Patent ID: 11962235
Assignee: PETER WALDEMAR LEHN
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A converter circuit for transferring power between a higher-voltage DC network and a lower-voltage DC network; the converter circuit comprising:
two or more voltage source modules (VSMs);
a current source module (CSM) having one or more inductors, two or more switches, the two or more voltage source modules (VSMs), and the CSM connected as a series connected string, wherein the series connected string is coupled to the higher-voltage DC network; wherein at least two AC side terminals of the CSM are connected in series with the two or more VSMs, and two or three DC side terminals of the CSM are coupled to a lower-voltage network; and
a controller that is configured to control one or more states of operation of one or more switches within the CSM or the two or more VSMs of the series connected string to change a direction of a current in the two or more VSMs such that a direction of power flow to the two or more VSMs is reversed during a switching period.