H - Electricity – 02 – H
Patent
H - Electricity
02
H
318/49
H02H 7/08 (2006.01) H02P 1/46 (2006.01) H02P 25/02 (2006.01)
Patent
CA 1199673
IMPROVED BRUSHLESS EXCITER ABSTRACT OF THE DISCLOSURE An improved brushless exciter for use with a variable speed synchronous motor which operates from a variable frequency source to run over a wide range of speeds, has a three phase brushless exciter stator winding connected wye. A first series of switches connects each phase of the stator winding to a respective phase of a fixed frequency source of AC power. A second series of switches connects two of the phases of the stator winding in series to a source of DC power. The same stator winding is used for an AC feed and a DC feed. A switch control switches the first and second series of switches between open and closed positions and has an interlock which permits only one series of switches to be closed at any one time.
422858
Herzog Gordon W.
Sobiski Wayne L.
Canadian General Electric Company Limited
Eckersley Raymond A.
LandOfFree
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