EP2550732A2 - Évitement de la production de torsion dans des trains de compresseurs commandés par convertisseurs - Google Patents

Évitement de la production de torsion dans des trains de compresseurs commandés par convertisseurs

Info

Publication number
EP2550732A2
EP2550732A2 EP11711805A EP11711805A EP2550732A2 EP 2550732 A2 EP2550732 A2 EP 2550732A2 EP 11711805 A EP11711805 A EP 11711805A EP 11711805 A EP11711805 A EP 11711805A EP 2550732 A2 EP2550732 A2 EP 2550732A2
Authority
EP
European Patent Office
Prior art keywords
machine
frequency
drive
vfd
rotor
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
EP11711805A
Other languages
German (de)
English (en)
Inventor
Volker Hütten
Norbert Wagner
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
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP2550732A2 publication Critical patent/EP2550732A2/fr
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • 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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/04—Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for damping motor oscillations, e.g. for reducing hunting
    • 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
    • H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
    • H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors
    • 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
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/10—Arrangements for controlling torque ripple, e.g. providing reduced torque ripple

Definitions

  • the invention relates to a machine having a converter ⁇ guided drive with variable rotational frequency
  • the machine comprising at least one rotor
  • inverter is designed such that in a Campbeil diagram relative to the machine (WM)
  • Such machines have at least one rotor and may also comprise a plurality of rotors, which may also be part of an intermediate gear. If there are multiple rotors, the invention is applicable to each individual. For a single rotor is the
  • Power range of at least 1MW recording power which is fundamentally different in terms of dimensions and material selection and the use of significantly smaller units.
  • frequency components which are not integer multiples of the frequency of the feed signal are determined by the Fourier analysis (fast Fourier transformation), these components are called
  • Vibration curve for example, a torsional vibration of a rotor shaft is transformed by means of Fourier transform from the time domain in the frequency domain, so they are in the Campbell diagram as rising and falling lines over the X-axis, which reflects the speed of the rotor. Orders (Ol, 02, 7) of the Fourier transform are then reflected in these lines appearing as center rays, whose
  • the natural frequencies are reproduced as a tolerance band whose respective width results from the inaccuracy of the model formation and possibly other variances. In the following refers to the
  • Torsional natural frequency - unless otherwise stated - always to the tolerance band described.
  • harmonic excitation frequencies are shown, which are a straight line parallel to the abscissa, if they are independent of the speed. If the Excitation frequency is variable with the speed, it represents an increasing or decreasing straight line through the origin. Is the engine speed in a range in which the excitation frequency curves the tolerance band of
  • ... Fn are grouped into concentration ranges Gl, Gi, ... Gz, where Fi, which are close to each other in Gi, are combined, which together form a common starting point.
  • Gi, ... Gz are defined by the intersection of the lowest torsional natural frequency of the rotor with the two straight lines of the pair of beams of the first-order interharmonic of the respective concentration range Gl, Gi, ... Gz.
  • Torsional natural frequency leads to a resonance state with high torsional vibration amplitudes and thus to high dynamic torsional stresses in the torque transmitting strand components. The result may be resulting consequences such as fatigue damage the
  • the spectrum of the frequency analysis shows that the output from the inverter in addition to the desired frequency still other frequencies that are to suggestions of
  • Torsionsschwingungen can lead.
  • Such unwanted secondary frequencies which can hardly be avoided so far, are also called harmonic or interharmonic
  • the invention has the object to improve the smoothness of machines with inverter-driven drives and thereby the possible consequences of high vibrations, such.
  • An operating speed range indicates the range of the rotational speed of a rotor on which the design of the machine is based, in which the rotational speed is at least 90% of the assumed operating time.
  • Inverter a motor feed frequency or a
  • the preferred field of application of the invention are machines which are designed as a turbo set, in particular machines which have at least one turbo-compressor.
  • the usual choice of the drive today causes the
  • devoted resonance-free operating speed ranges are used. For example, it is expedient if the transmission translates the speed of the converter-guided drive to a higher speed on the work machine.
  • a pole pair number of> 2 of the converter-driven drive in combination with a gearbox for the work machine translating to a higher speed can implement the inventions particularly advantageously if at least one concentration range lies in the range of the input frequency in the converter, which is relatively frequently the case. In this way, the engine gives way to the interharmonic
  • Exciter frequency of the inverter in the direction of a lower speed and the transmission translates this lower speed to the desired speed of the machine or in a corresponding operating speed range.
  • FIG. 1 shows a simplified representation of a
  • FIG. 2 shows a cam follower diagram, which is characteristic of the converter illustrated as an example in FIG.
  • FIG. 3 shows a section from the Campbeil diagram of FIG. 2 and the implementation possibilities with respect to the operating speed range of the machine.
  • FIG. 1 shows a machine M according to the invention schematically.
  • Essential components of the inventive machine M are the (frequency) converter VFG, a converter-driven drive VFD with a variable speed ni and a
  • the embodiment further comprises a transmission gear TR, which translates the speed generated by the drive VFD on a first shaft SH1 to a second speed n2 on a second shaft SH2, which drives the compressor CO.
  • the compressor CO promotes a
  • Torsion natural frequencies FT1, FT2, FTi so that high during operation near these frequencies
  • Vibration amplitudes can occur. Furthermore, by the torsional bending vibration coupling, in particular in intermediate gears, by torsional vibrations also
  • the inverter is a power source inverter (LCI).
  • the inverter may also be a
  • FIG. 2 shows a schematic representation of this
  • Campbeil diagram that represents these so-called interharmonic excitation frequencies of the inverter output. These excitation frequencies are generated in the inverter and in the motor via the air gap between the stator and rotor on the
  • the Campbeil diagram is used in all areas of vibration technology, for example for the representation of
  • Vibrations of rotors and blades The diagram is suitable for the vibration tuning, e.g. all in one
  • Natural frequencies can also be represented as a frequency band whose width is determined by the variance of the
  • excitation frequencies also include spectral components that are considered interharmonic
  • FIG. 2 shows, by way of example, three straight lines which indicate interharmonic excitation frequencies as a function of the input rotational speed, which each have a starting point on the abscissa.
  • the region FA defined by the outer elements of the grouping does not belong to the desired resonance-free operating rotational speed range of the exemplary region OR of the machine M.
  • the illustrated operating rotational speed range OR is, for example, present between that which is spanned
  • the operating speed range OR is exemplary here
  • the output frequency FO of the converter in combination with the pole pair number PPZ of the drive VFD can be selected such that within the desired
  • Barrier area FA with a pole pair number of PPZ 3 to one third as 1000 RPM.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Ac Motors In General (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Multiple Motors (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

L'invention concerne une machine (M) comportant un moteur commandé par un convertisseur (VFD), avec une machine de travail (WM), la machine (WM) comprenant au moins un rotor (R), avec un convertisseur de fréquence (VFG) qui convertit une fréquence d'entrée en une fréquence de sortie, le convertisseur étant conçu de telle sorte que des points d'intersection de la fréquence propre de torsion du rotor (R) pouvant être produite par le moteur (VFD) avec des droites symétriques en forme de V de la fréquence d'excitation inter-harmonique pour les fréquences de sortie F1, F2, F3,…, Fi se révèlent dans un diagramme de Campbell par rapport à la machine (WM). Pour améliorer la régularité de marche d'une telle machine, selon l'invention, F1,…, Fi sont groupées dans des zones de concentration G1,…, Gi,…, Gz associées à la vitesse de rotation de la machine, les Fi proches les unes des autres qui ont chacune un point de sortie commun les unes avec les autres sur les abscisses étant ainsi rassemblées en Gi, les limites supérieure et inférieure de la zone de concentration G1,…, Gi,…, Gz étant définies par le point d'intersection de la plus basse fréquence propre de torsion du rotor et des deux droites de la paire de rayons des inter-harmoniques du premier ordre des zones de concentration G1,…, Gi,…, Gz respectives, chaque zone de concentration G1,…, Gi,…, Gz définissant une zone interdite (FA), la machine comportant une zone de vitesse de rotation en fonctionnement (OR) qui est située à l'extérieur de la zone interdite (FA).
EP11711805A 2010-03-22 2011-03-21 Évitement de la production de torsion dans des trains de compresseurs commandés par convertisseurs Ceased EP2550732A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010012268 2010-03-22
PCT/EP2011/054225 WO2011117183A2 (fr) 2010-03-22 2011-03-21 Évitement de la production de torsion dans des trains de compresseurs commandés par convertisseurs

Publications (1)

Publication Number Publication Date
EP2550732A2 true EP2550732A2 (fr) 2013-01-30

Family

ID=44625623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11711805A Ceased EP2550732A2 (fr) 2010-03-22 2011-03-21 Évitement de la production de torsion dans des trains de compresseurs commandés par convertisseurs

Country Status (9)

Country Link
US (2) US8680793B2 (fr)
EP (1) EP2550732A2 (fr)
JP (1) JP5718446B2 (fr)
CN (1) CN102906992B (fr)
AU (1) AU2011231733B2 (fr)
BR (1) BR112012024038B8 (fr)
CA (1) CA2793963C (fr)
RU (1) RU2567871C2 (fr)
WO (2) WO2011117183A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012203426B4 (de) * 2012-03-05 2013-10-10 Siemens Aktiengesellschaft Vermeidung von Dauerbetrieb in frequenzumrichtererregten Torsionsresonanzen eines Verdichterstrangs
CN104737438B (zh) * 2012-08-31 2018-01-02 国际壳牌研究有限公司 可变速度驱动系统、用于操作可变速度驱动系统的方法和用于冷冻碳氢化合物流的方法
DE102012219854B3 (de) * 2012-10-30 2013-11-07 Siemens Aktiengesellschaft Vermeidung von Drehschwingungen bei Turbomaschinen
CA2890585C (fr) * 2012-11-07 2020-08-25 Abb Technology Ag Systeme comportant un premier moteur electrique et un deuxieme moteur electrique pour entrainer un ensemble d'elements rotatifs
CN105406793B (zh) * 2015-12-24 2018-04-03 上海电气富士电机电气技术有限公司 一种抑制轴扭振的装置及方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4538100A (en) * 1980-03-10 1985-08-27 Creative Technology, Inc. DC to AC inverter and motor control system
US4793186A (en) * 1987-10-21 1988-12-27 Westinghouse Electric Corp. Monitoring of exciter shaft torsional vibrations
US5152172A (en) * 1989-03-23 1992-10-06 Electric Power Research Institute Operating turbine resonant blade monitor
DE59401808D1 (de) * 1994-06-30 1997-03-27 Siemens Ag Stillstandserkennung beim Wiederanlassen eines stromrichtergespeisten Drehstrommotors ohne Drehzahlgeber
JP2001074547A (ja) * 1999-07-05 2001-03-23 Nippon Densan Corp 特性表示方法、特性表示システムおよび特性表示プログラムを記憶した記録媒体
FR2824597B1 (fr) * 2001-05-11 2004-04-02 Snecma Moteurs Reduction de vibrations dans une structure comprenant un rotor et des sources de perturbation fixes
JP2006144575A (ja) * 2004-11-16 2006-06-08 Mitsubishi Heavy Ind Ltd 軸流形回転流体機械
CN2844992Y (zh) * 2005-11-01 2006-12-06 天津大学 基于旋转磁场的转子轴系扭振主动控制驱动装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2011117183A2 *

Also Published As

Publication number Publication date
US8680793B2 (en) 2014-03-25
AU2011231733B2 (en) 2014-12-11
WO2011117248A3 (fr) 2012-08-23
BR112012024038B8 (pt) 2023-04-25
WO2011117183A3 (fr) 2012-09-07
RU2012144619A (ru) 2014-04-27
CN102906992A (zh) 2013-01-30
BR112012024038B1 (pt) 2020-12-15
JP5718446B2 (ja) 2015-05-13
CN102906992B (zh) 2016-02-03
WO2011117248A2 (fr) 2011-09-29
US20130129473A1 (en) 2013-05-23
BR112012024038A2 (pt) 2016-08-30
US20140203744A1 (en) 2014-07-24
CA2793963A1 (fr) 2011-09-29
CA2793963C (fr) 2018-01-16
WO2011117183A2 (fr) 2011-09-29
AU2011231733A1 (en) 2012-11-01
RU2567871C2 (ru) 2015-11-10
JP2013533718A (ja) 2013-08-22
US9148084B2 (en) 2015-09-29

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