No, not the same thing.My research indicates that sepex and shunt mean the same thing is this true?
In a shunt-wound brushed DC motor, the field windings are connected in parallel across the armature winding, via the brushes and the commutator. The field is "shunted" across the armature.
In a separately-excited ( sepex ) motor these two parts are completely separate electrically. Power for the field windings is connected and controlled independently from the armature.