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Patent Searching and Data


Title:
APPARATUS FOR DETERMINING THE ANGULAR POSITION OF THE ROTOR OF AN ELECTRIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2012/097782
Kind Code:
A3
Abstract:
The invention relates to an apparatus for determining the position of the rotor (5) of an electric machine in relation to the stator (9), said machine comprising multiple phases (1, 2, 3), each of which includes at least one pole winding (4) with a magnetizable core (10). The disclosed apparatus comprises devices (11-19) for detecting measurement signals that are characterized by the momentary degrees of magnetization of the pole winding cores (10), said degrees of magnetization being influenced by the angular position of the magnetic field of the rotor (5). According to the invention, said devices are also used to detect the currents in the phases and determine the angular position of the rotor from the detected measurement signals, taking into account a contribution of the phase currents to the degrees of magnetization of the pole winding cores.

Inventors:
STROTHMANN ROLF (DE)
Application Number:
PCT/DE2011/075283
Publication Date:
June 06, 2013
Filing Date:
November 23, 2011
Export Citation:
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Assignee:
STROTHMANN ROLF (DE)
International Classes:
H02P21/14; H02P6/18; H02P23/14
Domestic Patent References:
WO1992001331A11992-01-23
Foreign References:
DE10220122A12002-12-19
DE102006046637A12007-06-21
Attorney, Agent or Firm:
BERNHARDT, Reinhold et al. (Saarbr├╝cken, DE)
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