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WO2014072341A2 - Système de refroidissement pour transducteur électromécanique - Google Patents

Système de refroidissement pour transducteur électromécanique Download PDF

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Publication number
WO2014072341A2
WO2014072341A2 PCT/EP2013/073167 EP2013073167W WO2014072341A2 WO 2014072341 A2 WO2014072341 A2 WO 2014072341A2 EP 2013073167 W EP2013073167 W EP 2013073167W WO 2014072341 A2 WO2014072341 A2 WO 2014072341A2
Authority
WO
WIPO (PCT)
Prior art keywords
electromechanical transducer
cooling fluid
electromechanical
cooling
hollow
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/EP2013/073167
Other languages
German (de)
English (en)
Other versions
WO2014072341A3 (fr
Inventor
Vladimir Danov
Bernd Gromoll
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2014072341A2 publication Critical patent/WO2014072341A2/fr
Publication of WO2014072341A3 publication Critical patent/WO2014072341A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/20—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil wherein the cooling medium vaporises within the machine casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/10—Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/44—Drive Train control parameters related to combustion engines
    • B60L2240/445—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
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • Cooling for electromechanical converters The invention relates to cooling for electromechanical converters.
  • Electromechanical transducers have been known for some time.
  • an electric motor is such an electromechanical converter that converts electrical energy into mechanical energy.
  • a force that is exerted by a magnetic field on current-carrying conductor of a coil put into motion.
  • Such electric motors are used to drive various work machines and vehicles - above all rail vehicles, trolleybuses, electric vehicles, hybrid vehicles.
  • Electromechanical transducers required.
  • previous concepts for cooling electromechanical converters still offer much room for improvement.
  • previous concepts for cooling include example, an indirect cooling, in which the housing of the electromechanical transducer is air-cooled.
  • a disadvantage of this method is that parts of the electromechanical transducer, which are located, for example, in the middle of the electromechanical transducer, are insufficiently cooled.
  • an electromechanical transducer having at least one inlet and one outlet for at least one hollow conduit for receiving a cooling fluid, wherein the hollow conduit in or on a rotor and / or a stator and / or a shaft and / or a Housing of the electromechanical transducer can be arranged, and wherein the hollow conduit is arranged as an evaporator for receiving heat energy from the electromechanical transducer by means of the cooling fluid.
  • electromechanical transducers, which are provided with hollow conductors can be cooled directly with a cooling fluid. This can be implemented particularly effectively and efficiently, for example, in electromechanical converters whose conductors of the winding are designed as small tubes.
  • Such cooling is particularly advantageous for drives or electromechanical converters which are installed in a motor vehicle or an aircraft, since it is there in In most cases, there is already a water cooling system.
  • the invention provides that a hollow conductor or a hollow housing and a hollow shaft of an electromechanical transducer is used as an evaporator of a heat pump. This makes it possible in a simple manner to increase the efficiency of an electric drive or an electromechanical transducer. In addition, such electromechanical transducers can be made more compact.
  • the electromechanical transducer is arranged to direct, via the outlet of the conduit, the cooling fluid for compression to a compressor, which in turn supplies the cooling fluid for heat release to a condenser, from which it is subsequently routable to expand, and from the throttle again via the inlet, which acts as an evaporator hollow line of the electromechanical transducer, for receiving heat energy can be fed.
  • the electromechanical transducer takes advantage of the characteristics of a compression refrigeration machine. In this case, the effect of the heat of evaporation is used in a change of state of aggregation of liquid to gas.
  • the cooling fluid which is moved in a closed circuit, experiences successively different states of aggregate state.
  • the gaseous cooling fluid is first compressed by a compressor in this case. From the compressor, the cooling fluid is supplied to a condenser with heat release. Subsequently, the liquid cooling fluid is forwarded to a throttle for expansion, while reducing its pressure. The now expanded cooling fluid is supplied again via the inlet of the acting as an evaporator hollow line of the electromechanical transducer for receiving heat energy.
  • the cycle described above can now start over. The process must be kept on the outside by supplying mechanical work via the compressor.
  • the cooling fluid takes a heat output - here on acting as an evaporator hollow duct of the electromechanical transducer - at a low temperature level and then outputs the heat output with the input of mechanical work - from the compressor - at a higher temperature level to the environment.
  • the efficiency of acting as a compression refrigeration cooling of the electromechanical transducer increases with decreasing temperatures of the environment. This is particularly true in aircraft coolers, as they are exposed to a very low ambient temperature.
  • the electromechanical converter is set up such that the cooling fluid can be taken out via the outlet of the line by means of a jet pump in which a negative pressure can be generated by means of an accelerated propellant of the jet pump and thereby the expanding cooling fluid is sucked via the outlet, and wherein the sucked cooling fluid can be supplied with the driving medium from the jet pump to a condenser for cooling, from which it is then fed again via the inlet of the hollow line to the evaporator.
  • the propellant of the jet pump is an ionic liquid.
  • ionic liquids have only a very low vapor pressure, it is possible to achieve with a jet pump a strong negative pressure for sucking the cooling fluid from the hollow conduit of the electromechanical transducer. This effect is used to vaporize the cooling fluid. In this case, heat is removed from the environment during the evaporation of the cooling fluid. In this way, the cooling of the electromechanical transducer is achieved.
  • the cooling fluid is a volatile substance. This can be cooled particularly effectively and efficiently.
  • a condenser which is designed as a separate radiator of a vehicle or is already integrated in a radiator of a vehicle, can advantageously be used for cooling the electromechanical converter - electric drive - of the vehicle itself. As a result, space and weight can be saved in the vehicle.
  • the capacitor of the electromechanical transducer - electric drive - is designed as a separate radiator of an aircraft or integrated in an existing radiator of an aircraft. This can be saved in the space of the aircraft and at the same weight can be reduced.
  • FIG. 1 shows an electromechanical transducer with an integrated hollow conduit for cooling, according to an embodiment of the invention
  • 2 shows a schematic diagram of a jet pump for cooling an electromechanical transducer according to an embodiment of the invention and its implementation.
  • the electromechanical transducer 1 is formed in the embodiment shown in FIG 1 as an electric drive. Simplified while the essential components of the electromechanical transducer 1 are shown. It is a located on a shaft 8 rotor 6 which is rotatably mounted within a stator 7, wherein the individual components are accommodated in a housing 9. During operation of the electromechanical transducer 1, power losses occur which lead to heating of the individual components and thereby reduce the efficiency of the electromechanical converter 1. To counteract this, the stator 7 is provided in this embodiment with hollow lines 4, which are suitable for receiving and guiding a cooling fluid 5. In FIG. 1, for the sake of simplification, only a hollow line 4 is shown in order to illustrate the mode of operation of a cooling of the electromechanical converter 1.
  • the electromechanical transducer 1 in order to enable a very high and uniform cooling of the electromechanical transducer 1, the electromechanical transducer 1 according to a further embodiment of the invention in several or all components of the electromechanical transducer 1 hollow lines 4 for receiving the cooling fluid 5 have.
  • the hollow conduit 4 has an inlet 2 and an outlet 3, through which a cooling fluid 5 is supplied to or removed from a hollow conduit 4.
  • the hollow line 4 assumes the function of an evaporator 10 for receiving heat energy from the electromechanical transducer 1 by means of the cooling fluid 5 therein.
  • the hollow line 4 acting as the evaporator 10 is connected to a circuit. whose other components complement each other to form a compression refrigeration machine.
  • the direction of a cycle is illustrated by the arrows in FIG. 1, in which the cooling fluid 5 successively undergoes different changes of state of aggregation.
  • the cooling fluid 5 is expanded via a throttle 13, wherein the cooling fluid 5 is again converted into a gaseous state.
  • the cooled Fluid 5 again supplied via an inlet 2 of the evaporator 10 acting as hollow line 4.
  • the cooling fluid 5 can now absorb heat energy of the electromechanical transducer 1 again. This starts the cycle described above from the beginning.
  • FIG. 2 shows a further embodiment of the invention, wherein in the case illustrated therein, the cooling of the cooling fluid 5 by means of a jet pump 14 takes place.
  • the jet pump 14 is a pump in which the pumping action is generated by a further fluid jet here a propellant, which sucks the coolant fluid 5 by pulse exchange another medium here, accelerated and compressed / promotes.
  • the jet pump 14 is very simple and therefore very robust, low maintenance and versatile.
  • an ionic liquid is used as the driving medium 15. Ionic liquids have an extremely low vapor pressure and thus allow the jet pump 14 to achieve particularly low pressures - suction pressures.
  • the driving medium 15 is driven at very high speed by the jet pump 14, wherein in the jet pump
  • Negative pressure is created, which sucks in the acting as evaporator 10 hollow line 4 heated cooling fluid 5 from the hollow line 4 of the electromechanical transducer 1 and fed together with the driving medium 15 a capacitor 12.
  • the cooling fluid 5 - is a volatile substance - it is sucked from the evaporator 10.
  • the necessary for evaporation heat energy is a cooling fluid in the Evaporator 10, withdrawn with the cooling fluid or the electromechanical transducer 1 cools.
  • the vapor is liquefied and the resulting mixture of cooling fluid 5 and propellant medium 15 is subsequently expanded via a throttle 13. Subsequently, the mixture is supplied to the evaporator 10 again via the inlet 2. The separation of the cooling fluid 5 from the propellant medium 15 then takes place again in the evaporator 10 by evaporation. The cycle then begins again from the beginning.
  • This type of cooling requires no compressor but only a comparatively simple pump or jet pump 14.
  • the embodiment shown in FIG 2 allows higher cost savings during operation.
  • the capacitors 12 shown in FIG. 1 and FIG. 2 are realized as part of a vehicle or aircraft.
  • a capacitor 12 may be attached to the fuselage of an aircraft and thereby cooled by the ambient air - not shown here.
  • the condenser 12 will be a vehicle radiator. In this way it is possible to cool the electromechanical transducer 1 well below an ambient temperature. The energy required for this is less significant than the savings resulting from the increase in efficiency of the electromechanical transducer 1. A possible increase in mass due to the compressor 12 can be compensated by a smaller and more compact design of the electromechanical transducer 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

Transducteur électromécanique (1), en particulier pour systèmes d'entraînement d'avions et de véhicules, qui comporte au moins un orifice d'entrée (2) et un orifice de sortie (3) pour au moins une conduite creuse (4) destinée à recevoir un fluide de refroidissement (5), ladite conduite creuse (4) pouvant être disposée dans un rotor (6) et/ou dans un stator (7) et/ou dans un arbre (8) et/ou dans un carter (9) du transducteur électromécanique (1), ou sur ces derniers, et ladite conduite creuse (4) étant conçue en tant qu'évaporateur (10) pour absorber l'énergie thermique du transducteur électromécanique (1) au moyen du fluide de refroidissement (5). Le refroidissement permet d'augmenter le rendement du transducteur électromécanique (1) et d'obtenir une structure plus compacte.
PCT/EP2013/073167 2012-11-12 2013-11-06 Système de refroidissement pour transducteur électromécanique Ceased WO2014072341A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012220557.8A DE102012220557A1 (de) 2012-11-12 2012-11-12 Kühlung für elektromechanische Wandler
DE102012220557.8 2012-11-12

Publications (2)

Publication Number Publication Date
WO2014072341A2 true WO2014072341A2 (fr) 2014-05-15
WO2014072341A3 WO2014072341A3 (fr) 2015-01-22

Family

ID=49622786

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/073167 Ceased WO2014072341A2 (fr) 2012-11-12 2013-11-06 Système de refroidissement pour transducteur électromécanique

Country Status (2)

Country Link
DE (1) DE102012220557A1 (fr)
WO (1) WO2014072341A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117895703A (zh) * 2024-03-15 2024-04-16 常州天安尼康达电器有限公司 一种具有智能化可调节式散热功能的交流电机

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016222850B4 (de) * 2016-11-21 2023-01-19 AUDI HUNGARIA Zrt. Elektrische Maschine und Kraftfahrzeug
DE102017006402A1 (de) 2017-07-06 2018-02-15 Daimler Ag Elektrische Maschine, insbesondere für ein Kraftfahrzeug

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GB724456A (en) * 1952-04-18 1955-02-23 Westinghouse Electric Int Co Improvements in or relating to dynamo-electric machines
US3422635A (en) * 1967-03-21 1969-01-21 Bbc Brown Boveri & Cie Lubricating and cooling system for electric motors
US3866438A (en) * 1973-10-29 1975-02-18 Carrier Corp Motor cooling apparatus utilizing a refrigerant flow circuit
DE3031421A1 (de) * 1980-08-18 1982-02-25 Siemens AG, 1000 Berlin und 8000 München Elektrische maschine mit einem ueber geschlossene kuehlkanaele verlaufenden innenkuehlkreis
DE8110016U1 (de) * 1981-04-03 1981-09-17 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt "spruehoelgekuehlter generator"
US5240069A (en) * 1992-07-06 1993-08-31 The United States Of America As Represented By The Secretary Of The Air Force Integral cooling system for a jet engine integral starter/generator and the like
DE10244428A1 (de) * 2002-09-24 2004-06-17 Siemens Ag Elektrische Maschine mit einer Kühleinrichtung

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Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117895703A (zh) * 2024-03-15 2024-04-16 常州天安尼康达电器有限公司 一种具有智能化可调节式散热功能的交流电机
CN117895703B (zh) * 2024-03-15 2024-05-14 常州天安尼康达电器有限公司 一种具有智能化可调节式散热功能的交流电机

Also Published As

Publication number Publication date
DE102012220557A1 (de) 2014-05-15
WO2014072341A3 (fr) 2015-01-22

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