MOTOR DRIVE FOR ON-LOAD TAP CHANGER
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United States of America Patent
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Issued Date -
Aug 28, 2014
app pub date -
Oct 18, 2012
filing date -
Nov 11, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a motor drive for an on-load tap changer with an electrical DC motor and a braking device for denned braking of this motor. According to the invention, the braking device has a first diode (D1), which, depending on the direction of rotation, is connected in series with or in opposition to the armature winding (AW) of the DC motor. In accordance with a further feature of the invention, the braking device has a second diode (D2), which is connected permanently in parallel with the shunt winding (NW) of the DC motor.
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