EP3571749A1 - Winding temperature monitoring - Google Patents
Winding temperature monitoringInfo
- Publication number
- EP3571749A1 EP3571749A1 EP18701135.8A EP18701135A EP3571749A1 EP 3571749 A1 EP3571749 A1 EP 3571749A1 EP 18701135 A EP18701135 A EP 18701135A EP 3571749 A1 EP3571749 A1 EP 3571749A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- sensor
- arrangement
- winding
- stator
- 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.)
- Pending
Links
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/72—Side-walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
- B60C13/001—Decorating, marking or the like
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/30—Organic material
- B23K2103/42—Plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/72—Side-walls
- B29D2030/728—Decorating or marking the sidewalls after tyre vulcanization
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H6/00—Emergency protective circuit arrangements responsive to undesired changes from normal non-electric working conditions using simulators of the apparatus being protected, e.g. using thermal images
Definitions
- the invention relates to an arrangement for monitoring the winding temperature of a motor, as well as a motor which is formed with such a temperature monitoring arrangement.
- an electric motor with a rotor and a stator with a winding package is known and with a temperature measuring device for detecting the temperature or temperature change of the winding package.
- the temperature measuring device has a bifilar temperature sensor which extends at least in sections on the circumference of the winding package.
- a device for monitoring the temperature of an electric motor is known.
- a signal processing generates a corrected temperature signal, which is used to monitor the electric motor for thermal overload, in response to an output signal of a temperature sensor arranged in the vicinity of the electric motor.
- the signal processing also generates the corrected temperature signal in response to a past output of the temperature sensor.
- stators of an electrical machine are known, with electrical coils and with a temperature sensor for detecting the temperature at one of the electric coils, wherein the temperature sensor is provided in the region between two coils on a sensor carrier and a sensor element and at least one connected to the sensor element Sensor cable includes.
- the disadvantage is that the sensor element of the temperature sensor is not securely contacted with the coils.
- the temperature measurement is improved by the sensor carrier having a spring element which presses the sensor element against one of the coils.
- the current drawn by the electric motor is monitored. If the motor current exceeds the permissible continuous current for a longer period of time, the motor is switched off via the motor-protective circuit-breaker or in the case of variable-speed three-phase motors via the frequency inverter.
- thermoswitches are inserted in the winding before the press-fitting process and the connecting leads are connected to a printed circuit board. If the temperature determined in this way reaches a predetermined, maximum permissible limit value in the vicinity of the motor winding, the electric motor is also switched off here.
- a signal processing is provided which generates a corrected temperature signal as a function of the output signal and of at least one output signal of the temperature sensor lying in the past.
- thermocouple or sensor in the winding results in a high assembly cost and the need for an early shutdown of the engine in case of failure due to a large temperature difference between the affected winding and the circuit board, which in turn leads to a load problem of the engine due to low utilization , - -
- the basic idea of the invention is to detect the temperature not at the winding but at a position spaced apart from the winding and to provide corresponding sensor mounting spaces in order to carry out an indirect temperature measurement.
- a space for accommodating or integrating a temperature sensing element can be provided according to the invention on or in the stator.
- the detected temperature outside the winding inside is corrected via a correction element with evaluation electronics to the temperature value in the windings.
- an arrangement for the indirect detection of the winding temperature of the windings or tooth windings (concentrated winding / single tooth winding) of an electric motor which is designed with a stator packet comprising at least one sensor mounting space within the stator core, the respective sensor mounting space being offset from the windings of the motor.
- Detet is arranged and for detecting the respective local temperature TL with at least one temperature sensor, which is arranged in a sensor space and a correction member for determining the winding temperature Tw from the respective detected by a temperature sensor local temperature TL and a correction value KL.
- the respective correction element or the correction value KL can be defined as a factor, as an equation or as a measured set of curves.
- the senor or the sensor spaces as a recess (s), bore (s) or punched (s) are provided in the stator.
- Temperature sensors are already taken into account in the punching of the stator laminated core, which causes no additional costs and thus enables cost-effective implementation.
- At least one sensor mounting space is arranged in the packet yoke of the stator core.
- At least one sensor mounting space is arranged in the packet tooth of the stator packet.
- At least one sensor mounting space in the plastic shaft of the stator is arranged, preferably in a longitudinal groove in the plastic shaft with a depth to the stator.
- an evaluation electronics is provided, which is connected to the or the temperature sensors and is designed to calculate the temperature of the windings from the local measured temperature.
- correction value KL in the correction element is adjustable or manually changeable.
- the correction value KL in the correction element is adjustable or manually changeable.
- the real measured variable is fed to the evaluation electronics. This corrects with the correction term the outer indirect temperature value to the winding temperature value.
- the actual temperature value can also be compared with a desired value. Exceeds e.g. the actual value is the setpoint, the electronics switches the motor winding de-energized via switching elements.
- a further aspect of the present invention relates to a method for indirectly detecting the winding temperature of the windings or tooth windings of an electric motor with an arrangement as described above with the following - -
- the method is designed so that at least one temperature gradient ATL is detected at the location of a temperature sensor and the correction factor is automatically adjusted as a function of the temperature gradient ATL.
- the evaluation electronics are each further supplied with a desired value specification for one or more of the windings or is / are stored in a nominal value memory and this is compared individually with the calculated actual temperature Tw of the windings, wherein a shutdown device is activated as soon as a calculated actual temperature Tw of one of the windings exceeds a defined desired value.
- Another aspect of the present invention relates to an electric motor having an arrangement as described above for indirectly detecting the winding temperature of the windings of the electric motor.
- FIG. 1 shows a partial sectional view through a stator of an electric motor with a temperature monitoring device according to the invention
- FIG. 1 shows a partial sectional view through an arrangement 1 with a stator core 4 of an electric motor 3 (see also the illustration of FIG. 3) for the indirect detection of the winding temperature of the tooth windings 2 of the electric motor 3.
- a sensor mounting space 5 is arranged merely by way of example in the plastic shaft 6 of the stator core 4.
- the sensor areas 5 are not all in the immediate vicinity of the windings 2. Rather, each sensor space 5 is arranged at a distance from the windings 2 of the motor 3.
- a temperature sensor 10 is arranged in each case in the sensor areas 5.
- the sensor spaces 5 in the stator 4 are formed in this embodiment as a punched.
- FIG. 3 shows a schematic representation of an arrangement 1 according to the invention.
- a correction element 20 is also provided.
- the winding temperature Tw can be calculated from the respective detected by a temperature sensor 10 local temperature TL.
- Different (individually adjustable) correction values KL can also be stored for the different sensor positions.
- the winding temperature Tw of a specific winding is determined from the superimposed values of two or more of the sensors 10 by dividing the determined temperatures and / or temperature gradients into contributions from the respective temperature sensor 10, which are determined from the absolutely measured localization.
- the temperature gradient over time can be determined in addition to the temperature TL at a specific point in time, as shown in FIG.
- the temperature rises much faster than in the lower curve (b).
- a setpoint specification for one or more of the windings 2 be predetermined or stored in a setpoint memory and these are compared with the calculated actual temperature Tw of the respective windings to be monitored 2, wherein a shutdown device 40 is activated as soon as a calculated actual temperature Tw exceeds a desired value.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Microelectronics & Electronic Packaging (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017100881.0A DE102017100881A1 (en) | 2017-01-18 | 2017-01-18 | Winding temperature monitoring |
PCT/EP2018/050879 WO2018134154A1 (en) | 2017-01-18 | 2018-01-15 | Winding temperature monitoring |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3571749A1 true EP3571749A1 (en) | 2019-11-27 |
Family
ID=60111652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18701135.8A Pending EP3571749A1 (en) | 2017-01-18 | 2018-01-15 | Winding temperature monitoring |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3571749A1 (en) |
CN (1) | CN206585435U (en) |
DE (2) | DE102017100881A1 (en) |
WO (1) | WO2018134154A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5986245B2 (en) * | 2015-03-03 | 2016-09-06 | ファナック株式会社 | Fixing tool for fixing temperature detecting element, electric motor, and fixing method of temperature detecting element |
FR3084219B1 (en) * | 2018-07-18 | 2020-06-19 | Renault S.A.S | METHOD AND SYSTEM FOR CORRECTING THE MEASURED TEMPERATURE OF WINDING OF AN ELECTRIC MACHINE, PARTICULARLY FOR A VEHICLE WITH ELECTRIC OR HYBRID PROPULSION |
WO2020056630A1 (en) * | 2018-09-19 | 2020-03-26 | 深圳市大疆创新科技有限公司 | Three-phase motor and temperature detection method and device, and gimble and movable platform |
DE102018126711A1 (en) * | 2018-10-25 | 2020-04-30 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Protection circuit for protecting an electric motor |
DE102019112516A1 (en) * | 2019-05-14 | 2020-11-19 | Schaeffler Technologies AG & Co. KG | Temperature measuring device for a stator of an electrical machine with hairpin or rod wave windings |
DE102020100175A1 (en) * | 2020-01-07 | 2021-07-08 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Heater fan motor |
CN111711325B (en) * | 2020-06-28 | 2023-04-25 | 哈动国家水力发电设备工程技术研究中心有限公司 | Tidal current energy permanent magnet generator with tooth top temperature measuring structure |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19925699C1 (en) | 1999-06-04 | 2000-11-02 | Interelectric Ag Sachseln | Electric motor or generator has bifilar temperature sensor used for monitoring temperature or temperature variation of rotor or stator winding packet |
DE19939997C2 (en) | 1999-08-24 | 2003-08-14 | Bosch Gmbh Robert | Device for monitoring an electric motor for thermal overload |
JP4535189B2 (en) * | 2008-12-09 | 2010-09-01 | トヨタ自動車株式会社 | Rotating electric machine for vehicles |
DE102010063581A1 (en) | 2010-10-21 | 2012-04-26 | Robert Bosch Gmbh | Stator of an electric machine |
EP2533405B1 (en) * | 2011-06-10 | 2013-12-25 | ebm-papst Mulfingen GmbH & Co. KG | Stator for an EC motor and EC motor with such a stator |
CN202395608U (en) * | 2011-12-13 | 2012-08-22 | 江苏常牵庞巴迪牵引系统有限公司 | Installation structure of motor temperature sensor |
DE102015006345A1 (en) * | 2014-05-20 | 2015-11-26 | Schaeffler Technologies AG & Co. KG | Electric machine with temperature sensor |
-
2017
- 2017-01-18 DE DE102017100881.0A patent/DE102017100881A1/en active Pending
- 2017-01-18 DE DE202017103424.0U patent/DE202017103424U1/en active Active
- 2017-03-10 CN CN201720231648.9U patent/CN206585435U/en active Active
-
2018
- 2018-01-15 EP EP18701135.8A patent/EP3571749A1/en active Pending
- 2018-01-15 WO PCT/EP2018/050879 patent/WO2018134154A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
CN206585435U (en) | 2017-10-24 |
DE102017100881A1 (en) | 2018-07-19 |
WO2018134154A1 (en) | 2018-07-26 |
DE202017103424U1 (en) | 2017-07-03 |
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Legal Events
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