Inverter power supply and power supply system applying same

The utility model discloses an inverter power supply and a power supply system applying the same. The inverter power supply comprises a charger, an energy storage unit, a synchronous detection module, an inverter and a system controller, wherein the charger is connected with the energy storage unit to charge an energy storage power supply for energy storage; the synchronous detection module detects the frequency and the phase of a main power supply, generates a detection signal and outputs the detection signal to the system controller; and the system controller generates a pulse signal for driving connection and disconnection of a switching tube in the inverter according to the received detection signal, and outputs the pulse signal to the inverter to control the inverter to invert a direct-current power supply output by the energy storage unit into an alternating-current power supply which has the same frequency and phase as those of the main power supply for output. The inverter power supply solves the prob