WO2006029608A1 - Procede pour detecter un dysfonctionnement de la courroie trapezoidale - Google Patents

Procede pour detecter un dysfonctionnement de la courroie trapezoidale Download PDF

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Publication number
WO2006029608A1
WO2006029608A1 PCT/DE2005/001619 DE2005001619W WO2006029608A1 WO 2006029608 A1 WO2006029608 A1 WO 2006029608A1 DE 2005001619 W DE2005001619 W DE 2005001619W WO 2006029608 A1 WO2006029608 A1 WO 2006029608A1
Authority
WO
WIPO (PCT)
Prior art keywords
current
belt
rotor
heat exchanger
rotary heat
Prior art date
Application number
PCT/DE2005/001619
Other languages
German (de)
English (en)
Inventor
Karl-Ernst Vathauer
Michael Sperber
Original Assignee
Msf Technik Vathauer Gmbh & Co. Kg
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
Application filed by Msf Technik Vathauer Gmbh & Co. Kg filed Critical Msf Technik Vathauer Gmbh & Co. Kg
Priority to DE112005002809T priority Critical patent/DE112005002809A5/de
Publication of WO2006029608A1 publication Critical patent/WO2006029608A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/02—Gearings; Transmission mechanisms
    • G01M13/023—Power-transmitting endless elements, e.g. belts or chains

Definitions

  • the invention relates to a method for a V-belt malfunction detection such as a V-belt crack, a V-belt skid, a rotor blockage or the like in inverter-driven asynchronous motors for driving rotary heat exchangers.
  • Output shaft takes place and from there further on a wedge or toothed belt, a chain or the like rotating, belt-like drive elements on the rotor of the rotary heat exchanger whose maximum diameter is regularly looped around for a further speed reduction of, for example, the V-belt.
  • Rotary heat exchanger for the drive in conjunction with the said gear ratios is no significant, additional burden.
  • the rotation of the rotor sensors are therefore generally used, which are also known and proven in various embodiments.
  • Inductive, capacitive and magnetic systems are used, which all have in common that they must be cabled to a central control station. Accordingly, the monitoring is uncertain, since in case of cable break, failure of one or more sensors u.a. the feedback from the rotary heat exchanger to a central station can be faulty and thus not sure.
  • the object of the invention is to provide a method for such a malfunction detection that, without an immediate monitoring, for example by sensors, enables the rotation of the rotor of a rotary heat exchanger to be detected.
  • the method according to the invention makes use of the fact that the speed of an asynchronous motor with increasing load up to the vicinity of the overturning moment, the maximum torque that can reach a nominal frequency and rated voltage operated alternator with slow increase in load, initially only very little decreases. It is therefore in an idle case, synonymous with a detached or cracked V-belt, the asynchronous motor start up at a start to its setpoint speed without reaching or exceeding the overturning moment. The motor is operated very far in the field weakening range, in which the power consumption is very low.
  • the error detection can be improved if after determining that the V-belt does not transmit forces to the rotor, the test sequence is repeated immediately below and the error message is issued after a second detection of the error. It can be held on the test parameters or, if desired, these can be varied again.
  • the monitoring of whether the overturning moment is achieved or not is expediently carried out by a current measurements, which preferably takes place with high accuracy on a shunt resistor, wherein the measurement of two phases will normally be sufficient from which two measurements then the current of the third phase is calculated.
  • the current to be given in the test sequence under test parameters will also depend to a great extent on these.
  • a typical value is half of the rated current.
  • the Blockadestromwert is empirical, as typical plant to determine.
  • Asynchronous motor which drives a rotor of a rotary heat exchanger via a transmission and a V-belt, achieved by a control that makes a periodic Umparametritation the inverter for starting the induction motor, and by a measuring device for measuring the current absorbed by the asynchronous motor, by an evaluation device , which concludes from the measurement of the current on the overturning moment and determines whether the belt transmits no forces to the rotor, unless the overturning moment is reached or exceeded, or determines whether the rotor of the rotary heat exchanger is driven by the V-belt, if the overturning moment exceeded becomes. It is further provided that the measuring device measures the current of two phases and that the evaluation device calculates the current of the third phase.
  • Figure 1 the control of an asynchronous motor
  • FIG. 2 a flow chart of a preferred test sequence.
  • the actual power supply of an asynchronous motor 1 takes place in one or three phases from a network 2 via a filter module 3 and a mains choke 4 towards a charging circuit 5.
  • a rectifier 6 is supplied i.a. the voltage for a switching power supply 7 for the power supply of the entire periphery.
  • a parameterizable converter 8 then controls the asynchronous motor 1 via a filter 9, which essentially corresponds to the conventional operation of an asynchronous motor 1.
  • a current measurement by means of a measuring device 10 in particular only two phases. If appropriate, a third phase can be calculated by an evaluation device 11 from the current measurement of the other two phases.
  • the current measurement itself is preferably carried out on a shunt resistor, a shunt, and can be highly accurate.
  • the measured value detection or evaluation device 11 is connected to a motor and application controller 12 in connection, is periodically parameterized by the inverter 8 for a start of the asynchronous motor 1 via a modulation 13 and driver stage 14, so that the asynchronous motor 1 makes a start under load.
  • this or the engine and application controller 12 can recognize as an evaluation device, whether at the start of the V-belt no longer transfers forces to the rotor, in which it is determined that the overturning moment is not reached or exceeded , If this overturning moment is exceeded, it is clear that the rotor of the rotary heat exchanger continues to be correctly driven via the V-belt.
  • the starting point is a normal operating state 17.
  • the engine speed is down-regulated, preferably until engine standstill 18.
  • Umparametri für 19 follows the test parameters and a test start 20 under these test parameters.
  • a setpoint speed occurs with or without reaching or exceeding the overturning moment, for example by a current query 21. If it is determined that a predetermined current value, for example half of the rated current, is not reached or exceeded, a repetition 22 occurs this test sequence causes. The engine is stopped again and the test parameters are set, which can be the same or changed.
  • a new test start 26 is carried out to a predetermined, defined speed. If this speed is reached, another current query 27, whether a blockade current is exceeded or fallen below. If this is not the case, the engine speed is reduced again, preferably until engine standstill 28 and is then returned to the normal operating state 17. If the blockade current is exceeded, an error message 29 occurs that the rotor is blocked.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

L'invention concerne un procédé pour détecter un dysfonctionnement de la courroie trapézoïdale sur un moteur asynchrone (1), commandé par un convertisseur selon des paramètres standard et destiné à entraîner un échangeur de chaleur rotatif. Ce procédé consiste à reparamétrer périodiquement des paramètres d'essai du convertisseur (8) pour un démarrage du moteur asynchrone (1) à une vitesse de consigne, à surveiller le moment de renversement et à vérifier que la courroie trapézoïdale ne transmet aucune force au rotor, si ce moment de renversement n'est pas atteint, ou à vérifier que le rotor de l'échangeur de chaleur rotatif est entraîné par la courroie trapézoïdale, si ce moment de renversement est dépassé.
PCT/DE2005/001619 2004-09-17 2005-09-15 Procede pour detecter un dysfonctionnement de la courroie trapezoidale WO2006029608A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112005002809T DE112005002809A5 (de) 2004-09-17 2005-09-15 Verfahren für eine Keilriemenfehlfunktionserkennung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410045570 DE102004045570A1 (de) 2004-09-17 2004-09-17 Verfahren für eine Keilriemenfehlfunktionserkennung
DE102004045570.8 2004-09-17

Publications (1)

Publication Number Publication Date
WO2006029608A1 true WO2006029608A1 (fr) 2006-03-23

Family

ID=35500837

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2005/001619 WO2006029608A1 (fr) 2004-09-17 2005-09-15 Procede pour detecter un dysfonctionnement de la courroie trapezoidale

Country Status (2)

Country Link
DE (2) DE102004045570A1 (fr)
WO (1) WO2006029608A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102520354A (zh) * 2011-12-19 2012-06-27 湖南工业大学 一种基于labview平台的异步电机测试系统
EP3376665A1 (fr) * 2017-03-14 2018-09-19 OJ Electronics A/S Détecteur de courroie d'entraînement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106405292A (zh) * 2016-09-30 2017-02-15 许继集团有限公司 一种风机变桨驱动器自动测试系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2058367A1 (de) * 1970-11-27 1972-06-08 Mueller Arnold Elektromasch Induktionsmotor mit einer Anordnung zur Drehzahlverstellung
EP0621680A1 (fr) * 1993-04-17 1994-10-26 Licentia Patent-Verwaltungs-GmbH Méthode pour la limitation du couple en démarrage d'un moteur asynchrone triphasé
US20040168844A1 (en) * 2001-03-09 2004-09-02 Goran Goransson Method and apparatus for monitoring a transmission part

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2058367A1 (de) * 1970-11-27 1972-06-08 Mueller Arnold Elektromasch Induktionsmotor mit einer Anordnung zur Drehzahlverstellung
EP0621680A1 (fr) * 1993-04-17 1994-10-26 Licentia Patent-Verwaltungs-GmbH Méthode pour la limitation du couple en démarrage d'un moteur asynchrone triphasé
US20040168844A1 (en) * 2001-03-09 2004-09-02 Goran Goransson Method and apparatus for monitoring a transmission part

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102520354A (zh) * 2011-12-19 2012-06-27 湖南工业大学 一种基于labview平台的异步电机测试系统
EP3376665A1 (fr) * 2017-03-14 2018-09-19 OJ Electronics A/S Détecteur de courroie d'entraînement

Also Published As

Publication number Publication date
DE102004045570A1 (de) 2006-03-23
DE112005002809A5 (de) 2007-08-30

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