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Title:
ELECTRODYNAMIC BRAKING DEVICE FOR A UNIVERSAL MOTOR
Document Type and Number:
WIPO Patent Application WO/2010/099787
Kind Code:
A3
Abstract:
An electrodynamic braking device for a universal motor is proposed, wherein during a braking operation a field winding is supplied from a network, and an armature is directly short-circuited, and a braking operation is carried out using a program of a controller of a control electronics system, whereby good braking is achieved with relatively low brush wear. Such an electrodynamic braking device is advantageously applied in a power tool equipped with a dangerous tool.

Inventors:
ROTTMERHUSEN, Hans, Hermann (Grashofweg 34, Tellingstedt, 25782, DE)
Application Number:
DE2010/000228
Publication Date:
April 19, 2012
Filing Date:
March 01, 2010
Export Citation:
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Assignee:
ROBERT BOSCH GMBH (Postfach 30 02 20, Stuttgart, 70442, DE)
ROTTMERHUSEN, Hans, Hermann (Grashofweg 34, Tellingstedt, 25782, DE)
International Classes:
H02P3/10; H02M5/22; H02P3/08; H02P25/10
Domestic Patent References:
WO1991003869A11991-03-21
WO2005031963A12005-04-07
Foreign References:
DE3428032A11986-01-30
DE10317636A12004-11-25
DE19912121A12000-09-28
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