using equalising lines, e.g. rotor and stator lines of first and second motors

Full Title

Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors (H02P6/04, H02P8/40 take precedence) > for speed regulation of two or more dynamo-electric motors in relation to one another > by comparing electrical values representing the speeds > using equalising lines, e.g. rotor and stator lines of first and second motors