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In synchronous rotating frame (SRF), the mathematical mode of a three-phase PWM VSI with LC filter is complex, and the dq components have cross coupling terms. In order to obtain good dynamic and static performance, the controller structure should be inherently based on the systempsilas mathematical model, which means that the decoupling control strategy with feed-forward should be adopted. But this...
This paper proposes a transformer-coupled series DC active power filter (DCAPF) applied to high performance magnet power supplies with large current and low ripples. In the condition of heavy magnet loads, this type of DCAPF has much better filtering performance compared with the parallel DCAPF. Firstly, the configuration of the magnet power supplies with the series DCAPF is proposed. Then a novel...
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