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IEE Proceedings - Electric Power Applications

Issue 1 • Date Jan. 1994

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Displaying Results 1 - 5 of 5
  • Analytic approach to magnetic circuit for saturated axial-field induction machines

    Publication Year: 1994, Page(s):27 - 32
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (444 KB)

    Performance analysis for saturated axial-field induction machines is rather complicated due to their disc-shaped geometry and the saturation effect. A three-dimensional field computation is generally too expensive to predict their performance with engineering accuracy. To obtain the axial-field distribution in the disc-shaped planar airgap, a distributed magnetic circuit model, composed of a set o... View full abstract»

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  • Single-phase step-up/down current-source rectifier with suppressed resonance

    Publication Year: 1994, Page(s):19 - 25
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (289 KB)

    The paper presents a novel single-phase, single-way, current-source rectifier. This is based on the cascade combination of a diode bridge rectifier and a current-source Cuk power convertor. The supply current can be sinusoidally waveshaped with suppressed resonance by an appropriate switching strategy, whereas a parallel inductance-capacitance circuit of a conventional form excites the resonant fr... View full abstract»

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  • Advance calculation of the characteristic quantities of synchronous machines and comparison with measured values

    Publication Year: 1994, Page(s):13 - 18
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (524 KB)

    A method is presented for the advance calculation of the characteristic quantities of synchronous machines. The method is based on the determination of the frequency response x/sub d/(js), x/sub q/(js) from primary equivalent circuits with an approximate consideration of the solid rotor part in accordance with the machine geometry. The procedure is explained using a turbogenerator as a practical e... View full abstract»

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  • Eddy current losses of permanent magnet motors

    Publication Year: 1994, Page(s):7 - 11
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (382 KB)

    A simple and effective method for calculating the core eddy current losses in permanent magnet motors is presented. It uses the back EMF per tooth induced in the stator windings by the rotation of the permanent magnets. The eddy current losses of the stator yoke can also be evaluated as a function of the back EMF per tooth waveform. Simple expressions are obtained for motors with an even number of... View full abstract»

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  • Robust low-cost implementation of vector control for reluctance synchronous machines

    Publication Year: 1994, Page(s):1 - 6
    Cited by:  Papers (11)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (372 KB)

    The paper presents an implementation of a low-cost robust digital-analogue (hybrid) speed (and position) vector controller for cageless-rotor reluctance synchronous motors. Separate control of i/sub d/ and i/sub s/ is performed with i/sub d/* (reference value) constant up to the base speed and reducing gradually above the base speed. On the other hand, i/sub q/* (reference value) is set by a slidi... View full abstract»

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