YR wound rotor motor working principle and selection: how to use the rotor circuit resistance to realize heavy load soft start?

YR wound rotor asynchronous motor (usually including YR, YRKK, YRKS and other series) is a special kind of AC asynchronous motor, whose stator is the same as that of ordinary squirrel-cage motors, but the rotor adopts the wire-wound structure and leads to the three-phase windings through the slip rings and brushes.The core value of YR motors lies in their excellent start-up performance: through...