Method and arrangement for operating a pump

(57) A method of operating a pump system, the pump system including a pump arranged to be rotated with an AC motor, an inverter, the output of which is electrically connected to the AC motor and a photovoltaic panel system electrically connected to feed DC power to an inverter. The method includes s...

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Bibliographische Detailangaben
Hauptverfasser:	RAJ, RAHUL, SYED, AHMED, SHENOY, LAXMIKANTHA, PATANGE, CHETAN, PANDEY, DEEPAK, LAMMI, MIKKO, RN, SATYAN
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROL OR REGULATION THEREOF CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	(57) A method of operating a pump system, the pump system including a pump arranged to be rotated with an AC motor, an inverter, the output of which is electrically connected to the AC motor and a photovoltaic panel system electrically connected to feed DC power to an inverter. The method includes setting a voltage limit (Vboost), determining continuously voltage obtained from the photovoltaic panel system, when the determined voltage of the photovoltaic panel system is below the set voltage limit, controlling the output frequency of the inverter such that the ratio between output voltage of the inverter and the output frequency is substantially constant, and when the determined voltage of the photovoltaic panel system exceeds the voltage limit (Vboost), controlling the output frequency of the inverter for keeping the voltage of the photovoltaic panel system substantially at the voltage limit. (Figure 1) aABB02100filed12Sept2014 PV Panel Inverter Motor Pump Voltage / --- --- V S 1 leS2 liim Frequency / Hz