Global Patent Index - EP 3704789 A1

EP 3704789 A1 20200909 - FREQUENCY CONVERTERS WITH AT LEAST ONE BOOSTER CAPACITOR

Title (en)

FREQUENCY CONVERTERS WITH AT LEAST ONE BOOSTER CAPACITOR

Title (de)

FREQUENZUMRICHTER MIT MINDESTENS EINEM BOOSTER-KONDENSATOR

Title (fr)

CONVERTISSEURS DE FRÉQUENCE AVEC AU MOINS UN CONDENSATEUR SURVOLTEUR

Publication

EP 3704789 A1 (EN)

Application

EP 18830508 A

Priority

  • HR P20171686 A
  • HR 2018000018 W

Abstract (en)

[origin: WO2019086915A1] Owing to the use of "booster" capacitor at the output of the frequency converter, additional currents flow through the electric motor, so it is possible to load an electric motor depending on the performance of the frequency converter, as shown in Figures 1 to 5, with a maximum power of 95%, respectively according to configurations shown in pictures of 8 to 10 with a maximum power of 90%. Therefore, with aim to solve the above said problem, the present patent reveals new type of frequency converters having the "booster" capacitor which is at voltage that is higher than that of the grid voltage.The present invention proposes two types of frequency converters: a) Converters with input DC link b) Converters which don't have an input DC link, but are powered from the grid via the motor winding (without rectifying diodes).

IPC 8 full level

H02M 3/137 (2006.01)

CPC (source: EP)

H02M 3/137 (2013.01); B60L 2220/54 (2013.01); Y02T 10/64 (2013.01)

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)

WO 2019086915 A1 20190509; EP 3704789 A1 20200909; HR P20171686 A2 20190517; HR PK20171686 B3 20200207

DOCDB simple family (application)

HR 2018000018 W 20181024; EP 18830508 A 20181024; HR P20171686 A 20171103