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Siemens Brothers Dynamo Works Ltd
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Siemens Brothers Dynamo Works Ltd
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Publication of GB190706715ApublicationCriticalpatent/GB190706715A/en
6715. Siemens Bros. Dynamo Works, [Siemens-Schuckertwerke Ges.]. March 20. Dynamos, regulating ; field magnets.-In dynamoelectric machines having a main shunt field winding n, and a series winding w which may be the existing winding of auxiliary commutating poles, the voltage of the machine is rapidly reduced to zero when the shunt winding n is disconnected from the exciting-circuit s<1>, s<2> by so connecting it to the machine that its excitation opposes the residual excitation of the machine. A separate equivalent winding may take the place of the shunt winding n for neutralizing the self - excitation. Instead of connecting the shunt or equivalent winding across the main terminals of the machine, it may be connected across the series winding w.
GB190706715D1907-03-201907-03-20Improvements in or relating to Dynamo Electric Machines, and to Means for Controlling the same.
ExpiredGB190706715A
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