Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1992-07-09
1993-08-31
Wysocki, Jonathan
Electricity: motive power systems
Induction motor systems
Primary circuit control
318809, H02P 500
Patent
active
052412547
ABSTRACT:
Control circuit for semiconductor components of a converter circuit which can be switched on and off to convert direct current into three-phase current. The converter circuit is connected between a direct-current source and the stator of a synchronous machine having a cylindrical rotor. The control circuit measures rotor position and the direct current and determines from the obtained signals the value of the commutation angle .mu. of the phase current i in the converter at any value of the direct current I.sub.d on the basis of a model of the synchronous machine which solely takes account of the fundamental harmonic of the phase current i, the firing angle .alpha. of the semiconductor components being set between limits determined for any value of the direct current I.sub.d by the associated commutation angle .mu..
REFERENCES:
patent: 3609509 (1971-09-01), Lafuze
patent: 4443747 (1984-04-01), Chausse et al.
patent: 4449087 (1984-05-01), Lippitt et al.
patent: 4495451 (1985-01-01), Barnard
patent: 4539514 (1985-09-01), Espelage et al.
IECEC-89 vol. 6, Aug. 11, 1989, Washington, D.C., U.S. pp. 2897-2902; L. J. J. Offringa et al: `New Developments in Power Electronics for the Flywheel System Emafer`.
IECEC-87 1987, pp. 1197-1201; F. J. M. Thoolen: `Electro Mechanical Energy Accumulator for Energy Reuse. A New Concept of an Energy-Storage Device`.
IEE-Forth Int. Conf. on Power Electronics and Variable-Speed Drives Jul. 19, 1990, London, UK pp. 190-195; M. F. Benkhoris et al: `Modelling and Simulation of a Synchronous Motor Supplied by a GTO Voltage Inverter`.
Offringa Lodewijk J. J.
Smits Eugenio J. F. M.
CCM Beheer B.V.
Wysocki Jonathan
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