A kinetic power generation unit improves the magnetic field of an electric motor and the magnetic field of a power generator into a same magnetic field coupling of a same rotor, so that the rotors of electric motor and the power generator have the same rotational direction, and an exciting winding of the electric motor changes and transmits phases sequentially to a phase voltage by a brushless drive controller, so that an interference effect on the counter electromotive force of the electric motor and the counter-electromotive force of the power generator is changed to a positive effect.