Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1998-02-11
1999-08-24
Ro, Bentsu
Electricity: motive power systems
Induction motor systems
Primary circuit control
318430, 318493, H02P 126
Patent
active
059428759
ABSTRACT:
A method and a device for operating an asynchronous machine include controlling the rotor and the stator of the machine during start-up with respective first and second direct converter units. After the start-up the second direct converter unit is isolated from the stator and is connected to the rotor in parallel with the first direct converter unit. Therefore, direct converter units which are already available for performing a mains operation are used during start-up.
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"Statische Frequenzumrichter fur drehzahlregelbare Maschinensatze in Wasserkraftanlagen" (static frequency converters for adjustable speed sets, Otto Warneke, Siemens AG, published in International Water Power and DAM Construction, Jun. 1995.
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"Elektrische Maschinen" (Electrical Machines), Rudolf Richter, Verlag Birkhauser, Basel, Stuttgart, 1954, pp. 1-348.
Greenberg Laurence A.
Lerner Herbert L.
Ro Bentsu
Siemens Aktiengesellschaft
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