Abstract:When the satellite moving in the orbit, the voltage of the satellite power supplied in the illumination/shadow area is different. The EMF is relatively high when the flywheel running in high speed. In order to meet the needs of the flywheels, the efficiency application of the switching mode power topology which can raise the output voltage in the flywheel control systems are realized. Some commonly-used non-insulate and insulate switching mode power supply topology structure are introduced, which provide a practical application of the project for the future flywheel control systems.