The utility model relates to a kind of phase-locked loop of power supply
system, and power supply
system includes multiple
ac power supply;Phase-locked loop includes
rectifier module, DC-
AC module and output terminal, the number of input of
rectifier module is equal to the number of
ac power supply, the input of
rectifier module is electrically connected to the output terminal of
ac power supply one by one, the input of DC-
AC module is electrically connected to the output terminal of rectifier module, the input of output terminal is electrically connected to the output terminal of DC-
AC module.This application is switched by multiple ac power supply and supplies power, DC-AC module carries out phase-locked state, ensure that there is no
phase difference phase angle problem when load equipment is automatically switched.