EP 3403326 A1 20181121 - VACUUM PUMP DRIVE HAVING TWO FREQUENCY CONVERTERS
Title (en)
VACUUM PUMP DRIVE HAVING TWO FREQUENCY CONVERTERS
Title (de)
VAKUUMPUMPENANTRIEB MIT ZWEI FREQUENZUMRICHTERN
Title (fr)
ENTRAÎNEMENT DE POMPE À VIDE À DEUX CONVERTISSEURS DE FRÉQUENCE
Publication
Application
Priority
- DE 202016000217 U 20160113
- EP 2016082569 W 20161223
Abstract (en)
[origin: WO2017121611A1] The invention relates to a vacuum pump drive comprising an electric motor (12) driving the rotor of a vacuum pump, a first frequency converter (16) connected to the electric motor (12) and designed to generate a motor input voltage for driving the electric motor (12) from a network supply voltage, at least one second frequency converter (18) that is also designed to generate a motor input voltage of a variable frequency from a network supply voltage, in order to drive the motor according to the frequency of the motor input voltage, characterised in that the second frequency converter (18) is provided with a measuring device (24), which is provided for measuring the motor input voltage generated by the first frequency converter (16) and/or the related motor input current, in order to synchronise the second frequency converter (18) with the first frequency converter (16).
IPC 8 full level
H02P 27/04 (2016.01)
CPC (source: EP KR US)
F04B 49/065 (2013.01 - KR); F04D 25/06 (2013.01 - US); F04D 27/001 (2013.01 - US); H02P 23/26 (2016.02 - US); H02P 27/04 (2013.01 - EP KR US); H02P 27/047 (2013.01 - US)
Citation (search report)
See references of WO 2017121611A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 202016000217 U1 20160202; CN 108684215 A 20181019; EP 3403326 A1 20181121; JP 2019504601 A 20190214; KR 20180104632 A 20180921; SG 11201805834X A 20180830; US 2019028051 A1 20190124; WO 2017121611 A1 20170720
DOCDB simple family (application)
DE 202016000217 U 20160113; CN 201680078963 A 20161223; EP 16819936 A 20161223; EP 2016082569 W 20161223; JP 2018536889 A 20161223; KR 20187021591 A 20161223; SG 11201805834X A 20161223; US 201616069711 A 20161223