The invention discloses a closed-
loop control method for power generation power of a range
extender of an electric automobile. The method comprises the six steps of mechanical power prediction, mechanical power modification, mechanical power decoupling, migration
trajectory control, mechanical power realization and power generation power feedback. According to the method, feedforward prediction and feedback closed-
loop control are carried out on a range
extender system at the same time, the advantages of high feedforward control response are kept, the characteristics of control output stability and high control precision of feedback are further inherited, so that the errors between the target power generation power and the actual power generation power of the range
extender are reduced, and the high-efficient and stable operation of the range extender is ensured. According to the method, an optimal operation trajectory line and a
trajectory control line are arranged, so that in steady-state and transient-state power generation
power regulation processes of the range extender, the rotating speed and the torque of the range extender can be adjusted and transferred along the optimal operation trajectory line as far as possible, the efficiency and the emission of the range extender reach an ideal state while the range extender responds to request power with different levels, and the
controllability and the running performance of the range extender are effectively ensured.