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This paper presents an integrated ac choke that incorporates the common-mode (CM) suppression function into a three-phase differential-mode (DM) inductor. The proposed choke, together with other filter components, provides a transformerless solution to issues caused by the switching CM voltage in neutral-connected power converter systems. The required high CM-to-DM inductance ratio is generated by...
This paper presents a novel three-phase choke that integrates the common-mode (CM) suppression and differential-mode (DM) filtering functions. The proposed choke provides a transformerless solution to issues caused by the switching common-mode voltage (CMV) in power converter systems. The magnetic core involves three bridge legs and a peripheral part on which one set (three-phase) of coils are wound...
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