Before and during voltage sags |
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Authors: | Carlsson F |
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Affiliation: | KTH, Stockholm, Sweden; |
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Abstract: | The relationship between the voltages and the tripping level for line-operated synchronous machines is discussed. Voltage sags may cause tripping and large torque peaks in electrical machines. Tripping is caused by undervoltage protection or overcurrent protection. The ability to keep synchronism for the synchronous machines is mostly related to the loading of the machine and not very related to the voltage before and after the voltage sag. |
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