Subsection power supply shifting device for movable non-contact power supply system

The invention discloses a subsection power supply shifting device for a movable non-contact power supply system. The system comprises a ground inverter, selector switches, a resonance capacitor, primary winding coils, a position detection device, a secondary winding coil and a vehicle-mounted converter. The subsection power supply shifting device is characterized in that one inverter can supply power to the K primary winding coils through the K selector switches, wherein K is a positive integer, high-frequency power components are adopted in the selector switches, the selector switches are arranged on the outlet of the inverter, and the withstand voltage requirement for the selector switches is low. Before the selector switches are turned on or off, at first, the output current of the inverter should be zero, and therefore connection and disconnection of the zero current of the selector switches are achieved, and soft switching is achieved.