Abstract
For the shunt active power filter (SAPF), the stability of DC-side voltage plays a very important role in its performance. Considering the large overshoot, static error and poor robustness of traditional P-I control method, an improved reaching law sliding mode control strategy is proposed and applied to three-phase three-wire shunt active power filter for its DC-side voltage control. The simulation experiment shows that the proposed method effectively improves the robustness of DC-side voltage control and evidently suppresses overshoot and has high practical value in three-phase three-wire SAPF.
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