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摘要
A double closed loop control strategy composed of inner voltage-loop and external current-loop with a current-reference feedforward link was proposed based on the output characteristic of an air plasma cutting converter(APCC) with non-contact arc ignition. An equivalent mathematical model of the APCC was presented and a controller was designed via frequency domain analysis. Experiments verified that the proposed control strategy showed excellent dynamic and static performance, which significantly improved the arc ignition and the robustness against load disturbance.
- 出版日期2012
- 单位华中科技大学
