SYSTEM TO CONTROL SUBMERGED ELECTRICALLY DRIVEN CENTRIFUGAL PUMP Russian patent published in 2009 - IPC F04D15/00 F04D13/10 

FIELD: engines and pumps.

SUBSTANCE: proposed system comprises unit 1 designed to set up dynamic level of fluid, aperiodic filters 2 and 3, fluid level pickup 4, pi-regulator 5, frequency transducer 6 with its output connected to submerged electrically driven centrifugal pump 7. Output of unit 1 is connected to input of first filter 2. Output of the latter is connected to input of first filter 2. Output of aforesaid filter is connected to first input of pi-regulator 5. Output of pickup 4 is connected to input of second filter 3. Output of the latter is connected to second input of pi-regulator 5. Output of the latter is connected with input of frequency transducer 6.

EFFECT: simplified system, higher reliability.

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