Power supply device and data center

The utility model provides a power supply device and a data center, and the device comprises a power input end which is connected with an external power input end; the rectifier is coupled with the power supply input end and is used for converting first alternating current provided by the power supply input end into first direct current; the direct current/direct current converter is coupled with the rectifier and used for converting the first direct current into second direct current; the energy storage unit is coupled with the direct current/direct current converter and is used for storing energy of the second direct current; the inverter is coupled with the rectifier and is used for converting the first direct current into second alternating current; the high-frequency transformer is coupled with the inverter and is used for converting the second alternating current into third alternating current; and the alternating current/alternating current converter is coupled with the high-frequency transformer and u