This invention discloses a separated across-the-line generation technology suitable for large scale rotation variance aiming at solving the problem of narrow effective zone of the present generator output voltage and low voltage usability by separating the coil elements of a stator winding or sub-elements of the coil element into even parts in the same structures, each leading out independent connector groups, and between two adjacent parts, switch arrays of realizing their serial or parallel connection and same current direction of the same kind ends are designed. A generator output voltage corresponds a very large rotation effective zone in certain fluctuation sphere to increase the voltage usability.