Isolation transformer and power converter

A power converter, wherein the power converter comprises:

• at least one first power conversion circuit,
• at least one second power conversion circuit, and
• at least one isolation transformer, wherein the at least one isolation transformer comprises
• a high-voltage winding, connected to the at least one first power conversion circuit, wherein the high-voltage winding has a solid insulation layer, a conducting layer or a semi-conducting layer is disposed on the solid insulation layer, and the conducting layer or the semi-conducting layer is grounded;
• a low-voltage winding, connected to the at least one second power conversion circuit, and wherein an insulation withstand voltage requirement of the at least one first power conversion circuit on the ground is higher than an insulation withstand voltage requirement of the at least one second power conversion circuit on the ground;
• and
• a solid insulation housing, wherein the solid insulation housing has an opening surface and the opening surface faces the at least one second power conversion circuit, the solid insulation housing covers the low-voltage winding and the high-voltage winding that has the solid insulation layer, a conducting layer or a semi-conducting layer is disposed on the solid insulation housing, and the conducting layer or the semi-conducting layer of the solid insulation housing is grounded;
• wherein the at least one first power conversion circuit connects to the at least one second power conversion circuit through the at least one isolation transformer.