Series hybrid energy-saving control method of the tractor

The present invention relates to a control method for a series hybrid energy-tractor, a traction motor to the engine, to a diesel engine / generator system as the primary energy source to the battery pack or the battery / supercapacitor group economy as auxiliary energy systems, diesel / generator under operation, the primary energy source system sends an electrical power value, driving the traction motors efficient operation, when the power value is greater than the traction motor demand for electric power from the auxiliary power system stores surplus electric power; when the auxiliary energy system SOC value above the set value, the main energy system stops working, the auxiliary energy supply system can be individually; the present invention in a diesel engine / generator power demand rather than a tractor power supply in the economy, diesel engine / generator always runs on diesel fuel consumption minimum effective near the operating point, high energy efficiency, low fuel consumption, to achieve energy saving.