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Patent Searching and Data


Title:
METHOD AND DETECTION SYSTEM FOR THE STATE OF THE ROTOR OF AN ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2012/136211
Kind Code:
A3
Abstract:
A method for determining the state of an electric motor (2) is suggested, wherein in a first step (14) a preliminary state of said electric motor (2) is determined, characterised in that it is determined (25), whether a refined determination (31, 38, 41) of the state of said electric motor (2) has to be made.

Inventors:
DWIVEDI, Sanjeet, Kumar (Nørager 6B, 2th, Sønderborg, DK-6400, DK)
Application Number:
DK2012/000033
Publication Date:
August 15, 2013
Filing Date:
April 03, 2012
Export Citation:
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Assignee:
DANFOSS DRIVES A/S (Ulsnæs 1, Graasten, DK-6300, DK)
DWIVEDI, Sanjeet, Kumar (Nørager 6B, 2th, Sønderborg, DK-6400, DK)
International Classes:
H02P6/18; H02P6/20
Foreign References:
EP0994561A22000-04-19
EP1195611A12002-04-10
US20090184678A12009-07-23
Other References:
RIEDER U-H ET AL: "Sensorless control of an external rotor PMSM in the wholespeed range including standstill using DC-link measurements only", POWER ELECTRONICS SPECIALISTS CONFERENCE, 2004. PESC 04. 2004 IEEE 35TH ANNUAL, AACHEN, GERMANY 20-25 JUNE 2004, PISCATAWAY, NJ, USA,IEEE, US, 20 June 2004 (2004-06-20), pages 1280 - 1285, XP010739678, ISBN: 978-0-7803-8399-9, DOI: 10.1109/PESC.2004.1355606
Attorney, Agent or Firm:
DANFOSS A/S (Intellectual Property, Nordborgvej 81 L25, Nordborg, DK-6430, DK)
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