[go: up one dir, main page]

WO2013013733A1 - Machine électrique - Google Patents

Machine électrique Download PDF

Info

Publication number
WO2013013733A1
WO2013013733A1 PCT/EP2012/002259 EP2012002259W WO2013013733A1 WO 2013013733 A1 WO2013013733 A1 WO 2013013733A1 EP 2012002259 W EP2012002259 W EP 2012002259W WO 2013013733 A1 WO2013013733 A1 WO 2013013733A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
temperature
electrical machine
machine according
optical detection
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.)
Ceased
Application number
PCT/EP2012/002259
Other languages
German (de)
English (en)
Inventor
Andreas Apelsmeier
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.)
Audi AG
Original Assignee
Audi AG
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 Audi AG filed Critical Audi AG
Publication of WO2013013733A1 publication Critical patent/WO2013013733A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • G01K13/04—Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies
    • G01K13/08—Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies in rotary movement
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
    • G01D5/3473—Circular or rotary encoders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/22—Optical devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/25—Devices for sensing temperature, or actuated thereby

Definitions

  • the invention relates to an electric machine, in particular an electric motor, comprising a rotor and a stator.
  • the permanent magnets of the rotor are usually the most temperature-sensitive components, because even a short-term exceeding the Curie temperature of the magnetic material used to damage the magnets, in particular the loss of their magnetization leads.
  • a temperature monitoring of the rotor is appropriate.
  • the detection of the rotor temperature usually takes place in a test bench environment by means of temperature sensors.
  • the determination of the rotor temperature can be carried out using calculation methods, simulation methods, numerical modeling or from the operating variables determined by the electrical machine.
  • the invention is therefore based on the object to provide an electrical machine, with the cost and high accuracy, the detection of the rotor temperature is qualitatively and quantitatively possible.
  • an element arranged on the rotor is provided in an electrical machine of the type whose absorption coefficient for incident photons changes as a function of temperature, and an associated light-optical detection device which determines a measurement signal dependent on the instantaneous absorption coefficient of the element. which represents a measure of the element temperature.
  • the invention is based on the idea that only the detection signal reflected by an arranged element whose absorption coefficient for incident photons changes as a function of the temperature is detected and evaluated by an optical detection device.
  • the reflected light or the detection signal characteristically changes in response to this temperature rise.
  • the light directed to the element originates from at least one light source, the detected, reflected light or signal representing a measure of the element temperature and therefore a measure of the rotor temperature. Since these are optical processes, the temporal resolution can be significantly increased in contrast to the conventional sensors such as temperature sensors.
  • the element used may be a semiconductor element according to a first alternative.
  • the function of the electric machine according to the invention is based on the fact that during operation of an electrical machine heat is generated, whereupon the band gap (energy gap), which indicates the area between the conduction band and the valence band of a relevant, arranged semiconductor element, characteristically changes to temperature increases respectively temperature decreases. As the temperature increases, more and more electrons are raised from the valence band into the conduction band, causing a noticeable change in electrical conductivity.
  • the rotor temperature can thus be determined on the basis of the detection signal reflected by the semiconductor element.
  • thermochromic substance for example inorganic metal oxides or polymer blends, the molecules of which, when the temperature changes, have a specific molecular state characteristic of each material. If an increase in the temperature of the rotor occurs as a result of ongoing operation of the electric machine, the relevant molecules of the thermochromic layer change in such a way that a structural phase transition occurs in certain temperature ranges, which causes a different region of the spectrum to be absorbed. The remaining reflected light or temperature-dependent detection signal is now combined to form a new spectrum, which can be detected by a thermochromic temperature sensor, which also represents a measure of the rotor temperature.
  • a thermochromic temperature sensor which also represents a measure of the rotor temperature.
  • the element is a semiconductor element, wherein semiconductor elements have a band gap in the range of 0 to about 3 eV.
  • the semiconducting materials may consist of elements, compounds and alloys, wherein the element semiconductors are in the IV. Main group of the periodic table, such as C, Si or Ge. Also conceivable are compound semiconductors, to which elements of the III. and V. main group, such as GaAS or InSb. Other semiconductor types are conceivable.
  • the semiconductor element has at least one flat reflection surface, so that a good reflection is given, wherein other surface structures are also conceivable as long as they reflect the light originating from a light source.
  • a particularly good function of the electrical machine results when the semiconductor element is formed as a thin film or as a geometric component, for example in the form of a trapezoid, a pyramid or a prism.
  • the geometry of the semiconductor element is arbitrary and should be at least a portion of the light originating from a light source, e.g. B. from an LED, reflect. Since in the area between a rotor and a stator often only little space, it is expedient to apply the semiconductor element as a thin film on the rotor.
  • the layer can be applied by conventional processes, such as known from semiconductor technology, by means of a carrier material, such as a plastic adhesive tape, and thus arranged on the rotor.
  • the element is a temperature-sensitive coating, preferably a thermochromic polymer film, which is applied to the outer periphery of a portion of a rotor.
  • a thermochromic polymer film which is applied to the outer periphery of a portion of a rotor.
  • the inorganic metal oxides include, for example, zinc oxide, vanadium oxide or copper oxide, to the polymer blends, for example, polypropylene oxide.
  • these materials can be attached to the rotor with an adhesive bond.
  • thermochromic acting properties have been available on the market for a long time, which are available in powder or liquid form and can also be used. These can be applied to a rotor by brushing or rolling.
  • a temperature-sensitive layer it is also expedient for a temperature-sensitive layer to have a reflecting surface, so that the light originating from a light source can be reflected and detected by an optical detection device.
  • the semiconductor element or the temperature-sensitive coating can be arranged on the outer circumference of a rotor and / or on the rotor end face. Due to constructive conditions, the semiconductor element or the temperature-sensitive coating is preferably arranged on the outer circumference, so that with this arrangement of the semiconductor element or the temperature-sensitive coating, an illumination by means of a light source is well implemented.
  • the semiconductor element or the temperature-sensitive coating can also be arranged on the rotor end face. However, this only appears to be expedient in exceptional cases, since generally the rotor end face is arranged in a rotor housing and thus this is difficult to access for the light source and the light originating therefrom.
  • any distributions of the semiconductor elements or of the temperature-sensitive coatings on the first and / or second region of the rotor of the electric machine are possible. Furthermore, it is thus conceivable to use the detection signals originating from the two light sources as reference values in order to carry out a plausibility check relating to a rotor temperature.
  • two semiconductor elements or two temperature-sensitive coatings are arranged opposite to the outer circumference of the rotor and / or opposite to the rotor end face.
  • semiconductor elements are each offset by 90 ° to the outer circumference of the rotor and / or arranged on the rotor end face.
  • other angular ranges for example, 45 °, 30 °, etc., conceivable.
  • one of the detection of the rotational position of the rotor is formed by means of the light-optical detection device structuring.
  • the structuring has reflective surfaces, it being possible to conclude with the reflected light modulated by the structuring or the detection signals to a rotor position.
  • the structuring replaces digital, optical incremental encoders, which are currently used for detecting a rotor position.
  • the structuring on resolvers, which take up a large amount of space, are complex to manufacture and the EMC requirements (electromagnetic compatibility) only partially meet, also be waived.
  • the structuring for example, with depressions and elevations be formed, this z. For example, equidistant angles to one another.
  • the structuring and the semiconductor element or the temperature-sensitive coating are arranged in the same area of the rotor illuminated by the light source. Accordingly, it is expedient that a region of the rotor in which the structuring and the semiconductor element or the temperature-sensitive coating are arranged is illuminated. Due to this, the structuring and the semiconductor element or the temperature-sensitive coating pass through the light cone with each revolution of the rotor. The irradiation can be done, for example, stationary or pulsed.
  • the invention relates to a motor vehicle, comprising an electric machine comprising a rotor and a stator and an optical detection device with at least one light source of the type described above, wherein depending on the determined by the optical detection means, dependent on the instantaneous absorption of the element measurement signal, a rotor temperature and of the modulated by the structuring detection signal, a rotor position can be determined by the optical detection means. For example, a precise knowledge of the rotor position for the operation of an electric motor of crucial importance to start a motor without the addition of an auxiliary motor can.
  • Detecting the rotor temperature is useful in terms of damage to an electric machine because a user of the vehicle can turn off the machine before it overloads and incurs the associated damage such as damage to units, bearings or, in the worst case, destruction of the electrical machine.
  • the evaluation of the detected signals can be visually or visually displayed via a display device, for example a display, which is common in motor vehicles, in order to warn a user of an excessively high rotor temperature, so that the latter can react appropriately.
  • the advantage of this embodiment is that the light source and the optical detection device can be arbitrarily removed from the rotor, whereby the available space of the electric machine can be optimally utilized.
  • the optical detection device has a memory unit for the readable storage of data.
  • the storing of the detected and evaluated detection signals i. H. the data such as date, speed, operating condition, rotor temperature, etc. on a suitable disk, such.
  • a hard disk drive or flash memory devices On a hard disk drive or flash memory devices.
  • the archiving of the data can be stored in an area previously specially partitioned for this purpose in the data carrier and, for example, used in service checks of electrical machines as a data record for a diagnosis / evaluation.
  • Figure 1 is a schematic diagram of an electrical according to the invention
  • FIG. 2 is a schematic diagram of an electrical according to the invention
  • FIG. 3 is a schematic diagram of an electrical according to the invention
  • Figure 4 is a schematic diagram of an electrical according to the invention.
  • FIG. 1 shows a schematic representation of an inventive electrical machine 1, wherein the individual components of the electric machine 1 such as housing, stator, etc. are not shown for clarity.
  • the electric machine 1 comprises a rotor 2, wherein the rotor 2 performs a rotational movement about a stationary axis 2a, as indicated by the rotation arrow D.
  • On the outer circumference of the rotor 2 are two opposite semiconductor elements 3, which are formed in the illustrated embodiment as prisms arranged.
  • a variation of the number of semiconductor elements 3 is possible, so that, for example, each offset to 90 ° semiconductor elements 3 are provided, as shown in dashed lines in Fig. 1.
  • a connection with the semiconductor elements 3 on the outer circumference of the rotor 2 can be achieved for example by working methods such as gluing, welding or soldering. Due to a temperature-induced change of a reflected detection signal 7 from the arranged on the rotor 2 semiconductor elements 3, it can be concluded that the current rotor temperature. This characteristic change of the detection signal 7 can be related to the Varshni formula and the Debye model. Thus, the rotor temperature can be determined wear-free and contactless.
  • a structuring 4 is applied on the outer circumference of the rotor 2, which has depressions and elevations here, wherein they have equidistant angles to one another.
  • the structuring 4 can be applied to the rotor 2 via conventional processes, for example by means of a carrier material in the form of a plastic adhesive tape.
  • the plastic adhesive tape has a structuring 4 of the type mentioned above.
  • the optical detection device 5 here formed, for example, with a spectral sensor 6, is used to detect a temperature-related change. tion of a reflected detection signal 7 from the semiconductor elements 3 arranged on the rotor 2 as well as for detection of the same, but due to the structuring 4 modulated detection signal 7, the detection of the temperature-induced signal change is a measure of the current rotor temperature and the detection of the modulation of the detection signal. 7 represents a measure of the rotor position.
  • the reflected light or detection signal 7 originates from a light source 8, which is here generated by an LED and irradiates the rotor.
  • the LED is arranged with respect to the semiconductor elements 3 or the structuring 4 in such a way that they are arranged in the same area 2b of the rotor 2 illuminated by the LED.
  • the light source 8 can illuminate the area 2b stationary or pulsed. Accordingly, the area 2b of the rotor in which the semiconductor elements 3 and the pattern 4 are arranged is illuminated, and the reflected light or detection signal 7, which changes depending on the rotor temperature or the semiconductor temperature as well as the rotor rotation, of the optical detection means 5 recorded.
  • the spectral sensor 6 and the optical detection device 5 may be realized in a single component, whereby space can be saved.
  • FIG. 2 shows a schematic diagram of an inventive electrical machine 1 according to FIG. 1, however, the optical detection device 5 detects the temperature-related change of a detection signal 7 with respect to a semiconductor element 3 which is arranged on the rotor end face 2c of the rotor 2 as well as a rotor position by means of a the structuring 4 applied to the rotor end surface 2c, the same laws apply as in Figure 1.
  • the modulation of the detection signal 7 is also a measure of the rotor position here
  • the detection of the reflected light from the semiconductor element 3 and the temperature-dependent Detection signal is a measure of the rotor temperature.
  • FIG. 2 in contrast to FIG.
  • FIG. 1 shows an optical detection device 5 with a sensor arranged therein, for example a spectral sensor 6 and a separate light source 8 separately from the optical detection device 5.
  • a respective light guide 9 is guided from the light source 8 and the optical detection device 5 to the rotor 2 arranged remotely. This alignment of the light guides 9 must be such that the semiconductor elements 3 and the structuring 4 are irradiated and the respective reflected light can be detected with the light guide 9 facing the optical detection device 5.
  • the structuring 4 can be arranged on the outer surface of the rotor 2 and the semiconductor elements 3 on the rotor end face 2c and vice versa.
  • the semiconductor element 3 and the structuring 4 can be arranged on the rotor end face 2c as well as on the outer circumference of the rotor 2.
  • FIG. 3 shows a schematic representation of an electrical machine 1 according to the invention of a third embodiment, wherein instead of a semiconductor element 3, a temperature-sensitive coating 10, here for example a thermochromic polymer film, on the outer circumference of a region 2b of the rotor 2, is irradiated by a light source 8, is applied. Also with respect to a rotor position determination in the same area 2b of the rotor 2, a structuring 4 is arranged, which is as described in Figures 1 and 2, formed.
  • a temperature-sensitive coating 10 here for example a thermochromic polymer film
  • the optical detection device 5 here exemplarily consisting of a thermochromic temperature sensor 11, serves to detect a temperature-induced spectral change of the light originating from the light source 8 as well as to detect the modulated light 4 due to the structuring light or detection signal 7, wherein the spectral change is a measure of the rotor temperature and the modulated detection signal 7 represents a measure of the rotor position.
  • the optical detection device tion 5 may be connected to a memory unit 12, which allows the storage of readable data, and this also applies to the other embodiments of Figures 1, 2 and 4 applies.
  • the storage and archiving of the detected detection signals 7 such as rotor temperature and rotor position as well as the storage and archiving of the detection information, ie the additional stored data, such.
  • the memory unit 12 may have an optical interface 14, such as a TOSLINK optical port, which allows communication in the form of image output on an external device 15, such as a monitor.
  • FIG. 4 shows a schematic illustration of an electrical machine 1 according to the invention in a fourth embodiment, which is essentially constructed like the electrical machine 1 in FIGS. 1-3, wherein two pairs of optical fibers 9a and 9b each consisting of two separate optical fibers 9 are provided are.
  • the light guides 9 are formed here, for example, as a glass conductor. As shown in the embodiment, a respective light guide 9 of the light guide pair 9a is guided by the light source 8 and the optical detection device 5 onto the outer periphery of the remotely located rotor 2 formed with two semiconductor elements 3 and a pattern 4.
  • a light guide 9 of the second light guide pair 9b is guided by the light source 8 and the optical detection device 5 onto the rotor end face 2c, which is likewise formed with two semiconductor elements 3 and a structuring 4.
  • the detection signals originating from the two supplied light guides 9 of the respective light guide pairs 9a and 9b as reference values in order to carry out a plausibility check.
  • the light originating from the light source 8 through the respective light guide 9 of the light guide pair 9a and 9b is connected to the respective associated light guide 9 of the light guide pair 9a and 9b ⁇ must be arranged so that the reflected light or detection signal 7 can be detected.
  • a rotor position of the rotor 2 is determined by another measured variable, for example by means of a changing depending on the rotor position machine inductance, only a temperature-sensitive coating 10 or at least one semiconductor element 3 to the rotor 2 to order, thus a rotor temperature of the rotor 2 to determine.
  • the selbigen conditions and variations apply, as they have already been described in the above figures 1-4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

L'invention concerne une machine électrique (1), notamment un moteur électrique, comportant un rotor (2) et un stator, au moins un élément étant disposé sur le rotor (2), le degré d'absorption de photons incidents de cet élément variant en fonction de la température. La machine électrique comporte un dispositif de détection photo-optique affecté (5) déterminant un signal de mesure (7) dépendant du degré d'absorption instantané de l'élément, constituant une grandeur pour la température de l'élément.
PCT/EP2012/002259 2011-07-22 2012-05-26 Machine électrique Ceased WO2013013733A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011108382.4 2011-07-22
DE102011108382A DE102011108382A1 (de) 2011-07-22 2011-07-22 Elektrische Maschine

Publications (1)

Publication Number Publication Date
WO2013013733A1 true WO2013013733A1 (fr) 2013-01-31

Family

ID=46207960

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/002259 Ceased WO2013013733A1 (fr) 2011-07-22 2012-05-26 Machine électrique

Country Status (2)

Country Link
DE (1) DE102011108382A1 (fr)
WO (1) WO2013013733A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108521198A (zh) * 2018-04-28 2018-09-11 北京动力源科技股份有限公司 一种检测电机定子温度的方法、系统和电机
CN112888923A (zh) * 2018-12-18 2021-06-01 依必安派特穆尔芬根有限两合公司 具有热致变色部件的电动马达
CN113394920A (zh) * 2021-06-24 2021-09-14 上海卓荃电子科技有限公司 一种电机转子测温系统、智能控温式电机

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109769407B (zh) 2016-08-16 2022-04-15 罗伯特·博世有限公司 用于估计电动机中转子位置的光学传感器和方法、及包括光学传感器的电动机
DE102018212940A1 (de) 2018-08-02 2020-02-06 E.G.O. Elektro-Gerätebau GmbH Verfahren zur Bestimmung einer Temperatur eines umlaufenden Teils und Wäschetrockner
DE102020202077A1 (de) 2020-02-19 2021-08-19 Technische Hochschule Nürnberg Georg Simon Ohm Verfahren und Vorrichtung zur berührungslosen Erfassung der Temperatur von einem Rotationsteil einer elektrischen Maschine
DE102020202074A1 (de) 2020-02-19 2021-08-19 Technische Hochschule Nürnberg Georg Simon Ohm Verfahren und Vorrichtung zur berührungslosen Erfassung der Temperatur von einem Rotationsteil einer elektrischen Maschine
AT524986B1 (de) * 2021-04-23 2025-01-15 Avl List Gmbh Messanordnung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006530A1 (fr) * 1978-06-26 1980-01-09 Asea Ab Capteur de température à fibres optiques
US4789992A (en) * 1985-10-15 1988-12-06 Luxtron Corporation Optical temperature measurement techniques
DE3803597A1 (de) * 1988-02-06 1989-08-31 Bosch Gmbh Robert Kombinierter drehzahl/temperatur-messwertaufnehmer
JPH0581283A (ja) * 1991-09-20 1993-04-02 Tokyo Electric Co Ltd 車両管理装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818922A (en) * 1986-10-22 1989-04-04 Allied-Signal Inc. Optical commutation for permanent magnet motors
DE3820903A1 (de) * 1988-06-21 1990-01-04 Heidelberger Druckmasch Ag Elektrische maschine
JPH0531403A (ja) * 1991-07-31 1993-02-09 Hitachi Koki Co Ltd 遠心分離機ロータの温度検出法
JP2010035265A (ja) * 2008-07-25 2010-02-12 Meidensha Corp 電動機のロータ温度測定装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006530A1 (fr) * 1978-06-26 1980-01-09 Asea Ab Capteur de température à fibres optiques
US4789992A (en) * 1985-10-15 1988-12-06 Luxtron Corporation Optical temperature measurement techniques
DE3803597A1 (de) * 1988-02-06 1989-08-31 Bosch Gmbh Robert Kombinierter drehzahl/temperatur-messwertaufnehmer
JPH0581283A (ja) * 1991-09-20 1993-04-02 Tokyo Electric Co Ltd 車両管理装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108521198A (zh) * 2018-04-28 2018-09-11 北京动力源科技股份有限公司 一种检测电机定子温度的方法、系统和电机
CN112888923A (zh) * 2018-12-18 2021-06-01 依必安派特穆尔芬根有限两合公司 具有热致变色部件的电动马达
CN113394920A (zh) * 2021-06-24 2021-09-14 上海卓荃电子科技有限公司 一种电机转子测温系统、智能控温式电机

Also Published As

Publication number Publication date
DE102011108382A1 (de) 2013-01-24

Similar Documents

Publication Publication Date Title
WO2013013733A1 (fr) Machine électrique
EP3411667B1 (fr) Procédé de calibration d'un codeur rotatif et codeur rotatif pour déterminer une position angulaire corrigée
DE10243219B4 (de) Vorrichtung und Verfahren zum Detektieren eines verschlechterten Dauermagnets
DE112013006990B4 (de) Encoder und Servomotor
EP3014373B1 (fr) Système d'estimation de la durée de vie d'un moteur électrique
WO1996027116A1 (fr) Procede et dispositif de mesure angulaire pour corps rotatifs
WO2000034746A1 (fr) Dispositif et procede pour la mesure de la position angulaire d'un corps rotatif
DE102008051083A1 (de) Multiturn-Drehgeber
DE3821083A1 (de) Drehmomenterfassungsgeraet
DE102016115624A1 (de) Verfahren zum Kalibrieren eines Drehgebers und Drehgeber
DE212013000102U1 (de) Magnetvorrichtung und Lageerfassungssystem
WO2014000869A1 (fr) Disposition pour déterminer un nombre de révolutions d'un arbre logé de manière à pouvoir tourner et procédé pour la détermination d'un nombre de révolutions d'un arbre logé de manière pouvoir tourner
EP1510787B2 (fr) Procédé et capteur angulaire de mesure de la position angulaire absolue
WO2018028739A1 (fr) Procédé de réglage interdépendant d'un dispositif de détection magnétique et d'un actionneur et disposition d'actionnement muni d'un actionneur et un dispositif de détection magnétique
WO2017162232A1 (fr) Procédé de fixation ajustée d'un système de capteur magnétique sur un actionneur et actionneur muni d'un moteur électrique et d'un système de capteur magnétique
DE19527588C2 (de) Verfahren zum Prüfen von Zählern mit Anzeigen
DE102013021181A1 (de) Drehmomentsensor
DE102011109551A1 (de) Messsystem zur Positionsbestimmung eines gegenüber einem Referenzkörper verschiebbaren oder verdrehbaren Körpers mit einem magnetischen Encoder
EP3839442B1 (fr) Dispositif et procédé de correction destinés au calcul automatique de valeurs de correction pour valeurs mesurées d'angle d'un capteur de rotation ainsi que capteur de rotation
EP2469239B1 (fr) Dispositif de mesure d'angle multi-tours
DE202010012659U1 (de) Überlastkupplung mit einer Vorrichtung zur Ermittlung ihres Rutschwinkels
DE102014113493A1 (de) Flurförderzeug mit einem Lenkwinkelsensor
DE102004045348B3 (de) Verfahren zur Ermittlung der Drehmomentkonstante kM von permanentmagnetisch erregten Gleichstommotoren
EP4107499B1 (fr) Procédé et dispositif de détection sans contact de la température d'une partie rotative d'une machine électrique
DE102008062849A1 (de) Messvorrichtung mit Piezoelement

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12725310

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 12725310

Country of ref document: EP

Kind code of ref document: A1