Patent ID: 11876459
Assignee: DELTA ELECTRONICS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A power conversion system applied to a solid state transformer, comprising:
a DC link comprising a positive bus and a negative bus,
a plurality of capacitors coupled in series between the positive bus and the negative bus, and
a plurality of power conversion module assemblies, each of the power conversion module assemblies comprising a plurality of DC conversion modules;
wherein each of the plurality of power conversion module assemblies is correspondingly connected to each of the plurality of capacitors;
in any of the power conversion module assemblies, input sides of the DC conversion modules are connected in series to form two input ends of the power conversion module assembly, and output sides of the DC conversion modules are connected in parallel to form two output ends of the power conversion module assembly,
wherein the DC link further comprises a midpoint bus with a floating potential, and the plurality of capacitors comprise a first capacitor coupled between the positive bus and the midpoint bus, and a second capacitor coupled between the midpoint bus and the negative bus.