Patent ID: 11870366
Assignee: THE TRUSTEES OF PRINCETON UNIVERSITY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 21:
22. A power conversion circuit comprising:
a common DC bus;
a plurality of DC-AC conversion units coupled to the common DC bus, the plurality of DC-AC conversion units connected to each other in series;
at least one other DC-AC conversion unit coupled to the common DC bus;
a multi-winding transformer comprising a magnetic core and a plurality of windings, each of the plurality of DC-AC conversion units being coupled to a corresponding winding on a first side of the multi-winding transformer and the at least one other DC-AC conversion unit being coupled to a corresponding winding on a second side of the multi-winding transformer, the second side being opposite the first side; and
a controller configured to:
measure a voltage of one or more intermediate nodes, each intermediate node being operably coupled to two adjacent DC-AC conversion units of the plurality of DC-AC conversion units, the two adjacent DC-AC conversion units both being on either the first side or the second side of the multi-winding transformer; and
adjust a gate signal of switches of the plurality of DC-AC conversion units to regulate the voltage of the one or more intermediate nodes.