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This paper presents a novel digital control algorithm to enhance the dynamic performance of a dc-dc converter for non-high-frequency arc (NHFA) plasma cutting power supply. Using the principle of capacitor charge balance, the proposed algorithm predicts the optimal transient for a dc-dc converter during a load change. A 16kW experimental prototype of the NHFA plasma cutting power supply is designed...
This paper analyzes the transition characteristic of the doubly-fed induction generator (DFIG) during the grid fault, and the approximate short current calculation which is based on the fifth-order DFIG model is also introduced to support the analysis. A novel method which is easier and more accurate than the past ones is proposed to verify the low voltage ride through (LVRT) characteristic of the...
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