Power module and solid-state transformer system

A power module, comprising:

• a circuit module, having a voltage level;
• and
• a cabin, configured to wrap the circuit module by bending or splicing, wherein the cabin has a shielding structure, the shielding structure comprising:
• a first conductor layer, the first conductor layer being located at a side close to the circuit module and equipotentially connected to the circuit module;
• a second conductor layer, the second conductor layer being arranged apart from the first conductor layer and located at a side away from the circuit module;
• and
• a solid insulating layer, provided between the first conductor layer and the second conductor layer and configured to electrically isolate the first conductor layer and the second conductor layer,
• wherein the shielding structure further comprises a plurality of third conductor layers arranged at intervals, and at least one layer of the plurality of third conductor layers is arranged outside the shielding structure and is configured as a signal transmission layer.