

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  • Steady-state performance of current-fed pulse-width-modulated inverter drives

    Publication Year: 1984 , Page(s): 113 - 132
    Click to expandAbstract | PDF file iconPDF (2734 KB)  

    The increasing availability of powerful low-cost microcomputer and graphics facilities should, in the future, allow interactive computer-aided design (CAD) to play an increasingly cost-effective role in the design of variable-speed drives (VSD). In recognition of these developments this paper describes the detailed development of a steady-state current-fed PWM VSD CAD package which offers the desi... View full abstract»

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