DK1293A - Method of controlling an electric motor operating a centrifugal pump - Google Patents

Method of controlling an electric motor operating a centrifugal pump

Info

Publication number
DK1293A
DK1293A DK001293A DK1293A DK1293A DK 1293 A DK1293 A DK 1293A DK 001293 A DK001293 A DK 001293A DK 1293 A DK1293 A DK 1293A DK 1293 A DK1293 A DK 1293A
Authority
DK
Denmark
Prior art keywords
motor
controlling
electric motor
centrifugal pump
power
Prior art date
Application number
DK001293A
Other languages
Danish (da)
Other versions
DK1293D0 (en
Inventor
Leif Rasmussen
Original Assignee
Smedegaard As
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DK104192A external-priority patent/DK104192D0/en
Application filed by Smedegaard As filed Critical Smedegaard As
Priority to DK001293A priority Critical patent/DK1293A/en
Publication of DK1293D0 publication Critical patent/DK1293D0/en
Priority to AT93113211T priority patent/ATE155552T1/en
Priority to DE69312183T priority patent/DE69312183T2/en
Priority to EP93113211A priority patent/EP0584713B1/en
Publication of DK1293A publication Critical patent/DK1293A/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

A method for controlling an electric motor (2) driving a centrifugal pump (3) having a diameter ratio D1/D2 less than approximately 1/2 and a varying fluid flow-through (Q), the motor (2) being connected to a supply mains (R,S,T) through a power-control device (1). An electrical measuring signal (I) is produced, being proportional to the current drawn by the motor (2) or by the power-control device (1), and based on the known characteristics of the motor (2) and the pump (3), the electrical measuring signal (I) is processed so as to produce a control signal (f), being used as an input signal to the power-control device (1). The electrical measuring signal (I) is processed in such a manner, that the control signal (f) causes the delivery pressure (H) of the pump (3) to be substantially constant over a large variation interval for the fluid flow-through (Q). <IMAGE>
DK001293A 1992-08-21 1993-01-06 Method of controlling an electric motor operating a centrifugal pump DK1293A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DK001293A DK1293A (en) 1992-08-21 1993-01-06 Method of controlling an electric motor operating a centrifugal pump
AT93113211T ATE155552T1 (en) 1992-08-21 1993-08-18 CONTROL METHOD OF AN ELECTRIC MOTOR FOR DRIVING A CENTRIFUGAL PUMP
DE69312183T DE69312183T2 (en) 1992-08-21 1993-08-18 Control method of an electric motor for driving a centrifugal pump
EP93113211A EP0584713B1 (en) 1992-08-21 1993-08-18 Method of controlling an electric motor driving a centrifugal pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK104192A DK104192D0 (en) 1992-08-21 1992-08-21 PROCEDURE FOR CONTROLING AN ELECTRIC ENGINE DRIVING A CENTRIFUGAL PUMP
DK001293A DK1293A (en) 1992-08-21 1993-01-06 Method of controlling an electric motor operating a centrifugal pump

Publications (2)

Publication Number Publication Date
DK1293D0 DK1293D0 (en) 1993-01-06
DK1293A true DK1293A (en) 1994-02-22

Family

ID=26063115

Family Applications (1)

Application Number Title Priority Date Filing Date
DK001293A DK1293A (en) 1992-08-21 1993-01-06 Method of controlling an electric motor operating a centrifugal pump

Country Status (4)

Country Link
EP (1) EP0584713B1 (en)
AT (1) ATE155552T1 (en)
DE (1) DE69312183T2 (en)
DK (1) DK1293A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673732A (en) * 1995-07-11 1997-10-07 Fe Petro Inc. Variable speed pump-motor assembly for fuel dispensing system
GB2309746B (en) * 1996-02-05 1999-08-18 Nuaire Ltd Fan controller
DE19630384A1 (en) * 1996-07-29 1998-04-23 Becker Kg Gebr Process for controlling or regulating an aggregate and frequency converter
US5883489A (en) * 1996-09-27 1999-03-16 General Electric Company High speed deep well pump for residential use
JP3922760B2 (en) * 1997-04-25 2007-05-30 株式会社荏原製作所 Fluid machinery
DE19931961A1 (en) * 1999-07-12 2001-02-01 Danfoss As Method for controlling a delivery quantity of a pump
FI115322B (en) 2003-09-19 2005-04-15 Vacon Oyj Energy measurement with frequency converter
JP2007162700A (en) * 2007-01-31 2007-06-28 Ebara Corp Pump device
MX2010004368A (en) * 2009-04-21 2010-10-20 Itt Mfg Enterprises Inc Pump controller.
US8425200B2 (en) 2009-04-21 2013-04-23 Xylem IP Holdings LLC. Pump controller
DE102011010218B4 (en) * 2011-02-03 2019-09-12 Robert Bosch Gmbh A method of regulating the pressure of a fluid delivered by a variable speed pump
WO2013068016A1 (en) 2011-11-08 2013-05-16 Wärtsilä Svanehøj A/S Correcting speed of pumps
WO2018200552A1 (en) * 2017-04-24 2018-11-01 Chargepoint, Inc. Liquid cooled charging cable for charging electric vehicles

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2946049A1 (en) * 1979-11-15 1981-05-27 Hoechst Ag, 6000 Frankfurt Circulation pump flow-rate regulation system - measures pump loading and rotation to obtain actual flow-rate
DE3542370C2 (en) * 1985-11-30 2003-06-05 Wilo Gmbh Procedure for regulating the head of a pump
DE3824057A1 (en) * 1988-07-15 1990-01-25 Loewe Pumpenfabrik Gmbh Method for regulating the operation of pumps

Also Published As

Publication number Publication date
ATE155552T1 (en) 1997-08-15
EP0584713A1 (en) 1994-03-02
EP0584713B1 (en) 1997-07-16
DK1293D0 (en) 1993-01-06
DE69312183T2 (en) 1998-01-08
DE69312183D1 (en) 1997-08-21

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Legal Events

Date Code Title Description
A0 Application filed
AHB Application shelved due to non-payment