Range-enhanced electromobile generating system

The invention discloses a range-enhanced electromobile generating system which comprises an engine, an alternating current permanent magnet synchronous motor, a diode rectifier, a non-isolated DC/DC (Direct Current/Direct Current) convertor and a power generation control unit; after being started, the engine drags the alternating current permanent magnet synchronous motor; after being dragged, the alternating current permanent magnet synchronous motor outputs three-phase alternating current to the diode rectifier; the control unit is connected with the non-isolated DC/DC converter and is used for outputting a control-driven signal to control and regulate the output voltage and the output current of the non-isolated DC/DC converter; the diode rectifier outputs and connects with the non-isolated DC/DC converter and is used for rectifying the three-phase alternating current and outputting the direct current to the non-isolated DC/DC converter; and the non-isolated DC/DC converter is used for carrying out voltage boosting and voltage reducing on the input direct current and then outputting. The range-enhanced electromobile generating system disclosed by the invention has low cost.