Centrifugal pump assembly

The assembly has a control device controlling speed of an electric driving motor. The control device includes a frequency converter, is designed such that a weakened field is increased by the speed of the driving motor, and is generated in a control range (S3). The driving motor is provided with a p...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	AARESTRUP, JAN CAROEE, RASMUSSEN, KELD FOLSACH
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION HEATING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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Beschreibung
Zusammenfassung:	The assembly has a control device controlling speed of an electric driving motor. The control device includes a frequency converter, is designed such that a weakened field is increased by the speed of the driving motor, and is generated in a control range (S3). The driving motor is provided with a permanent magnetic-rotor. The control device is designed such that the weakened field is generated, and a load angle of power is increased above 90 degree compared to a magnetic field of rotor, so that current and an induced counter voltage (E) does not exceed in a phase.