Energy channelling single stage power converter
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United States of America Patent
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Mar 13, 2018
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app pub date -
Sep 3, 2015
filing date -
Sep 5, 2014
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Abstract
Energy channelling AC-DC converters, methods, and control systems are provided. The converters comprise a first output circuit that receives power from the input circuit and provides a first output comprising a DC voltage with a first AC voltage ripple or a DC current with a first AC current ripple; a second output circuit that receives power from the input circuit and provides a second output comprising a second AC voltage ripple or a second AC current ripple, the second output circuit having one or more power switching device; and a controller that controls the power switching devices of the input circuit and the second output circuit so that the first output circuit and the second output circuit alternatively rectify output current only once during one switching cycle of the power switching devices; wherein the first output and the second output are connected together (i) in series, such that the first AC voltage ripple is substantially cancelled, or (ii) in parallel, such that the first AC current ripple is substantially cancelled; wherein substantially ripple-free DC output power is provided.
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