US20170002804A1 - Compressor system for a rail vehicle and method for operating the compressor system with safe emergency operation - Google Patents

Compressor system for a rail vehicle and method for operating the compressor system with safe emergency operation Download PDF

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Publication number
US20170002804A1
US20170002804A1 US15/101,735 US201415101735A US2017002804A1 US 20170002804 A1 US20170002804 A1 US 20170002804A1 US 201415101735 A US201415101735 A US 201415101735A US 2017002804 A1 US2017002804 A1 US 2017002804A1
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US
United States
Prior art keywords
pressure
rotational speed
compressor
electric machine
compressed
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.)
Abandoned
Application number
US15/101,735
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English (en)
Inventor
Thomas Kipp
Gert Assmann
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.)
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Schienenfahrzeuge 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 Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Assigned to KNORR-BREMSE SYSTEME FUR SCHIENENFAHRZEUGE GMBH reassignment KNORR-BREMSE SYSTEME FUR SCHIENENFAHRZEUGE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ASSMANN, GERT, KIPP, THOMAS
Publication of US20170002804A1 publication Critical patent/US20170002804A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D27/00—Heating, cooling, ventilating, or air-conditioning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/021—Measuring and recording of train speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/025—Absolute localisation, e.g. providing geodetic coordinates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L2205/00—Communication or navigation systems for railway traffic
    • B61L2205/04—Satellite based navigation systems, e.g. global positioning system [GPS]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0209—Rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/05—Pressure after the pump outlet

Definitions

  • the disclosed embodiments relate to a compressor system for a rail vehicle, comprising a compressor which is driven by an electric machine via a drive shaft and which serves for generating compressed air for at least one compressed-air vessel, wherein the electric machine can be controlled at least indirectly using a regulation device for operation of the electric machine at at least a rated rotational speed between a maximum rotational speed and a minimum rotational speed, wherein furthermore, in a compressed air-conducting line arranged downstream of the compressor, there is arranged at least one pressure sensor for determining the pressure for the regulation device.
  • the disclosed embodiments relate to a method for controlling the compressor system according to at least one of the disclosed embodiments.
  • Compressors in rail vehicles are subject to a variety of, in part, conflicting demands, such as for example a high delivery output, adequate activation duration, low sound emissions, low energy consumption, a small structural space, and low purchase and life-cycle costs.
  • the compressor must satisfy extremely different demand profiles depending on the operating state of the rail vehicle.
  • the typical problem in designing a compressor is that of finding the best comprise between these demands which is acceptable in all operating states of the rail vehicle.
  • electrically driven compressors are used in rail vehicles.
  • the operation of the compressors takes the form of on/off operation with a constant rotational speed, the so-called rated rotational speed, between the lower activation pressure and the upper deactivation pressure.
  • the compressor is dimensioned such that a predefined filling time is attained and a minimum activation duration during operation is not undershot.
  • FIG. 1 shows a block circuit diagram of the compressor system according to the disclosed embodiment
  • FIG. 2 shows a block circuit diagram of the compressor system according to at least one disclosed embodiment
  • FIG. 3 shows two related diagrams, wherein a rotational speed of the compressor is plotted versus time in the upper diagram, and a pressure of the compressor is plotted versus time in the lower diagram.
  • an actuator for the continuous manipulation of the rotational speed of the electric machine is arranged between an electrical supply and the electric machine, wherein the actuator can be controlled by way of the regulation device, and wherein, in the compressed air-conducting line arranged downstream of the compressor, there is arranged a pressure switch for monitoring of the pressure in the at least one compressed-air vessel and for manipulation of at least the rotational speed of the electric machine.
  • the actuator is situated upstream of the electric machine in the power flow, and is thus positioned ahead of the electric machine.
  • the actuator permits operation of the electric machine at different rotational speeds.
  • Frequency converters or inverters are particularly suitable for this purpose.
  • the rotational speed of the electric machine and thus the operation of the compressor are adapted.
  • the additional electronic components for regulating the rotational speed in particular the additional sensors, cables and the actuator, give rise to an increase in the probability of faults and risk of failure of the compressor system.
  • the pressure switch for monitoring the pressure in the at least one compressed-air vessel, the reliability of a compressor system of the type is increased, and the possibility of reliable emergency running operation is realized.
  • the pressure switch can indirectly manipulate at least the rotational speed of the electric machine.
  • the compressor can be activated, and in particular the rotational speed of the compressor can be increased, to increase the pressure in the at least one compressed-air vessel up to a certain upper pressure.
  • the pressure switch manipulates at least the rotational speed of the compressor only when the pressure reaches either the minimum pressure or the upper deactivation pressure.
  • the rotational speed is increased, wherein, when the upper deactivation pressure is reached, it is at least the case that the rotational speed is reduced, or the compressor is deactivated.
  • regular operation of the compressor is resumed such that the compressor is operated at rated rotational speed.
  • the pressure switch is operatively connected to the regulation device for the purposes of indirect manipulation of the rotational speed of the electric machine.
  • the pressure switch transmits the generated signals to the regulation device, wherein the latter, may be by way of an integrated control algorithm, adapts the rotational speed of the electric machine to the received signal.
  • an isolating switch for separating the regulation device and the actuator from the electric machine is connected downstream of the actuator.
  • the isolating switch is in particular arranged between the electrical supply and the electric machine, and thus constitutes a bridge both between the actuator and the electric machine and between the electrical supply and the electric machine.
  • the pressure switch may be connected to the isolating switch via an interposed control logic unit.
  • the isolating switch is consequently independent of the regulation device and can be operated by way of the control logic unit, which receives signals from the pressure switch.
  • the regulation device at least indirectly controls a cooler unit which is arranged downstream of the compressor and which has a cooler fan, wherein a rotational speed of the cooler fan can be continuously adjusted by the regulation device.
  • an actuator may be integrated in the cooler unit. It is alternatively also conceivable for the actuator to be at least positioned upstream of the cooler unit. It is likewise conceivable for an actuator to have two control outputs, such that both the electric machine and the cooler fan are controlled by way of a common actuator.
  • the compressor is operated with a variable rotational speed which assumes any intermediate value between the maximum rotational speed and the minimum rotational speed, wherein the pressure switch monitors the pressure in the at least one compressed-air vessel and indirectly manipulates at least the rotational speed of the electric machine.
  • the cooling unit is not connected either directly or indirectly to the compressor, separate control of the cooling unit and thus separate adjustment of the rotational speed of the cooler fan are performed. It is advantageously also possible for the compressor and the cooler fan to be deactivated.
  • the regulation device when the minimum pressure in the at least one compressed-air vessel is reached, the regulation device receives from the pressure switch a signal for triggering the actuator to operate the compressor at at least the rated rotational speed until the deactivation pressure is reached. In this way, it is possible in particular to counteract faulty sensors and/or cables. Specifically, the regulation device controls the actuator in accordance with the output of the pressure switch.
  • the control logic unit when the minimum pressure in the at least one compressed-air vessel is reached, receives from the pressure switch a signal for triggering the isolating switch and separating the regulation device and the actuator from the electric machine, wherein the compressor is operated, via the isolating switch, with the rated rotational speed until the deactivation pressure is reached.
  • the isolating switch connects the electric machine directly to the electrical supply. Therefore, the regulation device cannot have any influence on the electric machine and thus on the rotational speed of the compressor. In this way, it is possible in particular for a failure or a fault of the regulation device as a whole, together with all associated sensors and the actuator, to be counteracted.
  • the electric machine is operated with intermittent alternation between at least the rated rotational speed when the pressure falls to the minimum pressure and deactivation of the compressor when the deactivation pressure is reached.
  • the rotational speed of the electric machine and thus the rotational speed of the compressor are varied no further, to maintain a relatively constant pressure in the at least one compressed-air vessel.
  • the compressor it is however also conceivable for the compressor to be operated not with the rated rotational speed but with a maximum rotational speed to permit faster filling of the at least one compressed-air vessel.
  • a compressor system for a rail vehicle has an electric machine 1 which, via a drive shaft 2 , drives a compressor 3 for generating compressed air.
  • the compressed air generated by the compressor 3 is conducted via a compressed air-conducting line 6 to a cooler unit 9 which has a cooler fan 14 .
  • a pressure sensor 7 and a temperature sensor 13 b are arranged downstream of the cooler unit 9 in the compressed air-conducting line 6 .
  • the compressed air-conducting line 6 issues into a pre-separator 11 , downstream of which there is connected an air treatment system 12 .
  • the dried compressed air which has been purified of particles, is then fed into a compressed-air vessel 4 .
  • a pressure switch 16 for the monitoring of the pressure in the compressed-air vessel 4 and for the indirect manipulation of the rotational speed of the electric machine 1 and of the cooler fan 14 .
  • a temperature sensor 13 a which is arranged at the compressor 3 , and the temperature sensor 13 b and the pressure sensor 7 all transmit the measured temperatures and the measured pressure to the regulation device 5 . Furthermore, via a signal input 10 , the regulation device 5 also receives signals from other sensors—not illustrated here—or from a train management system. Furthermore, the regulation device 5 is suitable for both controlling the rotational speed of the cooler unit 9 and transmitting signals to an actuator 8 .
  • the actuator 8 which is in the form of a frequency converter, sets the rotational speed of the electric machine 1 and thus the rotational speed of the compressor 3 . Furthermore, the actuator 8 has two outlets and thus also sets the rotational speed of the cooler fan 14 by way of the regulation device 5 .
  • the actuator 8 is, for the continuous manipulation of the rotational speed of the electric machine 1 , arranged between an electrical supply 15 and the electric machine 1 .
  • the regulation device 5 receives from the pressure switch 16 a signal for triggering the actuator 8 to operate the compressor 3 at the rated rotational speed n until a deactivation pressure d is reached.
  • an isolating switch 17 for separating the regulation device 5 and the actuator 8 from the electric machine 1 is connected downstream of the actuator 8 .
  • the pressure switch 16 is connected to the isolating switch 17 via an interposed control logic unit 18 .
  • the control logic unit 18 receives from the pressure switch 16 a signal for triggering the isolating switch 17 and separating the regulation device 5 and the actuator 8 from the electric machine 1 .
  • the compressor 3 is then operated, via the isolating switch 17 , at the rated rotational speed n until a deactivation pressure d is reached.
  • FIG. 3 graphically illustrates the above-described process in the event of a pressure drop in the compressed-air vessel 4 being measured by way of the pressure switch 16 .
  • the compressor 3 is operated at a rotational speed between a minimum rotational speed i and the rated rotational speed n, wherein the pressure in the compressed-air vessel 4 is kept in a certain range.
  • the compressor 3 is in regulated operation.
  • the rotational speed is variable and dependent on the situation.
  • the pressure switch 16 reacts and, in a region c, increases the rotational speed of the electric machine 1 and thus the rotational speed of the compressor 3 to the rated rotational speed n indirectly, either via the isolating switch 17 or via the actuator 8 . Consequently, in the region c, the reaction of the pressure switch 16 occurs for the switchover of operation from regulated operation to non-regulated operation.
  • the cooler fan 14 (not illustrated here) is also operated analogously to the operation of the compressor 3 .
  • the compressor 3 After a deactivation pressure d has been reached in the compressed-air vessel 4 , the compressor 3 is deactivated and is operated once again at a rotational speed between the minimum rotational speed i and the rated rotational speed n, such that the pressure in the compressed-air vessel 4 is kept in a certain range.
  • the compressor 3 it is also possible for the compressor 3 to provide a feed to a multiplicity of compressed-air vessels 4 . It may also be provided that, when the minimum pressure e in the compressed-air vessel 4 is reached, the rotational speed of the electric machine 1 and thus the rotational speed of the compressor 3 are increased to a maximum rotational speed m rather than just the rated rotational speed n.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
US15/101,735 2013-12-05 2014-12-02 Compressor system for a rail vehicle and method for operating the compressor system with safe emergency operation Abandoned US20170002804A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102013113557.9A DE102013113557A1 (de) 2013-12-05 2013-12-05 Kompressorsystem für ein Schienenfahrzeugs und Verfahren zum Betrieb des Kompressorsystems mit einem sicheren Notlaufbetrieb
DE102013113557.9 2013-12-05
PCT/EP2014/076166 WO2015082432A1 (de) 2013-12-05 2014-12-02 Kompressorsystem für ein schienenfahrzeugs und verfahren zum betrieb des kompressorsystems mit einem sicheren notlaufbetrieb

Publications (1)

Publication Number Publication Date
US20170002804A1 true US20170002804A1 (en) 2017-01-05

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US15/101,735 Abandoned US20170002804A1 (en) 2013-12-05 2014-12-02 Compressor system for a rail vehicle and method for operating the compressor system with safe emergency operation

Country Status (10)

Country Link
US (1) US20170002804A1 (zh)
EP (1) EP3077673A1 (zh)
JP (1) JP6275257B2 (zh)
KR (1) KR20160093649A (zh)
CN (1) CN105940221B (zh)
AU (1) AU2014359381B2 (zh)
CA (1) CA2932783A1 (zh)
DE (1) DE102013113557A1 (zh)
RU (1) RU2646988C2 (zh)
WO (1) WO2015082432A1 (zh)

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US20220135092A1 (en) * 2019-02-25 2022-05-05 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Air supply system and method for controlling and/or monitoring an air supply system
CN114729629A (zh) * 2019-11-26 2022-07-08 克诺尔轨道车辆系统有限公司 用于轨道车辆的压缩机系统以及用于控制压缩机系统的冷却装置的方法

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DE102015111287B4 (de) * 2015-07-13 2018-04-26 Gardner Denver Deutschland Gmbh Kompressor und Verfahren zu dessen Drehzahlsteuerung
DE102016100705A1 (de) * 2016-01-18 2017-07-20 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Luftversorgungsanlage
CN109236659B (zh) * 2018-10-15 2020-02-07 南京中车浦镇海泰制动设备有限公司 一种轨道交通风源系统用无油涡旋压缩机控制方法
DE102020100296A1 (de) 2020-01-09 2021-07-15 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Kompressorsystem und Verfahren zum Betreiben eines Kompressorsystems in Abhängigkeit des Druckluftbedarfs eines Betriebszustands des Fahrzeugs
DE102020115300A1 (de) 2020-06-09 2021-12-09 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Kompressorsystem und Verfahren zur Steuerung einer Kühleinrichtung eines Kompressorsystems
DE102021118806B3 (de) 2021-07-21 2022-10-13 Pierburg Pump Technology Gmbh Verfahren zur Steuerung einer elektrisch angetriebenen Fluidpumpe für ein Fahrzeug und eine elektrisch angetriebene Fluidpumpe für ein Fahrzeug

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220135092A1 (en) * 2019-02-25 2022-05-05 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Air supply system and method for controlling and/or monitoring an air supply system
CN114729629A (zh) * 2019-11-26 2022-07-08 克诺尔轨道车辆系统有限公司 用于轨道车辆的压缩机系统以及用于控制压缩机系统的冷却装置的方法

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Publication number Publication date
DE102013113557A1 (de) 2015-06-11
EP3077673A1 (de) 2016-10-12
RU2646988C2 (ru) 2018-03-13
CN105940221B (zh) 2018-02-06
JP6275257B2 (ja) 2018-02-07
AU2014359381B2 (en) 2017-09-14
WO2015082432A1 (de) 2015-06-11
JP2016539277A (ja) 2016-12-15
KR20160093649A (ko) 2016-08-08
AU2014359381A1 (en) 2016-06-23
CN105940221A (zh) 2016-09-14
CA2932783A1 (en) 2015-06-11

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