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IEE Proceedings B - Electric Power Applications

Issue 3 • May 1988

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Displaying Results 1 - 8 of 8
  • Automatic controls in building services

    Publication Year: 1988, Page(s):105 - 133
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2945 KB)

    The authors cover the range and applications of the automatic control systems for HVAC now available, with a review of the state of the art, and some predictions as to the likely direction in future. The aim of the authors is to provide an insight into existing and future control systems. The intention is to enable electrical engineers to better co-ordinate their activities with their mechanical a... View full abstract»

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  • Dublin Area Rapid Transit

    Publication Year: 1988, Page(s):134 - 150
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1652 KB)

    The authors describe the principal elements of the Dublin Area Rapid Transit (DART) system, together with details of project management during the construction phase, and operating experience since the service was introduced in 1984. DART is a modern electrified transit system that runs on a 36 km double line route through Dublin. The system uses the latest developments in signalling, traffic cont... View full abstract»

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  • Effective approximations suitable for the control algorithm of microprocessor-based cycloconvertor

    Publication Year: 1988, Page(s):159 - 164
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (601 KB)

    Two approximation methods for simplifying the control algorithm of cycloconvertor control are obtained from studies in a phase plane called a 'time process chart'. One is a simple straight line approximation, in which only arithmetic operations are involved, and in the use of trigonometric or inverse trigonometric functions which can be avoided. The other is also a straight line approximation, but... View full abstract»

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  • Automatic controls in building services

    Publication Year: 1988, Page(s):105 - 133
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (3701 KB)

    Until recently, the term ¿controls¿ was confined, in building services, to the thermostatic devices associated with the heating, ventilating and air conditioning (HVAC) systems. Nowadays, the definition is generally considered as encompassing the motor starter and control panels, energy management and building automation systems, lighting controls and, at least, the interfacing with fire, securi... View full abstract»

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  • Dublin Area Rapid Transit

    Publication Year: 1988, Page(s):134 - 150
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2045 KB)

    The paper describes the principal elements of the Dublin Area Rapid Transit (DART), together with details of project management during the construction phase, and operating experience since the service was introduced in 1984. The DART is a modern electrified transit system that runs on a 36 km double line route through Dublin. The system uses the latest developments in signalling, traffic control,... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Scalar control: an alternative AC drive philosophy

    Publication Year: 1988, Page(s):151 - 158
    Cited by:  Papers (9)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1024 KB)

    A new control philosophy for inverter driven induction motors causes the airgap flux to vary over a wide range in proportion to load-induced changes in the scalar magnitude of the machine current. A controller based on this principle outputs a constant slip frequency at high efficiency under all useful operating conditions. It is stable with good damping factors and good response times, yet it req... View full abstract»

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  • Effective approximations suitable for the control algorithm of microprocessor-based cycloconvertor

    Publication Year: 1988, Page(s):159 - 164
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (749 KB)

    Two approximation methods for simplifying the control algorithm of cycloconvertor control are obtained from studies in a phase plane called a `time process chart¿. One is a simple straight line approximation, in which only arithmetic operations are involved, and one can avoid the use of trigonometric or inverse trigonometric functions. The other is also a straightline approximation, but some func... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Scalar control: an alternative AC drive philosophy

    Publication Year: 1988, Page(s):151 - 158
    Cited by:  Papers (9)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (704 KB)

    A new control philosophy for inverter driven induction motors causes the airgap flux to vary over a wide range in proportion to load-induced changes in the scalar magnitude of the machine current. A controller based on this principle outputs a constant slip frequency at high efficiency under all useful operating conditions. It is stable with good damping factors and good response times, yet it req... View full abstract»

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