Solid-state transformer, power supply device, and data center

A power supply device, comprising a cabinet and a solid-state transformer,

• and the solid-state transformer comprises:
• M power conversion units, wherein each power conversion unit of the M power conversion units comprises a first power conversion circuit, a high-frequency transformer, and a second power conversion circuit, and the first power conversion circuit is coupled to the second power conversion circuit by using the high-frequency transformer;
• and
• a housing, having an insulation base and a conductive enclosure,
• wherein the conductive enclosure is sleeved on to at least partially surround an outer surface of the insulation base,
• wherein
• the insulation base has an accommodating cavity, and M first power conversion circuits of the M power conversion units are disposed in the accommodating cavity at intervals,
• wherein an inner wall of the conductive enclosure is configured to hermetically fit an outer surface of the insulation base via a sealing structure disposed between the inner wall and the outer surface,
• wherein
• M is an integer greater than 1;
• and wherein the solid-state transformer is disposed in the cabinet, and the conductive enclosure is grounded by using the cabinet.

A data center, comprising a load device and further comprising a power supply device,

• wherein the power supply device, comprising a cabinet and a solid-state transformer, and the solid-state transformer comprises:
• M power conversion units, wherein each power conversion unit of the M power conversion units comprises a first power conversion circuit, a high-frequency transformer, and a second power conversion circuit, and the first power conversion circuit is coupled to the second power conversion circuit by using the high-frequency transformer;
• and
• a housing, having an insulation base and a conductive enclosure, wherein the conductive enclosure is sleeved on to at least partially surround an outer surface of the insulation base,
• wherein
• the insulation base has an accommodating cavity, and M first power conversion circuits of the M power conversion units are disposed in the accommodating cavity at intervals,
• wherein an inner wall of the conductive enclosure is configured to hermetically fit an outer surface of the insulation base via a sealing structure disposed between the inner wall and the outer surface,
• wherein
• M is an integer greater than 1;
• and wherein the solid-state transformer is disposed in the cabinet, and the conductive enclosure is grounded by using the cabinet,
• and wherein
• a first power conversion circuit is configured to connect to a power supply grid, and a second power conversion circuit is configured to connect to the load device.