Loading patent…
AssigneeDelta Electronics, Inc.
InventorsHsin Chih Chen, Li Hung Wang, Yun Tsung Liu, Chao Li Kao
Estimating the term…
A circular current suppression method, a switch control device, and a power conversion system are disclosed, which convert a difference between a voltage converted from a common-mode current of several input currents of a power factor corrector and a bus-voltage difference into a reference current, convert a difference between a reference voltage and a total voltage into a total DC current, and add cosine even-numbered-harmonic components of the reference current based on the total DC current, a target current, and one of several input currents to calculate a compensation current that is converted into a voltage as one of at least one switching command output to the power factor corrector, thereby suppressing the circular current in a configuration of parallel power conversion modules.
A circular current suppression method, applied to a plurality of power conversion modules connected in parallel, each power conversion module comprising a power factor corrector, a positive bus capacitor, and a negative bus capacitor, the power factor corrector adjusting at least one of a positive bus voltage and a negative bus voltage based on at least one switching command, wherein the method comprises:
A switch control device, comprising:
Dependencies are inferred from the claim text.