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Patent Searching and Data


Title:
ELECTRICAL MACHINE
Document Type and Number:
WIPO Patent Application WO/2013/023819
Kind Code:
A3
Abstract:
The invention relates to a brush-commutated electrical machine (1), comprising: a rotor (6) having a number of rotor teeth (8); rotor coils (10), which each enclose one or a plurality of the rotor teeth (8); a stator arrangement having stator poles, which have at least one permanent magnet stator pole (4) formed with a permanent magnet (3) and at least one subsequent pole (5) which is not provided with a permanent magnet and are arranged in a subsequent pole arrangement; a commutator having at least one brush pair in order to make contact with a rotor coil group of rotor coils which are connected to each other, wherein in each case the entire inductance of the connected rotor coils (10) is equal to one of the rotor coil group at a first and at a second position of the rotor (6) in relation to the stator arrangement.

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Inventors:
ROOS, Gerald (Buehlackerstr. 20a, Achern, 77855, DE)
Application Number:
EP2012/061811
Publication Date:
November 06, 2014
Filing Date:
June 20, 2012
Export Citation:
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Assignee:
ROBERT BOSCH GMBH (Postfach 30 02 20, Stuttgart, 70442, DE)
ROOS, Gerald (Buehlackerstr. 20a, Achern, 77855, DE)
International Classes:
H02K23/30; H02K23/04; H02K23/38
Domestic Patent References:
WO2010137642A12010-12-02
Foreign References:
DE102009033623A12010-01-21
US20100013361A12010-01-21
US20090315426A12009-12-24
US20020113514A12002-08-22
Attorney, Agent or Firm:
ROBERT BOSCH GMBH (Postfach 30 02 20, Stuttgart, 70442, DE)
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