Brake device
AssigneeRobert Bosch GmbH
InventorsJuergen Wiker, Klaus Dengler, Matthias Schneider
Life of this patent
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Abstract
The disclosure relates to a brake device for an electric motor, which has at least one armature winding and at least one field winding, comprising at least one open-loop and/or closed-loop control unit at least for open-loop control and/or closed-loop control of at least one electric current through the armature winding and/or through the field winding. According to the disclosure, in the event of short-circuit braking of the electric motor, the open-loop and/or control-loop unit is intended to reduce, at least temporarily, an electric armature current flowing through the armature winding.
Claims8
A brake device for an electric motor, the electric motor having at least one armature winding and at least one field winding, the brake device comprising:
- at least one controller configured to control at least one electrical current flowing through at least one of (i) the at least one armature winding and (ii) at least one the field winding, the controller being configured to at least temporarily adjust an electrical current strength of an electrical armature current flowing through the at least one armature winding to be less than an electrical current strength of an electrical field current flowing through the at least one field winding during short-circuit braking of the electric motor.
A method for operating a brake device for an electric motor having at least one armature winding and at least one field winding, the method comprising:
- at least temporarily adjusting, with at least one controller of the brake device, an electrical current strength of an electrical armature current flowing through the at least one armature winding to be less than an electrical current strength of an electrical field current flowing through the at least one field winding during short-circuit braking of the electric motor.
A machine tool comprising:
- at least one electric motor having at least one armature winding and at least one field winding;
- and
- at least one brake device having at least one controller configured to control at least one electrical current flowing through at least one of (i) the at least one armature winding and (ii) at least one the field winding, the controller being configured to at least temporarily adjust an electrical current strength of an electrical armature current flowing through the at least one armature winding to be less than an electrical current strength of an electrical field current flowing through the at least one field winding during short-circuit braking of the electric motor.
Dependencies are inferred from the claim text.