Method and Device for the Electrodynamic Braking of a Universal Motor
First Claim
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1. A method for electrodynamic braking of a universal motor, comprising:
- continuously ascertaining a rotational speed of the universal motor;
temporarily, periodically short-circuiting an armature of the universal motor with a semiconductor switch to brake the universal motor; and
setting firing angles of the semiconductor switch according to an indexed mapping of firing angles to target rotational speeds of the universal motor,wherein each of the set firing angles is adapted to an ascertained rotational speed value.
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Abstract
A method and device for the electrodynamic braking of a universal motor. The method comprises continuously ascertaining a rotational speed of the universal motor, temporarily, periodically short-circuiting an armature of the universal motor with a semiconductor switch to brake the universal motor, and setting firing angles of the semiconductor switch according to an indexed mapping of firing angles to target rotational speeds of the universal motor. Each of the set firing angles is adapted to an ascertained rotational speed value.
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9 Claims
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1. A method for electrodynamic braking of a universal motor, comprising:
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continuously ascertaining a rotational speed of the universal motor; temporarily, periodically short-circuiting an armature of the universal motor with a semiconductor switch to brake the universal motor; and setting firing angles of the semiconductor switch according to an indexed mapping of firing angles to target rotational speeds of the universal motor, wherein each of the set firing angles is adapted to an ascertained rotational speed value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device for electrodynamic braking of a universal motor, comprising:
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a rotational speed sensor configured to continuously ascertain a rotational speed of the universal motor; a semiconductor switch configured to temporarily, periodically short-circuit an armature of the universal motor to brake the universal motor; and a control device configured to set firing angles of the semiconductor switch according to an indexed mapping of firing angles to target rotational speeds of the universal motor, wherein each firing angles set is adapted to the rotational speed value ascertained.
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9. (canceled)
Specification