Power supply converter and photovoltaic air-conditioning system adopting the same

The application provides a power supply converter and a photovoltaic air-conditioning system adopting the same. The power supply converter comprises a DC bus, a unidirectional DC-DC converter of which an output end is connected with the DC bus, a bidirectional AC-DC converter of which a DC end is connected with the DC bus, and a first DC output end connected with the DC bus, wherein an AC end of the bidirectional AC-DC converter is connected with an AC bus, the power supply converter also comprises an isolation transformer connected with the AC bus, an input end of the isolation transformer is used as a commercial power receiving end, an input end of the unidirectional DC-DC converter is used as a DC receiving end; the commercial power receiving end is used for connecting commercial power, the DC receiving end is used for connecting a photovoltaic system, the first DC output end is used for connecting first load equipment, and the first load equipment can be an air conditioner, so that the photovoltaic system, the commercial power and the air conditioner in a family can be organically combined together, and the purpose of energy saving and emission reduction can be achieved.