EP2102617A1 - Procédé et dispositif pour mesurer la température d'exploitation d'un moteur de commande - Google Patents

Procédé et dispositif pour mesurer la température d'exploitation d'un moteur de commande

Info

Publication number
EP2102617A1
EP2102617A1 EP07822722A EP07822722A EP2102617A1 EP 2102617 A1 EP2102617 A1 EP 2102617A1 EP 07822722 A EP07822722 A EP 07822722A EP 07822722 A EP07822722 A EP 07822722A EP 2102617 A1 EP2102617 A1 EP 2102617A1
Authority
EP
European Patent Office
Prior art keywords
winding
tachogenerator
operating temperature
measuring
drive motor
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP07822722A
Other languages
German (de)
English (en)
Inventor
Hasan Gökcer ALBAYRAK
Lothar Knopp
Thomas Ludenia
Jörg SKRIPPEK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2102617A1 publication Critical patent/EP2102617A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/60—Controlling or determining the temperature of the motor or of the drive
    • H02P29/64—Controlling or determining the temperature of the winding
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/60—Controlling or determining the temperature of the motor or of the drive
    • H02P29/67—Controlling or determining the motor temperature by back electromotive force [back-EMF] evaluation

Definitions

  • the invention relates to a method for measuring the operating temperature of a drive motor, in particular a three-phase motor as a drive for a laundry treatment machine, which is fed via an operating and speed control, using the determination of the operating temperature proportional winding resistance and a comparison of the winding resistance in Cold state and in operating condition. Furthermore, the invention relates to a device for carrying out the method.
  • WO 02/087050 A1 teaches by means of measurements of electrical operating variables to the Windings of the motor to calculate the resistance of the windings and to close about the temperature costs of the winding material (copper) to the current temperature.
  • the absolute temperature fluctuations are so low that, with a justifiable electronic outlay, the measurement accuracy leaves something to be desired. With an increase in the measurement accuracy due to increased electronic complexity but also the susceptibility is higher, so that the measured values in turn can not be sufficiently reliable.
  • the invention has for its object to come in a method described above with less effort to more accurate and reliable readings.
  • this object is achieved in that the speed control of a rotatably connected to the motor and physically connected tachogenerator and that of values of the winding resistance of the tachogenerator, which are calculated taking into account measured electrical operating variables, the height of the operating temperature of the engine is derived ,
  • tachogenerators are anyway required and customary for speed control. Since the winding of the tachogenerator, on the one hand, has intimate thermal contact with the motor winding generating the current heat and, moreover, has a considerably higher ohmic resistance than the motor winding, a reaction is as fast as in the prior art, but much more accurate and reliable due to the temperature values obtained according to the invention. In addition, the electronic effort is lower and contains fewer failure hazards.
  • the a concrete representation of the measuring device is simplified by this embodiment of the invention in a hard to beat way.
  • another embodiment of the method according to the invention again increases the accuracy of the measurement results in that during the measurement operation of the tachogenerator from a frequency signal of the tachogenerator fundamental and harmonics are isolated from each other, and that of shaft portions generated from a self-resonance determined by the winding resistance be determined, the impedance of the winding of the tachometer generator.
  • the inventive method according to one of these variants if the operation and speed control is supplied with the derived temperature values and measures are taken to reduce the drive power due to a comparison of these temperature values with predetermined value levels, advantageously be further developed.
  • This makes it possible for the first time to adapt the drive power for the laundry drum of a laundry treatment machine in a very fine-grained way of the current load.
  • the operating and speed control when reaching different temperature levels different values for the duty cycle described above can be prescribed.
  • This makes it possible to differentiated approach the maximum load capacity of the drive motor used in comparison with certain parameters of the treatment programs and even taking into account the ambient temperature and - if necessary and probably only with immediate errors of the drive motor - totally off and to protect the engine so.
  • the motor can be dimensioned smaller using the invention, even at this page is still saving effort.
  • Fig. 1 shows an arrangement of a block diagram for the determination of the current resistance value of the tachogenerator winding by StrorrWSpannungsteil and
  • Fig. 2 shows another variant in the block diagram for determining the current resonant frequency of the tachogenerator winding due to a harmonic evaluation of the generated current oscillations.
  • the block diagrams show only schematically the symbol for the winding of the tachogenerator 1, which is thermally and mechanically intimately coupled with the winding of the drive motor, not shown.
  • the tachogenerator performs the same rotational movements as the shaft of the drive motor and its winding has the same temperature as the winding of the drive motor.
  • the tachogenerator 1 is supplied with a constant current via a switch 2, which connects it via its output 21 at the measuring times with the voltage source 3.
  • the switch 2 in the circuit of Fig. 1 by the operation and speed control 4, which contains a microprocessor, respectively triggered (line 41).
  • the tachogenerator in the drawn switch position via its input 22 constantly speed-dependent frequency signals to the signal processing 5, which forms processable signals for the speed control 4. These signals are then compared with comparison values in the speed control 4 and used to correct the engine speed.
  • the winding of the tachogenerator 1 is supplied with the stable current from the voltage source 3 and measured simultaneously by a voltmeter 6.
  • the measured voltage across the winding of the tachogenerator 1 is a measure of how large the resistance of the winding is, which deviates from its cold resistance value according to the heated in operation coil. From this voltage and the known voltage in the cold state arises in the operating and speed control 4 a comparison variable, which is compared with the control of predetermined brands.
  • Fig. 2 is closed by measuring the natural resonance of the tachogenerator winding 1 to the temperature equivalent.
  • a high-frequency generator 7 is used, the frequency-determining resonant circuit is completed by the winding of the tachometer generator 1 as inductance.
  • the high-frequency generator 7 is then periodically excited to oscillate by the operating and speed control 4, so that in the excited state, a signal is generated with an oscillation frequency determined by the temperature-dependent impedance of the winding of the tachogenerator 1.
  • This signal is output to a signal processor 8.
  • the signal processing 8 contains a band-pass filter whose cut-off frequencies comprise all possible oscillation frequencies of the high-frequency generator 7.
  • the signal processing 8 then a signal corresponding to the detected frequency signal to the operation and speed control 4, where in a comparable manner as in Fig. 1, a comparison is made, which is compared with predetermined brands.
  • the relatively low-frequency tachometer signals which are obtained from the measured speed, passed directly to the signal processing 9, which has a low-pass filter. This will the only these low-frequency measurement signals - processed accordingly - forwarded to the operation and speed control 4.
  • the associated motor temperature can be calculated via approximation equations or tables.
  • the engine is then always operated in such a way that the maximum permissible operating temperature is just not reached.
  • the associated measure is triggered. For example, when reaching a mark that corresponds to the engine temperature value of 100 0 C, the duty cycle is set to 80%. When higher temperature values are reached, the switch-on duration is lowered accordingly. In this way, the drive motor is controlled with an optimum power profile.
  • the maximum permissible operating temperature is exceeded, the motor is finally switched off. It can however be put back into operation after cooling down.
  • the controller 4 can thus - in a sense anticipatory - always control the engine in its permissible operating temperature according to the standard.
  • the engine no longer for a worst case operation (largest load, maximum ambient temperature, longest program with maximum water level, maximum unbalance, all cumulated) are designed, which may never be reached in the course of its service life.
  • An engine controlled according to the invention no longer becomes too warm and then shut down in normal operation when unfavorable operating conditions occur, but it is switched back in stages to lower switch-on durations, so that it will never reach too high an operating temperature. A total shutdown of the engine can therefore occur practically only in case of a fault on the engine.
  • a laundry treating machine can be equipped with a compact unit of motor, tachogenerator and electronic control, there is no need to cumbersome to find a program that is most difficult for the engine to assign to the engine its uniform duty cycle. Since the controller has the permissible switch-on If they have determined themselves, they can, as it were, be self-employed in situ.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

L'invention concerne un procédé de mesure pour la température d'exploitation en particulier de mécanisme d'entraînement d'une machine de traitement de linge, qui repose sur la mesure de la résistance d'enroulement du moteur, qui est proportionnelle à la température d'exploitation, ainsi que sur une comparaison des résistances d'enroulement, à froid et en service. Le procédé selon l'invention prend en compte la température d'exploitation de l'enroulement, sans grande complexité technique et permet d'obtenir des valeurs mesurées plus précises et plus fiables qu'avec les procédés connus. A cet effet, la commande de vitesse (4) est assurée par une génératrice tachymétrique (1) solidarisée physiquement et bloquée en rotation avec le moteur et la valeur de la température d'exploitation du moteur est dérivée des valeurs de la résistance d'enroulement de la génératrice tachymétrique (1), qui ont été déterminées compte tenu de grandeurs d'exploitation électriques mesurées (courant, tension, fréquence).
EP07822722A 2006-12-19 2007-11-20 Procédé et dispositif pour mesurer la température d'exploitation d'un moteur de commande Withdrawn EP2102617A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006060034A DE102006060034A1 (de) 2006-12-19 2006-12-19 Verfahren und Vorrichtung zum Messen der Betriebstemperatur eines Antriebsmotors
PCT/EP2007/062543 WO2008074580A1 (fr) 2006-12-19 2007-11-20 Procédé et dispositif pour mesurer la température d'exploitation d'un moteur de commande

Publications (1)

Publication Number Publication Date
EP2102617A1 true EP2102617A1 (fr) 2009-09-23

Family

ID=39200052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07822722A Withdrawn EP2102617A1 (fr) 2006-12-19 2007-11-20 Procédé et dispositif pour mesurer la température d'exploitation d'un moteur de commande

Country Status (5)

Country Link
EP (1) EP2102617A1 (fr)
CN (1) CN101568815B (fr)
DE (1) DE102006060034A1 (fr)
RU (1) RU2400716C1 (fr)
WO (1) WO2008074580A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008037157A1 (de) * 2008-08-08 2010-02-11 Oerlikon Textile Gmbh & Co. Kg Verfahren zum Betreiben einer Rotorspinnmaschine
DE102010063950A1 (de) 2010-12-22 2012-06-28 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät mit einem Antriebsmotor und Verfahren zum Betreiben eines solchen Haushaltsgerät
CN102213623A (zh) * 2011-04-11 2011-10-12 黑龙江省电力科学研究院 汽轮发电机水冷绕组内部水循环系统检验方法
DE102015106051A1 (de) * 2015-04-21 2016-10-27 Miele & Cie. Kg Verfahren zum Betreiben einer Waschmaschine und Waschmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083001A (en) * 1976-12-29 1978-04-04 Westinghouse Electric Corporation Measurement of motor winding temperature
DE3706659A1 (de) * 1987-03-02 1988-09-15 Heidelberger Druckmasch Ag Einrichtung zum erfassen der wicklungstemperatur eines insbesondere buerstenlosen gleichstrommotors
CN1011072B (zh) * 1988-12-05 1991-01-02 沈阳市产品质量监督检验所 电器温升自动检测装置
DE59006628D1 (de) * 1990-05-18 1994-09-01 Siemens Ag Überlastungsschutz für die Wicklung eines durch eine Drehzahlerfassungsvorrichtung überwachten DC-Reihenschlussmotors.
EP0478807B1 (fr) * 1990-09-28 1994-11-30 Siemens Aktiengesellschaft Machine à laver avec surveillance de la température du moteur
DE19743046C1 (de) * 1997-09-29 1999-04-29 Siemens Ag Verfahren und Vorrichtung zum Erfassen der Betriebstemperatur von Motoren
DE10040080A1 (de) * 2000-08-16 2002-03-21 Pierburg Ag Motorschutzfunktion
DE10119201A1 (de) * 2001-04-19 2002-10-24 Bsh Bosch Siemens Hausgeraete Verfahren und Vorrichtung zum Messen der Wicklungstemperatur eines Antriebsmotors
DE102004050898B4 (de) * 2004-10-19 2007-04-12 Siemens Ag Verfahren und Einrichtung zur Überwachung einer Temperatur eines Lagers einer rotierend umlaufenden Welle
US7694538B2 (en) * 2005-02-14 2010-04-13 Emerson Electric Co. Device and method for sensing temperature of a rotating electromagnetic machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008074580A1 *

Also Published As

Publication number Publication date
RU2400716C1 (ru) 2010-09-27
CN101568815B (zh) 2011-06-29
DE102006060034A1 (de) 2008-06-26
CN101568815A (zh) 2009-10-28
WO2008074580A1 (fr) 2008-06-26

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