EP 2550732 A2 20130130 - AVOIDANCE OF TORSIONAL EXCITATIONS IN CONVERTER-CONTROLLED COMPRESSOR RUNS
Title (en)
AVOIDANCE OF TORSIONAL EXCITATIONS IN CONVERTER-CONTROLLED COMPRESSOR RUNS
Title (de)
VERMEIDUNG VON TORSIONSANREGUNGEN IN UMRICHTERGEFÜHRTEN VERDICHTERSTRÄNGEN
Title (fr)
ÉVITEMENT DE LA PRODUCTION DE TORSION DANS DES TRAINS DE COMPRESSEURS COMMANDÉS PAR CONVERTISSEURS
Publication
Application
Priority
- DE 102010012268 A 20100322
- EP 2011054225 W 20110321
Abstract (en)
[origin: WO2011117183A2] The invention relates to a machine (M) having a converter-controlled drive (VFD), having a processing machine (WM), wherein the machine (M) has at least one rotor (R), having a frequency converter (VFG), which converts an input frequency to an output frequency, wherein the converter is designed such that, on a Campbell diagram with respect to the machine (WM) intersections of the natural torsional frequency, which can be excited by the drive (VFD), of the rotor (R) with V-shaped symmetrical straight lines of the inter-harmonic exciter frequency result for output frequencies F1, F2, F3,..., Fi. In order to improve the running quality of machines such as these, the invention proposes that F1,..., Fi be grouped into concentration ranges G1,..., Gi,..., Gz, related to the machine rotation speed, while nearby Fi are combined in Gi with respect to one another, such that, together with one another, they each have a common starting point on abscissa, wherein the upper and lower limits of the concentration range G1,..., Gi,...Gz, are defined by the intersection point of the lowest natural torsional frequency of the rotor with the two straight lines of the ray pair of the interharmonics of the first order of the respective concentration range G1,..., Gi,...Gz, wherein each concentration range G1,..., Gi,...Gz defines a blocking range (FA), wherein the machine has an operating rotation speed range (OR) which is outside the blocking ranges (FA).
IPC 8 full level
H02P 23/04 (2006.01)
CPC (source: EP US)
F01D 5/02 (2013.01 - US); H02P 5/74 (2013.01 - US); H02P 6/10 (2013.01 - US); H02P 23/04 (2013.01 - EP US); H02P 27/04 (2013.01 - US)
Citation (search report)
See references of WO 2011117183A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2011117183 A2 20110929; WO 2011117183 A3 20120907; AU 2011231733 A1 20121101; AU 2011231733 B2 20141211; BR 112012024038 A2 20160830; BR 112012024038 B1 20201215; BR 112012024038 B8 20230425; CA 2793963 A1 20110929; CA 2793963 C 20180116; CN 102906992 A 20130130; CN 102906992 B 20160203; EP 2550732 A2 20130130; JP 2013533718 A 20130822; JP 5718446 B2 20150513; RU 2012144619 A 20140427; RU 2567871 C2 20151110; US 2013129473 A1 20130523; US 2014203744 A1 20140724; US 8680793 B2 20140325; US 9148084 B2 20150929; WO 2011117248 A2 20110929; WO 2011117248 A3 20120823
DOCDB simple family (application)
EP 2011054225 W 20110321; AU 2011231733 A 20110322; BR 112012024038 A 20110322; CA 2793963 A 20110322; CN 201180025275 A 20110322; EP 11711805 A 20110321; EP 2011054366 W 20110322; JP 2013500471 A 20110322; RU 2012144619 A 20110322; US 201113636179 A 20110322; US 201414220844 A 20140320