If one set stops and reverse power protection is not provided, the set still running will drive the set that has stopped. The generator on the set that has stopped will act as a motor.

This equipment adopts a thyristor excitation DC generator-motor set with a field weakening regulation device working in step with loading.

To summary the coal of vice-well continuous current generator-motor the set drag and hoists of the control system reform to into practice the methods, and proceeds to that system synopsis analysis.