Title:
ROTOR POSITION ENCODER FOR AN ELECTRONICALLY COMUTATED ELECTRIC MACHINE HAVING A REFERENCE ENCODER
Document Type and Number:
WIPO Patent Application WO/2014/131408
Kind Code:
A3
Abstract:
The invention relates to a rotor position encoder (01) for an electronically commutated electric machine (02) having a stator and a rotor (03) and comprising a rotor position sensor (05) which is mounted on the stator so as to rotate therewith and has the purpose of detecting the rotational position of the rotor (03) with respect to the magnetic field of the stator, and a signal encoder (07) which is mounted on the rotor (03) so as to rotate therewith. The rotor position encoder according to the invention is defined in that it has a reference encoder (08) for detecting reference values of the magnetic flux density of the rotor field, wherein the reference values (09) serve to determine an angular offset (11) between the signal encoder (07) and the position of the rotor (03). Furthermore, the invention also relates to a method for determining an angular offset (11) between a signal encoder (07) of a rotor position encoder (01) and a rotor position of an electronically commutated electric machine (02).
Inventors:
KAUFNER BENJAMIN (DE)
Application Number:
PCT/DE2014/200032
Publication Date:
March 26, 2015
Filing Date:
January 29, 2014
Export Citation:
Assignee:
SCHAEFFLER TECHNOLOGIES AG (DE)
International Classes:
H02K29/08; H02K11/00; H02P6/16
Foreign References:
| EP1420510A1 | 2004-05-19 | |||
| DE102012204147A1 | 2012-10-11 | |||
| DE102011105502A1 | 2012-01-12 |
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